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241009s2024 xx |||||o 00| ||eng c |
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|a 10.1002/adma.202410797
|2 doi
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|a pubmed24n1612.xml
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|a (DE-627)NLM378670204
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|a (NLM)39380407
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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 Zhang, Heng
|e verfasserin
|4 aut
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|a Electronic Confinement-Restrained
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|c 2024
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|a Text
|b txt
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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 25.11.2024
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2024 Wiley‐VCH GmbH.
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|a Sodium (Na) super-ionic conductor structured Na3MnTi(PO4)3 (NMTP) cathodes have garnered interest owing to their cost-effectiveness and high operating voltages. However, the voltage hysteresis phenomenon triggered by Mn Na · ${\mathrm{Mn}}_{{\mathrm{Na}}}^{\mathrm{\cdot}}$ anti-site defects ( Mn Na · ${\mathrm{Mn}}_{{\mathrm{Na}}}^{\mathrm{\cdot}}$ -ASD), namely, the occupation of Mn2+ in the Na2 vacancies in NMTP, leads to sluggish diffusion kinetics and low energy efficiency. This study employs an innovative electronic confinement-restrained strategy to achieve the regulation of Mn Na · ${\mathrm{Mn}}_{{\mathrm{Na}}}^{\mathrm{\cdot}}$ -ASD. Partial replacement of titanium (Ti) with electron-rich vanadium (V) favors strong electronic interactions with Mn2+, restraining Mn2+ migration. The results suggest that this strategy can significantly increase the vacancy formation energy and migration energy barrier of manganese (Mn), thus inhibiting Mn Na · ${\mathrm{Mn}}_{{\mathrm{Na}}}^{\mathrm{\cdot}}$ -ASD formation. As proof of this concept, an Na-rich Na3.5MnTi0.5V0.5(PO4)3 (NMTVP) material is designed, wherein the electronic interaction enhanced the redox activity and achieved more Na+ storage under high-voltage. The NMTVP cathode delivered a reversible specific capacity of up to 182.7 mAh g-1 and output an excellent specific energy of 513.8 Wh kg-1, corresponding to ≈3.2 electron transfer processes, wherein the energy efficiency increased by 35.5% at 30 C. Through the confinement effect of electron interactions, this strategy provides novel perspectives for the exploitation and breakthrough of high-energy-density cathode materials in Na-ion batteries
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|a Journal Article
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|a anti‐site defects
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|a cathode
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|a electron confinement
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| 650 |
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|a sodium‐ion batteries
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| 650 |
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4 |
|a voltage hysteresis
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| 700 |
1 |
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|a Gu, Zhen-Yi
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wang, Xiao-Tong
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zhao, Xin-Xin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Heng, Yong-Li
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Liu, Yan
|e verfasserin
|4 aut
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| 700 |
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|a Yang, Jia-Lin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Zheng, Shuo-Hang
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Wu, Xing-Long
|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 36(2024), 47 vom: 01. Nov., Seite e2410797
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
1 |
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|g volume:36
|g year:2024
|g number:47
|g day:01
|g month:11
|g pages:e2410797
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|u http://dx.doi.org/10.1002/adma.202410797
|3 Volltext
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|d 36
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