WO3-x Nanoplates Grown on Carbon Nanofibers for an Efficient Electrocatalytic Hydrogen Evolution Reaction
WO3-x Nanoplates Grown on Carbon Nanofibers for an Efficient Electrocatalytic Hydrogen Evolution Reaction
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在碳纳米纤维上生长的 WO3-x 纳米板用于高效电催化析氢反应
DOI：
10.1021/acsami.6b05245
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发表时间：
2016-07-20
影响因子：
9.5
通讯作者：
Yao, JuMing
中科院分区：
文献类型：
--
作者：
Chen, JiaDong;Yu, DanNi;Yao, JuMing
寻找具有高活性的析氢反应（HER）非贵金属催化剂对于低成本、大规模高效生产氢气至关重要。在此，我们报告了一种新型 WO3-x 催化剂，通过静电纺丝在碳纳米纤维垫（CFM）上合成，然后在管式炉中进行碳化过程。通过简单的方法定制催化剂的形貌和组成，并将混合催化剂垫直接用作阴极来研究其 HER 性能。值得注意的是，所制备的催化剂表现出显着增强的 HER 活性，表现出较小的过电势、较高的交换电流密度和较高的阴极电流密度。 WO3-x 的不良结晶度、WO3-x 的高电导率以及电纺 CNF 的使用导致了其卓越的电催化性能。目前的工作概述了一种合成基于过渡金属氧化物（TMO）的碳纳米纤维垫的简单方法，该方法在 HER 方面具有广阔的应用前景。
The search for non-noble metal catalysts with high activity for the hydrogen evolution reaction (HER) is crucial for efficient hydrogen production at low cost and on a large scale. Herein, we report a novel WO3-x catalyst synthesized on carbon nanofiber mats (CFMs) by electrospinning and followed by a carbonization process in a tubal furnace. The morphology and composition of the catalysts were tailored via a simple method, and the hybrid catalyst mats were used directly as cathodes to investigate their HER performance. Notably, the as-prepared catalysts exhibit substantially enhanced activity for the HER, demonstrating a small overpotential, a high exchange current density, and a large cathodic current density. The remarkable electrocatalytic performances result from the poor crystallinity of WO3-x, the high electrical conductivity of WO3-x, and the use of electrospun CNFs. The present work outlines a straightforward approach for the synthesis of transition metal oxide (TMO)-based carbon nanofiber mats with promising applications for the HER.