WFRF:(Kim Myung Hee)
Sökning: WFRF:(Kim Myung Hee) > (2020-2023) > Lithium dendritic g...
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Lithium dendritic growth inhibitor enabling high capacity, dendrite-free, and high current operation for rechargeable lithium batteries
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- Kim, Hee Jae (författare)
- Sejong Univ, Hybrid Mat Res Ctr, Dept Nanotechnol & Adv Mat Engn, Seoul 05006, South Korea.;Sejong Univ, Sejong Battery Inst, Seoul 05006, South Korea.
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- Umirov, Nurzhan (författare)
- Chungnam Natl Univ, Grad Sch Energy Sci & Technol, 99 Daehak Ro,Yuseong Gu, Daejeon 34134, South Korea.
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- Park, Jae-Sang (författare)
- Sejong Univ, Hybrid Mat Res Ctr, Dept Nanotechnol & Adv Mat Engn, Seoul 05006, South Korea.;Sejong Univ, Sejong Battery Inst, Seoul 05006, South Korea.
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- Sejong Univ, Hybrid Mat Res Ctr, Dept Nanotechnol & Adv Mat Engn, Seoul 05006, South Korea;Sejong Univ, Sejong Battery Inst, Seoul 05006, South Korea. Chungnam Natl Univ, Grad Sch Energy Sci & Technol, 99 Daehak Ro,Yuseong Gu, Daejeon 34134, South Korea. (creator_code:org_t)
- Elsevier, 2022
- 2022
- Engelska.
- Ingår i: Energy Storage Materials. - : Elsevier. - 2405-8289 .- 2405-8297. ; 46, s. 76-89
- Tidskriftsartikel (refereegranskat)
Abstract
Ämnesord
Stäng
- There is no doubt that lithium-metal batteries (LMBs) are considered as attractive power sources owing to their ex-traordinarily high energy density. However, the formation of lithium dendrites during repeated plating/stripping processes hinders their practical application. Herein, we introduce phosphorous pentoxide (P2O5) as an addi-tive to commercial carbonate-based electrolytes to effectively suppress the dendritic growth on the surface of a lithium-metal anode. Significant improvement of the lifespan and coulombic efficiency of the cell were observed with the addition of P2O5 to the electrolyte in Li || Li, Li || Type 316L SS, Li || Cu, and Li || graphite cells. According to surface analyses and microscopic studies, we found reduction mechanism of the P2O5-induced solid-electrolyte interphase (SEI) formation on Li metal. Namely, electrolytic decomposition product, LiF, reacts with P2O5 addi-tive in electrolyte, so that LiPO2F2 is produced by following reaction: 6LiF + 2P(2)O(5) ->& nbsp;3LiPO(2)F(2) + Li3PO4, of which those products suppress dendritic growth of lithium as visualized by operando Synchrotron tomography. The compatibility and outstanding rate performance of the additive-based electrolyte were also demonstrated in Li || NCM full cells. As a result, this finding confirms an effective way to stabilize SEI layers in LMBs via a facile and inexpensive route.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- Lithium
- Dendrite
- P2O5
- Anode
- Battery
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- Kim, Hee Jae
- Umirov, Nurzhan
- Park, Jae-Sang
- Lim, Jae-Hong
- Zhu, Jiefang
- Kim, Sung-Soo
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