In-situ measurement of electrode thickness change during charge and discharge of a large capacity SiO anode

Abstract

Thickness change of large capacity SiO anode was evaluated through in-situ measurement of a laminate type cell during charge and discharge. The change of a counter electrode thickness was eliminated from the measurement of cell thickness, because the counter electrode was accommodated in a space in a hard separator. At first charge SiO anode gained its thickness by 38.9%. Volume changes of each component of anode such as active material, conductive additive, binder and pore were evaluated. It was found that with large volume change of SiO there was also a large pore volume change in the SiO anode. © The Electrochemical Society of Japan All rights reserved.