Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 105, Issue -, Pages -Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2019.106487
Keywords
ZnCo2S4; Nanoarray; Electrocatalysts; Water splitting
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Funding
- National Natural Science Foundation of China [21775078, 21802079]
- Shandong Provincial Natural Science Foundation of China [ZR2016JL007]
- China Postdoctoral Science Foundation [2018M642605]
- Qingdao Municipal Science and Technology Bureau [16-5-1-44-jch]
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Exploring transition metal-based, highly efficient and bifunctional catalysts for electrochemical water splitting remains a challenging task. Herein, ZnCo2S4 nanosheet array supported on nickel foam (ZnCo2S4/NF) is fabricated and demonstrated to be efficacious electrocatalyst for both oxygen evolution and hydrogen evolution reactions. The resulting catalyst affords overpotentials of only 278 mV to achieve 10 mA cm(-2) towards oxygen evolution and 185 mV to reach 10 mA cm(-2) towards hydrogen evolution with superior stability in alkaline solution. The assembled two-electrode water electrolyzer using ZnCo2S4/NF can reach a current density of 10 mA cm(-2) by 1.66 V cell voltage.
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