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题名: Interconnected Phosphorus and Nitrogen Codoped Porous Exfoliated Carbon Nanosheets for High-Rate Supercapacitors
作者: Jin, Jutao1;  Qiao, Xiaochang1;  Zhou, Feng2;  Wu, Zhong-Shuai2;  Cui, Lifeng1;  Fan, Hongbo1
关键词: phosphorus and nitrogen codoped ;  exfoliated carbon nanosheets ;  high rate ;  supercapacitor ;  cycle stability
刊名: ACS APPLIED MATERIALS & INTERFACES
发表日期: 2017-05-24
DOI: 10.1021/acsami.7b00617
卷: 9, 页:17318-17326
收录类别: SCI
文章类型: Article
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
英文摘要: Carbon-based supercapacitors have high power density and long cycle life; however, they are known to suffer from problems related to low energy density and high inner resistance. Here, we report a novel hierarchically porous functional carbon that is made up of interconnected exfoliated carbon nanosheets with thickness of a few nanometers. Notably, these porous carbon nanosheets are doped with abundant nitrogen (N) dopants in the basal plane and phosphorus (P) functional groups at the edge of the graphene lattice. The specific surface chemistry and pore structure of the synthesized sample, combined with its large specific surface area, make it a high-performance active material for supercapacitor electrode. The obtained supercapacitor made with the optimized sample showed a high specific capacitance (265 F g(-1) at 0.5 A g(-1)) as well as long-term stability (94% capacitance retention after 5000 cycles). Particularly, the enhanced electrochemical characteristics were maintained even at high electrode mass loading (time constant (tau(0)) is 1.10 s for an electrode mass loading of 12.38 mg cm(-2) compared to 1.61 s for a mass loading of 4.17 mg cm(-2) for commercial activated carbon), which is important for a high packing factor of the capacitor.
关键词[WOS]: HIGH-PERFORMANCE SUPERCAPACITORS ;  SOLID-STATE SUPERCAPACITORS ;  DOPED GRAPHENE ;  HIGH-ENERGY ;  DENSITY SUPERCAPACITORS ;  ELECTRODE MATERIALS ;  SURFACE-CHEMISTRY ;  ACID ;  CAPACITANCE ;  ULTRACAPACITORS
语种: 英语
WOS记录号: WOS:000402498600063
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/152219
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Dongguan Univ Technol, Sch Environm & Architecture, Songshan Lake High Tech Dev, Daxue Rd 1, Dongguan 523808, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, 457 Zhongshan Rd, Dalian 116023, Peoples R China

Recommended Citation:
Jin, Jutao,Qiao, Xiaochang,Zhou, Feng,et al. Interconnected Phosphorus and Nitrogen Codoped Porous Exfoliated Carbon Nanosheets for High-Rate Supercapacitors[J]. ACS APPLIED MATERIALS & INTERFACES,2017,9:17318-17326.
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