Publications by authors named "Lishen Ai"
Article Synopsis
- Single-atom metals (SAMs), like Sn-SAMs, face challenges in catalytic performance due to low metal loading; this study introduces a method to create ultrahigh-loading Sn-SAMs on a carbon nanorings matrix.
- The formation process involves converting oxygen-coordinated SnO to nitrogen-coordinated Sn-N while promoting diffusion throughout the carbon matrix using gaseous intermediates.
- The resulting Sn-SAMs@CNR shows impressive performance in sodium-ion batteries, with high durability and a minimal capacity decay over extensive cycling, suggesting a promising strategy for enhancing energy storage materials.
The lithium polysulfide (LiPSs) shuttling and slow chemical reactions at the sulfur cathode and the formation of dendritic lithium in metal anodes severely hinder the popularization of lithium-sulfur batteries. Here, a B,N-codoped carbon nanotube (BNCNTs) array decorated with sulfilic and lithiophilic CoSe nanoparticles grown on a carbon cloth (CoSe@BNCNTs/CC) as both a sulfur and a lithium host is reported. Density functional theory (DFT) calculations, simulations, and electrochemical performance determinations demonstrate that CoSe@BNCNTs/CC can simultaneously exert catalytic effects for accelerating LiPSs conversion and realize smooth and uniform lithium deposition to regulate the S and Li electrochemistry.
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