Three-dimensional interconnected MoS2 nanosheets on industrial 316L stainless steel mesh as an efficient hydrogen evolution electrode
Three-dimensional interconnected MoS2 nanosheets on industrial 316L stainless steel mesh as an efficient hydrogen evolution electrode
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工业316L不锈钢网上三维互连MoS2纳米片作为高效析氢电极
DOI：
10.1016/j.ijhydene.2018.11.172
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发表时间：
2019-01
影响因子：
7.2
通讯作者：
Yuan Shouqi
中科院分区：
文献类型：
--
作者：
Zhang Kewei;Liu Yanhong;Wang Bo;Yu Furong;Yang Yalin;Xing Lei;Hao Jinhui;Zeng Jun;Mao Baodong;Shi Weidong;Yuan Shouqi
开发廉价高效的电催化剂对实现大规模制氢具有重要意义。本文选用廉价的不锈钢作为导电基体，负载MoS 2作为阴极，在碱性条件下实现高效HER。采用水热法在不同目数的316不锈钢网片上均匀生长了相互连接的MoS 2纳米片。优化后的MoS 2/不锈钢电催化剂表现出上级的电催化性能，在10 mA cm− 2时的过电位为160 mV，在1 M KOH中的Tafel斜率为61 mV dec− 1。对MoS 2/不锈钢电催化剂的电化学性能进行了系统的研究，并与常用的碳布进行了比较，以更好地理解上级HER性能以及稳定性的来源。通过协同优化MoS 2纳米片和廉价的不锈钢基底，将MoS 2纳米片连接在不锈钢上，为在强碱性环境中开发高效、稳定的HER催化剂提供了一种替代策略。
The development of inexpensive and competent electrocatalysts for high-efficiency hydrogen evolution reaction (HER) has been greatly significant to realize hydrogen production in large scale. In this paper, we selected the inexpensive and commercially accessible stainless steel as the conductive substrate for loading MoS2as a cathode for efficient HER under alkaline condition. Interconnected MoS2nanosheets were grown uniformly on 316-type stainless steel meshes with different mesh numbers via a facile hydrothermal way. And the optimized MoS2/stainless steel electrocatalysts exhibited superior electrocatalytic performance for HER with a low overpotential of 160 mV at 10 mA cm−2and a small Tafel slope of 61 mV dec−1in 1 M KOH. Systematic study of the electrochemical properties was performed on the MoS2/stainless steel electrocatalysts in comparison with the commonly used carbon cloth to better comprehend the origin of the superior HER performance as well as stability. By collaborative optimization of MoS2nanosheets and the cheap stainless steel substrate, the interconnected MoS2nanosheets on stainless steel provide an alternative strategy for the development of efficient and robust HER catalysts in strong alkaline environment.
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