Hierarchical Micron-Sized Mesoporous/Macroporous Graphene with Well-Tuned Surface Oxygen Chemistry for High Capacity and Cycling Stability Li-O-2 Battery
文献类型：期刊论文
| 作者 | Zhou, Wei1,2; Zhang, Hongzhang1; Nie, Hongjiao1,2; Ma, Yiwen1; Zhang, Yining1; Zhang, Huamin1 |
| 刊名 | acs applied materials & interfaces
 |
| 出版日期 | 2015-02-11 |
| 卷号 | 7期号:5页码:3389-3397 |
| 关键词 | Li-O-2 battery graphene hierearchical structure oxygen functional group oxygen electroe |
| 英文摘要 | nonaqueous lio2 battery is recognized as one of the most promising energy storage devices for electric vehicles due to its super-high energy density. at present, carbon or catalyst-supporting carbon materials are widely used for cathode materials of lio2 battery. however, the unique electrode reaction and complex side reactions lead to numerous hurdles that have to be overcome. the pore blocking caused by the solid products and the byproducts generated from the side reactions severely limit the capacity performance and cycling stability. thus, there is a great need to develop carbon materials with optimized pore structure and tunable surface chemistry to meet the special requirement of lio2 battery. here, we propose a strategy of vacuum-promoted thermal expansion to fabricate one micron-sized graphene matrix with a hierarchical meso-/macroporous structure, combining with a following deoxygenation treatment to adjust the surface chemistry by reducing the amount of oxygen and selectively removing partial unstable groups. the as-made graphene demonstrates dramatically tailored pore characteristics and a well-tuned surface chemical environment. when applied in lio2 battery as cathode, it exhibits an outstanding capacity up to 19 800 ma h g(-1) and is capable of enduring over 50 cycles with a curtaining capacity of 1000 ma h g(-1) at a current density of 1000 ma g(-1). this will provide a novel pathway for the design of cathodes for lio2 battery. |
| WOS标题词 | science & technology ; technology |
| 类目[WOS] | nanoscience & nanotechnology ; materials science, multidisciplinary |
| 研究领域[WOS] | science & technology - other topics ; materials science |
| 关键词[WOS] | honeycomb-like carbon ; x-ray photoelectron ; lithium-air battery ; raman spectroscopy ; free cathode ; electrode ; nanosheets ; performance ; composite ; oxide |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000349580800047 |
| 公开日期 | 2016-05-09 |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/146011]  |
| 专题 | 大连化学物理研究所_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, Dalian Natl Lab Clean Energy, Div Energy Storage, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, Wei,Zhang, Hongzhang,Nie, Hongjiao,et al. Hierarchical Micron-Sized Mesoporous/Macroporous Graphene with Well-Tuned Surface Oxygen Chemistry for High Capacity and Cycling Stability Li-O-2 Battery[J]. acs applied materials & interfaces,2015,7(5):3389-3397. |
| APA | Zhou, Wei,Zhang, Hongzhang,Nie, Hongjiao,Ma, Yiwen,Zhang, Yining,&Zhang, Huamin.(2015).Hierarchical Micron-Sized Mesoporous/Macroporous Graphene with Well-Tuned Surface Oxygen Chemistry for High Capacity and Cycling Stability Li-O-2 Battery.acs applied materials & interfaces,7(5),3389-3397. |
| MLA | Zhou, Wei,et al."Hierarchical Micron-Sized Mesoporous/Macroporous Graphene with Well-Tuned Surface Oxygen Chemistry for High Capacity and Cycling Stability Li-O-2 Battery".acs applied materials & interfaces 7.5(2015):3389-3397. |
入库方式： OAI收割
来源：大连化学物理研究所
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