Luo Zeshunji, Lin Xiaoxia, Tang Licheng, Feng Yong, Gui Yufan, Zhu Jiajun, Yang Wulin, Li Deyi, Zhou Lingping, Fu Licai
College of Material Science and Engineering, Hunan University, Changsha 410082, China.
State Key Laboratory of Advanced Chemical Power Sources, Guizhou Meiling Power Sources Company Ltd., Zunyi 563003, China.
ACS Appl Mater Interfaces. 2020 Aug 5;12(31):34755-34762. doi: 10.1021/acsami.0c05751. Epub 2020 Jul 24.
Two-dimensional (2D) nanomaterials possessing a unique sheet structure, compared to correlative bulk materials, exhibit excellent properties, especially in the energy storage and energy conversion field. In this case, NiCl nanosheets with thicknesses of 2-8 nm are first prepared by a simple chemical vapor deposition method. For the Li-B/LiF-LiCl-LiBr/NiCl thermal battery, the specific energy of NiCl nanosheets increases from 510 W h kg (NiCl rods) to 616 W h kg at an operation temperature of 500 °C and a current density of 0.2 A cm. The 2D morphology and large numbers of defects not only improve the redox reaction rates and the lithium storage capacity, but also enhance the adsorption capacity with the flake-like binder MgO, which prolong the discharge time by suppressing the discharge product diffusion to the electrolyte. These results indicate that NiCl nanosheets have a great possibility to become a desirable candidate of cathode materials for assisting in the development of high energy output and provide a new way to restrain the immersion between the electrode and electrolyte.
