Author
Listed:
- Wei Zhang
(Fudan University)
- Jiangwei Zhang
(Inner Mongolia University)
- Nan Wang
(Fudan University)
- Kerun Zhu
(Fudan University)
- Chaochao Yang
(Fudan University)
- Yan Ai
(Fudan University)
- Fengmei Wang
(Fudan University)
- Yong Tian
(Fudan University)
- Yuzhu Ma
(Fudan University
Inner Mongolia University)
- Yao Ma
(Fudan University)
- Xingmiao Zhang
(Fudan University)
- Linlin Duan
(Fudan University)
- Dongliang Chao
(Fudan University)
- Fei Wang
(Fudan University)
- Dongyuan Zhao
(Fudan University
Inner Mongolia University)
- Wei Li
(Fudan University)
Abstract
Rechargeable zinc–air batteries (ZABs) are considered to be one of the most sustainable alternative systems in a post-lithium-ion future owing to their lowest possible dependency on critical raw materials and high theoretical energy densities. However, their performance is still not up to par with their potential because of the sluggish kinetics of the oxygen reduction reaction. Here we report a single-atom catalyst design that transforms the sluggish four-electron oxygen reduction reaction into a fast two-electron pathway and enables a zinc peroxide (ZnO2) chemistry in ZABs. With accessible FeN2S2 active sites on mesoporous graphene, the catalyst serves to promote transport of electrolyte, oxygen and electron and confines the growth of ZnO2, which would otherwise form dead products. As a result, as-fabricated ZAB in a neutral electrolyte shows a voltage as high as 1.2 V at 0.2 mA cm−2, a high round-trip efficiency of 61% and an excellent operation stability beyond ∼400 h. This work provides guidelines for the rational design of multifunctional cathodes and would accelerate the adoption of sustainable batteries in the metal–air category.
Suggested Citation
Wei Zhang & Jiangwei Zhang & Nan Wang & Kerun Zhu & Chaochao Yang & Yan Ai & Fengmei Wang & Yong Tian & Yuzhu Ma & Yao Ma & Xingmiao Zhang & Linlin Duan & Dongliang Chao & Fei Wang & Dongyuan Zhao & W, 2024.
"Two-electron redox chemistry via single-atom catalyst for reversible zinc–air batteries,"
Nature Sustainability, Nature, vol. 7(4), pages 463-473, April.
Handle:
RePEc:nat:natsus:v:7:y:2024:i:4:d:10.1038_s41893-024-01300-2
DOI: 10.1038/s41893-024-01300-2
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