Journal of energy storage最新文献

筛选
英文 中文
Realizing excellent energy-storage performance under low electric fields in lead-free BiFeO3-BaTiO3-based ceramics with ultrahigh polarization difference 在具有超高极化差的无铅 BiFeO3-BaTiO3 基陶瓷中实现低电场下的卓越储能性能
IF 8.9 2区 工程技术
Journal of energy storage Pub Date : 2024-11-27 DOI: 10.1016/j.est.2024.114786
Jinbo Zhang , Yongping Pu , Yuxin Hao , YiLe Yang , Lei Zhang , Bo Wang , Qiao Pan
{"title":"Realizing excellent energy-storage performance under low electric fields in lead-free BiFeO3-BaTiO3-based ceramics with ultrahigh polarization difference","authors":"Jinbo Zhang ,&nbsp;Yongping Pu ,&nbsp;Yuxin Hao ,&nbsp;YiLe Yang ,&nbsp;Lei Zhang ,&nbsp;Bo Wang ,&nbsp;Qiao Pan","doi":"10.1016/j.est.2024.114786","DOIUrl":"10.1016/j.est.2024.114786","url":null,"abstract":"<div><div>Amidst the swift progress of electronic devices, there's an escalating need for capacitors to attain heightened energy storage capabilities (&gt; 5 J/cm<sup>3</sup>) under low electric fields(&lt; 300 kV/cm), facilitating integration and downsizing. In this research, (0.67-<em>x</em>)BiFeO<sub>3</sub>–0.33BaTiO<sub>3</sub>-<em>x</em>LaAlO<sub>3</sub> (<em>x</em> = 0–0.07) ceramics with ultrahigh polarization difference (<em>ΔP</em> = <em>P</em><sub>max</sub>-<em>P</em><sub>r</sub>) were successfully synthesized via the traditional solid-phase method. Initially, the progressive substitution of LaAlO<sub>3</sub> was found by XRD Rietveld refinement, PFM, and dielectric spectroscopy analysis to lead to a phase transition from the <em>R3c</em> phase to the <em>Pm3m</em> phase, obtaining ultra-small and highly electric field responsive PNRs, thus facilitating the relaxation behavior and achieving low <em>P</em><sub>r</sub> values. Moreover, the introduction of La<sup>3+</sup> enables the 0.67BiFeO<sub>3</sub>–0.33BaTiO<sub>3</sub> ceramics leading to an increased deviation of Bi ions from the centre, which maintains a relatively high <em>P</em><sub>max</sub> to achieve an ultrahigh Δ<em>P</em> (~52.43 μC/cm<sup>2</sup>), resulting in excellent energy storage density (<em>W</em><sub>rec</sub> ~ 5.71 J/cm<sup>3</sup>) under relatively low electric fields (270 kV/cm), along with super temperature stabilities. This study offers an effective pathway to explore the high energy storage capabilities of dielectric capacitors under low fields.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"105 ","pages":"Article 114786"},"PeriodicalIF":8.9,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723125","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
High performance Mn doped ZnO loaded rGO electrode and its practical application as an electrode for self-charging supercapacitor device 高性能掺锰氧化锌负载 rGO 电极及其作为自充电超级电容器设备电极的实际应用
IF 8.9 2区 工程技术
Journal of energy storage Pub Date : 2024-11-27 DOI: 10.1016/j.est.2024.114783
Aamir Ahmed , Anoop Singh , Sandeep Arya
{"title":"High performance Mn doped ZnO loaded rGO electrode and its practical application as an electrode for self-charging supercapacitor device","authors":"Aamir Ahmed ,&nbsp;Anoop Singh ,&nbsp;Sandeep Arya","doi":"10.1016/j.est.2024.114783","DOIUrl":"10.1016/j.est.2024.114783","url":null,"abstract":"<div><div>In this work, the supercapacitor performance of rGO is enhanced via loading Mn (0.05, 0.075, and 0.1 M) doped ZnO. The morphology, structure, and constituent elements of the material are investigated via material characterization tools. The electrodes are fabricated over a conductive fabric (CF) and their performance is investigated via electrochemical techniques. Mn (0.075 M) doped ZnO loaded rGO displayed the lowest bulk resistance, highest specific capacitance, excellent cyclic stability, and good rate performance. The electrode showed a specific capacitance of 487.3 F g<sup>−1</sup> at 2 A g<sup>−1</sup> with 81.2 % cyclic stability for 10,000 cycles. A self-charging supercapacitor device is also developed in this study using an Mn (0.075 M) doped ZnO loaded rGO electrode. The device displayed output potential under the influence of external force, bending, and twisting at certain angles. The performance of rGO is successfully enhanced and a potential electrode material for self-charging supercapacitor is developed.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"105 ","pages":"Article 114783"},"PeriodicalIF":8.9,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Photo-thermal conversion and energy storage characteristics of magnetic phase change composites 磁性相变复合材料的光热转换和储能特性
