Premium
Constructing Hierarchical Tectorum‐like α‐Fe 2 O 3 /PPy Nanoarrays on Carbon Cloth for Solid‐State Asymmetric Supercapacitors
Author(s) -
Wang Libin,
Yang Huiling,
Liu Xiaoxiao,
Zeng Rui,
Li Ming,
Huang Yunhui,
Hu Xianluo
Publication year - 2017
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201609527
Subject(s) - supercapacitor , polypyrrole , materials science , electrode , power density , electrochemistry , capacitance , polymerization , nanotechnology , electrical conductor , chemical engineering , current density , carbon fibers , optoelectronics , polymer , power (physics) , composite material , chemistry , composite number , physics , quantum mechanics , engineering
The design of complex heterostructured electrode materials that deliver superior electrochemical performances to their individual counterparts has stimulated intensive research on configuring supercapacitors with high energy and power densities. Herein we fabricate hierarchical tectorum‐like α‐Fe 2 O 3 /polypyrrole (PPy) nanoarrays (T‐Fe 2 O 3 /PPy NAs). The 3D, and interconnected T‐Fe 2 O 3 /PPy NAs are successfully grown on conductive carbon cloth through an easy self‐sacrificing template and in situ vapor‐phase polymerization route under mild conditions. The electrode made of the T‐Fe 2 O 3 /PPy NAs exhibits a high areal capacitance of 382.4 mF cm −2 at a current density of 0.5 mA cm −2 and excellent reversibility. The solid‐state asymmetric supercapacitor consisting of T‐Fe 2 O 3 /PPy NAs and MnO 2 electrodes achieves a high energy density of 0.22 mWh cm −3 at a power density of 165.6 mW cm −3 .