Sodium - natural rubber batteries

Koszalin University of Technology

Prof. Tadeusz Hryniewicz,
Koszalin University of Technology,
Department: Surface Electrochemistry and Technology,
Address: Raclawicka 15-17, PL 75-620 Koszalin
www.tu.koszalin.pl

E-mail: Tadeusz.Hryniewicz@tu.koszalin.pl
Tel.: +48 94 3478244

Keywords:
sodium, rubber latex, polymeric electrolytes, new batteries

Preferred partners countries: 
Poland, EU, USA

Description of proposal/expertise:

Lithium polymer batteries are known by now, which have found practical
application as miniature batteries, among others in small electronic
watches. In such batteries, metallic lithium is an anode and manganese
dioxide is a cathode, with a conductive polymer, like polyaniline or
polypyrole, placed between anode and cathode.
      
Natural rubber (NR) is found in the form of rubber latex and oxidates
quickly in the air, producing an elastic and stretchy rubber
(India-rubber). In order to avoid this process (since India-rubber
dissolves more easily in the form of rubber latex), it was immediately
added to toluene (99 % pure). To work out a method of natural conductive
rubber synthesis, it required to precipitate rubber latex from toluene
and to dissolve it again in toluene in order to make strictly specific
mass recalculations.
      
The conductive properties of butadiene polymer (BR) and
styrene-butadiene polymer (SBR) with sodium chlorate (VII) can be used
at industrial scale as miniature batteries. Polymer material modified
with sodium chlorate (VII) was used to produce sodium polybutadiene and
poly(styrene-butadiene) batteries. The conductivity of such polymer
composites for temperatures ranging 243-313 K is at a similar level and
amounts to 10−4 S cm−1 for butadiene polymer and to 10−3 S cm−1 for
styrene-butadiene polymer at 100 kHz. The conductive battery made of
butadiene polymer shows an open circuit voltage of 0.9V with a
short-circuit current of 40 mA, whereas that made of styrene-butadiene
polymer shows a open circuit voltage of 1.2V with a short-circuit
current of 38 mA. 

We are looking for a partner who can:
(1)	provide the test run and produce a pilot lot
(2)	start manufacture the batteries based on our patent



Existing cooperation:
	
• co-operation between the originators only: Dr Tomasz Borowski
(Złocieniec) & Professor Tadeusz Hryniewicz (Koszalin University of
Technology)


Choose your proposal/expertise area:
Energy:
- Renewable electricity generation,
- Energy efficiency and savings