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Tailored ZnO-ZnS heterostructure enables a rational balancing of strong adsorption and high catalytic activity of polysulfides for Li-S batteries by Wanyu Zhang; Donghui Hong; Zhe Su; Shan Yi; Liying Tian; Bo Niu; Yayun Zhang; Donghui Long is a Engineering article available to read on EtoBox.
What is Tailored ZnO-ZnS heterostructure enables a rational balancing of strong adsorption and high catalytic activity of polysulfides for Li-S batteries about?
Electrocatalytic conversion of polysulfides is an effective strategy to alleviate shuttle effects for Li-S batteries, but achieving the synergistic effects between strong adsorption and high catalytic activity with a single catalyst is still challenging. Herein, we report the rational balancing of strong adsorption and high catalytic activity on the tailored ZnO-ZnS/reduced graphene oxide (rGO) heterostructure to achieve significantly enhanced conversion of polysulfides. By integrating the merits of adsorptive ZnO, catalytic ZnS and conductive rGO, the ZnO-ZnS/rGO heterostructures could enable an unrestricted adsorption-diffusion-conversion of polysulfides. Moreover, by controlling the sulfurization degree, the ZnO-ZnS/rGO heterostructure with ZnO/ZnS ratio of 7:3 performs the optimized overall performance, indicative of a trade-off between adsorption and catalytic activity. When served as functional coatings onto the separators, the ZnO-ZnS/rGO heterostructures could greatly promote the redox kinetics and retrain the polysulfides shuttling. The pure sulfur cathode with the 7ZnO-3ZnS/rGO modified separator delivers a high initial specific capacity of 1186 mAh g -1 at 0.5 °C and a l
Who reads Tailored ZnO-ZnS heterostructure enables a rational balancing of strong adsorption and high catalytic activity of polysulfides for Li-S batteries?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Wanyu Zhang; Donghui Hong; Zhe Su; Shan Yi; Liying Tian; Bo Niu; Yayun Zhang; Donghui Long
- Publisher
- Elsevier BV
- Published
- 2022
- Language
- EN
- Field
- Engineering (Physical Sciences)