Boosting reversible anionic redox reaction with Li/Cu dual honeycomb centers
作者机构：Key Laboratory for Renewable EnergyBeijing Key Laboratory for New Energy Materials and DevicesLaboratory for Advanced Materials&Electron MicroscopyBeijing National Laboratory for Condensed Matter PhysicsInstitute of PhysicsChinese Academy of SciencesBeijing 100190China Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of SciencesBeijing 100190China Yangtze River Delta Physics Research Center Co.LtdLiyang 213300China Huairou DivisionInstitute of PhysicsChinese Academy of SciencesBeijing 101400China Spallation Neutron Source Science CenterDongguan 523803China Institute of High Energy PhysicsChinese Academy of SciencesBeijing 100049China Institute of Advanced Science FacilitiesShenzhenGuangdong 518107PR China
出 版 物：《eScience》 (电化学与能源科学（英文）)
年 卷 期：2023年第3卷第5期
页 面：93-104页
学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学]
基 金：supported by the National Natural Science Foundation(NSFC)of China(52002394) Young Elite Scientists Sponsorship Program by CAST(2022QNRC001) Youth Innovation Promotion Association of the Chinese Academy of Sciences(2020006)
主 题：Anionic redox reaction Layered-oxide cathode Honeycomb Na-ion batteries
摘 要：The anionic redox reaction(ARR)is a promising charge contributor to improve the reversible capacity of layeredoxide cathodes for Na-ion batteries;however,some practical bottlenecks still need to be eliminated,including a low capacity retention,large voltage hysteresis,and low rate ***,we proposed a high-Na content honeycomb-ordered cathode,P2–Na_(5/6)[Li_(1/6)Cu_(1/6)Mn_(2/3)]O_(2)(P2-NLCMO),with combined cationic/anionic *** powder diffraction and X-ray diffraction of P2-NLCMO suggested P2-type stacking with rarely found P6322 *** addition,advanced spectroscopy techniques and density functional theory calculations confirmed the synergistic stabilizing relationship between the Li/Cu dual honeycomb centers,achieving fully active Cu^(3+)/Cu^(2+) redox and stabilized ARR with interactively suppressed local *** a meticulously regulated charge/discharge protocol,both the cycling and rate capability of P2-NLCMO were significantly.
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