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Exploring Aligned‐Carbon‐Nanotubes@Polyaniline Arrays on Household Al as Supercapacitors
Author(s) -
Huang Fan,
Lou Fengliu,
Chen De
Publication year - 2012
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201100553
Subject(s) - supercapacitor , polyaniline , materials science , carbon nanotube , electrolyte , current collector , capacitance , carbon fibers , nanotechnology , specific energy , composite number , chemical engineering , electrode , polymer , composite material , chemistry , physics , quantum mechanics , engineering , polymerization
Herein, we demonstrate a new approach towards the construction of supercapacitors consisting of carbon nanotubes (CNTs) and conducting polymers (ECPs) with high specific power, high specific energy, and stable cycling performance through a 3D design of a thin film of polyaniline (PANI) on an aligned small carbon nanotube (ACNT) array on household Al foils. The thin‐film strategy is used to fully exploit the specific capacitance of PANI, and obtain regular pores, strong interaction between PANI and CNTs, and reduced electrical resistance for the electrodes. A facile process is developed to fabricate a highly flexible supercapacitor using this binder‐free composite on household Al foil as the current collector. It exhibits high specific energy of 18.9 Wh kg −1 , high maximum specific power of 11.3 kW kg −1 of the active material in an aqueous electrolyte at 1.0 A g −1 , and excellent rate performance and cycling stability. A high specific energy of 72.4 Wh kg −1 , a high maximum specific power of 24.9 kW kg −1 , and a good cycling performance of the active material are obtained in an organic electrolyte.