Self-supporting hierarchically micro/nano-porous Ni_(3)P-Co_(2)P-based film with high hydrophilicity for efficient hydrogen production

作     者：Xiangtao Yu Xiangyu Ren Yanwei Zhang Zhangfu Yuan Zhuyin Sui Mingyong Wang Xiangtao Yu;Xiangyu Ren;Yanwei Zhang;Zhangfu Yuan;Zhuyin Sui;Mingyong Wang

作者机构：Collaborative Innovation Center of Steel TechnologyUniversity of Science and Technology BeijingBeijing 100083China School of Chemistry&Chemical EngineeringYantai UniversityYantai 264005China State Key Laboratory of Advanced MetallurgyUniversity of Science and Technology BeijingBeijing 100083China 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2021年第65卷第6期

页      面：118-125页

核心收录：

学科分类：081702[工学-化学工艺] 081705[工学-工业催化] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0817[工学-化学工程与技术] 080501[工学-材料物理与化学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(Nos.51804023 and 51874020) the Fundamental Research Funds for the Central Universities(Nos.FRF-TP-18-007A1) the China Postdoctoral Science Foundation(Nos.2019M650489 and 2019T120046) Taishan Scholars Program(No.tsqn201909087) 

主　　题：Self-supporting Micro/nano-porous film High hydrophilicity Bubble detachment High HER(hydrogen evolution reaction) catalytic performance 

摘      要：Designing efficient and stable non-precious metal HER(hydrogen evolution reaction)electrocatalysts with high large current density adaptability is significant for industrial application of hydrogen production by water ***,a facile strategy was developed to construct a multi-phase Ni3 P-Co_(2)P-(Ni-Co)film with self-supporting hierarchically micro/nano-porous structure by using bubble template method electrodeposition of self-supporting micro-porous Ni Co P film,oxygen-free annealing for phase separation producing Ni_(3)P-Ni-Co_(2)P-Co structure,and acid etching for constructing surface nano-porous *** effective active sites for HER was significantly increased due to the hierarchically micro/nano-porous structure,which not only enlarged the surface roughness,but enhanced the bubble detachment by improving the ***,the HER electrolysis durability was improved benefiting from the Ni_(3)P-Co_(2)P phases with high corrosion resistance(especially in acid solution)and the self-supporting film structure without ***,the Ni Co P-OA-AE film exhibited high HER catalytic performance,which delivered a current density of 10 m A cm^(-2)at a low overpotential of 42.9 and 39.7 m V in 1 M KOH and 0.5 M H_(2)SO_(4),*** also possessed high long-term electrolysis durability,and the cell voltage of water electrolysis using self-supporting porous Ni Co P-OA-AE||Ir O_(2)-Ta_(2)O_(5) electrolyzer at 500 m A cm^(-2)for 250 h in 0.5 M H_(2)SO_(4 )is only 2.9 V.