Batteries & Supercaps最新文献

筛选
英文 中文
Tilt Engineering in Prussian White Cathode Na1+xFe[Fe(CN)6] via Mg-doping for Enhanced Electrochemical Performance in Na-ion Batteries 镁掺杂普鲁士白阴极Na1+xFe[Fe(CN)6]的倾斜工程提高钠离子电池的电化学性能
IF 4.7 4区 材料科学
Batteries & Supercaps Pub Date : 2025-03-06 DOI: 10.1002/batt.202500045
Ashwani Tyagi, Dr. Sreeraj Puravankara
{"title":"Tilt Engineering in Prussian White Cathode Na1+xFe[Fe(CN)6] via Mg-doping for Enhanced Electrochemical Performance in Na-ion Batteries","authors":"Ashwani Tyagi,&nbsp;Dr. Sreeraj Puravankara","doi":"10.1002/batt.202500045","DOIUrl":"10.1002/batt.202500045","url":null,"abstract":"<p>Due to their robust open framework structure and facile synthesis techniques, Prussian blue analogs (PBAs) can be a suitable and cost-effective cathode for Na-ion batteries. Despite higher sodium content and low defects, the Prussian white (PW) still shows lower reversible capacity due to the limited participation of low-spin Fe and restricted Na-ion diffusion due to non-optimized octahedral tilts. Here, we report improving the electrochemical performance of PW by optimizing the octahedral tilts through Mg doping. The pristine Na<sub>1.8</sub>Fe[Fe(CN)<sub>6</sub> ⋅ 2.75H<sub>2</sub>O delivers the reversible capacity of 127 mAh g<sup>−1</sup> with a capacity retention of 69 % after 250 cycles. However, 10 % Mg-doped samples Na<sub>1.81</sub>Mg<sub>0.09</sub>Fe<sub>0.81</sub>[Fe(CN)<sub>6</sub>] ⋅ 2.58H<sub>2</sub>O deliver an improved reversible capacity of 138.2 mAh g<sup>−1</sup> and capacity retention of 85 % after 250 cycles at C/10 rate. By replacing Fe, Mg incorporation into the Na<sub>1+x</sub>Fe[Fe(CN)<sub>6</sub>] framework increases the electron density, which is propagated throughout the −Fe−CN−Fe−NC− chain and weakens the strong CN ligand field. This results in the participation of additional low-spin Fe in the electrochemical reaction. Mg incorporation also provides structural stability by reducing the distortion magnitude and enhancing diffusion kinetics by optimizing the octahedral tilt angle to improve the battery metrics of the cathode.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"8 9","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144935087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Unique Li Composite Anode with LiF on the Surface and Li-Sn Alloy Inside for Next Generation Li Metal Batteries 新一代锂金属电池用表面含锂、内部含锂锡合金的独特锂复合阳极
IF 4.7 4区 材料科学
Batteries & Supercaps Pub Date : 2025-03-04 DOI: 10.1002/batt.202500031
Zhifeng Xiao, Jinbiao Chen, Haitao Zhang, Kaichen Yu, Jie Li, Xifang Li, Abdullah N. Alodhayb, Zhicong Shi
{"title":"Unique Li Composite Anode with LiF on the Surface and Li-Sn Alloy Inside for Next Generation Li Metal Batteries","authors":"Zhifeng Xiao,&nbsp;Jinbiao Chen,&nbsp;Haitao Zhang,&nbsp;Kaichen Yu,&nbsp;Jie Li,&nbsp;Xifang Li,&nbsp;Abdullah N. Alodhayb,&nbsp;Zhicong Shi","doi":"10.1002/batt.202500031","DOIUrl":"10.1002/batt.202500031","url":null,"abstract":"<p>Lithium metal anode (LMA) is considered a promising anode with low electrochemical redox potential and ultrahigh theoretical specific capacity (3680 mAh g<sup>−1</sup>) for next-generation high-energy batteries. However, the practical usage of LMA is still limited by the uncontrolled lithium dendrite growth, huge volume expansion, and low coulombic efficiency due to inhomogeneous lithium stripping/plating and side reactions with electrolytes. In this work, a unique Li composite anode (LiF-Li-Li<sub>22</sub>Sn<sub>5</sub>@Ni) is prepared for the first time via a facile one-step thermal fusion method. The LiF-Li-Li<sub>22</sub>Sn<sub>5</sub>@Ni anode consists of LiF on the surface, with Li−Sn alloy and Ni inside. Among