High energy density redox flow device

• Main Authors: CHIANG YET-MING, CARTER WILLIAM CRAIG, LIMTHONGKUL PIMPA, DUDUTA MIHAI
• Format: Patent
• Language: Chinese; English
• Published: 08.01.2014
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

Redox flow devices are described including a positive electrode current collector, a negative electrode current collector, and an ion-permeable membrane separating said positive and negative electrode current collectors, positioned and arranged to define a positive electroactive zone and a negative electroactive zone; wherein at least one of said positive and negative electroactive zone comprises a flowable semi-solid composition comprising ion storage compound particles capable of taking up or releasing said ions during operation of the cell, and wherein the ion storage compound particles have a polydisperse size distribution in which the finest particles present in at least 5 vol% of the total volume, is at least a factor of 5 smaller than the largest particles present in at least 5 vol% of the total volume.