• 文献标题:   Constructing graphene-like nanosheets on porous carbon framework for promoted rate performance of Li-ion and Na-ion storage
  • 文献类型:   Article
  • 作  者:   LI JY, QI H, WANG QG, XU ZW, LIU YJ, LI QY, KONG XG, HUANG JF
  • 作者关键词:   biomass carbon, nanostructural design, pseudocapacitance, diffusion, batterie
  • 出版物名称:   ELECTROCHIMICA ACTA
  • ISSN:   0013-4686 EI 1873-3859
  • 通讯作者地址:   Shaanxi Univ Sci Technol
  • 被引频次:   6
  • DOI:   10.1016/j.electacta.2018.02.147
  • 出版年:   2018

▎ 摘  要

Biomass waste-derived carbon materials are considered as high promising electrode materials in rechargable batteries since their wide sources, low costs and abundant reserves on earth. However, the structural design of these materials is still highly needed to further develop their applications in energy storage fields. In this work, peanut skin is choosen as the precursor to construct graphene-like nano-sheets on the surface of porous carbon framework via a sulfuric acid-assisted hydrothermal process with following activation technique. Electrochemical results reveal this unique structure could provide high rate capacity (243 mAh.g(-1) at 5 A g(-1)) and stable cycling performance (681 mAh.g(-1) at 0.1 A g(-1) after 100 cycles) in Li-ion battery and promising Na-ion storage cycling performance (233 mAh.g(-1) at 0.5 A.g(-1) after 450 cycles) as anodes materials. Further contrastive research indicates these promoted performance are mainly attributed to the graphene-like nanosheets in this composite structures. These sheets remarkbly enhance both of the intercalation and surface adsorption of Li-ion with high charge transfer ability, finally facilitating both of the pseudocapacitance and diffusion controlled process during the charge/discharge test. This work provides new choices for the design of nanostructures in other low cost carbonaceous materials with promoted applications in energy storage fields. (C) 2018 Elsevier Ltd. All rights reserved.