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Hierarchical Nitrogen-Doped Graphene/Carbon Nanotube Composite Cathode for Lithium-Oxygen Batteries
Shu, Chaozhu; Li, Bo; Zhang, Bingsen; Su, Dangsheng; dssu@imr.ac.cn
2015
Source PublicationCHEMSUSCHEM
ISSN1864-5631
Volume8Issue:23Pages:3973-3976
AbstractThe lithium-oxygen (Li-O-2) battery is a very appealing candidate for advanced high energy applications owing to its exceptionally high specific energy. However, its poor energy efficiency, rate capability, and cyclability remain key barriers to its practical application. In this work, using a rationally designed cathode based on a bimodal mesoporous nitrogen-doped graphene/carbon nanotube (NGC) composite, we have developed a Li-O-2 battery demonstrating enhanced round-trip efficiency (ca. 85%) and excellent cyclability over 400cycles under a high current rate of 500mAg(-1). The excellent cyclability and rate capability are attributed to improved stability of the aggressive LiO2 intermediate on the nitrogen-doped carbon surface in addition to the favorable hierarchical architecture of NGC. These results demonstrate a valuable research direction to achieve highly stable and reversible Li-O-2 batteries through tuning the surface chemistry of the cathode in addition to finding a stable electrolyte solvent.
description.department[shu, chaozhu ; li, bo ; zhang, bingsen ; su, dangsheng] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, liaoning, peoples r china ; [shu, chaozhu] chengdu univ technol, coll mat & chem & chem engn, chengdu 610059, sichuan, peoples r china
KeywordCarbon Cathode Electrocatalysis Lithium-oxygen Batteries Nitrogen-doping
Funding OrganizationMOST [2011CBA00504]; NSFC of China [21133010, 51221264, 21261160487, 21473223, 21573255]; Chinese Academy of Sciences [XDA09030103]; Institute of Metal Research [Y3NBA211A1]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/74879
Collection中国科学院金属研究所
Corresponding Authordssu@imr.ac.cn
Recommended Citation
GB/T 7714
Shu, Chaozhu,Li, Bo,Zhang, Bingsen,et al. Hierarchical Nitrogen-Doped Graphene/Carbon Nanotube Composite Cathode for Lithium-Oxygen Batteries[J]. CHEMSUSCHEM,2015,8(23):3973-3976.
APA Shu, Chaozhu,Li, Bo,Zhang, Bingsen,Su, Dangsheng,&dssu@imr.ac.cn.(2015).Hierarchical Nitrogen-Doped Graphene/Carbon Nanotube Composite Cathode for Lithium-Oxygen Batteries.CHEMSUSCHEM,8(23),3973-3976.
MLA Shu, Chaozhu,et al."Hierarchical Nitrogen-Doped Graphene/Carbon Nanotube Composite Cathode for Lithium-Oxygen Batteries".CHEMSUSCHEM 8.23(2015):3973-3976.
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