Flexible NiS2 film as high specific capacity cathode for thermal battery

•The NiS2 film prepared by tape-casting method possesses comparable ductility.•An ultrahigh specific capacity can be achieved for NiS2 film cathode.•Thin film process can effectively mitigate the polarization of NiS2 cathode. [Display omitted] Powders press technique is considered as a universal mea...

Full description

Saved in:
Bibliographic Details
Published in:Journal of alloys and compounds 2022-04, Vol.900, p.163448, Article 163448
Main Authors: Bin Yao, Fu, Licai, Liao, Zheng, Zhu, Jiajun, Yang, Wulin, Li, Deyi, Zhou, Lingping
Format: Article
Language:English
Subjects:
Cathodes
Flexible cathode
Heat treatment
High specific capacity
High temperature
Lithium
NiS2 film
Tablets
Tape casting
Thermal batteries
Thermal battery
Thickness
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:•The NiS2 film prepared by tape-casting method possesses comparable ductility.•An ultrahigh specific capacity can be achieved for NiS2 film cathode.•Thin film process can effectively mitigate the polarization of NiS2 cathode. [Display omitted] Powders press technique is considered as a universal means for preparing cathode of thermal battery. In this work, the flexible NiS2 film cathode with thickness of 120 µm was prepared by tape-casting method. It overcame the issue of organic adhesive failure at high temperature. The NiS2 film retains comparable ductility after heat treatment at 350 °C. And no crack occurs on the surface of the film after 100 times bending. Its density is similar to NiS2 tablets. Assembled in a single thermal battery, an ultrahigh specific capacity of 648 mA h g−1 at 250 mA cm−2 can be achieved with cut-off voltage of 1.5 V. Due to its short lithium ionic transmission distance, the specific capacity increases 13% compared with NiS2 tablets. This work affords a reference significance for the research on full-component flexible thermal battery.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2021.163448