Investigation of Li+ insertion in columbite structured FeNb2O6 and rutile structured CrNb2O6 materials

Pushpaka B. Samarasingha; Chris I. Thomas; Helmer Fjellvåg

doi:10.1016/j.electacta.2014.12.004

Investigation of Li⁺ insertion in columbite structured FeNb₂O₆ and rutile structured CrNb₂O₆ materials

Pushpaka B. Samarasingha, Chris I. Thomas^*, Helmer Fjellvåg

^*Corresponding author for this work

Not published at Aalto University

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

8 Citations (Scopus)

Abstract

Lithium insertion in FeNb₂O₆ and CrNb₂O₆ has been investigated using the galvanostatic charge-discharge method and showed that more than half of the intercalated Li⁺ during first cycle is retained in the structure and is not de-intercalated during subsequent cycles. The effects of sintering on FeNb₂O₆ were investigated with lower applied temperatures yielding higher Li⁺ intercalation capability. Post galvanostatic XRD shows that the initial phase has been retained during cell cycling. Cyclic voltammetry reveals that chromium also takes part in electro-chemical activity in CrNb₂O₆.

Original language	English
Pages (from-to)	232-237
Number of pages	6
Journal	Electrochimica Acta
Volume	153
DOIs	https://doi.org/10.1016/j.electacta.2014.12.004
Publication status	Published - 20 Jan 2015
MoE publication type	A1 Journal article-refereed

Keywords

Batteries
cathode
columbite
intercalation
lithium
niobates

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10.1016/j.electacta.2014.12.004

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title = "Investigation of Li+ insertion in columbite structured FeNb2O6 and rutile structured CrNb2O6 materials",

abstract = "Lithium insertion in FeNb2O6 and CrNb2O6 has been investigated using the galvanostatic charge-discharge method and showed that more than half of the intercalated Li+ during first cycle is retained in the structure and is not de-intercalated during subsequent cycles. The effects of sintering on FeNb2O6 were investigated with lower applied temperatures yielding higher Li+ intercalation capability. Post galvanostatic XRD shows that the initial phase has been retained during cell cycling. Cyclic voltammetry reveals that chromium also takes part in electro-chemical activity in CrNb2O6.",

keywords = "Batteries, cathode, columbite, intercalation, lithium, niobates",

author = "Samarasingha, {Pushpaka B.} and Thomas, {Chris I.} and Helmer Fjellv{\aa}g",

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AU - Thomas, Chris I.

AU - Fjellvåg, Helmer

PY - 2015/1/20

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N2 - Lithium insertion in FeNb2O6 and CrNb2O6 has been investigated using the galvanostatic charge-discharge method and showed that more than half of the intercalated Li+ during first cycle is retained in the structure and is not de-intercalated during subsequent cycles. The effects of sintering on FeNb2O6 were investigated with lower applied temperatures yielding higher Li+ intercalation capability. Post galvanostatic XRD shows that the initial phase has been retained during cell cycling. Cyclic voltammetry reveals that chromium also takes part in electro-chemical activity in CrNb2O6.

AB - Lithium insertion in FeNb2O6 and CrNb2O6 has been investigated using the galvanostatic charge-discharge method and showed that more than half of the intercalated Li+ during first cycle is retained in the structure and is not de-intercalated during subsequent cycles. The effects of sintering on FeNb2O6 were investigated with lower applied temperatures yielding higher Li+ intercalation capability. Post galvanostatic XRD shows that the initial phase has been retained during cell cycling. Cyclic voltammetry reveals that chromium also takes part in electro-chemical activity in CrNb2O6.

KW - Batteries

KW - cathode

KW - columbite

KW - intercalation

KW - lithium

KW - niobates

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