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  4. Interspace and Vacancy Modulation: Promoting the Zinc Storage of an Alcohol-Based Organic-Inorganic Cathode in a Water-Organic Electrolyte
 
research article

Interspace and Vacancy Modulation: Promoting the Zinc Storage of an Alcohol-Based Organic-Inorganic Cathode in a Water-Organic Electrolyte

He, Weidong
•
Lin, Zedong
•
Zhao, Kangning  
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October 17, 2022
Advanced Materials

Expanding interspace and introducing vacancies are desired to promote the mobility of Zn ions and unlock the inactive sites of layered cathodes. However, this two-point modulation has not yet been achieved simultaneously in vanadium phosphate. Here, a strategy is proposed for fabricating an alcohol-based organic-inorganic hybrid material, VO1-xPO4 center dot 0.56C(6)H(14)O(4), to realize the conjoint modulation of the d-interspace and oxygen vacancies. Peculiar triglycol molecules with an inclined orientation in the interlayer also boost the improvement in the conversion rate of V5+ to V4+ and the intensity of the P-O bond. Their synergism can ensure steerable adjustment for intercalation kinetics and electron transport, as well as realize high chemical reactivity and redox-center optimization, leading to at least 200% increase in capacity. Using a water-organic electrolyte, the designed Zn-ion batteries with an ultrahigh-rate profile deliver a long-term durability (fivefold greater than pristine material) and an excellent energy density of approximate to 142 Wh kg(-1) (including masses of cathode and anode), thereby substantially outstripping most of the recently reported state-of-the-art zinc-ion batteries. This work proves the feasibility to realize the two-point modulation by using organic intercalants for exploiting high-performance new 2D materials.

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Type
research article
DOI
10.1002/adma.202203920
Web of Science ID

WOS:000869317600001

Author(s)
He, Weidong
Lin, Zedong
Zhao, Kangning  
Li, Yanlu
Meng, Chao
Li, Jiantao
Lee, Sungsik
Wu, Yongzhong
Hao, Xiaopeng
Date Issued

2022-10-17

Publisher

Wiley-V C H Verlag Gmbh

Published in
Advanced Materials
Subjects

Chemistry, Multidisciplinary

•

Chemistry, Physical

•

Nanoscience & Nanotechnology

•

Materials Science, Multidisciplinary

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Physics, Applied

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Physics, Condensed Matter

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Chemistry

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Science & Technology - Other Topics

•

Materials Science

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Physics

•

d-interspaces

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hybrid electrolytes

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organic-inorganic materials

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oxygen defects

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zn-ion batteries

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intercalation

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nanosheets

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batteries

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capacity

Editorial or Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LAS  
Available on Infoscience
November 7, 2022
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/192013
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