Ann: Presentation to International Battery Seminar, page-221

Great find Pasqual , That looks and sounds like our data ! seems this is in development stage or is it available now ?

https://www.mc.showadenko.com/english/kaiketsu/solution/023/index.html

Research and development are underway to utilize silicon-based active materials having higher theoretical capacity for the anode, instead of graphite, with a view to realizing higher capacity for lithium-ion batteries. On the other hand, the silicon-based active materials have a property to undergo large volume changes during charging and discharging. The active materials which repeatedly expand and contract in the battery charging/discharging can cause separation between active materials themselves or active materials and collectors, deformation and cracking in the electrodes and thereby deteriorate the battery’s cycling performance.
Our lithium-ion battery binder uses polyamide-imide resin which forms strong coating films with the elastic modulus of 2.5 GPa or over and tensile strength of 100 MPa or over. This enables to inhibit the deformation in the electrodes caused by the expansion or contraction of silicon-based active materials.

Moreover, the conventional binders allowed the addition of silicon-based active materials undergoing large volume changes only in a little amount, a few per cent of the anode material for inhibiting the deformation and cracking in the electrodes. Our binder is capable of allowing the addition of silicon-based active materials up to 30% while controlling the electrode deformation and maintaining the battery capacity through the cycling (100 cycles, 70% or more based on our test results). The binder allows for the increases in the addition of silicon-based active materials and thereby contributes to the higher capacity of lithium-ion batteries.