Aluminum phosphate as a bifunctional additive for improved cycling stability of Li-S batteries
作者： Duc-Luong Vu , Namyong Kim , Yoon Myung , MinHo Yang , Jae-won Lee
DOI: 10.1016/J.JPOWSOUR.2020.228068
关键词:
摘要: We demonstrate a facile way to alleviate lithium polysulfide shuttle effect by using aluminum phosphate (AlPO 4) as a bifunctional additive in lithium-sulfur (Li-S) batteries. AlPO 4 microparticles are synthesized via sol-gel and subsequent calcination process. The effects of AlPO 4 on adsorption of lithium polysulfide as well as the performance of Li-S cell are investigated. The Li-S cell containing AlPO 4 1.0 wt% retains 76% of the initial capacity after 100 cycles at 0.2 C and it retains 453 mAh∙ g− 1 at 1.0 C. Using ex-situ X-ray photoelectron …
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