Materials Today Energy最新文献_第8页

Lignite derived nanocarbon as surface passivator and co-sensitizer in DSSC 褐煤衍生纳米碳作为 DSSC 的表面钝化剂和共敏化剂

IF 9.3 2区材料科学

Materials Today Energy Pub Date : 2024-02-27 DOI: 10.1016/j.mtener.2024.101539

Akshatha A. Rao, Shanyukta Upadhyay, Santhosh Narendhiran, Imran Jafri R, Manoj Balachandran

引用次数: 0

Enhancing grain growth of CsFA-based lead halide perovskite thin films through PbI2 precursor engineering in vapor-solid reaction 通过气固反应中的 PbI2 前驱体工程，促进基于 CsFA 的卤化铅包晶石薄膜的晶粒生长

IF 9.3 2区材料科学

Materials Today Energy Pub Date : 2024-02-27 DOI: 10.1016/j.mtener.2024.101540

Qiang Tan, Changyu Duan, Yuanyuan Chen, Anqi Kong, Shenghan Hu, Yichen Dou, Jianfeng Lu, Guijie Liang, Zhiliang Ku

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Cobalt Nanoparticles Embedded in Nitrogen-doped Carbon Nanofibers to Enhance Redox Kinetics for Long-Cycling Sodium-Sulfur Batteries 氮掺杂碳纳米纤维中嵌入钴纳米颗粒，提高长周期钠硫电池的氧化还原动力学性能

IF 9.3 2区材料科学

Materials Today Energy Pub Date : 2024-02-26 DOI: 10.1016/j.mtener.2024.101536

Peipei Zhi, Yuruo Qi, Jing Zhao, Haifeng Ding, Qing Zhao, Yi Li, Maowen Xu

{"title":"Cobalt Nanoparticles Embedded in Nitrogen-doped Carbon Nanofibers to Enhance Redox Kinetics for Long-Cycling Sodium-Sulfur Batteries","authors":"Peipei Zhi, Yuruo Qi, Jing Zhao, Haifeng Ding, Qing Zhao, Yi Li, Maowen Xu","doi":"10.1016/j.mtener.2024.101536","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101536","url":null,"abstract":"The shuttle effect resulting from severe volume expansion and polysulfide dissolution imposes limitations to the application of sodium-sulfur (Na-S) batteries. Herein, a three-dimensional self-supported electrode comprised of cobalt nanoparticles embedded in nitrogen-doped carbon nanofibers (CoNCNF) is constructed to accommodate sulfur as cathode for Na-S batteries. The carbon fiber framework facilitates direct electrons transmission and reduces overall contact impedance of electrode. The abundant pore structure not only promotes electrolyte infiltration but also ensures high loading of sulfur, and provides space for volume expansion during charging and discharging. Most significantly, CoNCNF carrier accelerate the conversion rate of sodium polysulfides (NaPSs) into NaS and guide NaS deposition on its surface in a three-dimensional progressive nucleation (3DP) mode, resulting in a high NaS deposition capacity and outstanding long-term cycling performance. When coupled with a Na metal anode, the CoNCNF/S composite cathode exhibits stable electrochemical properties with a capacity up to 1030.2 mA h g after 300 cycles at 0.2C and excellent rate performance.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"50 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140003405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Unveiling Charge Compensation Mechanisms in Na2/3MgxNi1/3-xMn2/3O2 Cathode Materials: Insights into Cationic and Anionic Redox 揭示 Na2/3MgxNi1/3-xMn2/3O2 阴极材料中的电荷补偿机制：对阳离子和阴离子氧化还原的见解

IF 9.3 2区材料科学

Materials Today Energy Pub Date : 2024-02-22 DOI: 10.1016/j.mtener.2024.101534

Yanli Zhang, Zengqing Zhuo, Tianran Yan, Wenjuan Zhang, Xiaoning Li, Jiakun Zhou, Wenzhang Zhou, Yan Feng, Liang Zhang, Jing Mao, Ding Zhang, Wanli Yang, Jinghua Guo, Kehua Dai

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The role of the local structural properties in the electrochemical characteristics of Na1-xFe1-yNiyO2 cathodes 局部结构特性在 Na1-xFe1-yNiyO2 阴极电化学特性中的作用

