纺织工程学报2025，Vol.3Issue(5)：1-14,14.
Ti3C2Tx/碳化聚丙烯腈纳米纤维@Pd自支撑电极用于高电流密度下的析氢反应
Ti3C2Tx/carbonized-polyacrylonitrile nanofiber@Pd self-supporting electrode for hydrogen evolution reaction under high current density
摘要
Abstract
To address issues such as catalytic site blockage,decreased exposure rate of active sites,and easy delamination of active layers in powdered electrocatalysts during the hydrogen evolution reaction(HER)under high current densities,a hydrophilic and mechanically flexible self-supporting Ti3C2Tx/carbonized polyacrylonitrile nanofiber(Ti3C2Tx/CPAN)electrode was prepared via a simple vacuum filtration method.By adjusting the ratio of Ti3C2Tx nanosheets to carbon nanofibers,the optimal Ti3C2Tx/CPAN-2 self-supporting electrode was obtained,exhibiting an overpotential of 514 mV and a Tafel slope of 238 mV dec-1at a current density of 50 mA cm-2.Furthermore,leveraging the reducibility of terminal groups on the surface of Ti3C2Tx nanosheets,Pd was in situ reduced on Ti3C2Tx/CPAN-2 to fabricate a Ti3C2Tx/CPAN-2@Pd self-supporting electrode.Benefiting from the metal-support interaction between Ti3C2Tx and in situ-generated Pd,which enhanced the inter-facial bonding strength between the support and the metal,the Ti3C2Tx/CPAN-2@Pd electrode demonstrated an improved over-potential of 181 mV and a Tafel slope of 130 mV dec-1at 50 mA cm-2.Additionally,it exhibited superior cyclic voltammetry(CV)stability compared to commercial Pd-C,confirming its feasibility for stable HER operation under high current densities.关键词
自支撑电极/MXene纳米片/异质结构/高电流密度/电催化析氢Key words
self-supporting electrode/MXene nanosheets/hetero-structure/high current density/electrocatalyt-ic hydrogen evolution分类
轻工业引用本文复制引用
朱悦,杨洋,程丝..Ti3C2Tx/碳化聚丙烯腈纳米纤维@Pd自支撑电极用于高电流密度下的析氢反应[J].纺织工程学报,2025,3(5):1-14,14.基金项目
国家自然科学基金资助项目(21871197) （21871197）
江苏省碳基功能材料与器件高技术研究重点实验室开放课题资助项目(KJS2210). （KJS2210）
