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Molybdenum Carbide-Embedded Multichannel Hollow Carbon Nanofibers as Bifunctional Catalysts for Water Splitting.
Chemistry - An Asian Journal ( IF 3.5 ) Pub Date : 2020-05-04 , DOI: 10.1002/asia.201901815
Changchun Ji 1 , Guang Yang 1 , P Robert Ilango 2 , Junnan Song 2 , Deshuang Yu 2 , Sujun Han 1 , Dongxing Zhang 1 , Linlin Li 2 , Shengjie Peng 2
Affiliation  

With the environmental pollution and non‐renewable fossil fuels, it is imperative to develop eco‐friendly, renewable, and highly efficient electrocatalysts for sustainable energy. Herein, a simple electrospinning process used to synthesis Mo2C‐embedded multichannel hollow carbon nanofibers (Mo2C‐MCNFs) and followed by the pyrolysis process. As prepared lotus root‐like nanoarchitecture could offer rich porosity and facilitate the electrolyte infiltration, the Mo2C‐MCNFs delivered favourable catalytic activity for HER and OER. The resultant catalysts exhibit low overpotentials of 114 mV and 320 mV at a current density of 10 mA cm−2 for HER and OER, respectively. Furthermore, using the Mo2C‐MCNFs catalysts as a bifunctional electrode toward overall water splitting, which only needs a small cell voltage of 1.68 V to afford a current density of 10 mA cm−2 in the home‐made alkaline electrolyzer. This interesting work presents a simple and effective strategy to further fabricating tunable nanostructures for energy‐related applications.

中文翻译:

嵌入碳化钼的多通道中空碳纳米纤维,作为用于水分解的双功能催化剂。

由于环境污染和不可再生的化石燃料,必须开发环保,可再生和高效的电催化剂来实现可持续能源。在这里,一个简单的静电纺丝工艺用于合成嵌入Mo 2 C的多通道中空碳纳米纤维(Mo 2 C-MCNFs),然后进行热解工艺。制备的lotus状纳米结构可以提供丰富的孔隙度并促进电解质的渗透,因此Mo 2 C-MCNFs对HER和OER具有良好的催化活性。对于HER和OER,在10mA cm -2的电流密度下,所得催化剂分别表现出114mV和320mV的低过电势。此外,使用Mo 2C‐MCNFs催化剂可作为双功能电极,实现整体水分解,仅需1.68 V的小电池电压即可在自制的碱性电解槽中提供10 mA cm -2的电流密度。这项有趣的工作提出了一种简单有效的策略,可以进一步制造与能源相关的可调谐纳米结构。
更新日期:2020-07-01
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