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Can Prussian Blue Analogues be Holy Grail for Advancing Post-Lithium Batteries? 普鲁士蓝类似物能否成为推动后锂电池发展的圣杯?
IF 5.1 4区 材料科学
Batteries & Supercaps Pub Date : 2024-07-07 DOI: 10.1002/batt.202400280
Mecaelah S. Palaganas, Jayson S. Garcia, Giancarlo Dominador D. Sanglay, Lora Monique E. Sapanta, Dr. Lawrence A. Limjuco, Prof. Joey D. Ocon
{"title":"Can Prussian Blue Analogues be Holy Grail for Advancing Post-Lithium Batteries?","authors":"Mecaelah S. Palaganas,&nbsp;Jayson S. Garcia,&nbsp;Giancarlo Dominador D. Sanglay,&nbsp;Lora Monique E. Sapanta,&nbsp;Dr. Lawrence A. Limjuco,&nbsp;Prof. Joey D. Ocon","doi":"10.1002/batt.202400280","DOIUrl":"10.1002/batt.202400280","url":null,"abstract":"<p>The recent classification of lithium as a critical raw material surged the research and development (R&amp;D) of post-lithium batteries (PLBs). The larger cation charge carriers of these PLBs consequently entailed extensive materials R&amp;D for battery components, especially cathode. Prussian Blue (PB) and its analogues (PBAs) have emerged as promising cathode materials for PLBs due to their desirable characteristics, including a three-dimensional open framework structure that facilitates fast ion diffusion for both monovalent (Li<sup>+</sup>, Na<sup>+</sup>, K<sup>+</sup>) and multivalent (Mg<sup>2+</sup>, Ca<sup>2+</sup>, Zn<sup>2+</sup>, Al<sup>3+</sup>) ions, stable framework structures, electrochemical tunability, availability of widely used precursors, and ease of synthesis. Our comprehensive review reveals that several challenges are yet to be addressed in employing PBAs as cathode materials for PLBs, <i>viz</i>., vacancies, crystal water, side reactions, and conductivity issues. This review paper provides an exhaustive survey of material development, including the mitigation strategies of the challenges in employing PBAs as cathode materials for advancing PLBs (i. e., sodium-ion batteries (SIBs), potassium-ion batteries (KIBs), magnesium-ion batteries (MIBs), calcium-ion batteries (CIBs), zinc-ion batteries (ZIBs), aluminum-ion batteries (AIBs)) towards commercialization.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"7 10","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141573831","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
Mitigating Dissolution to Enhance the Performance of Pillar[5]quinone in Sodium Batteries 减轻溶解以提高钠电池中柱状[5]醌的性能
IF 5.7 4区 材料科学
Batteries & Supercaps Pub Date : 2024-07-02 DOI: 10.1002/batt.202400312
Md Adil, Maximilian Schmidt, Julia Vogt, Thomas Diemant, Martin Oschatz, Birgit Esser
{"title":"Mitigating Dissolution to Enhance the Performance of Pillar[5]quinone in Sodium Batteries","authors":"Md Adil, Maximilian Schmidt, Julia Vogt, Thomas Diemant, Martin Oschatz, Birgit Esser","doi":"10.1002/batt.202400312","DOIUrl":"https://doi.org/10.1002/batt.202400312","url":null,"abstract":"Sodium‐ion batteries using organic electrode materials are a promising alternative to state‐of‐the‐art lithium‐ion batteries. However, their practical viability is hindered by challenges such as a low specific capacity of the organic electrode materials, or their dissolution in the electrolyte. We herein present a double mitigation strategy to enhance the performance of pillar[5]quinone (P5Q) as positive electrode in sodium batteries. Using 5 M sodium bis(fluorosulfonyl)imide in succinonitrile as highly concentrated electrolyte, and encapsulating P5Q in CMK‐3 (Carbon Mesostructured by KAIST with hexagonally ordered rod‐like carbon domains) as templated ordered mesoporous carbon, we achieve a record cycling performance with improved cycling stability even at elevated temperature (40 °C). The P5Q@CMK‐3 composite electrode delivers 430 mAh g−1 specific discharge capacity at 0.2C rate with 90% retention over 200 cycles. This corresponds to an energy density of 831 Wh kg−1 (based on P5Q mass) and surpasses previous reports on pillarquinones. When operated at 40 °C, the P5Q@CMK‐3 composite electrodes deliver a specific discharge capacity of 438 mAh g−1 with 88% capacity retention over 500 cycles (0.02% per cycle). This study underscores the crucial role the electrolyte plays in advancing organic sodium batteries, offering a promising avenue for the future of sustainable energy technologies.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"13 1","pages":""},"PeriodicalIF":5.7,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141526584","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
