Trimethyl phosphate based neutral ligand room temperature ionic liquids for electrodeposition of rare earth elements

Prashant Bagri; Huimin Luo; Ilja Popovs; Bishnu P. Thapaliya; Jeremy Dehaudt; Sheng Dai

doi:10.1016/j.elecom.2018.10.001

Trimethyl phosphate based neutral ligand room temperature ionic liquids for electrodeposition of rare earth elements

Prashant Bagri, Huimin Luo, Ilja Popovs, Bishnu P. Thapaliya, Jeremy Dehaudt, Sheng Dai

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

25 Scopus citations

Abstract

In this communication, a new class of task-specific ionic liquids (ILs) with cationic rare earth elements (REEs) is reported. These novel ILs have a wide electrochemical window of about 6 V, enabling direct electrodeposition of REE metals at room temperature. The ILs were prepared by dissolving bis(trifluoromethane)sulfonimide (NTf₂ ⁻) based rare earth salts (Ln(NTf₂)₃) (Ln:Lanthanide) in trimethyl phosphate (TMP) neutral ligand. Specifically, four REEs (Nd, Dy, Gd, and Pr) have been investigated in TMP based IL systems. All four metals were successfully deposited at room temperature. This demonstrates the applicability of the IL systems for electrodeposition of a wide range of REEs, which opens a new avenue of research for the quest to supplant high temperature molten salt systems for rare earth deposition.

Original language	English
Pages (from-to)	88-92
Number of pages	5
Journal	Electrochemistry Communications
Volume	96
DOIs	https://doi.org/10.1016/j.elecom.2018.10.001
State	Published - Nov 2018

Funding

This research was funded by the Critical Materials Institute , an Energy Innovation Hub funded by the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Advanced Manufacturing Office.

Funders	Funder number
Critical Materials Institute
U.S. Department of Energy
Advanced Manufacturing Office
Office of Energy Efficiency and Renewable Energy

Keywords

Electrodeposition
Ionic liquids
Neutral ligand
Rare earth elements
Room temperature

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10.1016/j.elecom.2018.10.001

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title = "Trimethyl phosphate based neutral ligand room temperature ionic liquids for electrodeposition of rare earth elements",

abstract = "In this communication, a new class of task-specific ionic liquids (ILs) with cationic rare earth elements (REEs) is reported. These novel ILs have a wide electrochemical window of about 6 V, enabling direct electrodeposition of REE metals at room temperature. The ILs were prepared by dissolving bis(trifluoromethane)sulfonimide (NTf2 −) based rare earth salts (Ln(NTf2)3) (Ln:Lanthanide) in trimethyl phosphate (TMP) neutral ligand. Specifically, four REEs (Nd, Dy, Gd, and Pr) have been investigated in TMP based IL systems. All four metals were successfully deposited at room temperature. This demonstrates the applicability of the IL systems for electrodeposition of a wide range of REEs, which opens a new avenue of research for the quest to supplant high temperature molten salt systems for rare earth deposition.",

keywords = "Electrodeposition, Ionic liquids, Neutral ligand, Rare earth elements, Room temperature",

author = "Prashant Bagri and Huimin Luo and Ilja Popovs and Thapaliya, {Bishnu P.} and Jeremy Dehaudt and Sheng Dai",

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AU - Bagri, Prashant

AU - Luo, Huimin

AU - Popovs, Ilja

AU - Thapaliya, Bishnu P.

AU - Dehaudt, Jeremy

AU - Dai, Sheng

PY - 2018/11

Y1 - 2018/11

N2 - In this communication, a new class of task-specific ionic liquids (ILs) with cationic rare earth elements (REEs) is reported. These novel ILs have a wide electrochemical window of about 6 V, enabling direct electrodeposition of REE metals at room temperature. The ILs were prepared by dissolving bis(trifluoromethane)sulfonimide (NTf2 −) based rare earth salts (Ln(NTf2)3) (Ln:Lanthanide) in trimethyl phosphate (TMP) neutral ligand. Specifically, four REEs (Nd, Dy, Gd, and Pr) have been investigated in TMP based IL systems. All four metals were successfully deposited at room temperature. This demonstrates the applicability of the IL systems for electrodeposition of a wide range of REEs, which opens a new avenue of research for the quest to supplant high temperature molten salt systems for rare earth deposition.

AB - In this communication, a new class of task-specific ionic liquids (ILs) with cationic rare earth elements (REEs) is reported. These novel ILs have a wide electrochemical window of about 6 V, enabling direct electrodeposition of REE metals at room temperature. The ILs were prepared by dissolving bis(trifluoromethane)sulfonimide (NTf2 −) based rare earth salts (Ln(NTf2)3) (Ln:Lanthanide) in trimethyl phosphate (TMP) neutral ligand. Specifically, four REEs (Nd, Dy, Gd, and Pr) have been investigated in TMP based IL systems. All four metals were successfully deposited at room temperature. This demonstrates the applicability of the IL systems for electrodeposition of a wide range of REEs, which opens a new avenue of research for the quest to supplant high temperature molten salt systems for rare earth deposition.

KW - Electrodeposition

KW - Ionic liquids

KW - Neutral ligand

KW - Rare earth elements

KW - Room temperature

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M3 - Article

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SN - 1388-2481

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SP - 88

EP - 92

JO - Electrochemistry Communications

JF - Electrochemistry Communications

ER -

Trimethyl phosphate based neutral ligand room temperature ionic liquids for electrodeposition of rare earth elements

Abstract

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Keywords

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