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|Title:||Realizing large-scale and controllable fabrication of active cobalt oxide nanorod catalysts for zinc-air battery|
|Citation:||Chemical Engineering Science, 2019; 194:127-133|
|Pengfei Da, Mengying Wu, Kangwen Qiu, Dongyang Yan, Yuejiao Li, Jing Mao, Cunku Dong, Tao Ling, Shizhang Qiao|
|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.|
|Keywords:||Electrocatalysis; Zn-air battery; CoO; nanomaterials|
|Rights:||© 2018 Elsevier Ltd. All rights reserved.|
|Appears in Collections:||Chemical Engineering publications|
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