them, Sn serves as the lithiophilic site, which reduces the nucleation overpotential of lithium and inhibits the formation of dendrites. Ni, which is chemically inert to Li, can maintain the structural stability of the LiF-Li-Li<sub>22</sub>Sn<sub>5</sub>@Ni anode. Furthermore, the LiF on the surface can inhibit Li dendrite growth and induce uniform Li deposition. As a result, the performance of cell is remarkably improved, with more than 1500 hours of cycling in a symmetrical cell at 1 mA cm<sup>−2</sup> for 1 hour, and a capacity retention of 88.4 % after 800 cycles for the full cell assembled with LFP.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"8 9","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144934961","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Constructing an Expandable Molecular Chain as a Functionalized Flexible Matrix to Achieve Lithium-Free Anode 构建可扩展分子链作为功能化柔性矩阵以实现无锂阳极
IF 4.7 4区 材料科学
Batteries & Supercaps Pub Date : 2025-03-02 DOI: 10.1002/batt.202500033
Jiaqing Cui, Kun Wang, Yapeng Shi, Xinxin Yang, Ruming Yuan, Jingmin Fan, Mingsen Zheng, Quanfeng Dong
{"title":"Constructing an Expandable Molecular Chain as a Functionalized Flexible Matrix to Achieve Lithium-Free Anode","authors":"Jiaqing Cui,&nbsp;Kun Wang,&nbsp;Yapeng Shi,&nbsp;Xinxin Yang,&nbsp;Ruming Yuan,&nbsp;Jingmin Fan,&nbsp;Mingsen Zheng,&nbsp;Quanfeng Dong","doi":"10.1002/batt.202500033","DOIUrl":"10.1002/batt.202500033","url":null,"abstract":"<p>Lithium metal has been considered the most ideal choice for the anode in rechargeable high energy density batteries. Direct metal anode is a plating/stripping process without any self-supporting framework, thus making the metal electrodes susceptible to collapse and difficult for the repeating processes. Herein, we construct a stretchable molecular chain as a flexible skeleton to achieve the lithium repeated plating/stripping. The Cu<sub>x</sub>S-In<sub>2</sub>S<sub>3</sub> can in situ be converted into lithiophilic LixIny and Li<sub>2</sub>S composites during the lithium deposition process in which an “expandable molecule chains” is formed through the S connections. Once formed, the lithiophilic chains remain existing stable but just their upright state changes thus serving as a functionalized flexible matrix (FFM) for the lithium dissolution and deposition process. Benefiting from these features, the anode-free full cells FFM||LFP display superior cycling stability and long lifespan, with a high-capacity retention of 86.7 % at 0.2 C-rate after 100 cycles. These explorations provide new strategies for developing high-performance ‘Anode-free’ lithium metal battary (AFLMB).</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"8 9","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144935196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Germanium Nanowires As Anode Material for Lithium-Ion Batteries With Ability To Charge At Subzero Temperatures 锗纳米线作为锂离子电池负极材料,具有零下充电能力
IF 4.7 4区 材料科学
Batteries & Supercaps Pub Date : 2025-03-02 DOI: 10.1002/batt.202400748
Ilya Gavrilin, Ivan Marinkin, Prof. Alexander Skundin, Prof. Tatiana Kulova, Alexander Pavlikov, Lidiya Volkova, Roman Volkov, Nickolay Borgardt, Alexey Merkulov, Filipp Napolskiy, Anna Rudnykh, Victor Krivchenko
