期刊
JOURNAL OF ENERGY CHEMISTRY
卷 66, 期 -, 页码 237-249出版社
ELSEVIER
DOI: 10.1016/j.jechem.2021.08.020
关键词
Zn-ion battery; Quasi-solid electrolyte; Nanocone; Doping; Wearable electronic
资金
- National Natural Science Foundation of China [61176108, 61774060]
- Science and Technology Commission of Shanghai Municipality [18DZ2270800]
- City University of Hong Kong Strategic Research Grant (SRG) [7005505]
- Scientific Research Foundation for the Returned Overseas Chinese Scholars of State Education Ministry [-1098]
A highly active cobalt-doped Ni3S2 porous nanocone framework designed as a zinc-ion battery electrode demonstrates excellent battery performance and cycling stability, along with high energy density. The results not only provide new insights into cathode materials design for zinc-based batteries, but also suggest their commercial potential in portable and wearable electronics.
Flexible quasi-solid zinc-ion batteries (ZIBs) have large potential in power applications due to the low price, wearable nature, safety, and high capacity. However, the use of transition metal sulfide cathodes in ZIBs has not been studied extensively and the underlying mechanism and theoretical basis of this type of batteries are not well understood. Herein, a highly active cobalt-doped Ni3S2 porous nanocone framework (C12NS) is designed and demonstrated as a zinc-ion battery electrode. First-principles calculation and experiments reveal that the cobalt dopant improves the battery properties greatly. The assembled flexible zinc-ion battery exhibits a high specific capacity of 453.3 mAh g(-1) at a current density of 0.4 A g(-1) in as well as excellent cycling stability as manifested by a capacity retention ratio of 89.5% at a current density of 4 A g(-1) after 5000 cycles. The peak energy density of 553.9 Wh kg(-1) is also superior to those of most recently reported NiCo-based zinc-ion batteries. More importantly, the flexible battery can be operated under severe mechanical bending and even continues to work after physical puncturing without showing leakage. These exciting results not only reveal a novel design of cathode materials for zinc-based batteries, but also suggest their immense commercial potential in portable and wearable electronics. (C) 2021 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据