Electrodeposition of Metal-Free Polyaniline Electrocatalyst for Efficient Oxygen Evolution in Acid

被引：5

作者：

Xu, Meng ^{[1
]}

Gao, Wenluan ^{[1
]}

Zhao, Rong ^{[1
]}

Sun, Jiuyi ^{[1
]}

Han, Yunxi ^{[1
]}

Niu, Xiaopo ^{[1
]}

Xu, Zhihong ^{[1
]}

Qin, Yue ^{[1
]}

Wang, Qingfa ^{[1
,2
,3
]}

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, Key Lab Green Chem Technol, Minist Educ, Tianjin 300072, Peoples R China

[2] Tianjin Univ, Sch Chem Engn & Technol, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin 300072, Peoples R China

[3] Tianjin Univ, Zhejiang Inst, Ningbo 315201, Peoples R China

来源：

CHEMELECTROCHEM | 2022年 / 9卷 / 23期

基金：

中国国家自然科学基金;

关键词：

Active sites; Conducting polymers; Metal-free; Oxygen revolution reaction; Polyaniline; GRAPHENE/POLYANILINE COMPOSITE FILM; SOLID-SOLUTION; NANOPARTICLES; PERFORMANCE; NANOSHEETS; OXIDATION; GRAPHENE; NITROGEN;

D O I：

10.1002/celc.202200901

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Developing efficient and competitive electrocatalysts for the oxygen evolution reaction (OER) in acid is a great challenge for hydrogen production. Compared with metal catalysts, metal-free catalysts are more environmentally friendly and cheaper. Herein, we present a novel non-metallic self-supporting polyaniline catalyst (PANI3/CFP) synthesized by electrodeposition for efficient water oxidation. Benefiting from the three-dimensional network structure, excellent conductivity, and large number of nitrogen functional groups, PANI3/CFP exhibits high activity towards OER. At a current density of 10 mA cm(-2), PANI3/CFP delivers a low overpotential of 204 mV in 0.1 m HClO4, much lower than commercial Ir/C and previously reported acidic OER catalysts. Besides, the turnover frequency (TOF) value of PANI3/CFP reaches 0.0456 s(-1) at 1.5 V versus the reversible hydrogen electrode (vs. RHE). Analysis of structure and electrocatalytic performances reveal that =N- species in polyaniline are the main active sites for acidic OER. This work provides a unique strategy for the design of non-metallic acidic OER catalysts.

引用

页数：7

共 58 条

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