{"title":"Germanium Nanowires As Anode Material for Lithium-Ion Batteries With Ability To Charge At Subzero Temperatures","authors":"Ilya Gavrilin,&nbsp;Ivan Marinkin,&nbsp;Prof. Alexander Skundin,&nbsp;Prof. Tatiana Kulova,&nbsp;Alexander Pavlikov,&nbsp;Lidiya Volkova,&nbsp;Roman Volkov,&nbsp;Nickolay Borgardt,&nbsp;Alexey Merkulov,&nbsp;Filipp Napolskiy,&nbsp;Anna Rudnykh,&nbsp;Victor Krivchenko","doi":"10.1002/batt.202400748","DOIUrl":"10.1002/batt.202400748","url":null,"abstract":"<p>The aim of this work is to study of germanium nanowires as low temperature and high charging rate lithium-ion battery anode material. Using a full cell with a cathode based on NMC811 and an anode based on synthesized germanium nanostructures in combination with the proposed electrolyte composition, we demonstrate the ability to charge and cycle the battery at temperatures as low as −40 °C. The results generally indicate that using germanium nanowires as anode material in lithium-ion batteries may solve the problem of their reversible and safe charging at sub-zero temperatures.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"8 8","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-03-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144811307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Boosting the Mechanical and Electrochemical Performance of MnO2 Dry Electrode with Bentonite for Ampere-Hour Aqueous Zn-ion Batteries 膨润土提高安培小时水锌电池MnO2干电极的力学和电化学性能
IF 4.7 4区 材料科学
Batteries & Supercaps Pub Date : 2025-02-27 DOI: 10.1002/batt.202400757
Assoc. Prof. Haitao Zhou, Huanggang Wang, Assoc. Prof. Jian-Chun Wu, Prof. Hongquan Gao, Haiyun Zhou, Yafei Shi, Jie Gu
{"title":"Boosting the Mechanical and Electrochemical Performance of MnO2 Dry Electrode with Bentonite for Ampere-Hour Aqueous Zn-ion Batteries","authors":"Assoc. Prof. Haitao Zhou,&nbsp;Huanggang Wang,&nbsp;Assoc. Prof. Jian-Chun Wu,&nbsp;Prof. Hongquan Gao,&nbsp;Haiyun Zhou,&nbsp;Yafei Shi,&nbsp;Jie Gu","doi":"10.1002/batt.202400757","DOIUrl":"10.1002/batt.202400757","url":null,"abstract":"<p>Aqueous zinc-ion batteries, distinguished by their robust safety, abundance, and cost-effectiveness, represent an ideal solution for wearable devices, backup power sources, and microgrid energy storage applications. Among various cathode materials, MnO<sub>2</sub> stands out as one of the most promising candidates due to its high potential relative to Zn, high theoretical specific capacity, low cost, and non-toxicity. However, the electrochemical performance of MnO<sub>2</sub> cathode is hindered by Mn death and pH fluctuations. Additionally, the internal inhomogeneity resulting from solvent evaporation during the slurry coating process further compromises their stability. In this study, we introduce a modification using sodium-based bentonite and successfully fabricate high-loading industrial-grade electrolytic MnO<sub>2</sub> cathode through a pilot-scale solvent-free dry process. The sodium-based bentonite enhances the structural stability of the electrode by forming Na−F bonds with polytetrafluoroethylene and optimizes Zn<sup>2+</sup> transport through its ion-exchange properties to regulate pH. Impressively, high-loading Ben-SFC//Zn battery, with a loading exceeding 10 mg cm<sup>−2</sup>, maintains a coulombic efficiency above 98 % and capacity of 80 % after approximately 400 cycles. Similarly, a 3Ah aqueous pouch cell demonstrates stable cycling over 400 cycles. This research not only addresses the challenges in manufacturing process of practical high-loading MnO<sub>2</sub> dry electrodes but also elevates the electrochemical performance of batteries.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"8 8","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144809307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Siloxane-Based Polymer Gel Electrolytes for Sodium Metal Batteries with Long Lifespan at High Rates and Low Temperatures 硅氧烷基聚合物凝胶电解质在高速率和低温下具有长寿命的钠金属电池
IF 4.7 4区 材料科学
Batteries & Supercaps Pub Date : 2025-02-26 DOI: 10.1002/batt.202500066
