title: Phase transition in porous electrodes.
abstract: It is shown by Monte Carlo simulation that electrochemical thermodynamics of electrolytes in a porous electrode is qualitatively different from that in the bulk with a planar electrode. In particular, first order phase transitions occur in porous electrodes when the pore size is comparable to the ion size of the electrolytes: as the voltage is increased from zero, the surface charge density and the ion density in the porous electrodes discontinuously change at a specific voltage. The critical points for those phase transitions are identified.
authors.affiliation: Health Research Institute, National Institute of Advanced Industrial Science and Technology (AIST), Ikeda, Osaka, Japan. k.kiyohara@aist.go.jp
authors.forename: Kenji
authors.initials: K
authors.lastname: Kiyohara
authors.forename: Takushi
authors.initials: T
authors.lastname: Sugino
authors.forename: Kinji
authors.initials: K
authors.lastname: Asaka
mesh_terms: D004560:Electricity; D004563:Electrochemistry; D004566:Electrodes; D004573:Electrolytes / Q000737:chemistry*; D009010:Monte Carlo Method; D044367:Phase Transition; D016062:Porosity
chemical_list: D004573:Electrolytes