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Expediting the electrochemical kinetics of 3D-printed sulfur cathodes for Li���S batteries with high rate capability and areal capacity

Journal Article


Abstract


  • 3D printing has stimulated burgeoning interest in customized design of sulfur cathodes for Li���S batteries targeting advanced electrochemical performances. Nevertheless, the prevailing 3D-printed sulfur electrodes are solely based on carbonaceous materials; constructing electrocatalyst-equipped cathode to help expedite sulfur redox kinetics remains unexplored thus far. Herein, we develop a free-standing sulfur cathode via 3D printing using hybrid ink encompassing sulfur/carbon and metallic LaB6 electrocatalyst. Such unique architectures with optimized Li+/e��� transport and ample porosity are in favor of efficient polysulfide regulation. Accordingly, an initial capacity of 693 mAh g���1 can be achieved at 6.0C accompanied by a low capacity fading rate of 0.067% per cycle over 800 cycles (with a sulfur loading of 1.5 mg cm���2). To envisage practical applications, elevated sulfur loadings from 3.3 to 9.3 mg cm���2 are further evaluated. Our study marks the first-time investigation on the introduction of efficient electrocatalyst into the printable ink for the construction of 3D-printed Li���S battery harnessing high rate capability and areal capacity.

Publication Date


  • 2020

Citation


  • Cai, J., Fan, Z., Jin, J., Shi, Z., Dou, S., Sun, J., & Liu, Z. (2020). Expediting the electrochemical kinetics of 3D-printed sulfur cathodes for Li���S batteries with high rate capability and areal capacity. Nano Energy, 75. doi:10.1016/j.nanoen.2020.104970

Scopus Eid


  • 2-s2.0-85085566707

Web Of Science Accession Number


Volume


  • 75

Issue


Place Of Publication


Abstract


  • 3D printing has stimulated burgeoning interest in customized design of sulfur cathodes for Li���S batteries targeting advanced electrochemical performances. Nevertheless, the prevailing 3D-printed sulfur electrodes are solely based on carbonaceous materials; constructing electrocatalyst-equipped cathode to help expedite sulfur redox kinetics remains unexplored thus far. Herein, we develop a free-standing sulfur cathode via 3D printing using hybrid ink encompassing sulfur/carbon and metallic LaB6 electrocatalyst. Such unique architectures with optimized Li+/e��� transport and ample porosity are in favor of efficient polysulfide regulation. Accordingly, an initial capacity of 693 mAh g���1 can be achieved at 6.0C accompanied by a low capacity fading rate of 0.067% per cycle over 800 cycles (with a sulfur loading of 1.5 mg cm���2). To envisage practical applications, elevated sulfur loadings from 3.3 to 9.3 mg cm���2 are further evaluated. Our study marks the first-time investigation on the introduction of efficient electrocatalyst into the printable ink for the construction of 3D-printed Li���S battery harnessing high rate capability and areal capacity.

Publication Date


  • 2020

Citation


  • Cai, J., Fan, Z., Jin, J., Shi, Z., Dou, S., Sun, J., & Liu, Z. (2020). Expediting the electrochemical kinetics of 3D-printed sulfur cathodes for Li���S batteries with high rate capability and areal capacity. Nano Energy, 75. doi:10.1016/j.nanoen.2020.104970

Scopus Eid


  • 2-s2.0-85085566707

Web Of Science Accession Number


Volume


  • 75

Issue


Place Of Publication