IF 8.9 2区 工程技术
Journal of energy storage Pub Date : 2024-11-27 DOI: 10.1016/j.est.2024.114720
Lei Shi, Cunwen Huang, Ruibin Ning, Jiajun Chen, Nianben Zheng, Tian Zhou, Zhiqiang Sun
{"title":"Photo-thermal conversion and energy storage characteristics of magnetic phase change composites","authors":"Lei Shi,&nbsp;Cunwen Huang,&nbsp;Ruibin Ning,&nbsp;Jiajun Chen,&nbsp;Nianben Zheng,&nbsp;Tian Zhou,&nbsp;Zhiqiang Sun","doi":"10.1016/j.est.2024.114720","DOIUrl":"10.1016/j.est.2024.114720","url":null,"abstract":"<div><div>The problem of solar intermittency can be effectively addressed by solar-to-thermal energy storage using phase change materials (PCMs). Nevertheless, intricate operating scenarios and the extreme environment of PCMs restrict their uses, and the solar energy selective absorption also impedes the attainment of high photo-thermal conversion. In this study, paraffin wax (PW) was combined with styrene-ethylene-butylene-styrene (SEBS) and magnetic nanoparticles Fe<sub>3</sub>O<sub>4</sub> to synthesize a novel kind of magnetic PCMs (PW/SEBS/Fe<sub>3</sub>O<sub>4</sub>). Experimental verification and simulation analysis were carried out. The results have showed that the PW/SEBS/Fe<sub>3</sub>O<sub>4</sub> achieved an overall solar absorptance of 95 %, whose energy storage capacity and photo-thermal conversion were superior to those of pure PW. The PW/SEBS/Fe<sub>3</sub>O<sub>4</sub> showed exceptional thermal and cyclic stability, completed phase transition rapidly, and reached a greater equilibrium temperature with the rise in light intensity. Although the PW/SEBS/Fe<sub>3</sub>O<sub>4</sub> with 1.2 g Fe<sub>3</sub>O<sub>4</sub> has better photo-thermal storage capacity, the PW/SEBS/Fe<sub>3</sub>O<sub>4</sub> with 2.4 g Fe<sub>3</sub>O<sub>4</sub> has more flexible application when considering the magneto-thermal effect. Furthermore, based on the thermo-physical property, the magneto-thermal effect of the magnetic PCMs was simulated using commercial software. This research offers a new concept for solar-thermal uses of building insulation and magnetic thermal switches.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"105 ","pages":"Article 114720"},"PeriodicalIF":8.9,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ambient-pressure relithiation of spent LiFePO4 using alkaline solutions enables direct regeneration of lithium-ion battery cathodes 使用碱性溶液对用过的磷酸铁锂进行常压再ithiation,实现锂离子电池正极的直接再生
IF 8.9 2区 工程技术
Journal of energy storage Pub Date : 2024-11-27 DOI: 10.1016/j.est.2024.114721
Xuejing Qiu , Chenyan Wang , Yongzhi Liu , Qing Han , Lingling Xie , Limin Zhu , Xiaoyu Cao
{"title":"Ambient-pressure relithiation of spent LiFePO4 using alkaline solutions enables direct regeneration of lithium-ion battery cathodes","authors":"Xuejing Qiu ,&nbsp;Chenyan Wang ,&nbsp;Yongzhi Liu ,&nbsp;Qing Han ,&nbsp;Lingling Xie ,&nbsp;Limin Zhu ,&nbsp;Xiaoyu Cao","doi":"10.1016/j.est.2024.114721","DOIUrl":"10.1016/j.est.2024.114721","url":null,"abstract":"<div><div>Lithium iron phosphate (LiFePO<sub>4</sub>) is widely recognized for its cost-effectiveness in manufacturing and high safety during usage, making it a favored choice for electric vehicles and energy storage stations. Nevertheless, the development of efficient and low-cost recycling methods has emerged as an urgent priority due to the economic and environmental benefits associated with it. Here, the present study successfully demonstrates the ambient-pressure relithiation of lithium-deficient LiFePO<sub>4</sub> particles in alkaline solutions. Specifically, the incorporation of reductive sodium nitrite with