Publications by authors named "Cheng-Dong Bai"
Multifunctional Ion-Sieve Constructed by 2D Materials as an Interlayer for Li-S Batteries.
ACS Appl Mater Interfaces
March 2019
For Li-S batteries, the interlayer between the separator and sulfur cathode preventing lithium polysulfide (LiPS) travel across the membrane is a research hotspot. The good blocking ability for LiPSs indicates that these interlayers can promote the electrochemistry performance with high S loading. However, most of these interlayers are just used as a simple blocking wall.
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- The study focuses on enhancing Li-S battery performance using a graphene-BN nanosheet composite for better polysulfide adsorption.
- Most previous research on sulfur electrode materials was conducted at room temperature, neglecting the interactions between components.
- The composite allows Li-S batteries to function effectively across a wide temperature range, achieving high capacity retention and minimal capacity loss over many cycles.
High utilization and loading of sulfur in cathodes holds the key in the realization of Li-S batteries. We here synthesized a CoN mesoporous sphere, which was made up of nanosheets, via an easy and convenient method. This material presents high affinity, speedy trapping, and absorbing capacity for polysulfides and acts as a bifunctional catalysis for sulfur redox processes; therefore it is an ideal matrix for S active material.
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