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α‐Fe 2 O 3 Based Carbon Composite as Pure Negative Electrode for Application as Supercapacitor
Author(s) -
Li Jiangfeng,
Chen Dandane,
Wu Qingsheng
Publication year - 2019
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201900015
Subject(s) - supercapacitor , composite number , electrode , carbon fibers , capacitance , chemistry , electrochemistry , nanotechnology , power density , energy storage , chemical engineering , electrochemical energy storage , materials science , composite material , power (physics) , physics , quantum mechanics , engineering
Supercapacitors have drawn the great attention of researchers as green energy storage devices. Until now, serious positive electrodes for asymmetric cells have been developed noticeably. Nevertheless, negative electrode materials have been less explored, especially pseudocapacitive materials. In this review, the impact of the morphology and composition of hematite (α‐Fe 2 O 3 ) based carbon composite as pure negative electrode are discussed. Besides, the specific capacitance, electrochemical stability, power density, and energy density of those materials are covered. The asymmetric supercapacitor using α‐Fe 2 O 3 based carbon composite electrode shows high energy density, which can compete with batteries.