lower redox potential in the alkaline environment spontaneously repairs the compositional and structural defects, facilitating effective lithium-ion insertion back into the original site. Consequently, the short-term annealing step promotes the formation of more thermodynamically stable particles, resulting in enhanced cycling stability and rate capability comparable to that of the pristine materials. The regenerated LiFePO<sub>4</sub> cathode exhibits improved electrochemical performance in terms of long-term cyclability, high-rate properties and reduced polarization (a high retention of 93 % after 1000 cycles at 5C). The findings of this study suggest the significant potential for utilizing various reductants in an alkaline environment to achieve ambient-pressure relithiation, thereby facilitating the recycling and remanufacturing of spent lithium-ion cathode materials.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"105 ","pages":"Article 114721"},"PeriodicalIF":8.9,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The role of hybrid hydrogen-battery storage in a grid-connected renewable energy microgrid considering time-of-use electricity tariffs 考虑到分时电价,氢电池混合储能在并网可再生能源微电网中的作用
IF 8.9 2区 工程技术
Journal of energy storage Pub Date : 2024-11-27 DOI: 10.1016/j.est.2024.114729
Babangida Modu , Md Pauzi Abdullah , Abdulrahman AlKassem , Mukhtar Fatihu Hamza , Abba Lawan Bukar
{"title":"The role of hybrid hydrogen-battery storage in a grid-connected renewable energy microgrid considering time-of-use electricity tariffs","authors":"Babangida Modu ,&nbsp;Md Pauzi Abdullah ,&nbsp;Abdulrahman AlKassem ,&nbsp;Mukhtar Fatihu Hamza ,&nbsp;Abba Lawan Bukar","doi":"10.1016/j.est.2024.114729","DOIUrl":"10.1016/j.est.2024.114729","url":null,"abstract":"<div><div>Hybrid hydrogen (<span><math><msub><mi>H</mi><mn>2</mn></msub></math></span>)-battery <span><math><mfenced><mi>BT</mi></mfenced></math></span> integrated microgrid has gained significant interest lately as a key element for achieving a zero-emission future, thanks to its wide range of applications. The energy management strategy (EMS) of the <span><math><msub><mi>H</mi><mn>2</mn></msub></math></span>- <span><math><mi>BT</mi></math></span> storage-based microgrid is critical for ensuring efficient and cost-effective electricity generation by controlling the operating point of the storage systems to achieve economic and operational benefits. This paper presents an optimal energy management and sizing strategy for a hybrid <span><math><msub><mi>H</mi><mn>2</mn></msub></math></span>-<span><math><mi>BT</mi></math></span> storage-based grid-connected microgrid, considering two scenarios of Time-of-Use (ToU) electricity tariffs. The uniqueness of this study lies in its improvement of microgrid effectiveness through the optimization of component size and EMS. Among the two scenarios, the “Time of Use-Flat” scenario is more cost-effective and the best option. This conclusion is based on the results which indicate that LSC-SSA method achieved the lowest Annual System Cost (ASC) of $544,818 and the lowest Levelized Cost of Energy (LCOE) of $0.273 in this scenario. These metrics are better compared to the “Flat-Time of Use” scenario, where the LSC-SSA method achieved an ASC of $552,773 and an LCOE of $0.277. Therefore, the “Time of Use-Flat” scenario provides greater cost-effectiveness for the hybrid <span><math><msub><mi>H</mi><mn>2</mn></msub></math></span>-<span><math><mi>BT</mi></math></span> integrated microgrid.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"105 ","pages":"Article 114729"},"PeriodicalIF":8.9,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
TRNSYS dynamic digital twin of hot and cold sensible thermal energy storages: An experimental calibration and validation approach TRNSYS 动态数字孪生冷热显热蓄能器:实验校准和验证方法
IF 8.9 2区 工程技术
Journal of energy storage Pub Date : 2024-11-26 DOI: 10.1016/j.est.2024.114700
Antonio Rosato , Mohammad El Youssef , Hussein Daoud , Ahmed Al-Salaymeh , Mohamed Gaber Ghorab
