Optimal liquid sulfur deposition dynamics for fast-charging Li-S batteries
Source abstract
Abstract
It is urgent to develop fast-charging batteries to eliminate the charging concerns when using electric vehicles. The fluid nature of liquid sulfur was found to enhance areal capacities and contribute to lithium-sulfur (Li-S) fast-charging batteries. However, the deposition kinetics of liquid sulfur in Li-S batteries remain underexplored. This study uses a micro-battery device to track the in-situ deposition of liquid sulfur on carbon film . Surprisingly, slower reaction and sulfur growth kinetics were observed even under high overpotential and high-conductivity substrates, indicating that excessive sulfur droplet formation impedes both reaction and growth kinetics. This insight guided the tailoring of carbon nanofiber cathodes, resulting in 94 % capacity retention even with a significant increase in charging rate (from 1 C to 8 C). This research advances our understanding of liquid sulfur in Li-S batteries and provides guidance for designing high-performance, fast-charging cathodes.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Advanced Battery Materials and Technologies · Advancements in Battery Materials · Advanced Battery Technologies Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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