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作者:

Yang, Yang (Yang, Yang.) | Fan, Xiujun (Fan, Xiujun.) | Casillas, Gilberto (Casillas, Gilberto.) | Peng, Zhiwei (Peng, Zhiwei.) | Ruan, Gedeng (Ruan, Gedeng.) | Wang, Gunuk (Wang, Gunuk.) | Yacaman, Miguel Jose (Yacaman, Miguel Jose.) | Tour, James M. (Tour, James M..)

收录:

EI Scopus SCIE

摘要:

Three-dimensional self-organized nanoporous thin films integrated into a heterogeneous Fe2O3/Fe3C-graphene structure were fabricated using chemical vapor deposition. Few-layer graphene coated on the nanoporous thin film was used as a conductive passivation layer, and Fe3C was introduced to improve capacity retention and stability of the nanoporous layer. A possible interfacial lithium storage effect was anticipated to provide additional charge storage in the electrode. These nanoporous layers, when used as an anode in lithium-ion batteries, deliver greatly enhanced cyclability and rate capacity compared with pristine Fe2O3: a specific capacity of 356 mu Ah cm(-2) mu m(-1) (3560 mAh cm(-3) or similar to 1118 mAh g(-1)) obtained at a discharge current density of 50 mu A cm(-2) (similar to 0.17 C) with 88% retention after 100 cycles and 165 mu Ah cm(-2) mu m(-1) (1650 mAh cm(-3) or similar to 518 mAh g(-1)) obtained at a discharge current density of 1000 mu A cm(-2) (similar to 6.6 C) for 1000 cycles were achieved. Meanwhile an energy density of 294 mu Wh cm(-2) mu m(-1) (2.94 Wh cm(-3) or similar to 924 Wh kg(-1)) and power density of 584 mu W cm(-2) mu m(-1) (5.84 W cm(-3) or similar to 1834 W kg(-1)) were also obtained, which may make these thin film anodes promising as a power supply for micro- or even nanosized portable electronic devices.

关键词:

thin film nanoporous heterogeneous structure anode lithium-ion battery

作者机构:

  • [ 1 ] [Yang, Yang]Rice Univ, Dept Chem, Houston, TX 77005 USA
  • [ 2 ] [Fan, Xiujun]Rice Univ, Dept Chem, Houston, TX 77005 USA
  • [ 3 ] [Peng, Zhiwei]Rice Univ, Dept Chem, Houston, TX 77005 USA
  • [ 4 ] [Ruan, Gedeng]Rice Univ, Dept Chem, Houston, TX 77005 USA
  • [ 5 ] [Wang, Gunuk]Rice Univ, Dept Chem, Houston, TX 77005 USA
  • [ 6 ] [Tour, James M.]Rice Univ, Dept Chem, Houston, TX 77005 USA
  • [ 7 ] [Yang, Yang]Rice Univ, Smalley Inst Nanoscale Sci & Technol, Houston, TX 77005 USA
  • [ 8 ] [Fan, Xiujun]Rice Univ, Smalley Inst Nanoscale Sci & Technol, Houston, TX 77005 USA
  • [ 9 ] [Wang, Gunuk]Rice Univ, Smalley Inst Nanoscale Sci & Technol, Houston, TX 77005 USA
  • [ 10 ] [Tour, James M.]Rice Univ, Smalley Inst Nanoscale Sci & Technol, Houston, TX 77005 USA
  • [ 11 ] [Tour, James M.]Rice Univ, Dept Mat Sci & NanoEngn, Houston, TX 77005 USA
  • [ 12 ] [Casillas, Gilberto]Univ Texas San Antonio, Dept Phys & Astron, San Antonio, TX 78249 USA
  • [ 13 ] [Yacaman, Miguel Jose]Univ Texas San Antonio, Dept Phys & Astron, San Antonio, TX 78249 USA
  • [ 14 ] [Fan, Xiujun]Beijing Univ Technol, Coll Elect Informat & Control Engn, Beijing 100124, Peoples R China

通讯作者信息:

  • [Tour, James M.]Rice Univ, Dept Chem, 6100 Main St, Houston, TX 77005 USA

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来源 :

ACS NANO

ISSN: 1936-0851

年份: 2014

期: 4

卷: 8

页码: 3939-3946

1 7 . 1 0 0

JCR@2022

ESI学科: CHEMISTRY;

ESI高被引阀值:258

JCR分区:1

中科院分区:1

被引次数:

WoS核心集被引频次: 166

SCOPUS被引频次: 166

ESI高被引论文在榜: 0 展开所有

万方被引频次:

中文被引频次:

近30日浏览量: 4

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