内核含Pd的Pt基核壳结构电催化剂
Pd-Containing Core/Pt-Based Shell Structured Electrocatalysts
摘要
Abstract
Fuel cell vehicles (FCVs) have been a burgeoning industry in China,and are currently on the verge of widespread commercialization.The platinum-based electrocatalyst is one of the key materials in proton exchange membrane fuel cells (PEMFCs).The relatively low activity and durability,and high cost of the electrocatalyst impede the further development of PEMFCs as a clean energy technology.It has been widely anticipated that core-shell structured low-platinum electrocatalysts with high performance toward oxygen reduction reaction (ORR) will eventually resolve this bottleneck issue.Regardless of significant progress,there are still many remaining issues,such as complicated synthesis route,the large sizes of core materials like Pd,and lack of macroscopic characterization of the core-shell structures.Herein,we introduce two new synthetic methods (one pot synthesis and regioselective atomic layer deposition (ALD) combined with a wet chemical method) for the fabrication of core-shell structured Pd3Au@Pt/C electrocatalysts with high ORR performance.These two synthetic approaches allow us to well control the diameter of the core nanoparticle to around 5 nm.Cyclic voltammetry (CV) and formic acid oxidation reaction (FAOR) were found to be suitable for investigating the integrity of the Pt shell on the core particles.This work represents a new avenue for the macroscopic characterization of the core-shell structured electrocatalysts with Pd or Pd alloy as the core material.关键词
质子交换膜燃料电池/核壳结构电催化剂/氧还原反应/甲酸氧化反应/耐久性Key words
Proton exchange membrane fuel cell/Core-shell structured electrocatalyst/Oxygen reduction reaction/Formic acid oxidation reaction/Durability分类
化学化工引用本文复制引用
吕洋,宋玉江,刘会园,李焕巧..内核含Pd的Pt基核壳结构电催化剂[J].物理化学学报,2017,33(2):283-294,12.基金项目
The project was supported by the National Key Research & Development Program of China (2016YFB0101307),National Key Basic Research Program of China (973) (2012CB215502),National Natural Science Foundation of China (21003114,21103163,21306188,21373211,21306187),Liaoning BaiQianWan Talents Program,China (201519),Program for Liaoning Excellent Talents in University,China (LR2015014),Dalian Excellent Young Scientific and Technological Talents,China (2015R006),and Fundamental Research Funds for the Central Universities,China (DUT15RC(3)001,DUT15ZD225).国家重点研发计划(2016YFB0101307),国家重点基础研究发展计划(973) (2012CB215502),国家自然科学基金(21003114,21103163,21306188,21373211,21306187),辽宁省百千万人才工程(201519),辽宁省高校优秀人才计划(LR2015014),大连市优秀青年科技人才(2015R006)及中央高校基本科研基金(DUT15RC(3)001,DUT15ZD225)资助项目 （2016YFB0101307）
