High‑Entropy Layered Oxide Cathode Enabling High‑Rate for Solid‑State Sodium‑Ion Batteries

查看全文 作　　者：Tianxun [1,3]Cai;Mingzhi [2]Cai;Jinxiao [1,3]Mu;Siwei [2]Zhao;Hui [1]Bi;Wei [1,4]Zhao;Wujie [1]Dong;Fuqiang [1,2,3]Huang

机构地区：[1]State Key Laboratory of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,People’s Republic of China;[2]State Key Laboratory of Rare Earth Materials Chemistry and Applications,College of Chemistry and Molecular Engineering,Peking University,Beijing 100871,People’s Republic of China;[3]Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,People’s Republic of China;[4]Zhongke Institute of Strategic Emerging Materials,Yixing 214213,Jiangsu,People’s Republic of China

出　　处：《Nano-Micro Letters》索引2024年第16卷第1期,共12页

基　　金：National Natural Science Foundation of China(52202327);Science and Technology Commission of Shanghai Municipality(22ZR1471300);National Science Foundation of China(Grant 51972326);Youth Innovation Promotion Association CAS,Foundation Strengthening Project;Program of Shanghai Academic Research Leader(Grant 22XD1424300). 摘　　要：Na-ion O3-type layered oxides are prospective cathodes for Na-ion batteries due to high energy density and low-cost.Nevertheless,such cathodes usually suffer from phase transitions,sluggish kinetics and air instability,making it difficult to achieve high performance solid-state sodium-ion batteries.Herein,the high-entropy design and Li doping strategy alleviate lattice stress and enhance ionic conductivity,achieving high-rate performance,air stability and electrochemically thermal stability for Na_(0.95)Li_(0.06)Ni_(0.25)Cu_(0.05)Fe_(0.15)Mn_(0.49)O_(2).This cathode delivers a high reversible capacity(141 mAh g^(−1)at 0.2C),excellent rate capability(111 mAh g^(−1)at 8C,85 mAh g^(−1)even at 20C),and long-term stability(over 85%capacity retention after 1000 cycles),which is attributed to a rapid and reversible O3–P3 phase transition in regions of low voltage and suppresses phase transition.Moreover,the compound remains unchanged over seven days and keeps thermal stability until 279℃.Remarkably,the polymer solid-state sodium battery assembled by this cathode provides a capacity of 92 mAh g^(−1)at 5C and keeps retention of 96%after 400 cycles.This strategy inspires more rational designs and could be applied to a series of O3 cathodes to improve the performance of solid-state Na-ion batteries. 关键词：High-entropy High-rate performance Li-TM interaction Air stability O3 layered oxide cathode

相关文献

参考文献（36）
引证文献（4）
耦合文献（0）

参考文献(36)

引证文献(4)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

High‑Entropy Layered Oxide Cathode Enabling High‑Rate for Solid‑State Sodium‑Ion Batteries

参考文献(36)

引证文献(4)

用户提示