【摘要】 层状双金属氢氧化物（LDH）和金属有机框架（MOF）,凭借其良好的结构特征和电化学特性,在电化学析氧领域展现出广泛的研究前景。本实验提出由MOF原位转化成LDH制备MOF和LDH的复合催化剂的策略。首先,在泡沫镍上生长均匀的Ni-BDC,再以Ni-BDC为基底,通过Ni-BDC中金属节点部分原位转化为LDH,制备Ni-BDC和NiFeLDH的复合催化剂。该结构有效抑制LDH纳米片的堆叠,同时很好地保留Ni-MOF的多孔骨架,展现出良好的析氧催化性能,其在100 mA·cm^-2的电流密度下,所需的过电势仅为245 mV。更多还原

【Abstract】 Layered double hydroxides（LDH） and metal-organic frameworks（MOF）,with their excellent structural features and electrochemical properties,have shown broad research prospects in the field of electrochemical oxygen evolution.This experiment proposes a strategy for preparing a composite catalyst of MOF and LDH by in-situ conversion of MOF.Firstly,uniform Ni-BDC is grown on nickel foam,and then Ni-BDC is used as the substrate to prepare a composite catalyst of Ni-BDC and NiFeLDH through the insitu conversion of the metal nodes in Ni-BDC to LDH.This structure effectively inhibits the stacking of LDH nanosheets and well retains the porous skeleton of Ni-MOF,demonstrating excellent oxygen evolution catalytic performance.At a current density of 100 mA·cm^-2,the required overpotential is only 245 mV.更多还原