ELECTRODE MATERIALS FOR SUPERCONDENSERS
thermal). The way of chemical updating
Description
The hydro-thermal method for porous carbon material
reception at high pressure and technology modes their
treatment, as thermal, chemical, and laser modification are
development. This invention give perspective material for
new generation of condensers. Cheap and ecology plant
materials with surface > 1000 m2/g are used.
The parameters of got supercondensers are higher than
best world samples, and on 3-4 times is cheaper with
carbon materials of famous world productions.
Main properties:
For improvement of supercondensers characteristics it was
spent additional activation of received material (chemical,
laser,
for
electrochemical condensers had been spent processing by
nitric acid that has given the chance to raise specific
capacity of condensers on 5-20 % through clearing of
material surface from different sort of not supervised
impurity, and also through to occurrence of superficial
functional groups which improve contact carbon/electrolyte.
The irradiation of porous carbon material by laser impulses
leads to stabilization Coulomb efficiency which remains to
constant during cycles.
It has been received, that the capacity essentially depends
on modes thermal annealing and reaches the maximum at
annealing temperature 773 K and time of endurance 80
minutes at application of water electrolyte) and 873 K at
time of endurance 90 minutes for organic electrolyte. It
testifies that at the specified parameters of process (time,
temperature) of high-temperature annealing is formed
porous system with an optimum parity between volume
parts of different diameter both for water, and for organic
electrolytes.
Areas of Application
Parameters of the supercondensers generated on the basis
of received porous carbon material from raw materials of
phytogenesis, correspond the best world samples. Thus
times more cheaply
received material
in
comparison with carbon materials of leading world firms.
Stage of Development
Patents of Ukraine on Inventions:
N 80761 Sources of electrical current.
N 80764 Supercondenser.
N 81673 Lithium-Ionic Sources of electrical current.
N 85677 Galvanic element and reception method for their
electrode materials.
Patents of Ukraine on Utility Models:
N 24159 Storage of electrical energy.
N 34215 Electrode materials for Lithium electro-chemical
Sources of current and method of their reception.
N 37278 Modification method by high laser irradiation of
nano-porous carbon.
in 3-4
is
Table 1.
Porous Carbon Materials Characteristics
Density,
g/cm3
Internal
resistance,
Specific capacity,
F/g (in water
electrolit)
Initial material
Nucleus of apricot
Pistachios
Coco
Phenol-
formaldegime
gum
Specific
surface,
m2/g
1450
1400
1500
1100
205
190
205
185
Ohm
0,09
0,1
0,12
0,13
0,488
0,505
0,696
0,323
Table 2.
Supercondensers parameters due type of electrolyte
Type of
electrolyte
Specific
capacity
(F/g)
Specific
internal
resistance,
(Ohm·cm-2)
Specific
energy of
device
(Wt*hour/kg)
Voltage
(V)
Coulomb
effectivity
(>105 cycles)
33 % wa-
ter solu-
tion КОÐ
205
0,1
4,6
1,0
0,99
1 М
solution
TEABF4 /
РС
86
1,1
18
2,7
0,98
Â
Fig.1. Electronic Microscope image of
Porous Carbon Materials
Contact details:
Head of science direction:
Ivan M. Budzulyak, Dr.Sci., Prof.
Contact person:
Lyubomyr I. Nykyruy, PhD, Ass. Prof.,
Science & Educational Centre Nanomaterials
Accumulation and Generation of Energy Devices
in Vasyl Stefanyk PreCarpathian National University,
Address:
57, Shevchenko Str., Ivano-Frankivsk, 76018, Ukraine
Tel.: +(380)-342-596179, Fax: +(380)-3422-31574
E-mail: lyubomyr@mail.ru
http://www.pu.if.ua/depart/noc/www2/index.html
in
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