Single-ion catalyst of Ni2+ anchored in the interlayer space of layered MnO2 for electro-oxidation of ethanol in alkaline electrolyte

被引：15

作者：

Nakayama, Masaharu ^{[1
,2
]}

Suzuki, Kanon ^{[1
]}

Fujii, Kenta ^{[1
]}

机构：

[1] Grad Sch Sci & Technol Innovat, Appl Chem, Sendai, Miyagi, Japan

[2] Blue Energy Ctr SGE Technol BEST, 2-16-1 Tokiwadai, Ube, Yamaguchi 7558611, Japan

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2019年 / 105卷

基金：

日本学术振兴会;

关键词：

Ethanol oxidation; Manganese dioxide; Buserite; Single ion catalyst; MANGANESE OXIDES; OXIDATION; CARBON; ELECTRODEPOSITION; NANOPARTICLES; GRAPHENE; COBALT;

D O I：

10.1016/j.elecom.2019.106492

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel catalyst design for electro-oxidation of ethanol is presented, which is featured with the existing state of the catalyst. Specifically, Ni2+ ions were anchored in the interstitial site of a redox active support, layered manganese dioxide (MnO2), in which the Ni2+ ions can be oxidized in situ to their active state. The MnO2-supported Ni ions could behave as a "single-ion electrocatalyst" toward the ethanol oxidation reaction (EOR) between MnO2 layers in an alkaline solution, leading to much higher utilization efficiency than those in a bulk counterpart. Namely, a mass activity of 4.30 kA g(-Ni)(-1) was achieved with the isolated Ni ions, while that of alpha-Ni (OH)(2) thin film was 0.93 kA g(-Ni)(-1).

引用

页数：5

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