过电位
电催化剂
双功能
分解水
析氧
催化作用
化学工程
材料科学
双功能催化剂
电解质
无机化学
化学
电极
电化学
物理化学
有机化学
光催化
工程类
作者
Wenjing Li,Yu Deng,Lijun Luo,Yeshuang Du,Xiaohong Cheng,Qi Wu
标识
DOI:10.1016/j.jcis.2023.02.071
摘要
The development of inexpensive, high efficiency electrocatalysts is a major challenge for electrolytic water to hydrogen production. Herein, an efficient porous nanoblock catalyst N-doped Fe2O3/NiTe2 heterojunction for overall water splitting is reported. Notably, the obtained 3D self-supported catalysts exhibit good hydrogen evolution. reaction (HER) activity and oxygen evolution reaction (OER) properties in alkaline solution (only 70 mV and 253 mV of overpotential are needed to provide 10 mA cm−2 current density, respectively). This is mainly due to the N-doped electronic structure optimized, the strong electronic interaction between Fe2O3 and NiTe2 that facilitates rapid electron transfer, the porous structure which allows the catalyst to have large surface area for effective gas release, and their synergistic effect. When used as a dual function catalyst with overall water splitting, it achieved a current density of 10 mA cm−2 under 1.54 V with good durability (at least 42 h). The present work provides a new methodology for the study of high-performance, low-cost, and corrosion-resistant bifunctional electrocatalysts.
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