Controlling Structure and Morphology of MoS2 via Sulfur Precursor for Optimized Pseudocapacitive Lithium Intercalation Hosts 通过硫前驱体控制 MoS2 的结构和形态以优化伪电容性锂插层宿主
IF 5.1 4区 材料科学
Batteries & Supercaps Pub Date : 2024-07-02 DOI: 10.1002/batt.202400277
Maciej Tobis, Mennatalla Elmanzalawy, Jaehoon Choi, Elżbieta Frąckowiak, Simon Fleischmann
{"title":"Controlling Structure and Morphology of MoS2 via Sulfur Precursor for Optimized Pseudocapacitive Lithium Intercalation Hosts","authors":"Maciej Tobis,&nbsp;Mennatalla Elmanzalawy,&nbsp;Jaehoon Choi,&nbsp;Elżbieta Frąckowiak,&nbsp;Simon Fleischmann","doi":"10.1002/batt.202400277","DOIUrl":"10.1002/batt.202400277","url":null,"abstract":"<p>Molybdenum disulfide (MoS<sub>2</sub>)-based electrode materials can exhibit a pseudocapacitive charge storage mechanism induced by nanosized dimension of the crystalline domains, which is why control over material structure via synthesis conditions is of significance. In this study, we investigate how the use of different sulfide precursors, specifically thiourea (TU), thioacetamide (TAA), and L-cysteine (LC), during the hydrothermal synthesis of MoS<sub>2</sub>, affects its physicochemical, and consequently, electrochemical properties. The three materials obtained exhibit distinct morphologies, ranging from micron-sized architectures (MoS<sub>2</sub> TU), to nanosized flakes (MoS<sub>2</sub> TAA and LC). While all three synthesized samples exhibit pseudocapacitive Li<sup>+</sup> intercalation properties, the capacity retention of the latter two consisting of nanosized flakes is further improved at high cycling rates. The individual charge storage properties are analyzed by operando X-ray diffraction, dilatometry, and 3D Bode analysis, revealing a correlation between the morphology, porosity, and the electrochemical intercalation behavior of the obtained electrode materials. The results demonstrate a facile strategy to control MoS<sub>2</sub> structure and related functionality by choice of hydrothermal synthesis precursors.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"7 11","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/batt.202400277","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141526682","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
Ion‐Pairing: A Bygone Treatment of Electrolyte Solutions? 离子配对:电解质溶液的过时处理方法?
IF 5.7 4区 材料科学
Batteries & Supercaps Pub Date : 2024-06-28 DOI: 10.1002/batt.202400160
Lars Olow Simon Colbin, Yunqi Shao, Reza Younesi
{"title":"Ion‐Pairing: A Bygone Treatment of Electrolyte Solutions?","authors":"Lars Olow Simon Colbin, Yunqi Shao, Reza Younesi","doi":"10.1002/batt.202400160","DOIUrl":"https://doi.org/10.1002/batt.202400160","url":null,"abstract":"The field of battery research has advanced significantly in the past 50 years. Despite the importance of electrolyte solutions for these devices, the battery community's perception of this essential component arguably aligns more with the 19<jats:sup>th</jats:sup> century reasoning than the 20<jats:sup>th</jats:sup> centuries advancements. This paper traces the historical evolution of electrolyte theories, emphasizing the consequences of an overly ion‐pairing‐centric view, and the benefits of a more nuanced analysis. A quantitative example is provided. It will be shown that an association constant of can be obtained from conductivity measurements of sodium acetate in water. However, studying the activity coefficients of this electrolyte reveals that this association constant would result in an unreasonable scenario where the free ions behave as uncharged particles at low concentrations. The aim is to promote a nuanced perspective on electrolyte solutions within the battery community, while also providing a collection of reputable references for the interested readers further studies.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"23 1","pages":""},"PeriodicalIF":5.7,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141505905","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
