Mesoporous carbon nitride loaded with Pt nanoparticles as a bifunctional air electrode for rechargeable lithium-air battery

被引：73

作者：

Lu, Yan ^{[1
]}

Wen, Zhaoyin ^{[1
]}

Jin, Jun ^{[1
]}

Cui, Yanming ^{[1
]}

Wu, Meifen ^{[1
]}

Sun, Shijiao ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, CAS Key Lab Mat Energy Convers, Shanghai 200050, Peoples R China

来源：

JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2012年 / 16卷 / 05期

关键词：

Mesoporous carbon nitride; Pt; Air electrode; Lithium-air battery; O-2;

D O I：

10.1007/s10008-012-1640-8

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A composite comprised of oxygen reduction reaction (ORR) catalyst and oxygen evolution reaction (OER) catalyst was designed and applied as a bifunctional electrocatalyst for the air electrode of the lithium-air battery. The ordered mesoporous carbon nitride (MCN) prepared by a nano hard-templating approach displayed a surface area as high as 648 m(2) g(-1) and a large pore volume of 0.7 cm(3) g(-1) and acted as both the ORR catalyst and the support for the in situ-formed OER catalyst of Pt particles with a diameter of 3-4 nm. The electrochemical performances of the electrode were examined in a solid-state lithium-air cell structured as Li/LATP-based electrolyte/cathode, which demonstrated a higher round-trip efficiency and lower overpotential compared with the Pt@AB and MCN electrodes. The combination of the OER and ORR catalysts is proved as an effective way to improve the performance of lithium-air batteries.

引用

页码：1863 / 1868

页数：6

共 22 条

[1] A polymer electrolyte-based rechargeable lithium/oxygen battery [J].