Carbon coated CoS 2 thermal battery electrode material with enhanced discharge performances and air stability

One‐Step Hydrothermal Synthesis of Carbon‐Coated Nickel–Copper Sulfide Nanoparticles for High‐Performance Asymmetric Supercapacitors

“…It can be seen that there are many 50–100 nm pores between the nanoparticles, and the dispersion between the particles is good, making the material is easily contacted with the electrolyte, so that a sufficient redox reaction occurs. The difference in the morphology of C@Ni 0.9 Cu 0.1 ‐S and Ni 0.9 Cu 0.1 ‐S can be attributed to the in situ adsorption and carbonization of glucose . Figure d is a SAED diagram of the C@Ni 0.9 Cu 0.1 ‐S illustrating the material being a polycrystalline crystal and is consistent with the subsequent XRD test results.…”

Suppressing self-discharge of Li–B/CoS2 thermal batteries by using a carbon-coated CoS2 cathode

“…20,21 For researches of thermal batteries that anode is Li-Si alloy, carbon coating to CoS 2 cathode was reported by Xie to promote electrochemical properties by enhancing the electronic conductivity. 22 In this paper, considering the higher self-discharge rate at Li-B/CoS 2 system, the carbon coating of CoS 2 is mainly aimed to block dissolved lithium atom react with CoS 2 cathode. Based on above hypothesis, we reported a facile method through pyrolysis reaction of sucrose, to modify CoS 2 with amorphous carbon coating (this composite of carbon and CoS 2 is referred as CoS 2 /C hereaer).…”

Recent Progress in Cathode Materials for Thermal Batteries

“…Liu et al also studied carbon-coated CoS 2 that was fabricated using hydrothermal synthesis. 18) In this work, a carbon-coated CoS 2 composite was prepared using a facile onepot hydrothermal method with glucose as a carbon source. During the growth of CoS 2 , the glucose molecules were adsorbed and carbonized in situ on the surface of the as-synthesized CoS 2 , and the resulting carbon coating provided improved electrical conductivity and discharge performance to the composite.…”

“…The most commonly used cathode material to date is FeS 2 . In addition to studies on optimizing electrode fabrication using FeS 2 , [10][11][12][13][14][15] studies have been conducted on the use of materials such as CoS 2 , [16][17][18][19][20][21] NiS 2 , [22][23][24] NiCl 2 , [25][26][27][28] CuVO, [29][30] and others. [31][32][33] Masset et al cited the following key properties to be considered as cathode materials for thermal batteries: 4) • Redox potential: it should have a discharge potential that is compatible with the electrochemical window of the electrolyte in order to prevent oxidation.…”

“…(c) Discharge capacity, (d) energy, (e) pulse power, and (f) polarization data from CoS 2 and C@CoS 2 . Reprinted with permission from Ref [18]…”