CVV has a paper about how to improve Battery Performance with new materials
The paper suggests that current anodes use a binding agent that decreases conductivity and degrades over time. The new materials they present allows anodes to be formed without any binding agents. The conductivity is higher and the anode will last longer to extend Li-Ion batteries.
The paper will be presented this fall at the Fall Conference - In September - I think.
Here it is. The results and detail will be at the MRS conference (Materials Research Society) in december in Boston. Sounds promising.
Battery and ultracapacitor electrodes are traditionally made with at least one polymeric binder material that mechanically holds the various, powder like, raw materials together. In addition to increasing the electrode resistance, the binder is assumed to be at least partially responsible for the performance degradation over time for rechargeable Lithium batteries.
We present here for the first time, by example of a lithium iron phosphate (LFP) based cathode, a novel lithium battery electrode design manufactured with CVD Equipment Corporation’s proprietary NanoToMacro™ platform technology that facilitates a binder-free approach. Preliminary tests, done by Graphene Batteries AS, show that between 0.2 and 5C rates this binder less cathode has a similar specific capacity versus charge/discharge rate performance as the standard cathodes. Results of still ongoing more detailed studies will show if such a novel battery electrode manufacturing design can actually be used to delay the degradation of lithium batteries charging performance over increased numbers of charge/discharge cycles. In addition, we will present test results for 2-4 times thicker than normal (60 µm) thick cathode electrodes, which we expect will allow to significantly increase the volume and/or weight based energy density of lithium battery design.
I found the paper on the company website under a 'papers' link on the left column of the About Applications web page. They are co-publishing this paper with a European Battery manufacturer- Graphene Batteries AS based in Oslo, Norway.
Thank you for the information...... It is only a matter of time before Graphene has wide adoption. And battery technology needs technical improvements. Battery life is one thing that keeps adoption of electric and hybrid cars as low as it has been. Just think if we can have a 500 + mile battery life. What would that do to demand for electrics!!