IF 9.3 2区材料科学

Materials Today Energy Pub Date : 2024-02-02 DOI: 10.1016/j.mtener.2024.101519

Wojciech Olszewski, Sourav Baiju, Payam Kaghazchi, Carlo Marini, Benoit Mortemard de Boisse, Masashi Okubo, Atsuo Yamada, Takashi Mizokawa, Naurang Lal Saini, Laura Simonelli

{"title":"The role of the local structural properties in the electrochemical characteristics of Na1-xFe1-yNiyO2 cathodes","authors":"Wojciech Olszewski, Sourav Baiju, Payam Kaghazchi, Carlo Marini, Benoit Mortemard de Boisse, Masashi Okubo, Atsuo Yamada, Takashi Mizokawa, Naurang Lal Saini, Laura Simonelli","doi":"10.1016/j.mtener.2024.101519","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101519","url":null,"abstract":"The natural abundance of sodium makes the Na-ion batteries (SIBs) attractive devices in the framework of a global economy change toward net zero CO2 emission. SIBs naturally deliver relatively lower energy density respect to Li-ion counterparts (LiBs), however, their lower cost and fast charge/discharge-ability make them a promising competitor to LiBs to load level the intermittent power from renewable energy sources for smart grids or renewable power stations. The O3-type NaFeO2 is a promising candidate for SIBs cathodes, even if the irreversible structural transition occurring during Na-ion extraction/insertion seriously hinders its practical application. Partial replacement of Fe by Ni significantly improves its electrochemical properties. The possible reasons of such improvement are here investigated accessing the details on the Fe and Ni local electronic and structural properties by means of x-ray absorption spectroscopy and spin-polarized DFT calculations. Different Ni concentrations and charge states have been analysed. The results support the stability of the electronic properties of Fe and Ni as a function of cycling in partially substituted system. Instead, the local structure is affected by the Fe substitution as well by the charge/discharge cycling. In particular, the decrease of Fe-O covalency and the local disorder by partial substitution Fe by Ni seems at the origin of the improved performances.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"9 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139661843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Crystallization dynamics control in perovskite films using alkylamines as additives in a 2-methoxyethanol-based anti-solvent free process 在基于 2-甲氧基乙醇的无溶剂反工艺中使用烷基胺作为添加剂控制过氧化物薄膜的结晶动力学

IF 9.3 2区材料科学

Materials Today Energy Pub Date : 2024-02-02 DOI: 10.1016/j.mtener.2024.101516

Sung Hun Lee, Seungyeon Hong, Geun-young Yoon, Jin woo Kim, Hyun Hwi Lee, Hyo Jung Kim

{"title":"Crystallization dynamics control in perovskite films using alkylamines as additives in a 2-methoxyethanol-based anti-solvent free process","authors":"Sung Hun Lee, Seungyeon Hong, Geun-young Yoon, Jin woo Kim, Hyun Hwi Lee, Hyo Jung Kim","doi":"10.1016/j.mtener.2024.101516","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101516","url":null,"abstract":"We found that the trace amount of alkylamine ligands added to perovskite solutions can act as a nucleation promoter in an anti-solvent free process. We studied the effects of adding alkylamines with different alkyl chain lengths on perovskite film formation using a 2-methoxyethanol single solvent system without adding a Lewis base solvent. Compared to a porous film prepared without additives, the film with oleylamine (OAm) containing an 18-carbon alkyl chain exhibited a smoother surface and denser interior. At optimal conditions, the perovskite solar cell with the OAm-based film exhibited an enhanced device performance of 21.01% compared to that of the pristine film (11.65%). To investigate how alkylamines support the formation of the uniform perovskite film without the assistance of a Lewis base solvent or anti-solvent process, we employed in situ grazing incidence wide-angle X-ray scattering during spin-coating. As a result, we discovered that adding OAm with longer alkyl chains leaded to more nucleation in less time promoting the formation of the dense film. Furthermore, we confirmed that the effect of OAm addition was similar in other solvent systems. Based on the results, we propose a new pathway utilizing alkylamines to control crystallization dynamics in the anti-solvent free process.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"198 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-02-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139677941","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

F-doped Co-free LiNixMn1-xO2 (0.7≤x≤0.9) Cathodes for Ameliorating Electrochemical Performance of Li-ion Batteries 用于改善锂离子电池电化学性能的掺 F 无 Co LiNixMn1-xO2 (0.7≤x≤0.9) 阴极

