Chelating Ligands as Electrolyte Solvent for Rechargeable Zinc-Ion Batteries

Vivek Verma; R. Moesha Chan; Li Jia Yang; Sonal Kumar; Suchinda Sattayaporn; Rodney Chua; Yi Cai; Pinit Kidkhunthod; William Manalastas; Madhavi Srinivasan

doi:10.1021/acs.chemmater.0c04358

Chelating Ligands as Electrolyte Solvent for Rechargeable Zinc-Ion Batteries

Vivek Verma, R. Moesha Chan, Li Jia Yang, Sonal Kumar, Suchinda Sattayaporn, Rodney Chua, Yi Cai, Pinit Kidkhunthod, William Manalastas, Madhavi Srinivasan^*

^*Corresponding author for this work

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

71 Citations (Scopus)

Abstract

Rechargeable zinc-ion batteries (RZIBs) are mostly powered by aqueous electrolytes. However, uncontrolled water interactions often confer a small voltage window and poor battery capacity retention. Here, we explore replacing water with ethylene glycol as the primary solvent in zinc electrolyte formulations. The assembled batteries reveal suppressed electrolyte-induced parasitic reactions, leading to (1) expanded voltage stability windows up to 2.2 V, (2) prolonged zinc stripping/plating stability up to 2.4 times longer compared to the water-based counterparts, and (3) doubled cathode capacity retentions as observed in full-cell Zn-FeVO4 RZIBs. Using a combination of synchrotron EXAFS and FTIR, we investigate the molecular level salt-solvent interactions and explain how the chelation ability of EG ligands reduces parasitic reactions to enable the enhanced electrochemical performances. The structural insights should provide guidelines on the selection of salt, concentration, and chelating solvents for robust multivalent-ion battery systems.

Original language	English
Pages (from-to)	1330-1340
Number of pages	11
Journal	Chemistry of Materials
Volume	33
Issue number	4
DOIs	https://doi.org/10.1021/acs.chemmater.0c04358
Publication status	Published - Feb 23 2021
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2021 American Chemical Society.

ASJC Scopus Subject Areas

General Chemistry
General Chemical Engineering
Materials Chemistry

Access to Document

10.1021/acs.chemmater.0c04358

Cite this

@article{e08304ea0fd54addb2322419c5f6abc5,

title = "Chelating Ligands as Electrolyte Solvent for Rechargeable Zinc-Ion Batteries",

abstract = "Rechargeable zinc-ion batteries (RZIBs) are mostly powered by aqueous electrolytes. However, uncontrolled water interactions often confer a small voltage window and poor battery capacity retention. Here, we explore replacing water with ethylene glycol as the primary solvent in zinc electrolyte formulations. The assembled batteries reveal suppressed electrolyte-induced parasitic reactions, leading to (1) expanded voltage stability windows up to 2.2 V, (2) prolonged zinc stripping/plating stability up to 2.4 times longer compared to the water-based counterparts, and (3) doubled cathode capacity retentions as observed in full-cell Zn-FeVO4 RZIBs. Using a combination of synchrotron EXAFS and FTIR, we investigate the molecular level salt-solvent interactions and explain how the chelation ability of EG ligands reduces parasitic reactions to enable the enhanced electrochemical performances. The structural insights should provide guidelines on the selection of salt, concentration, and chelating solvents for robust multivalent-ion battery systems.",

author = "Vivek Verma and Chan, \{R. Moesha\} and \{Jia Yang\}, Li and Sonal Kumar and Suchinda Sattayaporn and Rodney Chua and Yi Cai and Pinit Kidkhunthod and William Manalastas and Madhavi Srinivasan",

note = "Publisher Copyright: {\textcopyright} 2021 American Chemical Society.",

year = "2021",

month = feb,

day = "23",

doi = "10.1021/acs.chemmater.0c04358",

language = "English",

volume = "33",

pages = "1330--1340",

journal = "Chemistry of Materials",

issn = "0897-4756",

publisher = "American Chemical Society",

number = "4",

}

TY - JOUR

T1 - Chelating Ligands as Electrolyte Solvent for Rechargeable Zinc-Ion Batteries

AU - Verma, Vivek

AU - Chan, R. Moesha

AU - Jia Yang, Li

AU - Kumar, Sonal

AU - Sattayaporn, Suchinda

AU - Chua, Rodney

AU - Cai, Yi

AU - Kidkhunthod, Pinit

AU - Manalastas, William

AU - Srinivasan, Madhavi

PY - 2021/2/23

Y1 - 2021/2/23

N2 - Rechargeable zinc-ion batteries (RZIBs) are mostly powered by aqueous electrolytes. However, uncontrolled water interactions often confer a small voltage window and poor battery capacity retention. Here, we explore replacing water with ethylene glycol as the primary solvent in zinc electrolyte formulations. The assembled batteries reveal suppressed electrolyte-induced parasitic reactions, leading to (1) expanded voltage stability windows up to 2.2 V, (2) prolonged zinc stripping/plating stability up to 2.4 times longer compared to the water-based counterparts, and (3) doubled cathode capacity retentions as observed in full-cell Zn-FeVO4 RZIBs. Using a combination of synchrotron EXAFS and FTIR, we investigate the molecular level salt-solvent interactions and explain how the chelation ability of EG ligands reduces parasitic reactions to enable the enhanced electrochemical performances. The structural insights should provide guidelines on the selection of salt, concentration, and chelating solvents for robust multivalent-ion battery systems.

AB - Rechargeable zinc-ion batteries (RZIBs) are mostly powered by aqueous electrolytes. However, uncontrolled water interactions often confer a small voltage window and poor battery capacity retention. Here, we explore replacing water with ethylene glycol as the primary solvent in zinc electrolyte formulations. The assembled batteries reveal suppressed electrolyte-induced parasitic reactions, leading to (1) expanded voltage stability windows up to 2.2 V, (2) prolonged zinc stripping/plating stability up to 2.4 times longer compared to the water-based counterparts, and (3) doubled cathode capacity retentions as observed in full-cell Zn-FeVO4 RZIBs. Using a combination of synchrotron EXAFS and FTIR, we investigate the molecular level salt-solvent interactions and explain how the chelation ability of EG ligands reduces parasitic reactions to enable the enhanced electrochemical performances. The structural insights should provide guidelines on the selection of salt, concentration, and chelating solvents for robust multivalent-ion battery systems.

UR - http://www.scopus.com/inward/record.url?scp=85100999621&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85100999621&partnerID=8YFLogxK

U2 - 10.1021/acs.chemmater.0c04358

DO - 10.1021/acs.chemmater.0c04358

M3 - Article

AN - SCOPUS:85100999621

SN - 0897-4756

VL - 33

SP - 1330

EP - 1340

JO - Chemistry of Materials

JF - Chemistry of Materials

IS - 4

ER -

Chelating Ligands as Electrolyte Solvent for Rechargeable Zinc-Ion Batteries

Abstract

Bibliographical note

ASJC Scopus Subject Areas

Access to Document

Other files and links

Fingerprint

Cite this