[18p-C43-1~17] 1.4 Energy conversion, storage, resources and environment

2:15 PM - 2:30 PM JST(5:15 AM - 5:30 AM UTC)

[18p-C43-6] Role of Anion Exchange Membrane on Flooding in a CO₂ Reduction Reactor

〇Takeharu Murakami¹, Kei Morishita¹, Kazuki Koike^1,2, Kentaro Inoue^1,2, Takeshi Matsumoto¹, Takayo Ogawa¹, Katsushi Fujii¹, Atsushi Ogura^2,3, Satoshi Wada¹ (1.RIKEN RAP, 2.Meiji Univ., 3.MREL)

Keywords:

CO2 reduction,electrochemistry,Ion exchange membrane

Flooding of anode electrolyte to the cathode side and salt deposition are major issues in the development of zero-gap reactors for electrochemical CO₂ reduction. We show from a discussion of mass transfer through ion exchange membranes that the driving force and extent of flooding can be understood from the balance between diffusion osmosis due to electrolyte concentration differences and water molecule transfer due to electrophoretic migration of hydrated ions.