Long-life lithium-sulfur batteries with high areal capacity | ResearchBunny

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Abstract

This work demonstrates the fabrication of a coaxial CNTs@TiN-TiO2 sponge using atomic layer deposition (ALD) to create a heterostructure catalyst for lithium polysulfide conversion in lithium-sulfur batteries. Optimization of TiO2 and TiN layer thicknesses and annealing resulted in a high specific capacity of 1289 mAh g⁻¹ at 1C and 85% capacity retention after 500 cycles at 2C. The porous structure also enabled a high areal capacity of 21.5 mAh cm⁻².

Publisher

Nature Communications

Published On

Aug 06, 2021

Authors

Hui Zhang, Luis K. Ono, Guoqing Tong, Yuqiang Liu, Yabing Qi

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