Enhancing Voltage Output in Polyanion‐Type Cathode Materials for Sodium Ion Batteries 提高钠离子电池多阴离子型阴极材料的电压输出
IF 5.7 4区 材料科学
Batteries & Supercaps Pub Date : 2024-06-28 DOI: 10.1002/batt.202400290
Xiaodong Wu, Aifang Liu, Suwan Lu
{"title":"Enhancing Voltage Output in Polyanion‐Type Cathode Materials for Sodium Ion Batteries","authors":"Xiaodong Wu, Aifang Liu, Suwan Lu","doi":"10.1002/batt.202400290","DOIUrl":"https://doi.org/10.1002/batt.202400290","url":null,"abstract":"Sodium‐ion batteries (SIBs) are promising in several aspects due to their many advantages over lithium‐ion batteries. Among SIB’s several outstanding attributes, its low cost, resource abundance, and potential safety make it suitable for large‐scale energy storage systems (ESS). Among the potential cathode materials, poly‐anionic cathode materials could be a better choice for their stability and safety in comparison to layered transition metal oxides and Prussian blue analogues (PBA). However, on the other hand, the conductivity as well as the available capacity of the polyanion compounds are still poor, which limits their applications; moreover, some polyanion cathode operate at low voltage, which reduces the energy density and raises the cost of the battery system. We here try to summarize the recent progress of polyanion compounds as cathode materials for SIB. These compounds are categorized based on the metal redox couple, including V‐, Cr‐, Mn‐, Fe‐, Co‐, and Ni‐polyanion compounds. Our attention is specifically drawn to properties such as reversible redox voltage, capacity, cycling stability, and sodium storage mechanisms. We also discuss the challenges and potential development strategies for the future.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"44 1","pages":""},"PeriodicalIF":5.7,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141505909","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
Olivine NaMn0.66Fe0.34PO4 as a Cathode Material for Advanced Sodium Ion Batteries 作为先进钠离子电池阴极材料的橄榄石 NaMn0.66Fe0.34PO4
IF 5.1 4区 材料科学
Batteries & Supercaps Pub Date : 2024-06-28 DOI: 10.1002/batt.202400214
Tassadit Ouaneche, Lorenzo Stievano, Laure Monconduit, Claude Guéry, Moulay Tahar Sougrati, Nadir Recham
{"title":"Olivine NaMn0.66Fe0.34PO4 as a Cathode Material for Advanced Sodium Ion Batteries","authors":"Tassadit Ouaneche,&nbsp;Lorenzo Stievano,&nbsp;Laure Monconduit,&nbsp;Claude Guéry,&nbsp;Moulay Tahar Sougrati,&nbsp;Nadir Recham","doi":"10.1002/batt.202400214","DOIUrl":"10.1002/batt.202400214","url":null,"abstract":"<p>Sodium-ion batteries continue to rise in the energy storage landscape, their increasing adoption being driven by factors such as cost-effectiveness and sustainability. As a consequence, there is a growing emphasis on the development of new electrode materials. Among these, olivine phosphates emerge as a promising family of cathode materials. However, viable synthesis routes are still lacking. In this study, cathode materials of olivine NaMn<sub>1-x</sub>Fe<sub>x</sub>PO<sub>4</sub> (x=0.34 and 1) were prepared by directly sodiating Mn<sub>1-x</sub>Fe<sub>x</sub>PO<sub>4</sub> through a solid-state process at 300 °C. X-ray diffraction, Mössbauer spectroscopy and electrochemical measurements were employed to study their structural and electrochemical features. NaMn<sub>0.66</sub>Fe<sub>0.34</sub>PO<sub>4</sub> exhibits two pseudo-plateaus profile with an average potential of ~3.2 V vs. Na<sup>+</sup>/Na<sup>0</sup> with a reversible capacity reaching 75 mAh/g at C/20 via a monophasic (de)intercalation mechanism. In parallel, the intermediate composition Na<sub>0.5</sub>Mn<sub>0.66</sub>Fe<sub>0.34</sub>PO<sub>4</sub> could be prepared via the solid-state reaction of NaMn<sub>0.66</sub>Fe<sub>0.34</sub>PO<sub>4</sub> and Mn<sub>0.66</sub>Fe<sub>0.34</sub>PO<sub>4</sub>. Such a solvent-free sodiation process not only provides a simplified preparation of NMFP, but also offers easy scalability compared to the more laborious electrochemical sodiation route, making it an interesting prospect for future industrialization. Finally, this research confirms that the olivine NMFP is indeed an attractive candidate as a cathode material for SIBs.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"7 10","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/batt.202400214","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141526683","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
