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ToolsXu, Xiaolong, Wang, Shuo, Guo, Shiquan, San Hui, Kwan, Ma, Jiameng, Dinh, Duc Anh, Hui, Kwun Nam, Wang, Hao, Zhang, Lipeng and Zhou, Guowei (2022) Cobalt phosphosulfide nanoparticles encapsulated into heteroatom-doped carbon as bifunctional electrocatalyst for Zn−air battery. Advanced Powder Materials, 1 (3). ISSN 2772-834X
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Abstract
The design of non‐noble electrocatalysts with low overpotential, high effectiveness, and good cycling stability for oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) is highly desirable for high-performance Zn–air batteries. Herein, CoPS nanoparticles encapsulated with S, P, N tri-doped carbon material (SPNC) is proposed as bifunctional electrocatalyst of ORR and OER derived from zeolitic imidazolate framework-67. Density functional theory calculations consistently reveal that P element in CoPS@SPNC improve the electrical conductivity and reduce OH* hydrogenation energy barrier on Co sites, thereby facilitating the overall ORR/OER activities. A flexible Zn–air battery with CoPS@SPNC delivers an overpotential of 0.49 V, an energy efficiency above 80%, and a discharge voltage of 1.29 V at 2 mA cm−2 for 80 h. Such strategy could provide numerous possibilities for the design of highly efficient electrocatalysts.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | sdg 7 - affordable and clean energy ,/dk/atira/pure/sustainabledevelopmentgoals/affordable_and_clean_energy |
| Faculty \ School: | |
| Related URLs: | |
| Depositing User: | LivePure Connector |
| Date Deposited: | 07 Jan 2022 16:30 |
| Last Modified: | 01 Jul 2022 03:30 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/82921 |
| DOI: | 10.1016/j.apmate.2021.12.003 |
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