Mesoporous and ultrathin arrays of cobalt nitride nanosheets for electrocatalytic oxygen evolution
Efficient electrocatalysts for oxygen evolution are vitally important for regenerative fuel cells and metal-air batteries. Herein, 3D mesoporous and ultrathin array of CoN nanosheets are synthesized on the Ni foam via thermal transformation of Co3O4 nanowire arrays. This array imparts enhanced activ...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2019-01-01
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| Series: | Electrochemistry Communications |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1388248118303138 |
| _version_ | 1828766386021728256 |
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| author | Chang Liu Gailing Bai Xili Tong Yunwei Wang Baoying Lv Nianjun Yang Xiang-Yun Guo |
| author_facet | Chang Liu Gailing Bai Xili Tong Yunwei Wang Baoying Lv Nianjun Yang Xiang-Yun Guo |
| author_sort | Chang Liu |
| collection | DOAJ |
| description | Efficient electrocatalysts for oxygen evolution are vitally important for regenerative fuel cells and metal-air batteries. Herein, 3D mesoporous and ultrathin array of CoN nanosheets are synthesized on the Ni foam via thermal transformation of Co3O4 nanowire arrays. This array imparts enhanced active sites, mass diffusion, and electron transfer towards oxygen evolution reaction. The low overpotential of 323 mV at 30 mA cm−2, a Tafel slope of 74 mV dec−1, and a high potential conservation in a long process of electrolysis process are achieved. It is thus one robust and efficient electrocatalyst for OER. Keywords: CoN nanosheet, Oxygen evolution reaction, Electrocatalyst |
| first_indexed | 2024-12-11T07:04:52Z |
| format | Article |
| id | doaj.art-cc1a34750728426ba26abda9228e3ebf |
| institution | Directory Open Access Journal |
| issn | 1388-2481 |
| language | English |
| last_indexed | 2024-12-11T07:04:52Z |
| publishDate | 2019-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Electrochemistry Communications |
| spelling | doaj.art-cc1a34750728426ba26abda9228e3ebf2022-12-22T01:16:31ZengElsevierElectrochemistry Communications1388-24812019-01-01988791Mesoporous and ultrathin arrays of cobalt nitride nanosheets for electrocatalytic oxygen evolutionChang Liu0Gailing Bai1Xili Tong2Yunwei Wang3Baoying Lv4Nianjun Yang5Xiang-Yun Guo6State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China; University of the Chinese Academy of Sciences, Beijing 100039, ChinaState Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China; University of the Chinese Academy of Sciences, Beijing 100039, ChinaState Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China; Corresponding authors.State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, ChinaGuangxi University of Science and Technology, Liuzhou 545000, ChinaInstitute of Materials Engineering, University of Siegen, Siegen 57076, Germany; Corresponding authors.State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, ChinaEfficient electrocatalysts for oxygen evolution are vitally important for regenerative fuel cells and metal-air batteries. Herein, 3D mesoporous and ultrathin array of CoN nanosheets are synthesized on the Ni foam via thermal transformation of Co3O4 nanowire arrays. This array imparts enhanced active sites, mass diffusion, and electron transfer towards oxygen evolution reaction. The low overpotential of 323 mV at 30 mA cm−2, a Tafel slope of 74 mV dec−1, and a high potential conservation in a long process of electrolysis process are achieved. It is thus one robust and efficient electrocatalyst for OER. Keywords: CoN nanosheet, Oxygen evolution reaction, Electrocatalysthttp://www.sciencedirect.com/science/article/pii/S1388248118303138 |
| spellingShingle | Chang Liu Gailing Bai Xili Tong Yunwei Wang Baoying Lv Nianjun Yang Xiang-Yun Guo Mesoporous and ultrathin arrays of cobalt nitride nanosheets for electrocatalytic oxygen evolution Electrochemistry Communications |
| title | Mesoporous and ultrathin arrays of cobalt nitride nanosheets for electrocatalytic oxygen evolution |
| title_full | Mesoporous and ultrathin arrays of cobalt nitride nanosheets for electrocatalytic oxygen evolution |
| title_fullStr | Mesoporous and ultrathin arrays of cobalt nitride nanosheets for electrocatalytic oxygen evolution |
| title_full_unstemmed | Mesoporous and ultrathin arrays of cobalt nitride nanosheets for electrocatalytic oxygen evolution |
| title_short | Mesoporous and ultrathin arrays of cobalt nitride nanosheets for electrocatalytic oxygen evolution |
| title_sort | mesoporous and ultrathin arrays of cobalt nitride nanosheets for electrocatalytic oxygen evolution |
| url | http://www.sciencedirect.com/science/article/pii/S1388248118303138 |
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