Sökning: WFRF:(Agostini Marco 1987)
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Introduction of a n...
Introduction of a nitrate anion with solubility mediator in a carbonate-based electrolyte for a stable potassium metal anode
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- Park, Jimin (författare)
- Hanyang University
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- Kang, Hyokyeong (författare)
- Hanyang University
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- Agostini, Marco, 1987 (författare)
- Universita degli Studi di Roma la Sapienza,Sapienza University of Rome,Chalmers tekniska högskola,Chalmers University of Technology
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- Xiong, Shizhao (författare)
- Kunming University of Science and Technology
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- Kansara, Shivam (författare)
- Hanyang University
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- Xu, Xieyu (författare)
- Xi'an Jiaotong University
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- Liu, Yangyang (författare)
- Xi'an Jiaotong University
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- Hwang, Jang Yeon (författare)
- Hanyang University
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(creator_code:org_t)
- 2024
- 2024
- Engelska.
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Ingår i: Energy Storage Materials. - 2405-8297. ; 69
- Relaterad länk:
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https://research.cha... (primary) (free)
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https://doi.org/10.1...
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https://research.cha...
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Abstract
Ämnesord
Stäng
- In this study, sodium nitrate (NaNO3) dissolves in a carbonate electrolyte for K-metal batteries (KMBs) using a dimethylacetamide (DMA) solvent with a higher Gutmann donor number than that of NO3−. The K-metal anode in 0.02 M NaNO3 electrolyte exhibits enhanced stability due to the modified solid-electrolyte interphase (SEI) layer resulting from the preferential reduction of NaNO3. Reduced NaNO3 forms ionically conductive and mechanically robust compounds in the SEI layer. This compound plays a critical role in altering the morphology of electrodeposited K-metal from dendritic to spherical, reducing the barrier energy of nucleation potential for K-ions. These unique features make K-metal highly resistant to dendrite formation and aggressive electrolyte chemistry. Therefore, the K-metal anode in the proposed electrolyte containing 0.02 M NaNO3 additive ensures excellent cycle life with stable Coulombic efficiency in both symmetrical K/K half cells and full-cells coupled with a Prussian green FeFe(CN)6 cathode.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- Solid electrolyte interphase layer
- Phase-field modelling
- K-metal anodes
- Dendrite
- NaNO additive 3
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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