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(12) PATENT APPLICATION PUBLICATION
(19) INDIA (21) Application No.: 1263/MUM/2004 A
(22) Date of filing of Application: 24/11/2004 (43) Publication Date: 09/06/2006
(54) Title of the invention: POLYANILINE THIN FILM BASED SUPERCAPACITOR
(51) International classification : H01M 4/02,
H01G 9/00
(31) Priority Document No : NIL
(32) Priority Date : NIL
(33) Name of priority country : NIL
(86) International Application No : NIL
and Filing Date : NIL
(87) International Publication No : NIL
(61) Patent of addition to :
Application No
NIL
(62)
Filed on : N.A.
Divisional to Application No : NIL
Filed on : N.A.
(71) Name of Applicant:
1. DR.CHANDRAKANT
DNYANDEV LOKHANDE
2. MS.SANDHYA SHIVRAM
KULKARNI
3. MS.PRAVINA BALKRISHNA PATIL
Address of the Applicant:
DEPARTMENT OF PHYSICS,
SHIVAJI UNIVERSITY, KOLHAPUR-
416 004 (M.S.), INDIA.
(72) Name of the Inventor:
1. DR.CHANDRAKANT
DNYANDEV LOKHANDE
2. MS.SANDHYA SHIVRAM
KULKARNI
3. MS.PRAVINA BALKRISHNA
PATIL
Filed U/S 5(2) before The Patents
(Amendment) Act, 2005: NO
(57) Abstract: Supercapacitors or Electrochemical capacitors are a class of high rate energy storage/discharge
devices, which use electrolytes and electrodes of various kinds, in a system similar to that of conventional
batteries. The use of conducting polymer materials for redox supercapacitors ahs several advantages over other
system. In addition, good specific capacitance can be obtained and existing battery type technology for fabrication
procedures may be used. Among them, polyaniline has attracted much attention because of higher environmental
stability, controllable electrical conductivity and easy processability. Further, the porosity and surface area of
polymer/electrolyte generally depends on the redox state of polymer as this features can be exploited to produce
high energy density electrodes for supercapacitor.
We have synthesized polyaniline thin films by electrochemical anodization at constant potentials.
Electrochemical capacitor was formed with H 2 SO 4 solution. The specific supercapacitance of 650 F/g and
interfacial capacitance of 0.14F/cm 2 were obtained.
Drawing: 02 Sheets.
Total Pages: 13.
Fig. Nil
The Patent Office Journal 09/06/2006 10922