{"title":"TRNSYS dynamic digital twin of hot and cold sensible thermal energy storages: An experimental calibration and validation approach","authors":"Antonio Rosato ,&nbsp;Mohammad El Youssef ,&nbsp;Hussein Daoud ,&nbsp;Ahmed Al-Salaymeh ,&nbsp;Mohamed Gaber Ghorab","doi":"10.1016/j.est.2024.114700","DOIUrl":"10.1016/j.est.2024.114700","url":null,"abstract":"<div><div>Sensible Thermal Energy Storages (STESs) are attracting significant interest thanks to the fact that they represent an effective solution to address the temporal mismatch between energy supply and energy demand. In this paper, a dynamic simulation model of typical STESs has been developed by using the software TRNSYS 18. The model has been calibrated and validated based on the data measured during a series of field experiments focused on both a hot as well as a cold vertical cylindrical 0.3 m<sup>3</sup> STES equipped with a single internal heat exchanger (IHX). Furthermore, a simulation model has been developed to evaluate the impact of thermal stratification in tanks through the consideration of two distinct configurations, comprising 4 and 20 isothermal tank nodes. The experimental performances of the storages have been analyzed with reference to charging, discharging, simultaneous charging and discharging, natural heat up/cooldown tests, as well as typical daily operation to calibrate and validate the proposed model, providing key field data paving the way for future researches and developments of STESs. The simulation outputs have been compared with the experimental data by means of well-known statistical indicators. The comparison exhibited a good agreement in a wide range of operating conditions, with negligible differences between the 4-node and the 20-node configurations. In particular, the results highlighted reduced normalized root mean square deviations between experimental and simulated heat transfer fluid temperatures, with values ranging from 0.007 up to 0.141 in the case of the hot tank and varying between 0.007 and 0.333 in the case of the cold tank. In addition, acceptable percentage differences between predicted and field data in terms of daily energy during charging and discharging phases equal to −18.96 % and − 23.72 %, respectively, in the case of the hot tank and equal to 16.61 % and − 16.65 %, respectively, in the case of the cold tank have been recognized. The analysis underlined that the developed model accurately represents the dynamic and steady-state performance of both the hot and cold STESs, certifying its suitability in designing, analyzing as well as optimizing STES-based energy systems upon varying operating boundary scenarios.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"105 ","pages":"Article 114700"},"PeriodicalIF":8.9,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Residual-carbon-supported δ-MnO2 as cathodes for aqueous zinc ion batteries with high specific capacity 残余碳支撑的 δ-MnO2 作为高比容量锌离子水电池的阴极
IF 8.9 2区 工程技术
Journal of energy storage Pub Date : 2024-11-26 DOI: 10.1016/j.est.2024.114760
Zhixiong Li , Chengli Wu , Lirui Mao , ChengJie Yin
{"title":"Residual-carbon-supported δ-MnO2 as cathodes for aqueous zinc ion batteries with high specific capacity","authors":"Zhixiong Li ,&nbsp;Chengli Wu ,&nbsp;Lirui Mao ,&nbsp;ChengJie Yin","doi":"10.1016/j.est.2024.114760","DOIUrl":"10.1016/j.est.2024.114760","url":null,"abstract":"<div><div>Manganese-based oxides, as promising cathode materials for aqueous zinc-ion batteries (AZIBs), face limitations due to their slow reaction kinetics and low specific capacity. Therefore, this study employed a two-step acid leaching method to extract residual carbon (RC) from coal gasification fine slag and used a hydrothermal method to grow manganese dioxide nanoflowers on the RC surface. By adjusting the amount of RC incorporated, the optimal loading state and cluster morphology were achieved. Compared with the δ-MnO<sub>2</sub>, the composite material exhibited a high specific capacity of 531 mAh g<sup>−1</sup> at 0.2 A g<sup>−1</sup>. Characterization and electrochemical kinetic analysis of the composite