The role of vacancies and defects in Na0.44MnO2 nanowire catalysts for lithium-oxygen batteries

被引：166

作者：

Lee, Jin-Hyon ^{[1
]}

Black, Robert ^{[1
]}

Popov, Guerman ^{[1
]}

Pomerantseva, Ekaterina ^{[1
]}

Nan, Feihong ^{[2
]}

Botton, Gianluigi A. ^{[2
]}

Nazar, Linda F. ^{[1
]}

机构：

[1] Univ Waterloo, Dept Chem, Waterloo, ON N2L 3G1, Canada

[2] McMaster Univ, Dept Mat Sci & Engn, Hamilton, ON L8S 4L8, Canada

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2012年 / 5卷 / 11期

基金：

加拿大自然科学与工程研究理事会;

关键词：

MANGANESE OXIDE; ELECTRODE; DECOMPOSITION; MECHANISM; SURFACES; LI2MNO3; SODIUM; AIR;

D O I：

10.1039/c2ee21543h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Na0.44MnO2 nanowires were acid leached in nitric acid, and dehydrated by heat treatment to induce controllable defect formation as monitored by high resolution TEM studies. The charge-discharge tests using these materials as catalysts (or "promoters'') in rechargeable lithium-oxygen batteries (in non-carbonate electrolytes) showed that a high defect concentration results in a doubling of the reversible energy storage capacity up to 11 000 mA h g(-1), and lowered overpotentials for oxygen evolution. The role of the defects/vacancies in determining oxygen reduction behavior is highlighted.

引用

页码：9558 / 9565

页数：8

共 28 条

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

Abraham, KM ;

Jiang, Z .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1996, 143 (01) :1-5

[2] Screening for Superoxide Reactivity in Li-O2 Batteries: Effect on Li2O2/LiOH Crystallization [J].

Black, Robert ;

Oh, Si Hyoung ;

Lee, Jin-Hyon ;

Yim, Taeeun ;

Adams, Brian ;

Nazar, Linda F. .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2012, 134 (06) :2902-2905

[3]

BROUGHTON DB, 1947, J AM CHEM SOC, V69, P741, DOI 10.1021/ja01196a003

[4] Lithium-air and lithium-sulfur batteries [J].

Bruce, Peter G. ;

Hardwick, Laurence J. ;

Abraham, K. M. .

MRS BULLETIN, 2011, 36 (07) :506-512

[5] Defect Chemistry and Catalytic Activity of Nanosized Co3O4 [J].

Casas-Cabanas, M. ;

Binotto, G. ;

Larcher, D. ;

Lecup, A. ;

Giordani, V. ;

Tarascon, J. -M. .

CHEMISTRY OF MATERIALS, 2009, 21 (09) :1939-1947

[6] Carbon-supported manganese oxide nanocatalysts for rechargeable lithium-air batteries [J].

Cheng, H. ;

Scott, K. .

JOURNAL OF POWER SOURCES, 2010, 195 (05) :1370-1374

[7] α-MnO2 nanowires:: A catalyst for the O2 electrode in rechargeable lithium batteries [J].

Debart, Aurelie ;

Paterson, Allan J. ;

Bao, Jianli ;

Bruce, Peter G. .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2008, 47 (24) :4521-4524

[8] An O2 cathode for rechargeable lithium batteries:: The effect of a catalyst [J].

Debart, Aurelie ;

Bao, Jianli ;

Armstrong, Graham ;

Bruce, Peter G. .

JOURNAL OF POWER SOURCES, 2007, 174 (02) :1177-1182

[9] Lithium insertion processes of orthorhombic NaxMnO2-based electrode materials [J].

Doeff, MM ;

Richardson, TJ ;

Kepley, L .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1996, 143 (08) :2507-2516

[10] A high-rate manganese oxide for rechargeable lithium battery applications [J].

Doeff, MM ;

Anapolsky, A ;

Edman, L ;

Richardson, TJ ;

De Jonghe, LC .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2001, 148 (03) :A230-A236

← 1 2 3 →