<br>在类似手风琴的 MXene 上构建过渡金属硫属化物的功能化电催化剂以促进析氢反应,Inorganic Chemistry

当前位置： X-MOL 学术 › Inorg. Chem. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

在类似手风琴的 MXene 上构建过渡金属硫属化物的功能化电催化剂以促进析氢反应
Inorganic Chemistry ( IF 4.3 ) Pub Date : 2023-11-29 , DOI: 10.1021/acs.inorgchem.3c03206
Huiting Hu ₁ , Yunhua Zheng ₁ , Yao Zhu ₁ , Long Qian ₁ , Ziyu Yuan ₁ , Yuting Dai ₁ , Tao Zhang ₁ , Dongya Yang ₁ , Fengxian Qiu ₁

Affiliation

MXene 具有独特的层状结构和优异的导电性，其多个表面末端基团有利于电化学反应的良好性能。因此，二维（2D）层状MXene基催化剂可能成为替代传统贵金属电催化剂的新型高效电催化剂。在这项工作中，将过渡金属硫属化物（MoS ₂ /CuS）和MXene结合起来制备用于析氢反应（HER）的2D电催化剂（MoS ₂ /CuS/MXene）。 MXene表现出手风琴形状的大比表面积，这对于纳米材料的生长非常有利。 CuS/MXene 促进电子转移并改善 HER 的暴露活性位点。暴露的MoS ₂边缘表现出较高的化学吸附能力，有利于HER。电化学测试表明MoS ₂ /CuS/MXene电催化剂可以降低HER的电荷转移阻力并增加HER的活性位点，从而提高催化性能。 MoS ₂ /CuS/MXene 电催化剂可提供高效的 HER 和低过电势 (115 mV@10 mA cm ^–2 )。这项工作提供了一种创建层状过渡金属硫属化物和 MXene 基 HER 电催化剂的新思路。

"点击查看英文标题和摘要"

Constructing a Functionalized Electrocatalyst of a Transition Metal Chalcogenide on Accordion-Like MXene to Boost the Hydrogen Evolution Reaction

MXenes exhibit unique layered structures and excellent electrical conductivity, and their multiple surface termination groups are favorable for hosting impressive performance for electrochemical reactions. Therefore, a two-dimensional (2D) layered MXene-based catalyst may become a novel high-efficiency electrocatalyst to replace traditional noble metal electrocatalysts. In this work, a transition metal chalcogenide (MoS₂/CuS) and MXene are combined to prepare a 2D electrocatalyst (MoS₂/CuS/MXene) for the hydrogen evolution reaction (HER). MXene exhibited a large specific surface area in the shape of an accordion, which was very beneficial for the growth of nanomaterials. CuS/MXene promoted electron transfer and improved the exposed active site for HER. The exposed MoS₂ edges exhibited a high chemical adsorption capacity, which is conducive to HER. Electrochemical tests reveal that the MoS₂/CuS/MXene electrocatalyst can reduce the charge transfer resistance toward the HER and increase active sites for HER, leading to enhancing the catalytic performance. The MoS₂/CuS/MXene electrocatalyst affords an efficient HER with a low overpotential (115 mV@10 mA cm^–2). This work offers a new idea to create layered transition metal chalcogenide- and MXene-based electrocatalysts for HER.

更新日期：2023-11-29

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南