material revealed that the unique nanoflower morphology and RC provided more active sites, shortened ion transport pathways, and increased ion diffusion rates. Furthermore, the inclusion of RC provided more oxygen vacancies, enhancing the specific capacity, and improved the reaction kinetics. Through studies on the charge and discharge mechanisms of the cathode material, it was found that the composite not only facilitated the insertion/extraction of H<sup>+</sup>/Zn<sup>2+</sup> ions but also enhanced crystallization stability during cycling. This research offers a new approach for developing high-performance AZIBs cathode materials and opens a new avenue for utilizing coal-based solid waste.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"105 ","pages":"Article 114760"},"PeriodicalIF":8.9,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723679","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A comparative study on exploring sputtered titanium nitride thin films for high-performance supercapacitors 探索用于高性能超级电容器的溅射氮化钛薄膜的比较研究
IF 8.9 2区 工程技术
Journal of energy storage Pub Date : 2024-11-26 DOI: 10.1016/j.est.2024.114712
Mahnoor Ahmed , Nisar Ahmed , Haseeb Ahmad , Shahid Bashir , Ramesh Subramaniam , Ghulam Ali
{"title":"A comparative study on exploring sputtered titanium nitride thin films for high-performance supercapacitors","authors":"Mahnoor Ahmed ,&nbsp;Nisar Ahmed ,&nbsp;Haseeb Ahmad ,&nbsp;Shahid Bashir ,&nbsp;Ramesh Subramaniam ,&nbsp;Ghulam Ali","doi":"10.1016/j.est.2024.114712","DOIUrl":"10.1016/j.est.2024.114712","url":null,"abstract":"<div><div>Magnetron sputtered titanium nitride (TiN) thin films possessed desirable electrochemical and physical characteristics making them attractive candidates for supercapacitor electrodes. Herein, the electrochemical performance of TiN films prepared via direct and reactive sputtering methods is investigated as electrodes for supercapacitor. Microstructural analysis revealed distinct morphologies, topographies, and crystal structures for each film type, with reactively sputtered TiN (RS) displaying a pyramidal structure indicative of (111) orientation, whereas directly sputtered TiN (DS) exhibited a granular structure. Electrochemical techniques like cyclic voltammetry, galvanic charge-discharge, and electrochemical impedance spectroscopy clarified the charge storage mechanisms and capacitance behavior. RS exhibited a quasi-rectangular CV profile with pseudo-capacitive behavior with low charge transfer resistance and peak specific capacitance of 90 mF cm<sup>−2</sup> along with superior cyclic stability and ion conductivity. Supercapattery configuration was setup to validate those findings using reactive sputtered thin films. It demonstrated enhanced capacitance retention and low charge transfer resistance, highlighting their potential for practical applications in energy storage systems.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"105 ","pages":"Article 114712"},"PeriodicalIF":8.9,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Structural regulation and sodium storage mechanism of high-performance non-graphitic carbon derived from semi coke 半焦衍生高性能非石墨碳的结构调整和钠储存机理
IF 8.9 2区 工程技术
Journal of energy storage Pub Date : 2024-11-26 DOI: 10.1016/j.est.2024.114795
Zhaohua Zhang , Xiaoxiao Qu , Jia Yu , Yuhao Liu , Jiahao Xu , Weiwei Kang , Jianbo Jia , Guangxu Huang , Baolin Xing , Chuanxiang Zhang
{"title":"Structural regulation and sodium storage mechanism of high-performance non-graphitic carbon derived from semi coke","authors":"Zhaohua Zhang ,&nbsp;Xiaoxiao Qu ,&nbsp;Jia Yu ,&nbsp;Yuhao Liu ,&nbsp;Jiahao Xu ,&nbsp;Weiwei Kang ,&nbsp;Jianbo Jia ,&nbsp;Guangxu Huang ,&nbsp;Baolin Xing ,&nbsp;Chuanxiang Zhang","doi":"10.1016/j.est.2024.114795","DOIUrl":"10.1016/j.est.2024.114795","url":null,"abstract":"<div><div>Non-graphitic carbon (NGC) is considered as one of the most promising anodes for sodium-ion batteries (SIBs) because of its low cost and abundant reserves. Nevertheless, there is significant debate regarding the contribution