Hierarchical Mesoporous Lithium-Rich Li[Li0.2Ni0.2Mn0.6]O2 Cathode Material Synthesized via Ice Templating for Lithium-Ion Battery

被引：89

作者：

Li, Yu ^{[1
]}

Wu, Chuan ^{[1
,2
]}

Bai, Ying ^{[1
]}

Liu, Lu ^{[1
]}

Wang, Hui ^{[1
]}

Wu, Feng ^{[1
,2
]}

Zhang, Na ^{[3
]}

Zou, Yufeng ^{[3
]}

机构：

[1] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing Key Lab Environm Sci & Engn, Beijing 100081, Peoples R China

[2] Collaborat Innovat Ctr Elect Vehicles Beijing, Beijing 100081, Peoples R China

[3] Tianjin Lishen Battery Joint Stock Co Ltd, EV HEV R&D Dept, Tianjin 300384, Peoples R China

来源：

ACS APPLIED MATERIALS & INTERFACES | 2016年 / 8卷 / 29期

关键词：

ice templating; micro/nano hierarchical; mesoporous; Li-rich cathode; lithium-ion battery; ELECTROCHEMICAL PROPERTIES; HIGH-CAPACITY; LIMO2; M; ELECTRODES; MN; PERFORMANCE; NI; CO; LI1.2NI0.2MN0.6O2; STORAGE;

D O I：

10.1021/acsami.6b04687

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Tuning hierarchical micro/nanostructure of electrode materials is a sought-after means to reinforce their electrochemical performance in the energy storage field. Herein, we introduce a type of hierarchical mesoporous Li[Li0.2Ni0.2Mn0.6]O-2 microsphere composed of nanoparticles synthesized via an ice templating combined coprecipitation strategy. It is a low-cost, eco-friendly, and easily operated method using ice as a template to control material with homogeneous morphology and rich porous channels. The as-prepared material exhibits remarkably enhanced electrochemical performances with higher capacity, more excellent cycling stability and more superior rate property, compared with the sample prepared by conventional coprecipitation method. It has satisfactory initial discharge capacities of 280.1 mAh g(-1) at 0.1 C, 207.1 mAh g(-1) at 2 C, and 152.4 mAh g(-1) at 5 C, as well as good cycle performance. The enhanced electrochemical performance can be ascribed to the stable hierarchical microsized structure and the improved lithium-ion diffusion kinetics from the highly porous structure.

引用

页码：18832 / 18840

页数：9

共 40 条

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