GEM Files Patent for Enhanced Sodium Iron Sulfate Cathode Boosting Sodium-Ion Battery Performance

Published: Sep 13, 2024 14:22

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【Sodium-ion Battery Cathode: Patent Application for Sodium Iron Sulfate Cathode Material by GEM】On September 11, 2024, GEM (Wuxi) Energy Materials Co., Ltd. submitted a patent application titled "A Modified Sodium Iron Sulfate Cathode Material and Its Preparation Method and Application," with a publication number of CN202410836207.6 and an application date of June 2024. The key steps involve: (1) Mixing sodium iron sulfate cathode material, Na4MP2O9, and auxiliary materials (carbon fibers) to obtain a mixture, where M can be titanium (Ti) or vanadium (V); (2) Fusing and coating the mixture to obtain a coated cathode material; (3) Annealing the coated cathode material. The resulting modified sodium iron sulfate cathode material exhibits significant improvements in electrical performance, particularly in terms of cycle performance and conductivity, while also enhancing the battery's specific capacity and rate capability.

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