A lithium powder electrode is applied as an anode in a lithium-sulfur battery system to examine the effects of changes in the anode surface area on electrochemical behavior. Besides preventing dendrite growth, as in other lithium-ion batteries, the lithium powder anode achieves an elevation in lithium-ion transfer, which can be attributed to an increase in the exchange current density caused by expansion of the surface area of the anode. This promotion of lithium-ion diffusion also leads to an increase in lithium-ion transfer near the cathode site and contributes to the reversible reaction between the lithium ion and sulfur. As a result, the reversibility in cathodic reactions is enhanced, thereby improving its specific capacity and retention. Scanning electron microscopy and X-ray photoelectron spectroscopy reveal that the morphology of the cathode is maintained throughout the process, and a solid electrolyte interphase (SEI) with lower electrolyte decomposition can be construc...

中文翻译：

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锂硫电池中锂粉阳极的电化学行为

锂粉电极用作锂硫电池系统中的阳极，以检查阳极表面积变化对电化学行为的影响。像在其他锂离子电池中一样，除了防止树枝状晶体生长之外，锂粉阳极还实现了锂离子转移的提升，这可以归因于由阳极表面积扩大引起的交换电流密度的增加。锂离子扩散的这种促进还导致锂离子在阴极位点附近的转移增加，并有助于锂离子和硫之间的可逆反应。结果，提高了阴极反应的可逆性，从而提高了其比容量和保留率。