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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201906735
|2 doi
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|a pubmed24n1015.xml
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|a (DE-627)NLM30459945X
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|a (NLM)31859405
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Liu, Pengcheng
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Dendrite-Free Potassium Metal Anodes in a Carbonate Electrolyte
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|c 2020
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Potassium (K) metal anodes suffer from a challenging problem of dendrite growth. Here, it is demonstrated that a tailored current collector will stabilize the metal plating-stripping behavior even with a conventional KPF6 -carbonate electrolyte. A 3D copper current collector is functionalized with partially reduced graphene oxide to create a potassiophilic surface, the electrode being denoted as rGO3D-Cu. Potassiophilic versus potassiophobic experiments demonstrate that molten K fully wets rGO@3D-Cu after 6 s, but does not wet unfunctionalized 3D-Cu. Electrochemically, a unique synergy is achieved that is driven by interfacial tension and geometry: the adherent rGO underlayer promotes 2D layer-by-layer (Frank-van der Merwe) metal film growth at early stages of plating, while the tortuous 3D-Cu electrode reduces the current density and geometrically frustrates dendrites. The rGO@3D-Cu symmetric cells and half-cells achieve state-of-the-art plating and stripping performance. The symmetric rGO@3D-Cu cells exhibit stable cycling at 0.1-2 mA cm-2 , while baseline Cu prematurely fails when the current reaches 0.5 mA cm-2 . The half-cells cells of rGO@3D-Cu (no K reservoir) are stable at 0.5 mA cm-2 for 10 000 min (100 cycles), and at 1 mA cm-2 for 5000 min. The baseline 3D-Cu, planar rGO@Cu, and planar Cu foil fails after 5110, 3012, and 1410 min, respectively
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4 |
|a Journal Article
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| 650 |
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4 |
|a lithium-metal anodes
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| 650 |
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4 |
|a potassium ion batteries (PIBs/KIBs)
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| 650 |
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4 |
|a potassium sulfur batteries
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| 650 |
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4 |
|a sodium-metal anodes
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| 650 |
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4 |
|a solid electrolyte interphase (SEI)
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| 700 |
1 |
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|a Wang, Yixian
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Gu, Qilin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Nanda, Jagjit
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Watt, John
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Mitlin, David
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 32(2020), 7 vom: 09. Feb., Seite e1906735
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
1 |
8 |
|g volume:32
|g year:2020
|g number:7
|g day:09
|g month:02
|g pages:e1906735
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| 856 |
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|u http://dx.doi.org/10.1002/adma.201906735
|3 Volltext
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