Electrochemical analysis of the effect of Cr coating the LiV 3O8 cathode in a lithium ion battery with a lithium powder anode

Jae Ha Lee; Jun Kyu Lee; Woo Young Yoon

doi:10.1021/am401334b

Electrochemical analysis of the effect of Cr coating the LiV ₃O₈ cathode in a lithium ion battery with a lithium powder anode

Jae Ha Lee, Jun Kyu Lee, Woo Young Yoon

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

30 Citations (Scopus)

Abstract

Rechargeable 2032-coin-type cells were produced with Li-powder anodes (i.e., Li-powder electrodes, LPEs) and either Cr-coated lithium trivanadate (Li_1+xV₃O₈, LVO) cathodes or uncoated LVO cathodes. The initial discharge capacity of a cell with an LPE and a Cr-coated LVO cathode (Cell_coated) was 252 mAh g^-1 at a 0.2 C-rate and that of a cell with an LPE and an uncoated LVO cathode (Cell_bare) was 223 mAh g^-1. After the 50th cycle, Cell_coated exhibited higher capacity retention (about 89%) than Cell_bare (about 78%). Changes in the surface morphology of the Cr-coated LVO cathode were observed using scanning electron microscopy and energy-dispersive X-ray spectroscopy. The change in the electrical conductivity of the cell was measured using the impedance analysis. The electrochemical properties of the cells were also evaluated based on the differential capacity curve, voltage profiles, and capacity versus number of cycles.

Original language	English
Pages (from-to)	7058-7064
Number of pages	7
Journal	ACS Applied Materials and Interfaces
Volume	5
Issue number	15
DOIs	https://doi.org/10.1021/am401334b
Publication status	Published - 2013 Aug 14

Keywords

chromium coating
coating effect
lithium ion battery
lithium metal powder
lithium trivanadate

ASJC Scopus subject areas

General Materials Science

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1021/am401334b

Cite this

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title = "Electrochemical analysis of the effect of Cr coating the LiV 3O8 cathode in a lithium ion battery with a lithium powder anode",

abstract = "Rechargeable 2032-coin-type cells were produced with Li-powder anodes (i.e., Li-powder electrodes, LPEs) and either Cr-coated lithium trivanadate (Li1+xV3O8, LVO) cathodes or uncoated LVO cathodes. The initial discharge capacity of a cell with an LPE and a Cr-coated LVO cathode (Cellcoated) was 252 mAh g-1 at a 0.2 C-rate and that of a cell with an LPE and an uncoated LVO cathode (Cellbare) was 223 mAh g-1. After the 50th cycle, Cellcoated exhibited higher capacity retention (about 89%) than Cellbare (about 78%). Changes in the surface morphology of the Cr-coated LVO cathode were observed using scanning electron microscopy and energy-dispersive X-ray spectroscopy. The change in the electrical conductivity of the cell was measured using the impedance analysis. The electrochemical properties of the cells were also evaluated based on the differential capacity curve, voltage profiles, and capacity versus number of cycles.",

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author = "Lee, {Jae Ha} and Lee, {Jun Kyu} and Yoon, {Woo Young}",

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AU - Lee, Jae Ha

AU - Lee, Jun Kyu

AU - Yoon, Woo Young

PY - 2013/8/14

Y1 - 2013/8/14

N2 - Rechargeable 2032-coin-type cells were produced with Li-powder anodes (i.e., Li-powder electrodes, LPEs) and either Cr-coated lithium trivanadate (Li1+xV3O8, LVO) cathodes or uncoated LVO cathodes. The initial discharge capacity of a cell with an LPE and a Cr-coated LVO cathode (Cellcoated) was 252 mAh g-1 at a 0.2 C-rate and that of a cell with an LPE and an uncoated LVO cathode (Cellbare) was 223 mAh g-1. After the 50th cycle, Cellcoated exhibited higher capacity retention (about 89%) than Cellbare (about 78%). Changes in the surface morphology of the Cr-coated LVO cathode were observed using scanning electron microscopy and energy-dispersive X-ray spectroscopy. The change in the electrical conductivity of the cell was measured using the impedance analysis. The electrochemical properties of the cells were also evaluated based on the differential capacity curve, voltage profiles, and capacity versus number of cycles.

AB - Rechargeable 2032-coin-type cells were produced with Li-powder anodes (i.e., Li-powder electrodes, LPEs) and either Cr-coated lithium trivanadate (Li1+xV3O8, LVO) cathodes or uncoated LVO cathodes. The initial discharge capacity of a cell with an LPE and a Cr-coated LVO cathode (Cellcoated) was 252 mAh g-1 at a 0.2 C-rate and that of a cell with an LPE and an uncoated LVO cathode (Cellbare) was 223 mAh g-1. After the 50th cycle, Cellcoated exhibited higher capacity retention (about 89%) than Cellbare (about 78%). Changes in the surface morphology of the Cr-coated LVO cathode were observed using scanning electron microscopy and energy-dispersive X-ray spectroscopy. The change in the electrical conductivity of the cell was measured using the impedance analysis. The electrochemical properties of the cells were also evaluated based on the differential capacity curve, voltage profiles, and capacity versus number of cycles.

KW - chromium coating

KW - coating effect

KW - lithium ion battery

KW - lithium metal powder

KW - lithium trivanadate

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