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231224s2017 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201605535
|2 doi
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|a pubmed24n0901.xml
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|a (DE-627)NLM270586288
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|a (NLM)28370429
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Chen, Mingzhe
|e verfasserin
|4 aut
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|a Carbon-Coated Na3.32 Fe2.34 (P2 O7 )2 Cathode Material for High-Rate and Long-Life Sodium-Ion Batteries
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|c 2017
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 18.07.2018
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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 © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Rechargeable sodium-ion batteries are proposed as the most appropriate alternative to lithium batteries due to the fast consumption of the limited lithium resources. Due to their improved safety, polyanion framework compounds have recently gained attention as potential candidates. With the earth-abundant element Fe being the redox center, the uniform carbon-coated Na3.32 Fe2.34 (P2 O7 )2 /C composite represents a promising alternative for sodium-ion batteries. The electrochemical results show that the as-prepared Na3.32 Fe2.34 (P2 O7 )2 /C composite can deliver capacity of ≈100 mA h g-1 at 0.1 C (1 C = 120 mA g-1 ), with capacity retention of 92.3% at 0.5 C after 300 cycles. After adding fluoroethylene carbonate additive to the electrolyte, 89.6% of the initial capacity is maintained, even after 1100 cycles at 5 C. The electrochemical mechanism is systematically investigated via both in situ synchrotron X-ray diffraction and density functional theory calculations. The results show that the sodiation and desodiation are single-phase-transition processes with two 1D sodium paths, which facilitates fast ionic diffusion. A small volume change, nearly 100% first-cycle Coulombic efficiency, and a pseudocapacitance contribution are also demonstrated. This research indicates that this new compound could be a potential competitor for other iron-based cathode electrodes for application in large-scale Na rechargeable batteries
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|a Journal Article
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|a carbon coatings
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|a cathode materials
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|a cycling stability
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|a polyanion frameworks
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|a sodium-ion batteries
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|a Chen, Lingna
|e verfasserin
|4 aut
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|a Hu, Zhe
|e verfasserin
|4 aut
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|a Liu, Qiannan
|e verfasserin
|4 aut
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|a Zhang, Binwei
|e verfasserin
|4 aut
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|a Hu, Yuxiang
|e verfasserin
|4 aut
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|a Gu, Qinfen
|e verfasserin
|4 aut
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|a Wang, Jian-Li
|e verfasserin
|4 aut
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|a Wang, Lian-Zhou
|e verfasserin
|4 aut
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|a Guo, Xiaodong
|e verfasserin
|4 aut
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|a Chou, Shu-Lei
|e verfasserin
|4 aut
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|a Dou, Shi-Xue
|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), 21 vom: 22. Juni
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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|g volume:29
|g year:2017
|g number:21
|g day:22
|g month:06
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|u http://dx.doi.org/10.1002/adma.201605535
|3 Volltext
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