Open AccessNiCl2 Cathode with the High Load Capacity for High Specific Power Thermal Battery
Author(s) -
Xiaoxia Lin,
Licai Fu,
Jiajun Zhu,
Wulin Yang,
Deyi Li,
Lei Zhou
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/677/3/032046
Subject(s) - cathode , electrolyte , battery (electricity) , materials science , thermal , current (fluid) , dissolution , nuclear engineering , power (physics) , electrical engineering , chemistry , chemical engineering , engineering , thermodynamics , electrode , physics
The advanced thermal batteries with CoS 2 cathode are applied to provide high energy, delivering lower specific power, because it is not suitable for high current discharge. NiCl 2 , possessing a high potential and large current discharge capacity, is considered as one of the cathode candidates for high power thermal battery. LiB/NiCl 2 couple outputs effectively specific power of ∼17.3kWkg −1 in this work at 500°C and 0.5Acm −2 (8Ag −1 ). However, NiCl 2 has highly dissolution in LiF-LiCl-LiBr electrolyte (widely used in thermal batteries), resulting in the capacity loss and severe safety problem. Here, cross-sections between NiCl 2 cathode and LiF-LiCl-LiBr electrolyte have been characterised by SEM after discharge at 500°C, and 0.5Acm −2- discharged interface exhibits blurrier boundary than that of 0.2Acm −2 -discharged.