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Semi-solid electrodes having high rate capability

United States Patent

November 10, 2015
View the Complete Patent at the US Patent & Trademark Office
Embodiments described herein relate generally to electrochemical cells having high rate capability, and more particularly to devices, systems and methods of producing high capacity and high rate capability batteries having relatively thick semi-solid electrodes. In some embodiments, an electrochemical cell includes an anode, a semi-solid cathode that includes a suspension of an active material and a conductive material in a liquid electrolyte, and an ion permeable membrane disposed between the anode and the cathode. The semi-solid cathode has a thickness in the range of about 250 .mu.m-2,500 .mu.m, and the electrochemical cell has an area specific capacity of at least 5 mAh/cm.sup.2 at a C-rate of C/2.
Chiang; Yet-Ming (Weston, MA), Duduta; Mihai (Somerville, MA), Holman; Richard (Wellesley, MA), Limthongkul; Pimpa (Boston, MA), Tan; Taison (Cambridge, MA)
24M Technologies, Inc. (Cambridge, MA)
14/ 597,869
January 15, 2015
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with government support under Grant Number DE-AR0000102 awarded by the Department of Energy. The government has certain rights in this invention.