BOPI 03 BR/2024 REPERTOIRE NUMERIQUE 32 Fig. 4 ________________________________________ (11) 21464 Consulter le mémoire (51) H01M 10/26 (2018.01); H01M 4/24 (2018.01); H01M 8/18 (2018.01) (21) 1202300444 - PCT/US2022/026844 (22) 28/04/2022 (30) US n° 63/181,757 du 29/04/2021 (54) Electrolyte formulations and additives for iron anode electrochemical systems. (72) WOODFORD, William Henry (US); NEWHOUSE, Jocelyn Marie (US); THOMPSON, Annelise Christine (US); GIBSON, Michael Andrew (US); PERKINS, Nicholas Reed (US); THOMAS-ALYEA, Karen (US); EISENACH, Rebecca Marie (US); TAYLOR, Olivia Claire (US) et SCHRODER, Kjell William (US). (73) FORM ENERGY, INC., 30 Dane Street, SOMERVILLE, Massachusetts 02143 (US) (74) S.C.P AKKUM, AKKUM & Associates, Quartier Mballa II, Dragages, B.P. 4966, YAOUNDE (CM). (57) Systems, methods, and devices of various aspects include using tin and/or antimony as an additive to an electrolyte and/or electrode in an electrochemical system, such as a battery, having an iron-based anode. In some aspects, the addition of tin and/or antimony may improve cycling of the iron-based anode. Systems, methods, and devices of various aspects include using high hydroxide concentration electrolyte in an electrochemical system, such as a battery. In some aspects, a high hydroxide concentration electrolyte may increase the stored amount of charge stored in the cell (i.e., the capacity of the battery material) and/or decrease the overpotential (i.e., increase the voltage) of the battery.
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