文献类型：期刊文献

中文题名：温度调控合成异质结构Ru-Ru_(2)P纳米颗粒负载碳纳米纤维用于高效电催化析氢反应

英文题名：Temperature-controlled synthesis of heterostructured Ru-Ru_(2)P nanoparticles embedded in carbon nanofibers for highly efficient hydrogen production

作者：韦悦[1];徐杲[2];韦渝洁[1];纪律律[1];王騊[1];刘准[2];王晟[1]

机构：[1]Zhejiang Sci Tech Univ, Sch Mat Sci & Engn, Hangzhou 310018, Peoples R China;[2]Shaoxing Univ, Dept Phys, Shaoxing 312000, Peoples R China

年份：2022

卷号：65

期号：10

起止页码：2675

中文期刊名：中国科学：材料科学（英文版）

外文期刊名：Science China Materials

收录：CSTPCD、、CSCD2021_2022、Scopus、CSCD、PubMed

基金：This work was financially supported by the Natural Science Foundation of Zhejiang Province (LQ20B030001 and LY20E020002) and China Postdoctoral Science Foundation (2021M702305).

语种：中文

中文关键词：密度泛函理论计算;Ru基催化剂;催化电流;合成策略;异质界面;碳纳米纤维;异质结构;碱性电解液;

外文关键词：hydrogen evolution reaction;Ru-based electrocatalysts;heterostructure;carbon nanofibers;electrocatalysis

中文摘要：开发高效、低价、稳定的析氢催化剂是实现电解水制氢规模产业化的关键,但仍面临巨大挑战.在本文中,我们通过静电纺丝和控温热处理的合成路径制备了一种高活性Ru基催化剂材料,该催化剂由异质结构Ru-Ru_(2)P纳米颗粒均匀负载于N、P共掺杂碳纳米纤维构成.所制备的Ru-Ru_(2)P异质催化剂表现出优异的电催化析氢活性,在酸性和碱性电解液中产生10 mA cm^(?2)的催化电流密度分别仅需11和14 mV的过电位,其性能优于对比样品纯Ru和纯Ru_(2)P催化剂.密度泛函理论计算结果表明在Ru和Ru_(2)P的异质界面处存在电子耦合效应,从而有效调控催化剂界面电子结构,优化活性位点氢吸附能并提高导电性,实现了高效电催化析氢.本合成策略适用于制备一系列过渡金属磷化物纳米纤维,因而在催化和储能等领域具有广泛的应用前景.

外文摘要：Developing highly efficient,cost-effective,and stable electrocatalysts for hydrogen evolution reaction(HER)is of considerable importance but remains challenging.Herein,we report the fabrication of a robust Ru-based electrocatalyst,which comprises heterostructured Ru-Ru_(2)P nanoparticles that are embedded in the N,P-codoped carbon nanofibers(CNFs),through a synthetic strategy involving electrospinning and temperature-controlled pyrolysis treatment.The as-prepared Ru-Ru_(2)P catalyst(Ru-Ru_(2)P@CNFs)shows excellent HER catalytic activities with low overpotentials of 11 and 14 mV in acidic and alkaline media,respectively,to achieve a current density of 10 mA cm^(?2),which are superior to the individual components of pure Ru and Ru_(2)P catalysts.Density functional theory calculations demonstrate the existence of electronic coupling effect between Ru and Ru_(2)P at the heterointerfaces,leading to a well-modulated electronic structure with optimized hydrogen adsorption strength and enhanced electrical conductivity for efficient HER electrocatalysis.In addition,the overall synthetic strategy can be generalized for the synthesis of a series of transitional metal phosphide-based nanofibers,thereby holding a remarkable capacity for various potential applications.