Preparation of Zinc//Polyaniline Secondary Battery by Coating Method
LI De-geng
WU Sen
XIA Yang
SI Shi-hui
Abstract：Scale‐like polyaniline compact powders were obtained by constant current electrochemical method with 4 ,4ˊ‐diaminodiphenyl as additives in hydrochloric acid solution .The structure of polyaniline powders obtained by electrochemical synthesis was almost similar to that of chemically synthesized polyaniline ,which is the form of doped emeraldine salt .However ,the electrochemical synthesis of polyaniline powder had better electrochemical ac‐tivity in comparison with the chemically synthesized polyaniline .By using the coating method ,both polyaniline pow‐der composite electrode and zinc powder composite electrode were prepared with self‐made composite binder ,and used as cathode and anode of the zinc //polyaniline secondary cell ,respectively .T he present procedure possessed some advantages such as the controllable thickness of film and the simple manufacture .The orthogonal test was used to optimize the preparation condition for the polyaniline film electrode .The present battery gave the open cir‐cuit potential of 1 .5 V ,and showed commendable stability in ZnCl2 +NH4 Cl solution .During the cycles from 0 .7 V to 1 .7 V ,the discharge capacity of the zinc//polyaniline battery could reach 131 .4 mAh?g-1 under the current density of 2 mA?cm2 ,the average attenuation of discharge capacity of the cell was nearly 0 .07 % during the peri‐od of 35 charge‐discharge cycles ,which indicates pretty cycle performance ,good stability of assembled zinc//polya‐niline secondary battery and the practical application prospect to replace the traditional lead‐acid battery .
Keywords：zinc rechargeable batterypolyanilinecoating preparation
Publication Date：2015-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：7( 35-41 )