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231225s2017 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201702752
|2 doi
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|a pubmed24n0918.xml
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|a (NLM)28892193
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|a DE-627
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|e rakwb
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|a eng
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|a Yang, Chuchu
|e verfasserin
|4 aut
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|a Direct Observations of the Formation and Redox-Mediator-Assisted Decomposition of Li2 O2 in a Liquid-Cell Li-O2 Microbattery by Scanning Transmission Electron Microscopy
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|c 2017
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 18.07.2018
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|a Date Revised 01.10.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Operando scanning transmission electron microscopy observations of cathodic reactions in a liquid-cell Li-O2 microbattery in the presence of the redox mediator tetrathiafulvalene (TTF) in 1.0 m LiClO4 dissolved dimethyl sulfoxide electrolyte are reported. It is found that the TTF addition does not obviously affect the discharge reaction for the formation of a solid Li2 O2 phase. The coarsening of Li2 O2 nanoparticles occurs via both conventional Ostwald ripening and nonclassical crystallization by particle attachment. During charging, the oxidation reaction at significantly reduced charge potentials mainly takes place at Li2 O2 /electrolyte interfaces and has obvious correspondence with the oxidized TTF+ distributions in the electric fields of the charged electrode. This study provides direct evidence that TTF truly plays a role in promoting the decomposition of Li2 O2 as a soluble charge-transfer agent between the electrode and the Li2 O2
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|a Journal Article
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|a Li-O2 batteries
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|a liquid-cell TEM
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|a operando scanning transmission electron microscopy
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| 650 |
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|a redox mediators
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|a tetrathiafulvalene (TTF)
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1 |
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|a Han, Jiuhui
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Pan
|e verfasserin
|4 aut
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| 700 |
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|a Hou, Chen
|e verfasserin
|4 aut
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| 700 |
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|a Huang, Gang
|e verfasserin
|4 aut
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1 |
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|a Fujita, Takeshi
|e verfasserin
|4 aut
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1 |
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|a Hirata, Akihiko
|e verfasserin
|4 aut
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| 700 |
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|a Chen, Mingwei
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 29(2017), 41 vom: 19. Nov.
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:29
|g year:2017
|g number:41
|g day:19
|g month:11
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|u http://dx.doi.org/10.1002/adma.201702752
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