Preparation of Carbon Nanotubes/Manganese Dioxide Composite Catalyst with Fewer Oxygen-Containing Groups for Li-O-2 Batteries Using Polymerized Ionic Liquids as Sacrifice Agent | |
Department | OSSO国家重点实验室 |
Ni WP(倪文鹏)1,2; Liu SM(刘士民)1; Fei YQ(费玉清)1,2; He YD(何昱德)1; Ma XY(马祥元)1; Lu LJ(卢六斤)1; Deng YQ(邓友全)1; Deng YQ(邓友全) | |
The second department | 固体润滑国家重点实验室 |
2017 | |
Source Publication | ACS Applied Materials and Interfaces |
ISSN | 1944-8244 |
Volume | 9Issue:17Pages:14749-14757 |
Abstract | Considering the significant influence of oxygen-containing groups on the surface of carbon involved electrodes, a carbon nanotube (CNT)-based MnO2 composite catalyst was synthesized following a facile method while using polymerized ionic liquids (PIL) as sacrifice agent. Herein, the PIL (polymerized hydrophobic 1-vinyl-3-ethylimidazolium bis ((trifluoromethyl)sulfonyl)imide) wrapped CNTs were prepared. The composite was applied to support MnO2 by the treatment of KMnO4 solution, taking advantage of the reaction between PIL and KMnO4, which excludes or suppresses the oxidation of CNTs, and the as-synthesized material with fewer oxygen-containing groups acted as a cathode catalyst for Li-O2 batteries, directly avoiding the application of binders. The catalyst shows enhanced activity compared to that of the samples without PIL, as verified by the lower overpotential during discharging and charging (0.97 V at the current density of 100 mA g–1). Meanwhile, the performance parameters such as Coulombic efficiency and rate capability were also improved for the Li-O2 battery utilizing this catalyst. Further, the formation of confined Li2O2 particles could be responsible for the reduction of charge potential of Li-O2 batteries due to the synergy effect of the intrinsic catalytic activity of MnO2 and fewer oxygen functional groups on the catalyst surface. |
Keyword | Manganese Dioxide Polymerized Ionic Liquids Carbon Nanotubes Oxygen-containing Groups Li-o2 Batteries |
Subject Area | 物理化学与绿色催化 |
DOI | 10.1021/acsami.6b16531 |
Funding Organization | the National Natural Science Foundation of China (Grants 21403259;21373247) |
Indexed By | SCI |
If | 7.504 |
Language | 英语 |
Funding Project | 绿色催化研究组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/21906 |
Collection | 羰基合成与选择氧化国家重点实验室(OSSO) 固体润滑国家重点实验室(LSL) |
Corresponding Author | Deng YQ(邓友全) |
Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Ctr Green Chem & Catalysis,State Key Lab Solid Lu, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
Recommended Citation GB/T 7714 | Ni WP,Liu SM,Fei YQ,et al. Preparation of Carbon Nanotubes/Manganese Dioxide Composite Catalyst with Fewer Oxygen-Containing Groups for Li-O-2 Batteries Using Polymerized Ionic Liquids as Sacrifice Agent[J]. ACS Applied Materials and Interfaces,2017,9(17):14749-14757. |
APA | Ni WP.,Liu SM.,Fei YQ.,He YD.,Ma XY.,...&邓友全.(2017).Preparation of Carbon Nanotubes/Manganese Dioxide Composite Catalyst with Fewer Oxygen-Containing Groups for Li-O-2 Batteries Using Polymerized Ionic Liquids as Sacrifice Agent.ACS Applied Materials and Interfaces,9(17),14749-14757. |
MLA | Ni WP,et al."Preparation of Carbon Nanotubes/Manganese Dioxide Composite Catalyst with Fewer Oxygen-Containing Groups for Li-O-2 Batteries Using Polymerized Ionic Liquids as Sacrifice Agent".ACS Applied Materials and Interfaces 9.17(2017):14749-14757. |
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