电化学
离子
材料科学
纳米技术
扩散
钠
储能
密度泛函理论
电化学储能
电极
化学工程
计算机科学
化学物理
化学
物理
热力学
物理化学
计算化学
超级电容器
工程类
功率(物理)
冶金
有机化学
作者
Jian Peng,Bao Zhang,Weibo Hua,Yaru Liang,Wang Zhang,Yumeng Du,Germanas Peleckis,Sylvio Indris,Qinfen Gu,Zhenxiang Cheng,Jiazhao Wang,Huan Liu,Shi Xue Dou,Shulei Chou
标识
DOI:10.1002/anie.202215865
摘要
Sodium-ion batteries (SIBs) with fast-charge capability and long lifespan could be applied in various sustainable energy storage systems, from personal devices to grid storage. Inspired by the disordered Rubik's cube, here, we report that the high-entropy (HE) concept can lead to a very substantial improvement in the sodium storage properties of hexacyanoferrate (HCF). An example of HE-HCF has been synthesized as a proof of concept, which has achieved impressive cycling stability over 50 000 cycles and an outstanding fast-charging capability up to 75 C. Remarkable air stability and all-climate performance are observed. Its quasi-zero-strain reaction mechanism and high sodium diffusion coefficient have been measured and analyzed by multiple in situ techniques and density functional theory calculations. This strategy provides new insights into the development of advanced electrodes and provides the opportunity to tune electrochemical performance by tailoring the atomic composition.
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