Ionic liquid in situ functionalized carbon nanotubes as metal-free catalyst for efficient electrocatalytic hydrogen evolution reaction
Ionic liquid in situ functionalized carbon nanotubes as metal-free catalyst for efficient electrocatalytic hydrogen evolution reaction
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离子液体原位功能化碳纳米管作为无金属催化剂用于高效电催化析氢反应
DOI：
10.1039/d0nr08817j
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发表时间：
2021
期刊：
影响因子：
6.7
通讯作者：
Li Chang Ming
中科院分区：
文献类型：
--
作者：
Li Tianhao;Chen Yanping;Hu Weihua;Yuan Weiyong;Zhao Qichao;Yao Yanling;Zhang Bing;Qiu Chuntian;Li Chang Ming
开发用于通过电催化水裂解生产氢气的具有成本效益和高性能的催化剂对于满足不断增长的能源需求和扩大氢经济至关重要。本研究设计了一系列无金属碳纳米管（CNT）催化剂，并利用咪唑类离子液体（ILs）原位功能化CNT催化剂，用于增强电催化析氢反应（HER）。理论计算和实验结果表明，用咪唑离子液体功能化碳纳米管有利于电子转移过程，并表现出上级的氢吸附，从而提高了HER的性能。特别是，CNT-IM-Cl显示出优异的电催化活性，并显示出较低的起始过电位和Tafel斜率，分别为80 mV和38 mV dec−1。这项研究突出了IL原位功能化的无金属碳纳米管的电催化HER的显着潜力，并提供了深入了解高效的电催化剂的结构设计。
The development of cost-effective and high-performance catalysts for the production of hydrogen via electrocatalytic water splitting is crucial for meeting the increasing energy demand and expanding the hydrogen economy. In this study, a series of metal-free carbon nanotube (CNT) catalysts were designed and in situ functionalized by imidazolium ionic liquids (ILs) for enhanced electrocatalytic hydrogen evolution reaction (HER). The theoretical calculations and experimental results reveal that the functionalization of CNTs with imidazolium ILs facilitated the electron transfer process and exhibited superior hydrogen adsorption, thereby enhancing the performance of the HER. In particular, CNT-IM-Cl displays excellent electrocatalytic activity and shows a low onset overpotential and Tafel slope of 80 mV and 38 mV dec−1, respectively. This study highlights the significant potential of IL in situ functionalized metal-free CNTs for the electrocatalytic HER and provides insight into the structure design of highly efficient electrocatalysts.