Tailoring deposition and morphology of discharge products towards high-rate and long-life lithium-oxygen batteries

被引：543

作者：

Xu, Ji-Jing ^{[1
]}

Wang, Zhong-Li ^{[1
]}

Xu, Dan ^{[1
]}

Zhang, Lei-Lei ^{[1
,2
]}

Zhang, Xin-Bo ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Rare Earth Resource Utilizat, Changchun 130022, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

NATURE COMMUNICATIONS | 2013年 / 4卷

基金：

中国国家自然科学基金;

关键词：

RECHARGEABLE LI-O-2 BATTERIES; TRANSMISSION ELECTRON-MICROSCOPY; AIR BATTERIES; CARBON ELECTRODE; CATALYST; ELECTROCHEMISTRY; ELECTROCATALYSIS; REDUCTION; OXIDATION; GRAPHENE;

D O I：

10.1038/ncomms3438

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Lithium-oxygen batteries are an attractive technology for electrical energy storage because of their exceptionally high-energy density; however, battery applications still suffer from low rate capability, poor cycle stability and a shortage of stable electrolytes. Here we report design and synthesis of a free-standing honeycomb-like palladium-modified hollow spherical carbon deposited onto carbon paper, as a cathode for a lithium-oxygen battery. The battery is capable of operation with high-rate (5,900 mAh g(-1) at a current density of 1.5 Ag-1) and long-term (100 cycles at a current density of 300mA g(-1) and a specific capacity limit of 1,000 mAh g(-1)). These properties are explained by the tailored deposition and morphology of the discharge products as well as the alleviated electrolyte decomposition compared with the conventional carbon cathodes. The encouraging performance also offers hope to design more advanced cathode architectures for lithium-oxygen batteries.

引用

页数：10

共 46 条

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