1T-VS 2 @V 2 O 3 Synergistic Nanoarchitecture-Based Lamellar Clusters as the High Conductivity Cathodes of Thermal Batteries

Thermal batteries are solid-state, thermally activated batteries with long storage times and high reliability. FeS2 is used as a cathode material commonly, but the high internal resistance and low voltage platform limit the improvement of battery performance. Herein, the 1T-phase vanadium disulfide (VS2) is prepared via the scalable hydrothermal method and applied to thermal battery cathode materials for the first time. 1T-VS2 lamellar flower clusters have high electronic conductivity (1.583 S cm–1) at room temperature, which is 75 times higher than FeS2 (0.021 S cm–1). Mechanism analysis shows that 1T-VS2@V2O3 can be formed based on the part of 1T-VS2 being oxidized to V2O3 at the discharge temperature.…

• NN
  National Natural Science Foundation of China

  Awards: 52374298, 52022013
• AS
  Aeronautical Science Foundation of China

  Award: 20174072003
• CP
  Chinese Polar Environment Comprehensive Investigation and Assessment Programmes

  Award: 2023YFC3009500