NiFe layered double hydroxide as an Efficient Bifunctional Catalyst for Electrosynthesis of Hydrogen Peroxide and Oxygen
NiFe layered double hydroxide as an Efficient Bifunctional Catalyst for Electrosynthesis of Hydrogen Peroxide and Oxygen
复制标题
NiFe层状双氢氧化物作为过氧化氢和氧气电合成的高效双功能催化剂
DOI：
10.1016/j.ijhydene.2022.08.250
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发表时间：
2022
影响因子：
7.2
通讯作者：
Jue Hu
中科院分区：
文献类型：
--
作者：
Yue Zhang;Chengxu Zhang;Yunjie Mei;Thiquynhxuan Le;Haodong Shao;Hao Jian;Yuebin Feng;Jue Hu
Two electron oxygen reduction reaction to produce hydrogen peroxide (H2O2) is a promising alternative technique to the multistep and high energy consumption anthraquinone process. Herein, Ni–Fe layered double hydroxide (NiFe-LDH) has been firstly demonstrated as an efficient bifunctional catalyst to prepare H2O2by electrochemical oxygen reduction (2e−ORR) and oxygen evolution reaction (OER). Significantly, the NiFe-LDH catalyst possesses a high faraday efficiency of 88.75% for H2O2preparation in alkaline media. Moreover, the NiFe-LDH catalyst exhibits excellent OER electrocatalytic property with small overpotential of 210 mV at 10 mA cm−2and high stability in 1 M KOH solution. On this basis, a new reactor has been designed to electrolyze oxygen and generate hydrogen peroxide. Under the ultra-low cell voltage of 1 V, the H2O2yield reaches to 47.62 mmol gcat−1h−1. In order to evaluate the application potential of the bifunctional NiFe-LDH catalyst for H2O2preparation, a 1.5 V dry battery has been used as the power supply, and the output of H2O2reaches to 83.90 mmol gcat−1h−1. The excellent electrocatalytic properties of 2e−ORR and OER make NiFe-LDH a promising bifunctional electrocatalyst for future commercialization. Moreover, the well-designed 2e−ORR-OER reactor provides a new strategy for portable production of H2O2.
