Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
180261 | Electrochemistry Communications | 2011 | 4 Pages |
Abstract
Electrochemical desulfidation of solid sulfide has been studied for the first time in the mixed NaCl–KCl melt. At 700 °C, the equimolar NaCl–KCl enabled highly efficient transport of the S2− ion and high speed electro-reduction of porous WS2 pellets to W nanonodules (50–100 nm). The graphite anode was experimentally confirmed to be an ideal non-consumable anode, on which the S2− ion was oxidised to gaseous sulfur. The current efficiency of the electrolysis of WS2 was higher than 90% and the energy consumption could be lower than 1.23 kWh/kg-W. These findings promise new green methods for the preparation of various transition metals and alloys by electro-desufidation of their solid sulfides.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Chemical Engineering (General)
Authors
Tao Wang, Haiping Gao, Xianbo Jin, Hualin Chen, Junjun Peng, George Z. Chen,