Multiscalar Investigation of FeVO4 Conversion Cathode for a Low Concentration Zn(CF3SO3)2 Rechargeable Zn-Ion Aqueous Battery

Sonal Kumar; Vivek Verma; Rodney Chua; Hao Ren; Pinit Kidkhunthod; Catleya Rojviriya; Suchinda Sattayaporn; Frank M.F. de Groot; William Manalastas; Madhavi Srinivasan

doi:10.1002/batt.202000018

Multiscalar Investigation of FeVO₄ Conversion Cathode for a Low Concentration Zn(CF₃SO₃)₂ Rechargeable Zn-Ion Aqueous Battery

Sonal Kumar
, Vivek Verma
, Rodney Chua
, Hao Ren
, Pinit Kidkhunthod
, Catleya Rojviriya
, Suchinda Sattayaporn
, Frank M.F. de Groot
, William Manalastas
, Madhavi Srinivasan^*

^*Corresponding author for this work

Inorganic Chemistry and Catalysis

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

Battery cathode materials operating on multivalent-ion intercalation are prone to short operational lifetimes, traditionally explained to be due to poor solid-state diffusion. Here, we overcome this problem by using a conversion-type cathode material and demonstrate the benefits in a FeVO₄ host structure. The rechargeable Zn-ion battery exhibits stability for an unprecedented operational lifetime of 57 days with a high capacity of 272 mAh g⁻¹ (60 mA g⁻¹) over 140 cycles. We use a combination of synchrotron-based XAS, SRXTM, Raman, XRD and HRTEM techniques to elucidate the cathode material evolution at multilength-scale for understanding the Zn-ion storage mechanism. We further highlight the benefits of using a low-salt concentration electrolyte and pH-consideration analysis in aqueous battery development, the optimization of which leads to a 4-fold increase in battery performance as compared to conventional high-salt concentration electrolyte formulations.

Original language	English
Pages (from-to)	619-630
Number of pages	12
Journal	Batteries and Supercaps
Volume	3
Issue number	7
DOIs	https://doi.org/10.1002/batt.202000018
Publication status	Published - 1 Jul 2020

Bibliographical note

Funding Information:
This work was financially supported by the National Research Foundation of Singapore (NRF) Investigatorship Award Number NRFI2017-08/NRF2016NRF-NRFI001-22. S.K. and V.V. would like to thank Dr. Samuel Morris (NTU, Singapore) for insightful discussions on X-ray diffraction data and Facility for Analysis Characterization Testing and Simulation-NTU, Singapore for the usage of characterization facility. We also thank Dr. Phakkhananan Pakawanit and Chalermluck Phoovasawat for their assistance in operating synchrotron-beamline stations at SLRI, Thailand; and Dr. Arun Nagasubramanian (TUM-CREATE, Singapore) for fruitful discussions.

Publisher Copyright:
© 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Funding

This work was financially supported by the National Research Foundation of Singapore (NRF) Investigatorship Award Number NRFI2017-08/NRF2016NRF-NRFI001-22. S.K. and V.V. would like to thank Dr. Samuel Morris (NTU, Singapore) for insightful discussions on X-ray diffraction data and Facility for Analysis Characterization Testing and Simulation-NTU, Singapore for the usage of characterization facility. We also thank Dr. Phakkhananan Pakawanit and Chalermluck Phoovasawat for their assistance in operating synchrotron-beamline stations at SLRI, Thailand; and Dr. Arun Nagasubramanian (TUM-CREATE, Singapore) for fruitful discussions.

Keywords

aqueous zinc-ion battery
conversion mechanism
electrolyte pH
tomography
x-ray absorption spectroscopy

Access to Document

10.1002/batt.202000018

Batteries Supercaps - 2020 - Kumar - Multiscalar Investigation of FeVO4 Conversion Cathode for a Low Concentration ZnFinal published version, 12.4 MBLicence: Taverne

