Two new pseudo-isomeric nickel(Ⅱ)metal-organic frameworks with efficient electrocatalytic activity toward methanol oxidation  

作　　者：Shan Liu Xiao Wang Hong-Guang Yu Ya-Pan Wu Bo Li Ya-Qian Lan Tao Wu Jian Zhang Dong-Sheng Li 

机构地区：[1]College of Materials and Chemical Engineering,Key Laboratory of Inorganic Nonmetallic Crystalline and Energy Conversion Materials,China Three Gorges University,Yichang,443002,China

出　　处：《Rare Metals》2021年第2期489-498,共10页稀有金属（英文版）

基　　金：the National Natural Science Foundation of China(Nos.21971143,21673127,21671119,51572152 and 21805165);the Program of the Ministry of Education of China for Introducing Talents of Discipline to Universities(No.DT20015);Innovation Team of Young and Middle-aged Research(ITOYMR)in the Higher Education Institutions of Hubei Province(No.T201904)。

摘　　要：Searching for non-noble metal catalysts with high activities and low price is critical to the commercialization of methanol oxidation in the process of fuel cells.Herein,two new pseudo-isomeric Ni metal-organic frameworks(Ni-MOFs)(CTGU-17/CTGU-18)have been prepared with 1,4-naphthalenedi-carboxylate(H_(2)NDC),4,4’-dipyridyl amine(DPA)and Ni(ClO_(4))_(2)under hydrothermal condition.Each phase contains one water molecule,but differs dramatically in its bonding to the framework,resulting in different topological networks with fourfold interpenetrating 4-connected dia net(CTGU-17)and(3,7)-connected net(CTGU-18)and diverse electrocatalytic performance for methanol oxidation reaction(MOR).Remarkably,by combining each MOF with the conductive additive,acetylene black(AB),a composite material,AB&CTGU-18(2:4)was confirmed to have an excellent performance for MOR with a high mass specific peak current of 442.3 mA·mg^(-1).The enhanced electrocatalytic activities and robustness might be attributed to the synergetic effect of acetylene black and the active metal centers of MOFs particles for methanol oxidation.The present work would provide a new insight for the rational design of MOFs-based composites with enhanced methanol oxidation reaction performance.

关 键 词：Nickel(Ⅱ) MOFS Composite materials ELECTROCATALYSIS Methanol oxidation 

分 类 号：TM911.4[电气工程—电力电子与电力传动] O643.36[理学—物理化学]