Oxygen-enriched carbon nanotubes as a bifunctional catalyst promote the oxygen reduction/evolution reactions in li-o(2 )batteries
文献类型：期刊论文
| 作者 | Qin, Lei1; Lv, Wei1; Wei, Wei2; Kang, Feiyu1; Zhai, Dengyun1; Yang, Quan-Hong3 |
| 刊名 | Carbon
 |
| 出版日期 | 2019 |
| 卷号 | 141页码:561-567 |
| ISSN号 | 0008-6223 |
| DOI | 10.1016/j.carbon.2018.10.025 |
| 通讯作者 | Zhai, dengyun(zhaidy0404@sz.tsinghua.edu.cn) ; Yang, quan-hong(qhyangcn@tju.edu.cn) |
| 英文摘要 | The aprotic lithium-oxygen (li-o-2) batteries based on carbon-based oxygen cathodes usually suffer from low round-trip efficiency. here we adopt oxygen-enriched carbon nanotubes (cnts) by acid etching treatment as the cathode, in which a low voltage plateau at similar to 3.5 v during charge is exhibited and the initial round-trip efficiency is increased from 69.9% to 76.0%. an optimized integration of electrocatalytic property and electrical conductivity is crucial for the oxidized cnts cathode to enhance the capacity and cycling performance. in particular, the surface oxygen groups can facilitate the electrocatalysis of o-2 with the enhanced oxygen reduction reaction activity and induce defective lithium peroxide (li-o-2 ) formation due to their preferential adsorption of o-2 on the oxidized cnts. compared to the high crystalline li-o-2 toroids, the defective li-o-2 with poor crystallinity could be decomposed at a lower charge potential, contributing to the enhanced round-trip efficiency of li-o(2 )batteries. (c) 2018 elsevier ltd. all rights reserved. |
| WOS关键词 | FUNCTIONAL-GROUPS ; LITHIUM ; GRAPHENE ; PERFORMANCE ; REDUCTION ; BATTERY ; LI2O2 ; ELECTRODES ; CATHODE |
| WOS研究方向 | Chemistry ; Materials Science |
| WOS类目 | Chemistry, Physical ; Materials Science, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000450312600058 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2373028 |
| 专题 | 大连化学物理研究所 |
| 通讯作者 | Zhai, Dengyun; Yang, Quan-Hong |
| 作者单位 | 1.Tsinghua Univ, Shenzhen Key Lab Graphene Based Mat, Engn Lab Functionalized Carbon Mat, Grad Sch Shenzhen, Shenzhen 518055, Peoples R China 2.Chinese Acad Sci, Div Fuel Cell & Battery, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, Dalian 116023, Peoples R China 3.Tianjin Univ, Nanoyang Grp, State Key Lab Chem Engn, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qin, Lei,Lv, Wei,Wei, Wei,et al. Oxygen-enriched carbon nanotubes as a bifunctional catalyst promote the oxygen reduction/evolution reactions in li-o(2 )batteries[J]. Carbon,2019,141:561-567. |
| APA | Qin, Lei,Lv, Wei,Wei, Wei,Kang, Feiyu,Zhai, Dengyun,&Yang, Quan-Hong.(2019).Oxygen-enriched carbon nanotubes as a bifunctional catalyst promote the oxygen reduction/evolution reactions in li-o(2 )batteries.Carbon,141,561-567. |
| MLA | Qin, Lei,et al."Oxygen-enriched carbon nanotubes as a bifunctional catalyst promote the oxygen reduction/evolution reactions in li-o(2 )batteries".Carbon 141(2019):561-567. |
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来源：大连化学物理研究所
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