Cite this

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title = "Multiscalar Investigation of FeVO4 Conversion Cathode for a Low Concentration Zn(CF3SO3)2 Rechargeable Zn-Ion Aqueous Battery",

abstract = "Battery cathode materials operating on multivalent-ion intercalation are prone to short operational lifetimes, traditionally explained to be due to poor solid-state diffusion. Here, we overcome this problem by using a conversion-type cathode material and demonstrate the benefits in a FeVO4 host structure. The rechargeable Zn-ion battery exhibits stability for an unprecedented operational lifetime of 57 days with a high capacity of 272 mAh g−1 (60 mA g−1) over 140 cycles. We use a combination of synchrotron-based XAS, SRXTM, Raman, XRD and HRTEM techniques to elucidate the cathode material evolution at multilength-scale for understanding the Zn-ion storage mechanism. We further highlight the benefits of using a low-salt concentration electrolyte and pH-consideration analysis in aqueous battery development, the optimization of which leads to a 4-fold increase in battery performance as compared to conventional high-salt concentration electrolyte formulations.",

keywords = "aqueous zinc-ion battery, conversion mechanism, electrolyte pH, tomography, x-ray absorption spectroscopy",

author = "Sonal Kumar and Vivek Verma and Rodney Chua and Hao Ren and Pinit Kidkhunthod and Catleya Rojviriya and Suchinda Sattayaporn and \{de Groot\}, \{Frank M.F.\} and William Manalastas and Madhavi Srinivasan",

note = "Funding Information: This work was financially supported by the National Research Foundation of Singapore (NRF) Investigatorship Award Number NRFI2017-08/NRF2016NRF-NRFI001-22. S.K. and V.V. would like to thank Dr. Samuel Morris (NTU, Singapore) for insightful discussions on X-ray diffraction data and Facility for Analysis Characterization Testing and Simulation-NTU, Singapore for the usage of characterization facility. We also thank Dr. Phakkhananan Pakawanit and Chalermluck Phoovasawat for their assistance in operating synchrotron-beamline stations at SLRI, Thailand; and Dr. Arun Nagasubramanian (TUM-CREATE, Singapore) for fruitful discussions. Publisher Copyright: {\textcopyright} 2020 Wiley-VCH Verlag GmbH \& Co. KGaA, Weinheim",

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AU - Kumar, Sonal

AU - Verma, Vivek

AU - Chua, Rodney

AU - Ren, Hao

AU - Kidkhunthod, Pinit

AU - Rojviriya, Catleya

AU - Sattayaporn, Suchinda

AU - de Groot, Frank M.F.

AU - Manalastas, William

AU - Srinivasan, Madhavi

N1 - Funding Information: This work was financially supported by the National Research Foundation of Singapore (NRF) Investigatorship Award Number NRFI2017-08/NRF2016NRF-NRFI001-22. S.K. and V.V. would like to thank Dr. Samuel Morris (NTU, Singapore) for insightful discussions on X-ray diffraction data and Facility for Analysis Characterization Testing and Simulation-NTU, Singapore for the usage of characterization facility. We also thank Dr. Phakkhananan Pakawanit and Chalermluck Phoovasawat for their assistance in operating synchrotron-beamline stations at SLRI, Thailand; and Dr. Arun Nagasubramanian (TUM-CREATE, Singapore) for fruitful discussions. Publisher Copyright: © 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

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N2 - Battery cathode materials operating on multivalent-ion intercalation are prone to short operational lifetimes, traditionally explained to be due to poor solid-state diffusion. Here, we overcome this problem by using a conversion-type cathode material and demonstrate the benefits in a FeVO4 host structure. The rechargeable Zn-ion battery exhibits stability for an unprecedented operational lifetime of 57 days with a high capacity of 272 mAh g−1 (60 mA g−1) over 140 cycles. We use a combination of synchrotron-based XAS, SRXTM, Raman, XRD and HRTEM techniques to elucidate the cathode material evolution at multilength-scale for understanding the Zn-ion storage mechanism. We further highlight the benefits of using a low-salt concentration electrolyte and pH-consideration analysis in aqueous battery development, the optimization of which leads to a 4-fold increase in battery performance as compared to conventional high-salt concentration electrolyte formulations.

AB - Battery cathode materials operating on multivalent-ion intercalation are prone to short operational lifetimes, traditionally explained to be due to poor solid-state diffusion. Here, we overcome this problem by using a conversion-type cathode material and demonstrate the benefits in a FeVO4 host structure. The rechargeable Zn-ion battery exhibits stability for an unprecedented operational lifetime of 57 days with a high capacity of 272 mAh g−1 (60 mA g−1) over 140 cycles. We use a combination of synchrotron-based XAS, SRXTM, Raman, XRD and HRTEM techniques to elucidate the cathode material evolution at multilength-scale for understanding the Zn-ion storage mechanism. We further highlight the benefits of using a low-salt concentration electrolyte and pH-consideration analysis in aqueous battery development, the optimization of which leads to a 4-fold increase in battery performance as compared to conventional high-salt concentration electrolyte formulations.

KW - aqueous zinc-ion battery

KW - conversion mechanism

KW - electrolyte pH

KW - tomography

KW - x-ray absorption spectroscopy

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