IF 9.3 2区材料科学

Materials Today Energy Pub Date : 2024-02-01 DOI: 10.1016/j.mtener.2024.101520

So-Yeon Ahn, Deok-Hye Park, Ji-Hwan Kim, Jae-Sung Jang, Won-Chan Kim, Gang-In Lee, Jong-Won Lim, Ji-Min Hong, Kyung-Won Park

{"title":"F-doped Co-free LiNixMn1-xO2 (0.7≤x≤0.9) Cathodes for Ameliorating Electrochemical Performance of Li-ion Batteries","authors":"So-Yeon Ahn, Deok-Hye Park, Ji-Hwan Kim, Jae-Sung Jang, Won-Chan Kim, Gang-In Lee, Jong-Won Lim, Ji-Min Hong, Kyung-Won Park","doi":"10.1016/j.mtener.2024.101520","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101520","url":null,"abstract":"Ni-rich LiNiCoMnO2 cathodes, which exhibit high energy densities and layered structures, have been studied For Li-ion batteries (LIBs) with high capacities and excellent stabilities. However, the high cost and price fluctuation of Co as the main element in the cathodes remain severe issue for the stable development of LIBs. Therefore, in this study, F-doped Co-free Ni-rich LiNixMn1-xO2 (0.7 ≤ x ≤ 0.9) cathodes were prepared for high-performance LIBs. With increasing Ni content, the undoped Ni-rich LiNixMn1-xO2 cathodes exhibited increased discharge capacities and decreased stabilities. In contrast, the F-doped Ni-rich LiNixMn1-xO2 cathodes delivered higher cycle retentions at 0.5 C for 100 cycles compared to the undoped cathodes. In addition, the F doping of Ni-rich LiNixMn1-xO2 cathodes can facilitate Li-ion diffusion, retaining their reversibility and high capacities at high current densities.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"294 2 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139661663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Micro-scale mismatches of electrically conductive and mechanically resilient regimes in Li-variant sulfide conductors 硫化锂变体导体中导电和机械弹性状态的微尺度失配

IF 9.3 2区材料科学

Materials Today Energy Pub Date : 2024-02-01 DOI: 10.1016/j.mtener.2024.101517

Ji-Su Kim, Sung Soo Shin, Hyoungchul Kim

{"title":"Micro-scale mismatches of electrically conductive and mechanically resilient regimes in Li-variant sulfide conductors","authors":"Ji-Su Kim, Sung Soo Shin, Hyoungchul Kim","doi":"10.1016/j.mtener.2024.101517","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101517","url":null,"abstract":"Li-ion-conductive sulfide electrolytes have attracted significant attention with regard to the development of superior solid-state batteries owing to their high ionic conductivity and ductile mechanical properties. Nevertheless, the relationship between the variations in Li content resulting from extraction and insertion in sulfide electrolytes and their subsequent influence on the electrochemical and mechanical properties remains unelucidated. In this study, we simulated the electrochemical operating conditions of glass sulfides through experimental and computational methods. Our investigation focused on the microscale reversibility of their electrochemical and mechanical properties. In Li-variant glass sulfides, (Li2S)0.75(1−x)(P2S5)0.25S0.75x, we demonstrated that 50% Li deficiency induced polymerization, resulting in a 98% decrease in Li-ion conductivity. Furthermore, we posit that changes in the mechanical properties of solid electrolytes during plastic deformation can be evaluated using Pugh’s ratio. In the case of Li deficiency, the Pugh’s ratio is reduced by 24%, and the solid electrolyte becomes extremely brittle. Interface deterioration in solid-state batteries is accelerated by the irreversible elastic hardening resulting from delithiation and polymerization of solid electrolytes during continuous electrochemical cycling. These evaluation approaches, which are based on Li-variant glass sulfides, afford guidelines for designing electrolytes suitable for cathodes.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"1 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139678107","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Buried interface defects 2-bromo-1-ethylpyridinium tetrafluoroborate passivates tin oxide layer for high performance planar perovskite solar cells 埋入式界面缺陷 2-溴-1-乙基吡啶鎓四氟硼酸盐钝化氧化锡层，用于高性能平面过氧化物太阳能电池

IF 9.3 2区材料科学

Materials Today Energy Pub Date : 2024-02-01 DOI: 10.1016/j.mtener.2024.101514

Thambidurai M, Herlina Arianita Dewi, Wang Xizu, Anil Kanwat, Annalisa Bruno, Nripan Mathews, Cuong Dang, Hung D. Nguyen

