Effects of Self-Catalyzed Polyaniline Coating on the Electrochemical Performance of 0.4Li2MnO3{middle dot}0.6LiMn0.33Ni0.33Co0.33O2 Electrodes | Zendy

KugSeung Lee | Zendy; Jihyeon Gim | Zendy; Prae Chirawatkul | Zendy; Ji Hoon Kim | Zendy; Tae Joo Shin | Zendy; Docheon Ahn | Zendy

Open Access

Effects of Self-Catalyzed Polyaniline Coating on the Electrochemical Performance of 0.4Li2MnO3{middle dot}0.6LiMn0.33Ni0.33Co0.33O2 Electrodes

Author(s) -

KugSeung Lee,

Jihyeon Gim,

Prae Chirawatkul,

Ji Hoon Kim,

Tae Joo Shin,

Docheon Ahn

Publication year - 2014

Publication title -

ecs electrochemistry letters

Language(s) - English

Resource type - Journals

eISSN - 2162-8734

pISSN - 2162-8726

DOI - 10.1149/2.0141501eel

Subject(s) - polyaniline , materials science , electrolyte , coating , electrochemistry , electrode , polymerization , catalysis , chemical engineering , layer (electronics) , interphase , inorganic chemistry , composite material , chemistry , polymer , organic chemistry , engineering , biology , genetics

Self-catalyzed polyaniline (PANI)-coating on the surface of 0.4Li(2)MnO(3) center dot 0.6LiMn(0.33)Ni(0.33)Co(0.33)O(2) powders was prepared by chemical oxidative polymerization with the aid of the Mn4+ ions of the pristine material as oxidants. Discharge capacity of the PANI-coated electrode was 98 mAhg(-1) at 2.4 C-rate, while the uncoated sample showed 68 mAhg(-1). Discharge capacity was retained at 94% by the 40th cycle, while that of uncoated electrode was retained at 85%. The improvement of electrochemical performances is attributed to the PANI-coating that acts as a protective layer and suppresses the formation of solid electrolyte interphase layer by retarding the rate of electrolyte decomposition. (C) 2014 The Electrochemical Society. All rights reservedclos

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