Combination of Fe(II)-induced oxygen deficiency and metal doping strategy for construction of high efficiency water oxidation electrocatalysts under industrial-scale current density

被引：11

作者：

Chen, Xiang ^{[1
,2
]}

Li, Yongtao ^{[1
]}

Xing, Hanlu ^{[1
]}

Fei, Shunxin ^{[1
]}

Ma, Lianbo ^{[1
]}

Tu, Renyong ^{[3
]}

Huang, Aijian ^{[3
]}

Cheong, Weng-Chon ^{[3
]}

Liu, Qinggang ^{[3
]}

Ge, Rile ^{[4
]}

Liu, Shoujie ^{[6
]}

Liu, Dongming ^{[1
]}

Wei, Xianwen ^{[1
]}

Wu, Konglin ^{[1
,2
]}

Chen, Xin ^{[5
]}

Chen, Chen ^{[3
]}

机构：

[1] Anhui Univ Technol, Sch Mat Sci & Engn, Key Lab Green Fabricat & Surface Technol Adv Met, Minist Educ, Maanshan 243002, Peoples R China

[2] Anhui Univ Technol, Inst Clean Energy & Adv Nanocatalysis iClean, Sch Chem & Chem Engn, Maanshan 243002, Peoples R China

[3] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

[4] Chinese Acad Sci, Dalian Inst Chem Phys, Ctr Adv Mossbauer Spect, Dalian 116023, Peoples R China

[5] Univ Sci & Technol Beijing, Inst Solid State Chem, Beijing Adv Innovat Ctr Mat Genome Engn, Beijing 100083, Peoples R China

[6] Chem & Chem Engn Guangdong Lab, Shantou 515063, Peoples R China

来源：

CHEMICAL ENGINEERING JOURNAL | 2022年 / 435卷

基金：

中国国家自然科学基金;

关键词：

beta-FeOOH; Oxygen vacancy; Water oxidation; Oxygen evolution reaction; Electrodeposition; TOTAL-ENERGY CALCULATIONS; EVOLUTION; IRON; NANOSHEETS; OXIDE; OXYHYDROXIDE; VACANCIES; NANOWIRES; HYDROXIDE; CATALYST;

D O I：

10.1016/j.cej.2022.135048

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Abundant oxygen-vacancy and heteroatomic doping have been demonstrated to be beneficial to obtain high electrocatalytic performance for the oxygen evolution reaction (OER). In present work, a simple cathodic electrodeposition (CED) method based on Fe(II)-induced oxygen deficiency-metal doping ((FeIOD)-I-II/MD) strategy was developed to prepare robust water oxidation electrocatalysts. By using Fe2+ ions as the iron precursors, a series of Ni-doped beta-FeOOH (Ni/beta-FeOOH-x) on the carbon cloth (Ni/beta-FeOOH-x/CC, here, the x is the molar percent of Fe2+ in the total ferric salt; x = 0, 0.2, 0.5, 0.8 or 1) electrocatalysts with different oxygen vacancy content were prepared. Relevant characterizations indicated that the oxygen-vacancy ratio and electrocatalytic OER performances of Ni/beta-FeOOH-1/CC electrocatalysts prepared by using Fe2+ ions as the iron precursor is significantly higher than that of Fe3+. Fascinatingly, the Ni/beta-FeOOH-1/CC with massive oxygen vacancies shows an ultralow overpotential of 192 mV at the current density of 10 mA.cm(-2). Furthermore, the Ni/beta-FeOOH-1/CC catalyst can also be directly driven by a dry cell or solar cell. More importantly, the Ni/beta-FeOOH-1/CC catalyst prepared by CED method based on this (FeIOD)-I-II/MD strategy can realize water oxidation at the industrial current density, and it shows a potential industrial application value in the future.

引用

页数：10

共 75 条

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