Yu Xie, Dafeng Wei, Junqiao Huang, Zhichuan Shen, Mengxue Wu, Xuan Ye, Zekai Chen, Song Xiao, Jianwei Chen, Abdullah N. Alodhayb, Ping Chen, Zhicong Shi
{"title":"Siloxane-Based Polymer Gel Electrolytes for Sodium Metal Batteries with Long Lifespan at High Rates and Low Temperatures","authors":"Yu Xie,&nbsp;Dafeng Wei,&nbsp;Junqiao Huang,&nbsp;Zhichuan Shen,&nbsp;Mengxue Wu,&nbsp;Xuan Ye,&nbsp;Zekai Chen,&nbsp;Song Xiao,&nbsp;Jianwei Chen,&nbsp;Abdullah N. Alodhayb,&nbsp;Ping Chen,&nbsp;Zhicong Shi","doi":"10.1002/batt.202500066","DOIUrl":"10.1002/batt.202500066","url":null,"abstract":"<p>To address the scarcity of lithium metal resources and the leakage issues associated with traditional liquid batteries, the development of solid-state sodium metal batteries (SMBs) is necessary. However, the advancement of solid SMBs has been significantly impeded by the low ionic conductivity of solid electrolytes and poor electrode compatibility. To overcome these challenges, this study employs an in-situ polymerization method to synthesize a gel polymer electrolyte, by incorporating 3-(Trimethoxysilyl)propyl methacrylate (TPM) into the polymer network. When 5 % TPM is added, the room-temperature ionic conductivity and sodium-ion transference number of GPE are notably enhanced to 4.54×10<sup>−2</sup> S cm<sup>−1</sup> and 0.58, respectively, with an oxidation voltage reaching 4.59 V. Due to the formation of a dense SEI film rich in F and Cl on the surface of sodium metal, the sodium symmetric batteries using GPE-TPM-5 can work stably for more than 3200 h at the current density of 0.1 mA cm<sup>−2</sup>. The NVP|GPE-TPM-5|Na batteries exhibit excellent cycle life of over 15000 cycles at a rate of 10 C, with a capacity retention rate of 91 %. It also demonstrates more than 800 cycles with a capacity retention rate of 94 % at −20 °C and 1C. This research provides a new approach for preparing gel polymer electrolytes for SMBs with superior long-term cycling performance at a high rate and a low temperature.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"8 9","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144935427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Correlating Self-Discharge and Cycling Performance of Batteries to Fasten Electrolytes Development 将电池的自放电和循环性能联系起来,加快电解质的开发
IF 4.7 4区 材料科学
Batteries & Supercaps Pub Date : 2025-02-25 DOI: 10.1002/batt.202400810
Jiayi Zhang, Boyu Wang, Laisuo Su
{"title":"Correlating Self-Discharge and Cycling Performance of Batteries to Fasten Electrolytes Development","authors":"Jiayi Zhang,&nbsp;Boyu Wang,&nbsp;Laisuo Su","doi":"10.1002/batt.202400810","DOIUrl":"10.1002/batt.202400810","url":null,"abstract":"<p>The development of next-generation batteries with high energy density requires the use of novel electrode materials with high specific energy density such as lithium metal anode, silicon anode, high-Ni LiNi<sub>x</sub>Mn<sub>y</sub>Co<sub>z</sub>O<sub>2</sub> cathode, and sulfur cathode. The stability of these materials and their poor compatibility with conventional electrolytes limit their application, and developing novel electrolytes is one of the most promising strategies to tackle the challenge. The current electrolyte development highly relies on expert knowledge and expertise through a trial-and-error approach, which is very time-consuming. Machine learning (ML) and artificial intelligence (AI) approaches have attracted attention to accelerating the process. However, gathering high-quality data from experimental procedures to train ML models is a laborious process, especially when the problem statements cross over to device-level applications. Here, we find a strong correlation between the self-discharge behavior of lithium-metal batteries and their cycling aging performance. As the self-discharge measurement can be done within a few days compared to months for cycling tests, the finding provides a strategy to collect high-quality data in a short period that can be used as input for ML and AI approaches for developing advanced electrolytes in next-generation batteries.