Imperial College London
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DrAndreasKafizas

Faculty of Natural Sciences, Department of Chemistry

Senior Lecturer
 
 
 
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Contact

 

+44 (0)20 7594 6752a.kafizas Website

 
 
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Location

 

301GMolecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Li:2020:10.1002/aenm.202000058,
author = {Li, J and McColl, K and Lu, X and Sathasivam, S and Dong, H and Kang, L and Li, Z and Zhao, S and Kafizas, AG and Wang, R and Brett, DJL and Shearing, PR and Cora, F and He, G and Carmalt, CJ and Parkin, IP},
doi = {10.1002/aenm.202000058},
journal = {Advanced Energy Materials},
pages = {1--14},
title = {Multi-scale investigations of delta-Ni0.25V2O5 center dot nH(2)O cathode materials in aqueous Zinc-Ion batteries},
url = {http://dx.doi.org/10.1002/aenm.202000058},
volume = {10},
year = {2020}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Costeffective and environmentfriendly aqueous zincion batteries (AZIBs) exhibit tremendous potential for application in gridscale energy storage systems but are limited by suitable cathode materials. Hydrated vanadium bronzes have gained significant attention for AZIBs and can be produced with a range of different preintercalated ions, allowing their properties to be optimized. However, gaining a detailed understanding of the energy storage mechanisms within these cathode materials remains a great challenge due to their complex crystallographic frameworks, limiting rational design from the perspective of enhanced Zn2+ diffusion over multiple length scales. Herein, a new class of hydrated porous δNi0.25V2O5.nH2O nanoribbons for use as an AZIB cathode is reported. The cathode delivers reversibility showing 402 mAh g−1 at 0.2 A g−1 and a capacity retention of 98% over 1200 cycles at 5 A g−1. A detailed investigation using experimental and computational approaches reveal that the host “δ” vanadate lattice has favorable Zn2+ diffusion properties, arising from the atomiclevel structure of the welldefined lattice channels. Furthermore, the microstructure of the asprepared cathodes is examined using multilength scale Xray computed tomography for the first time in AZIBs and the effective diffusion coefficient is obtained by imagebased modeling, illustrating favorable porosity and satisfactory tortuosity.
AU  - Li,J
AU  - McColl,K
AU  - Lu,X
AU  - Sathasivam,S
AU  - Dong,H
AU  - Kang,L
AU  - Li,Z
AU  - Zhao,S
AU  - Kafizas,AG
AU  - Wang,R
AU  - Brett,DJL
AU  - Shearing,PR
AU  - Cora,F
AU  - He,G
AU  - Carmalt,CJ
AU  - Parkin,IP
DO  - 10.1002/aenm.202000058
EP  - 14
PY  - 2020///
SN  - 1614-6832
SP  - 1
TI  - Multi-scale investigations of delta-Ni0.25V2O5 center dot nH(2)O cathode materials in aqueous Zinc-Ion batteries
T2  - Advanced Energy Materials
UR  - http://dx.doi.org/10.1002/aenm.202000058
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000516651400001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://onlinelibrary.wiley.com/doi/full/10.1002/aenm.202000058
UR  - http://hdl.handle.net/10044/1/77543
VL  - 10
ER  -
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