{"title":"Buried interface defects 2-bromo-1-ethylpyridinium tetrafluoroborate passivates tin oxide layer for high performance planar perovskite solar cells","authors":"Thambidurai M, Herlina Arianita Dewi, Wang Xizu, Anil Kanwat, Annalisa Bruno, Nripan Mathews, Cuong Dang, Hung D. Nguyen","doi":"10.1016/j.mtener.2024.101514","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101514","url":null,"abstract":"The electron transport layer (ETL)/perovskite interfaces play a crucial role in facilitating efficient charge transfer and minimizing recombination losses, which are key factors for achieving high power conversion efficiency (PCE) in perovskite solar cells (PSCs). Herein, a novel ionic liquid (IL) called 2-bromo-1-ethylpyridinium tetrafluoroborate (BEPBF4) is added between tin oxide (SnO2) and perovskite layers to improve the photovoltaic performance of PSCs. The BEPBF4 interface modification not only reduces the defect density, increases the crystallinity, and aligns the energy bands at the interface, but also shortens the lifetime of the charge carriers, resulting in improved PCE and stability. Consequently, the device modified with BEPBF4 achieved a PCE of 20.14% and retained 94% of the initial PCE without encapsulation, in contrast to the control device (18.41%), which retained only 82% of the initial PCE after 1000 h of storage at ambient conditions. In addition, the BEPBF4-PSCs exhibited significantly better thermal stability, retaining 64% of the initial PCE after 400 h of continuous thermal aging at 85 °C, compared to only 31% for the unencapsulated pristine device.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"56 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139670297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Oxygen Vacancy Rich δ-MnO2 Nanosheets Encapsulating Single Cobalt Atoms-Anchored Carbon Nanotubes for Efficient Oxygen Evolution 富氧空位δ-MnO2 纳米片封装单钴原子填充碳纳米管，实现高效氧气进化

IF 9.3 2区材料科学

Materials Today Energy Pub Date : 2024-02-01 DOI: 10.1016/j.mtener.2024.101515

Yan Cheng, Bo Cao, Xuan Xu, Lele Peng, Baocang Liu, Jinlu He, Jun Zhang

{"title":"Oxygen Vacancy Rich δ-MnO2 Nanosheets Encapsulating Single Cobalt Atoms-Anchored Carbon Nanotubes for Efficient Oxygen Evolution","authors":"Yan Cheng, Bo Cao, Xuan Xu, Lele Peng, Baocang Liu, Jinlu He, Jun Zhang","doi":"10.1016/j.mtener.2024.101515","DOIUrl":"https://doi.org/10.1016/j.mtener.2024.101515","url":null,"abstract":"Oxygen vacancy (OVac) and interface engineering are effective tactics for regulating the electronic structure of electrocatalysts and optimizing the absorption/desorption of reactants and intermediates on the catalyst surface to enhance the oxygen evolution reaction (OER). Herein, a self-supported electrocatalyst, comprising δ-MnO2 nanosheets grown on Co single atoms (CoSAs) anchored on N-doped carbon nanotubes (NCNTs) embedded with Co nanoparticle on a carbon cloth (CC) (δ-MnO2/CoNP@CoSAs-NCNTs/CC), was fabricated. Through in-situ growth of δ-MnO2 nanosheets on CoNP@CoSAs-NCNTs/CC, the number of OVac is increased, as proved by X-ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR), and Positron annihilation lifetime spectrometer (PALS), due to the redox between MnO2 and Co. Experimental results and theoretical calculations confirm that the formation of OVac rich δ-MnO2 nanosheets and the construction of heterogeneous interface between δ-MnO2 and CoSAs-NCNTs endow the electrocatalyst with good conductivity, fast charge transfer, and multiple active sites, leading to rapid OER reaction kinetics. Therefore, the δ-MnO2/CoNP@CoSAs-NCNTs/CC electrocatalyst demonstrates remarkable OER performance, requiring only 165 mV overpotential to reach a current density of 10 mA cm−2 in an alkaline solution.","PeriodicalId":18277,"journal":{"name":"Materials Today Energy","volume":"38 1","pages":""},"PeriodicalIF":9.3,"publicationDate":"2024-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139661573","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0