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Low charge overpotential of lithium-oxygen batteries with metallic Co encapsulated in single-layer graphene shell as the catalyst
Tu, Yunchuan1,2,3; Li, Haobo1,3; Deng, Dehui1,2; Xiao, Jianping1; Cui, Xiaoju1,2,3; Ding, Ding4; Chen, Mingshu4; Sao, Xinhe1
关键词Charge Overpotential Electrocatalysis Electron Transfer Lithium-oxygen Batteries Non-precious Metals
刊名NANO ENERGY
2016-12-01
DOI10.1016/j.nanoen.2016.08.066
30页:877-884
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
研究领域[WOS]Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
关键词[WOS]NONAQUEOUS LI-O-2 BATTERIES ; N-DOPED GRAPHENE ; AIR BATTERIES ; NANOTUBE COMPOSITE ; REDUCTION REACTION ; CATHODE CATALYSTS ; CARBON ELECTRODE ; NANOPARTICLES ; ELECTROCATALYSTS ; PERFORMANCE
英文摘要Rechargeable lithium-oxygen (Li-O-2) battery has triggered tremendous attention as a promising candidate power source for portable electronics and light vehicles. Until now, a critical scientific challenge facing Li-O-2 battery is the high charge overpotential due to the sluggish oxygen evolution reaction (OER) on the oxygen electrode, which results in low energy efficiency and poor cyclability. Here, we demonstrated that nitrogen-doped single layer graphene shell encapsulating non-precious metal Co can be used as a highly efficient catalyst for Li-O-2 batteries. The catalyst showed significantly enhanced OER catalytic activity, with a charge overpotential of 0.58 V, which was remarkably lower compared with the corresponding N-free graphene encapsulating metal, metal oxide and metal-free carbon materials. DFT calculations revealed that the nitrogen dopants and enclosed metal clusters can synergistically modulate the electronic properties of the graphene surface, resulting in a dramatic reduction of the overpotentials. This study provides the possibility of the rational non-precious metal electrocatalysts designing for Li-O-2 batteries. (C) 2016 Published by Elsevier Ltd.
语种英语
WOS记录号WOS:000390636100101
引用统计
被引频次:18[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/151829
专题中国科学院大连化学物理研究所
作者单位1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, iChEM, Zhongshan Rd 457, Dalian 116023, Peoples R China
2.Xiamen Univ, Coll Chem & Chem Engn, Collaborat Innovat Ctr Chem Energy Mat, Xiamen 361005, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
4.Xiamen Univ, Coll Chem & Chem Engn, State Key Lab Phys Chem Solid Surfaces, Xiamen 361005, Peoples R China
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Tu, Yunchuan,Li, Haobo,Deng, Dehui,et al. Low charge overpotential of lithium-oxygen batteries with metallic Co encapsulated in single-layer graphene shell as the catalyst[J]. NANO ENERGY,2016,30:877-884.
APA Tu, Yunchuan.,Li, Haobo.,Deng, Dehui.,Xiao, Jianping.,Cui, Xiaoju.,...&Sao, Xinhe.(2016).Low charge overpotential of lithium-oxygen batteries with metallic Co encapsulated in single-layer graphene shell as the catalyst.NANO ENERGY,30,877-884.
MLA Tu, Yunchuan,et al."Low charge overpotential of lithium-oxygen batteries with metallic Co encapsulated in single-layer graphene shell as the catalyst".NANO ENERGY 30(2016):877-884.
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