{"title":"High-entropy chemistry enhanced pyrochlore (Y0.2La0.2Ce0.2Nd0.2Ca0.2)2Sn2O7 for high-performance lithium-ion battery anode","authors":"Yiming Tan, Luyao Zheng, Yurong Ren, Zhihui Chen","doi":"10.1007/s10008-024-06092-1","DOIUrl":null,"url":null,"abstract":"<div><p>High-Entropy Oxides (HEOs) are emerging as promising anode materials for lithium-ion batteries (LIBs) due to their stable crystal structure and high theoretical capacity. However, the limited understanding of their intrinsic crystal structure and lithium storage mechanism has hindered their further development and application. In this study, (Y<sub>0.2</sub>La<sub>0.2</sub>Ce<sub>0.2</sub>Nd<sub>0.2</sub>Ca<sub>0.2</sub>)<sub>2</sub>Sn<sub>2</sub>O<sub>7</sub> (M<sub>2</sub>Sn<sub>2</sub>O<sub>7</sub>) nanoparticles are successfully synthesized using a hydrothermal method and then applied as an advanced anode material for LIBs. The oxygen vacancies induced by high-entropy chemistry result in the M<sub>2</sub>Sn<sub>2</sub>O<sub>7</sub> HEO exhibiting excellent cycle stability, achieving high reversible capacities of 574.2 and 430.4 mA h g<sup>−1</sup> after 100 cycles at 0.1 A g<sup>−1</sup> for half and full-cell lithium-ion batteries, respectively. This research highlights the potential of HEOs with stable structures and excellent performance as promising candidates for LIB anode materials.</p></div>","PeriodicalId":665,"journal":{"name":"Journal of Solid State Electrochemistry","volume":"29 2","pages":"731 - 741"},"PeriodicalIF":2.6000,"publicationDate":"2024-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Solid State Electrochemistry","FirstCategoryId":"5","ListUrlMain":"https://link.springer.com/article/10.1007/s10008-024-06092-1","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ELECTROCHEMISTRY","Score":null,"Total":0}
引用次数: 0
Abstract
High-Entropy Oxides (HEOs) are emerging as promising anode materials for lithium-ion batteries (LIBs) due to their stable crystal structure and high theoretical capacity. However, the limited understanding of their intrinsic crystal structure and lithium storage mechanism has hindered their further development and application. In this study, (Y0.2La0.2Ce0.2Nd0.2Ca0.2)2Sn2O7 (M2Sn2O7) nanoparticles are successfully synthesized using a hydrothermal method and then applied as an advanced anode material for LIBs. The oxygen vacancies induced by high-entropy chemistry result in the M2Sn2O7 HEO exhibiting excellent cycle stability, achieving high reversible capacities of 574.2 and 430.4 mA h g−1 after 100 cycles at 0.1 A g−1 for half and full-cell lithium-ion batteries, respectively. This research highlights the potential of HEOs with stable structures and excellent performance as promising candidates for LIB anode materials.
高熵氧化物（HEOs）由于其稳定的晶体结构和较高的理论容量，成为锂离子电池（LIBs）极具发展前景的负极材料。然而，对其固有晶体结构和锂储存机理的了解有限，阻碍了其进一步的开发和应用。本研究采用水热法成功合成了（Y0.2La0.2Ce0.2Nd0.2Ca0.2）2Sn2O7 （M2Sn2O7）纳米颗粒，并将其作为锂离子电池的高级负极材料。高熵化学诱导的氧空位导致M2Sn2O7 HEO表现出优异的循环稳定性，在0.1 A g−1下循环100次后，半芯锂离子电池和满芯锂离子电池的可逆容量分别达到574.2和430.4 mA h g−1。该研究强调了具有稳定结构和优异性能的氢氧水作为锂离子电池阳极材料的潜力。
期刊介绍：
The Journal of Solid State Electrochemistry is devoted to all aspects of solid-state chemistry and solid-state physics in electrochemistry.
The Journal of Solid State Electrochemistry publishes papers on all aspects of electrochemistry of solid compounds, including experimental and theoretical, basic and applied work. It equally publishes papers on the thermodynamics and kinetics of electrochemical reactions if at least one actively participating phase is solid. Also of interest are articles on the transport of ions and electrons in solids whenever these processes are relevant to electrochemical reactions and on the use of solid-state electrochemical reactions in the analysis of solids and their surfaces.
The journal covers solid-state electrochemistry and focusses on the following fields: mechanisms of solid-state electrochemical reactions, semiconductor electrochemistry, electrochemical batteries, accumulators and fuel cells, electrochemical mineral leaching, galvanic metal plating, electrochemical potential memory devices, solid-state electrochemical sensors, ion and electron transport in solid materials and polymers, electrocatalysis, photoelectrochemistry, corrosion of solid materials, solid-state electroanalysis, electrochemical machining of materials, electrochromism and electrochromic devices, new electrochemical solid-state synthesis.
The Journal of Solid State Electrochemistry makes the professional in research and industry aware of this swift progress and its importance for future developments and success in the above-mentioned fields.
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