Morphology and Active-Site Engineering for Stable Round-Trip Efficiency Li-O2 Batteries: A Search for the Most Active Catalytic Site in Co3O4

被引：105

作者：

Song, Kyeongse ^{[1
]}

Cho, Eunbi ^{[1
]}

Kang, Yong-Mook ^{[1
]}

机构：

[1] Dongguk Univ, Dept Energy & Mat Engn, Seoul 100715, South Korea

来源：

ACS CATALYSIS | 2015年 / 5卷 / 09期

基金：

新加坡国家研究基金会;

关键词：

lithium-oxygen batteries; catalysts; cobalt oxides; electrochemistry; lithium peroxides; LITHIUM-AIR BATTERIES; OXYGEN REDUCTION; HIGH-CAPACITY; MESOPOROUS CO3O4; RATE CAPABILITY; CRYSTAL PLANE; CO OXIDATION; METAL-OXIDES; NANOPARTICLES; ELECTRODE;

D O I：

10.1021/acscatal.5b01196

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

For the purpose of finding the catalytic active site for the oxygen reduction reaction (ORR) and the oxygen evolution reaction (OER) in the crystal structure of Co3O4, a {100} faceted Co3O4 cube enclosed by only a Co2+ site and a {112} faceted Co3O4 plate also exposing a Co3+ site was adopted as a catalyst for lithium-oxygen (Li-O-2) batteries. Thus, we found that the Co3+ site plays the crucial role of determining the adsorption properties of reactants, enabling high round-trip efficiency and cyclic stability, as well as the morphology of discharge products such as Li2O2.

引用

页码：5116 / 5122

页数：7

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