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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202304428
|2 doi
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|a pubmed25n1206.xml
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|a (DE-627)NLM362182175
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|a (NLM)37721370
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|a DE-627
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|c DE-627
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|a eng
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| 100 |
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|a Zhou, Yifan
|e verfasserin
|4 aut
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|a Reversible Multielectron Redox Chemistry in a NASICON-Type Cathode toward High-Energy-Density and Long-Life Sodium-Ion Full Batteries
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|c 2023
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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 02.11.2023
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2023 Wiley-VCH GmbH.
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|a Na-superionic-conductor (NASICON)-type cathodes (e.g., Na3 V2 (PO4 )3 ) have attracted extensive attention due to their open and robust framework, fast Na+ mobility, and superior thermal stability. To commercialize sodium-ion batteries (SIBs), higher energy density and lower cost requirements are urgently needed for NASICON-type cathodes. Herein, Na3.5 V1.5 Fe0.5 (PO4 )3 (NVFP) is designed by an Fe-substitution strategy, which not only reduces the exorbitant cost of vanadium, but also realizes high-voltage multielectron reactions. The NVFP cathode can deliver extraordinary capacity (148.2 mAh g-1 ), and decent cycling durability up to 84% after 10 000 cycles at 100 C. In situ X-ray diffraction and ex situ X-ray photoelectron spectroscopy characterizations reveal reversible structural evolution and redox processes (Fe2+ /Fe3+ , V3+ /V4+ , and V4+ /V5+ ) during electrochemical reactions. The low ionic-migration energy barrier and ideal Na+ -diffusion kinetics are elucidated by density functional theory calculations. Combined with electron paramagnetic resonance spectroscopy, Fe with unpaired electrons in the 3d orbital is inseparable from the higher-valence redox activation. More competitively, coupling with a hard carbon (HC) anode, HC//NVFP full cells demonstrate high-rate capability and long-duration cycling lifespan (3000 stable cycles at 50 C), along with material-level energy density up to 304 Wh kg-1 . The present work can provide new perspectives to accelerate the commercialization of SIBs
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|a Journal Article
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|a NASICON structure
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|a cathode materials
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|a high energy density
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|a multielectron redox reaction
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| 650 |
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|a sodium-ion batteries
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| 700 |
1 |
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|a Xu, Guofu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Lin, Jiande
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhang, Yangpu
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Fang, Guozhao
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhou, Jiang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Cao, Xinxin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liang, Shuquan
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 35(2023), 44 vom: 01. Nov., Seite e2304428
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnas
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| 773 |
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|g volume:35
|g year:2023
|g number:44
|g day:01
|g month:11
|g pages:e2304428
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|u http://dx.doi.org/10.1002/adma.202304428
|3 Volltext
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