mechanism of sloping and plateau capacity. Herein, a series of NGC with adjustable defect concentration, carbon phases and pore structure are synthesized with semi-coke as precursor to explore the sodium storage mechanism and an “adsorption-insertion-filling” model is proposed based on the in-depth analysis of microstructure and electrochemical behaviors. The very attraction about this work is that the entire discharge curve is divided into three regions for analysis, and the corresponding cause for each region is traced. To be specific, the defects and disordered structure contribute to the surface-controlled absorption behavior in the sloping region &gt;0.1 V, the pseudo-graphitic structure shows diffusion-controlled insertion behavior in the plateau region between 0.1 and 0.05 V, and the closed pores formed by curved graphite-like structure provide plateau capacity (&lt;0.05 V) through the filling of quasi-metallic sodium. This study provides theoretical education for the optimization of NGC anode structure and a novel approach for the excessive value-added utilization of semi coke.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"105 ","pages":"Article 114795"},"PeriodicalIF":8.9,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142706815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Template-free synthesis of hollow titanium dioxide microspheres and amorphous titanium dioxide microspheres with superior lithium and sodium storage performance 无模板合成具有优异锂和钠储存性能的空心二氧化钛微球和无定形二氧化钛微球
IF 8.9 2区 工程技术
Journal of energy storage Pub Date : 2024-11-26 DOI: 10.1016/j.est.2024.114759
Xiangji Li, Kexin Zhang, Hui Ao, Yanan Gong, Kaifeng Yu, Ce Liang
{"title":"Template-free synthesis of hollow titanium dioxide microspheres and amorphous titanium dioxide microspheres with superior lithium and sodium storage performance","authors":"Xiangji Li,&nbsp;Kexin Zhang,&nbsp;Hui Ao,&nbsp;Yanan Gong,&nbsp;Kaifeng Yu,&nbsp;Ce Liang","doi":"10.1016/j.est.2024.114759","DOIUrl":"10.1016/j.est.2024.114759","url":null,"abstract":"<div><div>Hierarchical hollow TiO<sub>2</sub> microspheres (H-TiO<sub>2</sub>) and amorphous solid TiO<sub>2</sub> microspheres (A-TiO<sub>2</sub>) were synthesized using a template-free method. Initially, quasi-monodisperse solid TiO<sub>2</sub> microspheres (A-TiO<sub>2</sub>) were obtained by controlled thermal hydrolysis of titanium sulfate, forming aggregates of amorphous particles, followed by solvothermal treatment to convert the solid structure into a hollow and crystalline H-TiO<sub>2</sub> structure. SEM and TEM images revealed that the morphological evolution from A-TiO<sub>2</sub> to H-TiO<sub>2</sub> conforms precisely to the inside-out Ostwald ripening mechanism. The unique hollow layered structure endows H-TiO<sub>2</sub> with a large specific surface area of 93.3 m<sup>2</sup>/g and a rich porous structure. When used as an anode material for LIBs and SIBs, H-TiO<sub>2</sub> exhibits superior cycling stability and rate performance compared to A-TiO<sub>2</sub>. For LIBs, H-TiO<sub>2</sub> achieves a reversible capacity of 342.2 mA h g<sup>−1</sup> at a 0.2C charge/discharge rate and retains unprecedented long-term stability at high current densities (258.5 mA h g<sup>−1</sup> after 1000 cycles at 5C and 220.4 mA h g<sup>−1</sup> after 1000 cycles at 10C). For SIBs, H-TiO<sub>2</sub> exhibits a reversible capacity of 271.7 mA h g<sup>−1</sup> at 0.2C, with specific capacities of 173.4 mA h g<sup>−1</sup> after 1000 cycles at 1C and 101.4 mA h g<sup>−1</sup> after 2000 cycles at 5C. Furthermore, kinetic calculations demonstrate that H-TiO<sub>2</sub> possesses higher Li<sup>+</sup> and Na<sup>+</sup> diffusion rates, adsorption capacities, and conductivity, further explaining its excellent electrochemical performance.</div></div>","PeriodicalId":15942,"journal":{"name":"Journal of energy storage","volume":"105 ","pages":"Article 114759"},"PeriodicalIF":8.9,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142723596","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信