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 | |
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) | |
刊名 | ACS Applied Materials and Interfaces |
2017 | |
卷号 | 9期号:17页码:14749-14757 |
关键词 | manganese dioxide polymerized ionic liquids carbon nanotubes oxygen-containing groups Li-O2 batteries |
ISSN号 | 1944-8244 |
通讯作者 | 邓友全 |
英文摘要 | 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. |
学科主题 | 物理化学与绿色催化 |
收录类别 | SCI |
资助信息 | the National Natural Science Foundation of China (Grants 21403259;21373247) |
语种 | 英语 |
WOS记录号 | WOS:000400802700022 |
内容类型 | 期刊论文 |
源URL | [http://210.77.64.217/handle/362003/21906] |
专题 | 兰州化学物理研究所_OSSO国家重点实验室 兰州化学物理研究所_固体润滑国家重点实验室 |
通讯作者 | Deng YQ(邓友全) |
作者单位 | 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 |
推荐引用方式 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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