Highly Effective Electrolytes toward High‐Performance Aluminum/Seawater Batteries 实现高性能铝/海水电池的高效电解质
IF 5.7 4区 材料科学
Batteries & Supercaps Pub Date : 2024-06-27 DOI: 10.1002/batt.202400307
Qingchao Xia, Zhengnan Li, Dewei Liu, Nan Song, Nan Zhang, Shuyang Ma, Zeliang Wu, Weiyong Yuan
{"title":"Highly Effective Electrolytes toward High‐Performance Aluminum/Seawater Batteries","authors":"Qingchao Xia, Zhengnan Li, Dewei Liu, Nan Song, Nan Zhang, Shuyang Ma, Zeliang Wu, Weiyong Yuan","doi":"10.1002/batt.202400307","DOIUrl":"https://doi.org/10.1002/batt.202400307","url":null,"abstract":"The poor performance of metal/water batteries caused by self‐corrosion of anodes and low catalytic activity of cathodes has been a long‐standing challenge, greatly limiting their practical applications, in particular the underwater unmanned vehicle (UUV) application. We have fabricated an Al/seawater battery using simulated seawater with an appropriate pH and added with polyacrylic acid (PAA) as the electrolyte. This electrolyte simultaneously greatly retards self‐corrosion of the Al anode by in situ forming a PAA‐Al3+ complex film on it and increases the electrocatalytic activity toward the hydrogen evolution reaction by improving the electronic structure of Pt. When utilizing the multielement‐doped Al sheet as the anode and nickel foam supported loading‐amount‐optimized Pt/C catalyst as the cathode and adopting the developed new electrolyte, the obtained Al/H2O battery exhibits an energy density of 2271 Wh kg‐1, which is the highest among those of all the reported batteries, and a power density of 20.87 mW cm‐2, which outperforms all the reported metal/H2O batteries. This work not only develops a new type of high‐performance Al/H2O batteries for practical applications such as UUVs, but provides scientific insight into the design of superior electrolytes, which could be further extended for improving the performances of various metal batteries.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"142 1","pages":""},"PeriodicalIF":5.7,"publicationDate":"2024-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141526684","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
New Insights Into Zinc Passivation Through In‐Operando Measured Zincate Concentrations 通过现场测量锌酸盐浓度了解锌钝化的新见解
IF 5.7 4区 材料科学
Batteries & Supercaps Pub Date : 2024-06-25 DOI: 10.1002/batt.202400298
David Fuchs, Harry Hoster, Christoph Müller, Mandy Schaffeld, Falko Mahlendorf
{"title":"New Insights Into Zinc Passivation Through In‐Operando Measured Zincate Concentrations","authors":"David Fuchs, Harry Hoster, Christoph Müller, Mandy Schaffeld, Falko Mahlendorf","doi":"10.1002/batt.202400298","DOIUrl":"https://doi.org/10.1002/batt.202400298","url":null,"abstract":"We present a detailed analysis of the behavior of a new zinc‐air flow cell. This system offers several unique insights into the zinc electrochemistry. Due to the constant slurry flow, concentration gradients are completely destroyed every few seconds and therefore negligible and it is possible to take samples from the anode without interrupting the discharge process. To clarify the underlying processes, the potential of the zinc electrode, the zincate concentration (by titration) and the zinc‐particles (by SEM) were analyzed. These measurements offer the unique opportunity to distinguish between thermodynamic and kinetic contributions to the cell voltage. We found, that in this system zinc passivation, is caused by a critical zincate concentration and the steep increase of the cell potential is a kinetic effect, caused by partial passivation. The key factor for passivation, which limits the capacity to 82 mAh gzinc‑1 or 41 mAh gslurry‑1, is the nucleation of ZnO before the critical zincate concentration is reached. This allows capacities of up to 420 mAh gzinc‑1 or 210 mAh gslurry‑1. These results are therefore not only essential for a further increase of the practical capacity of the system but also offer unique insights in the zinc electrochemistry.","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"15 1","pages":""},"PeriodicalIF":5.7,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141505906","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
