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S-Doped Carbon-Coated FeS2/C@C Nanorods for Potassium Storage

Journal Article


Abstract


  • Potassium-ion batteries (PIBs) are promising scalable energy storage system; however, one of the challenges for its potential application is the huge volume variations during cycling due to the insertion/extraction of large size potassium ions. Here, we fabricated the S-doped carbon-coated rod-like FeS2/C@C, which not only effectively alleviate the volume variations upon cycling but also can improve electrical conductivity and maintain the structural integrity. As an anode material for PIBs, the rod-like FeS2/C@C electrodes delivered excellent rate performance (175��mA��h g���1 at 0.5 A g���1) and stable cycle performance (262��mA��h g���1 after 100 cycles at 0.1 A g���1). The superior excellent performance is associated with the unique structure of FeS2/C@C. The as-synthesized FeS2/C@C is demonstrated to be a potential anode for PIBs.

UOW Authors


  •   Zhang, Wenchao (external author)

Publication Date


  • 2021

Citation


  • Li, X., Wang, H., Zhang, W., Feng, Y., & Ma, J. (2021). S-Doped Carbon-Coated FeS2/C@C Nanorods for Potassium Storage. Acta Metallurgica Sinica (English Letters), 34(3), 321-328. doi:10.1007/s40195-020-01050-y

Scopus Eid


  • 2-s2.0-85083847771

Start Page


  • 321

End Page


  • 328

Volume


  • 34

Issue


  • 3

Place Of Publication


Abstract


  • Potassium-ion batteries (PIBs) are promising scalable energy storage system; however, one of the challenges for its potential application is the huge volume variations during cycling due to the insertion/extraction of large size potassium ions. Here, we fabricated the S-doped carbon-coated rod-like FeS2/C@C, which not only effectively alleviate the volume variations upon cycling but also can improve electrical conductivity and maintain the structural integrity. As an anode material for PIBs, the rod-like FeS2/C@C electrodes delivered excellent rate performance (175��mA��h g���1 at 0.5 A g���1) and stable cycle performance (262��mA��h g���1 after 100 cycles at 0.1 A g���1). The superior excellent performance is associated with the unique structure of FeS2/C@C. The as-synthesized FeS2/C@C is demonstrated to be a potential anode for PIBs.

UOW Authors


  •   Zhang, Wenchao (external author)

Publication Date


  • 2021

Citation


  • Li, X., Wang, H., Zhang, W., Feng, Y., & Ma, J. (2021). S-Doped Carbon-Coated FeS2/C@C Nanorods for Potassium Storage. Acta Metallurgica Sinica (English Letters), 34(3), 321-328. doi:10.1007/s40195-020-01050-y

Scopus Eid


  • 2-s2.0-85083847771

Start Page


  • 321

End Page


  • 328

Volume


  • 34

Issue


  • 3

Place Of Publication