Pressure-Stabilized High-Entropy (FeCoNiCuRu)S2 Sulfide Anode toward Simultaneously Fast and Durable Lithium/Sodium Ion Storage

被引：25

作者：

Cheng, Wenbo ^{[1
]}

Liu, Jie ^{[1
]}

Hu, Jun ^{[1
]}

Peng, Wenfeng ^{[1
]}

Niu, Guoliang ^{[1
,2
]}

Li, Junkai ^{[1
]}

Cheng, Yong ^{[3
]}

Feng, Xiaolei ^{[4
]}

Fang, Leiming ^{[2
]}

Wang, Ming-Sheng ^{[3
]}

Redfern, Simon A. T. ^{[4
,5
]}

Tang, Mingxue ^{[1
]}

Wang, Gongkai ^{[6
]}

Gou, Huiyang ^{[1
]}

机构：

[1] Ctr High Pressure Sci & Technol Adv Res, Beijing 100193, Peoples R China

[2] China Acad Engn Phys, Inst Nucl Phys & Chem, Key Lab Neutron Phys, Mianyang 621999, Sichuan, Peoples R China

[3] Xiamen Univ, Coll Mat, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Fujian, Peoples R China

[4] Nanyang Technol Univ, Sch Mat Sci & Engn, 50 Nanyang Ave, Singapore 639798, Singapore

[5] Nanyang Technol Univ, Asian Sch Environm, 50 Nanyang Ave, Singapore 639798, Singapore

[6] Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin Key Lab Mat Laminating Fabricat & Interfac, Tianjin 300130, Peoples R China

来源：

SMALL | 2023年 / 19卷 / 29期

基金：

国家重点研发计划; 中国国家自然科学基金;

关键词：

entropy stabilization effect; high-entropy sulfide anodes; lithium; sodium ion storage; ENERGY; CARBON; NANOPARTICLES; SCATTERING; OXIDES; LAYER;

D O I：

10.1002/smll.202301915

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Pressure-stabilized high-entropy sulfide (FeCoNiCuRu)S-2 (HES) is proposed as an anode material for fast and long-term stable lithium/sodium storage performance (over 85% retention after 15 000 cycles @10 A g(-1)). Its superior electrochemical performance is strongly related to the increased electrical conductivity and slow diffusion characteristics of entropy-stabilized HES. The reversible conversion reaction mechanism, investigated by ex-situ XRD, XPS, TEM, and NMR, further confirms the stability of the host matrix of HES after the completion of the whole conversion process. A practical demonstration of assembled lithium/sodium capacitors also confirms the high energy/power density and long-term stability (retention of 92% over 15 000 cycles @5 A g(-1)) of this material. The findings point to a feasible high-pressure route to realize new high-entropy materials for optimized energy storage performance.

引用

页数：12

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