电催化剂
聚酰亚胺
材料科学
铂金
Atom(片上系统)
纳米技术
化学工程
催化作用
物理化学
电化学
电极
有机化学
化学
图层(电子)
计算机科学
工程类
嵌入式系统
作者
S. Zhang,Zhenzhong Wu,Yunxia Liu,Jing Bai,Yidan Ding,Ziwei Ma,Haiping Lin,Longsheng Zhang,Tianxi Liu
标识
DOI:10.1002/aenm.202403945
摘要
Abstract Electrocatalytic hydrogen evolution reaction (HER) is widely regarded as a promising approach to convert renewable electricity into hydrogen. Platinum (Pt) based catalysts demonstrate superior activity toward acidic HER, but the scarcity of Pt metal presents obstacles for large‐scale application. Therefore, constructing Pt single‐atom catalysts (SACs) with maximum metal‐atom‐utilization efficiency renders a feasible strategy, which however is critically hindered by an unsatisfactory catalyst lifetime. Here, a general strategy is reported to develop novel HER catalysts with Pt single atoms immobilized on polyimide support, which can display an exceptional activity toward acidic HER while achieving an outstandingly high durability with negligible activity decay for 760 h of continuous operation at 100 mA cm −2 . The detailed experimental and theoretical results unravel that, the polyimide support lowers the d‐band level of Pt site with a reduced energy barrier for acidic HER and simultaneously promotes the proton concentration near Pt site, leading to appreciably improved HER kinetics. Additionally, the polyimide support is versatile toward immobilizing ruthenium, palladium, and other single metal atoms, providing an alternative approach to develop SACs with superior catalytic activity and durability.
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