The controlled growth of porous delta-MnO2 nanosheets on carbon fibers as a bi-functional catalyst for rechargeable lithium-oxygen batteries | |
Department | 清洁能源化学与材料实验室 |
Zhang P(张鹏)1,3; He M(贺睦)2,3; Xu S(许珊)2; Yan XB(阎兴斌)1; Yan XB(阎兴斌) | |
The second department | osso国家重点实验室;固体润滑国家重点实验室 |
2015 | |
Source Publication | Journal of Materials Chemistry A |
ISSN | 2050-7488 |
Volume | 3Issue:20Pages:10811-10818 |
Abstract | The electrochemical performance of lithium–oxygen (Li–O2) batteries greatly depends on the pore structure and effectiveness of the catalysts used in the oxygen cathode. Herein, porous δ-MnO2/carbon composite fibers (δ-MnO2/CCFs), where the interconnected and ultrathin δ-MnO2 nanosheets are uniformly coated on electrospun carbon fibers (CFs), have been successfully fabricated via a facile liquid deposition. This unique structure ensures the high utilization of the catalytic sites, sufficient spaces to accommodate the discharge products, and rapid diffusion of lithium ions and oxygen within the porous catalyst, thus providing suitable characteristics of an electrocatalyst for high-performance Li–O2 batteries. As a consequence, suppressed overpotentials, especially oxygen evolution reaction overpotential and desirable rate capability are achieved by the Li–O2 cells with these δ-MnO2/CCFs as electrocatalysts. In addition, the effectiveness of the catalyst and its critical role during the electrochemical growth of the discharge product (Li2O2) are further analyzed. |
Subject Area | 材料科学与物理化学 |
DOI | 10.1039/c5ta00619h |
Funding Organization | the Top Hundred Talents Program of the Chinese Academy of Sciences;the National Defense Basic Research Program of China (B1320133001);the Natural Science Foundation of China (no. 21303234) |
Indexed By | SCI |
If | 8.262 |
Language | 英语 |
Funding Project | 低维材料与化学储能课题组;多相选择氧化课题组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/18354 |
Collection | 清洁能源化学与材料实验室 固体润滑国家重点实验室(LSL) 羰基合成与选择氧化国家重点实验室(OSSO) |
Corresponding Author | Yan XB(阎兴斌) |
Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Lab Clean Energy Chem & Mat, Lanzhou 730000, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
Recommended Citation GB/T 7714 | Zhang P,He M,Xu S,et al. The controlled growth of porous delta-MnO2 nanosheets on carbon fibers as a bi-functional catalyst for rechargeable lithium-oxygen batteries[J]. Journal of Materials Chemistry A,2015,3(20):10811-10818. |
APA | Zhang P,He M,Xu S,Yan XB,&阎兴斌.(2015).The controlled growth of porous delta-MnO2 nanosheets on carbon fibers as a bi-functional catalyst for rechargeable lithium-oxygen batteries.Journal of Materials Chemistry A,3(20),10811-10818. |
MLA | Zhang P,et al."The controlled growth of porous delta-MnO2 nanosheets on carbon fibers as a bi-functional catalyst for rechargeable lithium-oxygen batteries".Journal of Materials Chemistry A 3.20(2015):10811-10818. |
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