Catalyzing polysulfide conversion by g-C3N4 in a graphene network for long-life lithium-sulfur batteries
Meng Wang, Qinghua Liang, Junwei Han, Ying Tao, Donghai Liu, Chen Zhang, Wei Lv, Quan-Hong Yang
Nano Research | TSINGHUA UNIV PRESS | Published : 2018
The practical application of lithium-sulfur batteries with a high energy density has been plagued by the poor cycling stability of the sulfur cathode, which is a result of the insulating nature of sulfur and the dissolution of polysulfides. Much work has been done to construct nanostructured or doped carbon as a porous or polar host for promising sulfur cathodes, although restricting the polysulfide shuttle effect by improving the redox reaction kinetics is more attractive. Herein, we present a well-designed strategy by introducing graphitic carbon nitride (g-C3N4) into a three-dimensional hierarchical porous graphene assembly to achieve a synergistic combination of confinement and catalyzat..View full abstract
Awarded by National Basic Research Program of China
Awarded by National Natural Science Foundation of China
This work was supported by the National Basic Research Program of China (No. 2014CB932400). Q.-H. Y. is grateful for the support of the National Natural Science Foundation of China (No. 51525204) and Y. T. acknowledges support from the National Natural Science Foundation of China (No. 51702229).