2D iron-doped nickel MOF nanosheets grown on nickel foam for highly efficient oxygen evolution reaction
2D iron-doped nickel MOF nanosheets grown on nickel foam for highly efficient oxygen evolution reaction
复制标题
在泡沫镍上生长的二维铁掺杂镍 MOF 纳米片可实现高效析氧反应
DOI：
10.1016/j.apsusc.2020.147201
复制
发表时间：
2020-11
影响因子：
6.7
通讯作者：
M. H. Huang
中科院分区：
文献类型：
--
作者：
C. C. Pan;Z. C. Liu;M. H. Huang
近年来，金属有机骨架材料（MOF）因其结构的多样性、高度有序的孔道结构和丰富的活性中心而表现出优异的析氧反应（OER）催化活性。本文采用一步溶剂热法，在导电泡沫镍（Fe-Ni MOF NSs/NF）上原位生长了铁掺杂的镍MOF纳米片（Fe-Ni MOF NSs/NF）。该二维片状结构具有高度暴露的表面积和大量的金属位点，这有利于电催化OER性能。Fe-Ni MOF NS/NF在1 M KOH中表现出上级OER活性，需要258和270 mV的过电位来提供50和100 mA cm-2的电流密度，沿着具有40.8 mV dec-1的低塔菲尔斜率。此外，Fe-Ni MOF NS/NF催化剂的耐久性也是突出的，在50 mA cm-2下连续操作24 h后仅表现出轻微的计时电流衰减。其优异的OER活性可归因于超薄纳米片结构、良好的电荷转移动力学、高电导率和优异的本征催化活性的耦合效应。这种简单、经济的方法可能有利于制备其他高性能的MOF基OER催化剂。
Recently, metal–organic framework (MOF) manifests an outstanding oxygen evolution reaction (OER) catalytic activity due to its structural diversity, highly ordered pore structure and abundant active sites. Herein, through a facile one-step solvothermal method, iron-doped nickel MOF nanosheets in situ grown on conductive nickel foam (Fe-Ni MOF NSs/NF) were conveniently fabricated as efficient OER catalyst, using only one kind of metal salt precursor. The ultrathin 2-dimensional sheet structure possesses highly exposed surface area and numerous metal sites which are beneficial to electrocatalytic OER performance. The Fe-Ni MOF NSs/NF presents superior OER activity in 1 M KOH, requiring overpotentials of 258 and 270 mV to deliver the current density of 50 and 100 mA cm−2, along with a low Tafel slope of 40.8 mV dec−1. Moreover, the durability of the Fe-Ni MOF NSs/NF catalyst is also outstanding, exhibiting only minor chronoamperometric decay after 24 h continuous operation at 50 mA cm−2. The excellent OER activity could be ascribed to the coupling effects of ultrathin-nanosheet structure, favorable charge transfer kinetics, high conductivity and excellent intrinsic catalytic activity. This facile and economical strategy might be advantageous to prepare other high-performance MOF-based OER catalysts.
登录
查看更多内容
影响因子：
--
作者：
Xiaojia Zhao;Pradip Pachfule;Shuang Li;J. Simke;Johannes Schmidt;Arne Thomas
通讯作者：
Xiaojia Zhao;Pradip Pachfule;Shuang Li;J. Simke;Johannes Schmidt;Arne Thomas
影响因子：
22
作者：
Li, Jiantao;Huang, Wenzhong;Mai, Liqiang
通讯作者：
Mai, Liqiang
用于增强水氧化催化的混合二维双金属有机框架
影响因子：
19
作者：
Rui, Kun;Zhao, Guoqiang;Dou, Shi Xue
通讯作者：
Dou, Shi Xue
多级泡沫（如三金属）的环境快速合成和活性位点破译——有机框架纳米结构作为高效析氧电催化的平台
影响因子：
29.4
作者：
Qian, Qizhu;Li, Yapeng;Zhang, Genqiang
通讯作者：
Zhang, Genqiang
影响因子：
15
作者：
Burke, Michaela S.;Kast, Matthew G.;Boettcher, Shannon W.
通讯作者：
Boettcher, Shannon W.