Enhanced cycle performance of a Na/NiCl2 battery based on Ni particles encapsulated with Ni3S2 layer

被引：36
|
作者：
Ao, Xin [1 ,2 ]
Wen, Zhaoyin [1 ,2 ]
Hu, Yingying [1 ]
Wu, Tian [1 ,2 ]
Wu, Xiangwei [1 ]
He, Qiming [1 ,2 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Ceram, CAS Key Lab Mat Energy Convers, 1295 DingXi Rd, Shanghai 200050, Peoples R China
[2] Univ Chinese Acad Sci, 19 A Yuquan Rd, Beijing 100049, Peoples R China
来源：
JOURNAL OF POWER SOURCES | 2017年 / 340卷
基金：
中国国家自然科学基金;
关键词：
Ni3S2 surface layer; Sodium-nickel chloride battery; Zebra battery; Ni particle growth; Cell cycling behavior; ZEBRA BATTERY; HIGH-TEMPERATURE; NICKEL; CELL; DEGRADATION; CHALLENGES; ELECTRODES; BETA;
D O I：
10.1016/j.jpowsour.2016.11.091
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Nickel particles with different contents of Ni3S2 surface layer were prepared for their application as cathode materials in Na/NiCl2 batteries. The surface modification of nickel particles is found to prevent their growth and battery degradation during cycling. The optimum level of surface modification was determined by electrochemical tests and morphology characterization. Excessive Ni3S2 layer seems to cause particle aggregation resulting in low reversible capacity. The capacity of the cell with optimum level of Ni3S2 surface modification layer after 50 cycles is about 4 times greater than that without Ni3S2 surface modification layer. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：411 / 418
页数：8
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