%0 Journal Article
%T ZIF-67衍生的NiCo-LDH@NF用于高性能超级电容器正极的性能研究<br> Study on the Performance of ZIF-67 Derived NiCo-LDH@NF as Positive Electrode for High-Performance Supercapacitors
%A 栾婷茜
%A 李璐
%J Material Sciences
%P 946-953
%@ 2160-7621
%D 2022
%I Hans Publishing
%R 10.12677/MS.2022.1210106
%X 金属有机骨架(MOFs)具有良好的孔隙率和可调节的形态，是制备高性能层状双氢氧化物(LDHs)的优良牺牲模板。本文首先通过共沉淀方法在泡沫镍上生长的ZIF-67@NF作为模板，再以乙醇为质子溶剂，通过溶剂热法成功制备镍钴层状双氢氧化物(NiCo-LDH@NF)。由于所制备NiCo-LDH纳米片相互交错在一起形成大量空隙，显著缩短了离子的扩散距离；直接与泡沫镍基底相接触，大大地提高了NiCo-LDH的导电性。改善的离子、电子输运使得NiCo-LDH@NF复合电极材料在电流密度为1 A？g？1时展现出1378.7 F？g？1的高比容量。并且，在电流密度为10 A？g？1时，电容保持率为63.4%。本文报道了一种高性能的LDHs电极材料，为超级电容器电极材料的开发提供了新的思路。<br />
Metal organic frameworks (MOFs) have good porosity and adjustable morphology, which are always used as ex-cellent sacrificial templates to derive high-performance layered double hydroxides (LDHs). In this paper, a ZIF-67 template was first prepared by coprecipitation method using Ni foam as a substrate. And then, NiCo-LDH@NF composite material was synthesized via a solvothermal approach with ethanol as a protic solvent. Because the NiCo-LDH nanosheets interleaved with each other to form a large number of voids, the ion diffusion distance was significantly shortened. And the electrical conductivity of NiCo-LDH is greatly improved by directly contacting the Ni foam substrate. The im-proved ion and electron transport enables NiCo-LDH@NF composite electrode a high specific capac-ity of 1378.7 F？g？1 at a current density of 1 A？g？1, and maintain 63.4% capacity at a current density of 10 A？g？1. This work reports a high performance LDHs electrode material, which provides a new idea for the development of electrode materials for supercapacitors.
%K 离子交换，超级电容器，电化学性能<br> Ion Exchange
%K Supercapacitor
%K Electrochemical Perfor-mance
%U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=56776