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"8 8","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144809262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Sodium Manganese Hexacyanoferrate: Characterization as Sodium-Ion Battery Cathode Material, Full Cell Cycling with Hard Carbon and Post-Mortem Analyses 六氰高铁酸锰钠:作为钠离子电池正极材料的表征,硬碳全电池循环和事后分析
IF 4.7 4区 材料科学
Batteries & Supercaps Pub Date : 2025-02-25 DOI: 10.1002/batt.202500015
Sebastian Büchele, Valeriu Mereacre, Nicole Bohn, Pirmin Stüble, Xuebin Wu, Noah Keim, Ruochen Xu, Holger Geßwein, Wenzhe Sun, Grigor Vrhovac, Michael Pordzik, Thomas Bergfeldt, Sylvio Indris, Werner Bauer, Helmut Ehrenberg, Joachim R. Binder
{"title":"Sodium Manganese Hexacyanoferrate: Characterization as Sodium-Ion Battery Cathode Material, Full Cell Cycling with Hard Carbon and Post-Mortem Analyses","authors":"Sebastian Büchele,&nbsp;Valeriu Mereacre,&nbsp;Nicole Bohn,&nbsp;Pirmin Stüble,&nbsp;Xuebin Wu,&nbsp;Noah Keim,&nbsp;Ruochen Xu,&nbsp;Holger Geßwein,&nbsp;Wenzhe Sun,&nbsp;Grigor Vrhovac,&nbsp;Michael Pordzik,&nbsp;Thomas Bergfeldt,&nbsp;Sylvio Indris,&nbsp;Werner Bauer,&nbsp;Helmut Ehrenberg,&nbsp;Joachim R. Binder","doi":"10.1002/batt.202500015","DOIUrl":"10.1002/batt.202500015","url":null,"abstract":"<p>Sodium manganese hexacyanoferrate Na<sub>2</sub>Mn[Fe(CN)<sub>6</sub>] (NaMn<i>HCF</i>) is a promising cathode material for sodium-ion batteries, owing to its voltage profile similar to that of lithium iron phosphate (LFP) and its use of abundant, inexpensive resources. This study presents full cell cycling data for NaMn<i>HCF</i> against hard carbon (HC) anodes with various common carbonate-based electrolytes across different voltage windows. Post-mortem analyses indicate that, in addition to NaMn<i>HCF</i> degradation, Na<sup>+</sup>-ion inventory loss significantly contributes to capacity decline during cycling. Surprisingly, an ICP-OES analysis of the post-mortem anodes show that the correct electrolyte choice can entirely prevent the commonly cited manganese dissolution of NaMn<i>HCF</i> during cycling. This work also highlights methods for characterizing and processing NaMn<i>HCF</i> and the broader Prussian White family of materials, helping to introduce these materials to a wider audience. Finally, a comparison between NaMn<i>HCF</i>/HC and LFP/graphite is provided, examining both cost and electrochemical performance.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"8 9","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://chemistry-europe.onlinelibrary.wiley.com/doi/epdf/10.1002/batt.202500015","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144935532","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mg−O Bond Enables Fast Sodium-Ion Insertion/Extraction in Fe0.97Mg0.03PO4: Achieving Low Voltage Hysteresis and High-Capacity Cathodes Mg−O键实现Fe0.97Mg0.03PO4中钠离子的快速插入/提取:实现低电压滞后和高容量阴极
IF 4.7 4区 材料科学
Batteries & Supercaps Pub Date : 2025-02-25 DOI: 10.1002/batt.202500040
Mengting Deng, Yu Yuan, Yian Wang, Wenbin Fei, Zonglin Yang, Yichao Shi, Han Chen, Yulei Sui, Ling Wu
