Pseudocapacitance-Enhanced High-Rate Lithium Storage in "Honeycomb"-like Mn2O3 Anodes

被引：23
|
作者：
Yuan, Tianzhi [1 ,2 ]
Jiang, Yinzhu [1 ,2 ,3 ]
Wang, Qiuting [4 ]
Pan, Bin [1 ,2 ]
Yan, Mi [1 ,2 ]
机构：
[1] Zhejiang Univ, State Key Lab Silicon Mat, Key Lab Novel Mat Informat Technol Zhejiang Prov, Hangzhou 310027, Zhejiang, Peoples R China
[2] Zhejiang Univ, Sch Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China
[3] Chinese Acad Sci, Inst Res Struct Matter, State Key Lab Struct Chem, Fuzhou 350002, Fujian, Peoples R China
[4] Zhejiang Univ City Coll, Dept Informat, Hangzhou 310015, Zhejiang, Peoples R China
来源：
CHEMELECTROCHEM | 2017年 / 4卷 / 03期
基金：
浙江省自然科学基金; 中国国家自然科学基金;
关键词：
anode; high-rate capability; lithium storage; Mn2O3; pseudocapacitance; ELECTROSTATIC SPRAY DEPOSITION; HIGH-PERFORMANCE; ION BATTERIES; ELECTROCHEMICAL PERFORMANCE; THIN-FILMS; COMPOSITE; CAPACITY; NANOSTRUCTURES; NANOCOMPOSITES; NANOPARTICLES;
D O I：
10.1002/celc.201600588
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The realization of high-power lithium-ion batteries (LIBs) is heavily hampered by intrinsically slow lithium diffusion within solid electrodes. Capacitive-like lithium storage behavior observed in transition-metal oxide (TMO)-based anodes shed light on attaining battery-like capacity and supercapacitor-like rate performance simultaneously. Herein, honeycomb-like Mn2O3 films were successfully demonstrated as anodes for LIBs, in which the pseudocapacitive effect is strengthened upon cycling, resulting in a high-rate lithium storage capability. Such pseudocapacitance originates from the unique porous structure and cycle-induced microstructure evolution. The reticular Mn2O3 can reach 1584.9 mAhg(-1) over 250 cycles at 1Ag(-1), 1564.9mAhg(-1) after 500 cycles at 5A(-1), and 475.6mAhg(-1) at 15Ag(-1).
引用
收藏
页码：565 / 569
页数：5
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