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231225s2020 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201908027
|2 doi
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|a pubmed24n1031.xml
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|a (DE-627)NLM309347432
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|a (NLM)32350944
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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 Dong, Shuai
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Tellurium
|b A High-Volumetric-Capacity Potassium-Ion Battery Electrode Material
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|c 2020
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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
|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 © 2020 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Currently, exploring high-volumetric-capacity electrode materials that allow for reversible (de-)insertion of large-size K+ ions remains challenging. Tellurium (Te) is a promising alternative electrode for storage of K+ ions due to its high volumetric capacity, confirmed in lithium-/sodium-ion batteries, and the intrinsic good electronic conductivity. However, the charge storage capability and mechanism of Te in potassium-ion batteries (KIBs) have not been unveiled until now. Here, a novel K-Te battery is constructed, and the K+ -ion storage mechanism of Te is revealed to be a two-electron conversion-type reaction of 2K + Te ↔ K2 Te, resulting in a high theoretical volumetric capacity of 2619 mAh cm-3 . Consequently, the rationally fabricated tellurium/porous carbon electrodes deliver an ultrahigh reversible volumetric capacity of 2493.13 mAh cm-3 at 0.5 C (based on Te), a high-rate capacity of 783.13 mAh cm-3 at 15 C, and superior long-term cycling stability for 1000 cycles at 5 C. This excellent electrochemical performance proves the feasibility of utilizing Te as a high-volumetric-capacity active material for storage of K+ ions and will advance the practical application of KIBs
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|a Journal Article
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|a K-Te batteries
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|a charge storage mechanism
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4 |
|a potassium-ion batteries
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4 |
|a tellurium
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4 |
|a volumetric capacity
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1 |
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|a Yu, Dandan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yang, Jie
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Jiang, Li
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Jiawei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cheng, Liwei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhou, Yan
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Yue, Honglei
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Hua
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Guo, Lin
|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), 23 vom: 01. Juni, Seite e1908027
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
1 |
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|g volume:32
|g year:2020
|g number:23
|g day:01
|g month:06
|g pages:e1908027
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| 856 |
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|u http://dx.doi.org/10.1002/adma.201908027
|3 Volltext
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|j 2020
|e 23
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|h e1908027
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