Realizing large-scale and controllable fabrication of active cobalt oxide nanorod catalysts for zinc-air battery
Date
2019
Authors
Da, P.
Wu, M.
Qiu, K.
Yan, D.
Li, Y.
Mao, J.
Dong, C.
Ling, T.
Qiao, S.
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Journal article
Citation
Chemical Engineering Science, 2019; 194:127-133
Statement of Responsibility
Pengfei Da, Mengying Wu, Kangwen Qiu, Dongyang Yan, Yuejiao Li, Jing Mao, Cunku Dong, Tao Ling, Shizhang Qiao
Conference Name
Abstract
Driven by the intensified demand for energy storage systems with high-energy density and safety, all-solid-state zinc (Zn) air batteries have drawn extensive attentions. However, the development of non-precious metals with high catalytic activity as the air electrode is still a big challenge. In this work, we realize the large-scale fabrication of single-crystal CoO nanorods with high active facets and abundant oxygen vacancies in-situ on conductive substrate, which exhibits superior electrocatalytic activity in both oxygen reduction reaction and oxygen evolution reaction. The all-solid-state Zn-air batteries assembled with such free-standing CoO NRs show low charge/discharge overpotentials, a high energy density and a high cyclic stability. Our work indicates that the rational structure design of catalysts can pave a new route to next generation efficient and durable electrochemical devices.
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