Thermal Conductive 2D Boron Nitride for High‐Performance All‐Solid‐State Lithium–Sulfur Batteries

Thermal Conductive 2D Boron Nitride for High‐Performance All‐Solid‐State Lithium–Sulfur Batteries

Advanced Science

10.1002/advs.202001303

http://dx.doi.org/10.1002/advs.202001303

Xuesong Yin, Liu Wang, Yeongae Kim, Ning Ding, Junhua Kong, Dorsasadat Safanama, Yun Zheng, Jianwei Xu, Durga Venkata Maheswar Repaka, Kedar Hippalgaonkar, Seok Woo Lee, Stefan Adams, Guangyuan Wesley Zheng

Biochemistry, General Materials Science, General Physics and Astronomy, General Chemical Engineering, Medicine (miscellaneous), Genetics and Molecular Biology (miscellaneous), General Engineering

20 August 2020

Yin, X., Wang, L., Kim, Y., Ding, N., Kong, J., Safanama, D., Zheng, Y., Xu, J., Repaka, D. V. M., Hippalgaonkar, K., Lee, S. W., Adams, S., & Zheng, G. W. (2020). Thermal Conductive 2D Boron Nitride for High‐Performance All‐Solid‐State Lithium–Sulfur Batteries. Advanced Science, 7(19), 2001303. Portico. https://doi.org/10.1002/advs.202001303

Polymer-based solid-state electrolytes are shown to be highly promising for realizing low-cost, high-capacity, and safe Li batteries. One major challenge for polymer solid-state batteries is the relatively high operating temperature (60–80 °C), which means operating such batteries will require significant ramp up time due to heating. On the other hand, as polymer electrolytes are poor thermal conductors, thermal variation across the polymer electrolyte can lead to nonuniformity in ionic conductivity. This can be highly detrimental to lithium deposition and may result in dendrite formation. Here, a polyethylene oxide-based electrolyte with improved thermal responses is developed by incorporating 2D boron nitride (BN) nanoflakes. The results show that the BN additive also enhances ionic and mechanical properties of the electrolyte. More uniform Li stripping/deposition and reversible cathode reactions are achieved, which in turn enable all-solid-state lithium–sulfur cells with superior performances.

Attribution 4.0 International (CC BY 4.0)

This research / project is supported by the Singapore Ministry of Education - Academic Research Fund Tier 1
Grant Reference no. : R-279-000-550-133

This research / project is supported by the Agency for Science, Technology and Research - AME Programmatic Fund, Accelerated Materials Development for Manufacturing Program
Grant Reference no. : A1898b0043

This research / project is supported by the Singapore Ministry of Education - Academic Research Fund Tier 2
Grant Reference no. : MOE2018-T2-1-045

This research / project is supported by the Science and Engineering Research Council (SERC), A*STAR - Advanced Energy Storage Research Programme
Grant Reference no. : 1229904044

This research / project is supported by the Science and Engineering Research Council (SERC), A*STAR - Advanced Energy Storage Research Programme
Grant Reference no. : 1229904045

https://oar.a-star.edu.sg/communities-collections/articles/18519

2198-3844

Institute of Materials Research and Engineering