Investigation of an Industrially Scalable Production of Sulfur-Polyacrylonitrile Based Cathodes 基于硫-聚丙烯腈的阴极工业化规模生产研究
IF 5.1 4区 材料科学
Batteries & Supercaps Pub Date : 2024-06-21 DOI: 10.1002/batt.202400154
Robin Moschner, Heather Cavers, Peter Michalowski, Arno Kwade
{"title":"Investigation of an Industrially Scalable Production of Sulfur-Polyacrylonitrile Based Cathodes","authors":"Robin Moschner,&nbsp;Heather Cavers,&nbsp;Peter Michalowski,&nbsp;Arno Kwade","doi":"10.1002/batt.202400154","DOIUrl":"10.1002/batt.202400154","url":null,"abstract":"<p>Sulfur-polyacrylonitrile (SPAN) is a sulfur-based active material for next-generation lithium-sulfur battery cathodes. Due to the covalent bonding between sulfur chains and the polymeric backbone, the shuttle effect degrading classical sulfur-based cathodes can be suppressed while also achieving a high active material content in the cathode. In this paper, we investigate the processability of an industrially scalable SPAN active material with 38 wt.-% of sulfur in a water-based and scalable process route. The potential of the SPAN material for industrial adoption and the impact of the process route on the cell performance are discussed. We show that when processed correctly, the SPAN material delivers exceptional cycling stability and good C-rate performance with ether-based electrolytes. However, the performance of the SPAN cathode is influenced by the mixing characteristic. Using higher mixing intensities during the slurry preparation leads to deterioration of the electrochemical performance. This can be attributed to a decreasing carbon black percolation with increasing tip speed in combination with the kinetic limitation of sulfur cathodes during Li<sub>2</sub>S<sub>2</sub> and Li<sub>2</sub>S oxidation.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"7 9","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/batt.202400154","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141505907","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
Elucidation of the Reaction Mechanisms in Antifluorite-Type Li5+xFe1-xCoxO4 Positive Electrodes for Li-Ion Batteries 阐明用于锂离子电池的反萤石型 Li5+xFe1-xCoxO4 正极的反应机制
IF 5.1 4区 材料科学
Batteries & Supercaps Pub Date : 2024-06-20 DOI: 10.1002/batt.202400348
Rasmus Vester Thøgersen, Halvor Høen Hval, Helmer Fjellvåg
{"title":"Elucidation of the Reaction Mechanisms in Antifluorite-Type Li5+xFe1-xCoxO4 Positive Electrodes for Li-Ion Batteries","authors":"Rasmus Vester Thøgersen,&nbsp;Halvor Høen Hval,&nbsp;Helmer Fjellvåg","doi":"10.1002/batt.202400348","DOIUrl":"10.1002/batt.202400348","url":null,"abstract":"<p>The Li-rich antifluorite-type oxides Li<sub>5</sub>FeO<sub>4</sub>, Li<sub>5.5</sub>Fe<sub>0.5</sub>Co<sub>0.5</sub>O<sub>4</sub> and Li<sub>6</sub>CoO<sub>4</sub> have been investigated as positive electrode materials for Li-ion batteries in a combined <i>operando</i> XANES and XRD experiment. All materials show a similar two-step behaviour upon initial charge (termed Stage I and Stage II), and reversibility of subsequent cycling depends upon whether the initial charge cycle is terminated following Stage I or allowed to proceed through Stage II. By tracking the energetic evolution of the XANES pre-edge feature present in both Fe and Co K-edge spectra, as well as the evolution of X-ray diffractograms during charge and discharge, we correlate the changes in chemical coordination and oxidation states in both species and the structural changes to the electrochemical potential profile, and infer the role of anionic redox processes.</p>","PeriodicalId":132,"journal":{"name":"Batteries & Supercaps","volume":"7 9","pages":""},"PeriodicalIF":5.1,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/batt.202400348","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141526686","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
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