佩多:嘘
材料科学
聚苯胺
催化作用
导电聚合物
电催化剂
路易斯酸
化学工程
电化学
聚合物
电极
有机化学
化学
物理化学
聚合
工程类
复合材料
作者
Xiaozhi Wu,Yulu Xie,Renchao Deng,Zehua Wang,Hao Yang,Jian Chen,Yuwen Hu
标识
DOI:10.1021/acsami.3c17258
摘要
Hybrid organic/inorganic composites with the organic phase tailored to modulate the local chemical environment at the transition metal-based catalyst surface arise as an enchanting category of catalysts for electrocatalysis. A fundamental understanding of how the conductive polymers of different Lewis basicities affect the reaction path is, however, still lacking to guide rational catalyst design. Herein, polyaniline (PANI), poly(3,4-ethylenedioxythiophene) (PEDOT), and poly(vinyl alcohol) (PVA) manifesting different Lewis basicities are compared for their regulatory roles on the hydrogen evolution reaction (HER) and glycerol electrooxidation (GOR) pathways regarding local proton coverage. Concerted efforts from in situ Raman and DFT theoretical calculations unveil that conductive polymer/V2O5 surface with tunable local pH regulated by Lewis acidity/basicity. As a result of the tailored chemical environment, the restructured V2O5/PANI/NF composite demonstrates a low overall potential of 1.55 V at the partial current density of 50 mA cm–2 for formate. The glycerol upgrading assisted hydrogen evolution device composed of V2O5/PANI/NF exhibits excellent electrochemical performance at a maximal Faraday efficiency of 82%, ranking among state of the art.
科研通智能强力驱动
Strongly Powered by AbleSci AI