{"title":"Mg−O Bond Enables Fast Sodium-Ion Insertion/Extraction in Fe0.97Mg0.03PO4: Achieving Low Voltage Hysteresis and High-Capacity Cathodes","authors":"Mengting Deng,&nbsp;Yu Yuan,&nbsp;Yian Wang,&nbsp;Wenbin Fei,&nbsp;Zonglin Yang,&nbsp;Yichao Shi,&nbsp;Han Chen,&nbsp;Yulei Sui,&nbsp;Ling Wu","doi":"10.1002/batt.202500040","DOIUrl":"10.1002/batt.202500040","url":null,"abstract":"<p>Olivine-type FePO<sub>4</sub> garner significant research interest due to its remarkable sodium storage capacity of 177.70 mAh g<sup>−1</sup> and an appropriate discharge voltage of 2.8 V. However, existing synthesis methods often require complex processes or toxic raw materials, which hinder its further development. Additionally, significant voltage hysteresis, resulting from volume mismatches during phase transitions in the Na<sup>+</sup> insertion/extraction process, decreases discharge voltage and energy density. To overcome these issues, this study utilizes an environmentally friendly and cost-effective aqueous ion exchange method, incorporating a small amount of Mg<sup>2+</sup>. The volume effect caused by doping and the stabilizing effect of Mg−O bonds alleviate the voltage hysteresis phenomenon. Kinetic analysis reveals that Mg doping widens Na<sup>+</sup> transport channels, with Fe<sub>0.97</sub>Mg<sub>0.03</sub>PO<sub>4</sub>/C exhibiting the highest Na<sup>+</sup> diffusion. Furthermore, DFT analysis uncovers changes in the band gap and electrostatic field around the MO<sub>6</sub> octahedra, elucidating the improved conductivity and Na<sup>+</sup> kinetic. Fe<sub>0.97</sub>Mg<sub>0.03</sub>PO<sub>4</sub>/C demonstrates a satisfactory initial capacity (170.54 mAh g<sup>−1</sup> at 0.2 C) and excellent rate performance (80.60 mAh g<sup>−1</sup> at 5 C), maintaining a specific capacity of 86.39 mAh g<sup>−1</sup> after 300 cycles at a 2 C rate. This study approaches from a new direction and presents a novel strategy for advancing the synthesis and modification of high-performance FePO<sub>4</sub>/NaFePO<sub>4</sub>.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"8 9","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144935495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Polyacrylic Acid-Modified Gel Electrolytes for Enhanced Electrochemical Performance in Aqueous Zinc Batteries 提高水性锌电池电化学性能的聚丙烯酸改性凝胶电解质
IF 4.7 4区 材料科学
Batteries & Supercaps Pub Date : 2025-02-24 DOI: 10.1002/batt.202400776
Yuguo Zheng, Jiaxian Zheng, Prof. Hanfeng Liang
{"title":"Polyacrylic Acid-Modified Gel Electrolytes for Enhanced Electrochemical Performance in Aqueous Zinc Batteries","authors":"Yuguo Zheng,&nbsp;Jiaxian Zheng,&nbsp;Prof. Hanfeng Liang","doi":"10.1002/batt.202400776","DOIUrl":"10.1002/batt.202400776","url":null,"abstract":"<p>Gel electrolytes are widely used in aqueous zinc batteries to alleviate water-related issues. In this study, we develop a new gel electrolyte by introducing a small amount of polymer additive, inspired by electrolyte additives in liquid electrolytes. The introduction of polyacrylic acid (PAA) additive improves the ionic diffusion coefficient inside the gel electrolyte and enables uniform Zn deposition, enhancing the reversibility of Zn batteries. As a result, the Zn||Mg<sub>0.1</sub>V<sub>2</sub>O<sub>5</sub> batteries using the modified electrolyte show a maximum capacity of 300 mAh g<sup>−1</sup> at a current density of 0.5 A g<sup>−1</sup> and remain stable over 300 cycles. In contrast, the batteries without the PAA additive suffer from rapid capacity decay within 150 cycles under the same conditions. This study presents a simple and cost-effective method of gel electrolyte additive engineering to enhance the performance of aqueous zinc batteries.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"8 8","pages":""},"PeriodicalIF":4.7,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144809281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
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:604180095
Book学术官方微信