标题:Graphene layer encapsulated MoNi4-NiMoO4 for electrocatalytic water splitting
作者:An, Lihua ;Zang, Xinyue ;Ma, Linzheng ;Guo, Jinxue ;Liu, Qingyun ;Zhang, Xiao
作者机构:[An, Lihua ;Zang, Xinyue ;Guo, Jinxue ;Zhang, Xiao ] Key Laboratory of Optic-Electric Sensing and Analytical Chemistry for Life Science, MOE, Key Labo 更多
通讯作者:Guo, Jinxue
来源:Applied Surface Science
出版年:2020
卷:504
DOI:10.1016/j.apsusc.2019.144390
摘要:Developing active and cheap bifunctional electrocatalysts is crucial and challenging for overall water splitting. This work reports a core-shell structured catalyst supported on nickel foam, which is composed of hybrid MoNi4 alloy and NiMoO4 encapsulated in graphene shell layer. The core catalyst of MoNi4-NiMoO4 supplies robust intrinsic activity and high conductivity. The graphene shell accelerates the charge transfer and provides additional protection for core catalyst. Hence, the present G@MoNi4-NiMoO4/NF exhibits excellent catalytic properties for alkali water splitting, with low overpotentials of 55 mV and 206 mV at 10 mA cm−2 for HER and OER, respectively. The efficient activity for overall water splitting is further demonstrated by a low cell voltage of 1.44 V at 10 mA cm−2 in the bifunctional G@MoNi4-NiMoO4/NF electrodes assembled electrolyzer, showing great promise for practical application.
© 2019 Elsevier B.V.
收录类别:EI
资源类型:期刊论文
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