Citation: Le-Heng HUANG, Gao CHENG, Ying-Xia ZHAO, Qi-Xing XIE, Yue SUN, Shi-Chang TANG, Ming SUN, Lin YU. Crystalline Form Controlled Synthesis of MnO₂ Nanoarrays for Electrocatalytic Oxygen Evolution Performance[J]. Chinese Journal of Inorganic Chemistry, ;2022, 38(2): 333-343. doi: 10.11862/CJIC.2022.030 shu

Crystalline Form Controlled Synthesis of MnO₂ Nanoarrays for Electrocatalytic Oxygen Evolution Performance

Le-Heng HUANG ^{1, #} ,
Gao CHENG ^{1, 2, 3, #} ,
Ying-Xia ZHAO ¹ ,
Qi-Xing XIE ¹ ,
Yue SUN ¹ ,
Shi-Chang TANG ¹ ,
Ming SUN ^{1, 2, 3} ,
Lin YU ^{1, 2, 3,,}

1.
Key Laboratory of Clean Chemistry Technology of Guangdong Regular Higher Education, School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
2.
Guangdong Key Laboratory of Plant Resources Biorefining, School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
3.
Guangzhou Key Laboratory of Clean Transportation Energy Chemistry, School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China

Corresponding author: Lin YU, gych@gdut.edu.cn
Received Date: 29 August 2021
Revised Date: 7 December 2021

Figures(8)

Two kinds of MnO₂ nanoarrays, including α-MnO₂ nanowires and δ-MnO₂ nanosheets, were synthesized on carbon fiber paper (CFP) via the one-step hydrothermal method by changing the temperature and the addition of sulfuric acid, respectively. Moreover, the oxygen evolution reaction (OER) properties for the MnO₂ nanoarrays were studied. The results showed that the performance of α-MnO₂ nanowires outperformed δ-MnO₂ nanosheets in alkaline medium and the overpotential of α-MnO₂ was 444 mV under 10 mA·cm^-2 current density (the overpotential of δ-MnO₂ was 522 mV). According to the analysis of X-ray photoelectron spectroscopy, the higher content of Mn³⁺ and more abundant oxygen vacancies on the surface are the reasons for the higher catalytic activity of α-MnO₂ nanowires.
- manganese dioxide,
- nanoarray,
- crystalline form,
- oxygen evolution reaction,
- electrocatalysis
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Crystalline Form Controlled Synthesis of MnO2 Nanoarrays for Electrocatalytic Oxygen Evolution Performance

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通讯作者: 陈斌, bchen63@163.com

Crystalline Form Controlled Synthesis of MnO₂ Nanoarrays for Electrocatalytic Oxygen Evolution Performance