Electrochemical impedance studies of capacity fading of electrodeposited ZnO conversion anodes in Li-ion battery

G. K. Kiran; Tirupathi Rao Penki; N. Munichandraiah; P. Vishnu Kamath

doi:10.1007/s12034-017-1399-8

Electrochemical impedance studies of capacity fading of electrodeposited ZnO conversion anodes in Li-ion battery

G. K. Kiran, Tirupathi Rao Penki, N. Munichandraiah, P. Vishnu Kamath

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

3 Scopus citations

Abstract

Electrodeposited ZnO coatings suffer severe capacity fading when used as conversion anodes in sealed Li cells. Capacity fading is attributed to (i) the large charge transfer resistance, R_ct (300-700 Ω) and (ii) the low Li⁺ ion diffusion coefficient, D⁺_Li (10^-15 to 10^-13 cm² s^-1). The measured value of R_ct is nearly 10 times higher and D⁺_Li 10-100 times lower than the corresponding values for Cu₂O, which delivers a stable reversible capacity.

Original language	English
Pages (from-to)	427-434
Number of pages	8
Journal	Bulletin of Materials Science
Volume	40
Issue number	3
DOIs	https://doi.org/10.1007/s12034-017-1399-8
State	Published - Jun 2017
Externally published	Yes

Bibliographical note

Publisher Copyright:
© Indian Academy of Sciences.

Funding

We thank the Department of Science and Technology, Government of India, for financial support through the award of a Ramanna Fellowship to PVK.

Funders	Funder number
Department of Science and Technology, Ministry of Science and Technology, India

Keywords

Anode
Capacity fading
Electrodeposition
Li-ion battery
ZnO

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10.1007/s12034-017-1399-8

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abstract = "Electrodeposited ZnO coatings suffer severe capacity fading when used as conversion anodes in sealed Li cells. Capacity fading is attributed to (i) the large charge transfer resistance, Rct (300-700 Ω) and (ii) the low Li+ ion diffusion coefficient, D+Li (10-15 to 10-13 cm2 s-1). The measured value of Rct is nearly 10 times higher and D+Li 10-100 times lower than the corresponding values for Cu2O, which delivers a stable reversible capacity.",

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AU - Kiran, G. K.

AU - Penki, Tirupathi Rao

AU - Munichandraiah, N.

AU - Kamath, P. Vishnu

N1 - Publisher Copyright: © Indian Academy of Sciences.

PY - 2017/6

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N2 - Electrodeposited ZnO coatings suffer severe capacity fading when used as conversion anodes in sealed Li cells. Capacity fading is attributed to (i) the large charge transfer resistance, Rct (300-700 Ω) and (ii) the low Li+ ion diffusion coefficient, D+Li (10-15 to 10-13 cm2 s-1). The measured value of Rct is nearly 10 times higher and D+Li 10-100 times lower than the corresponding values for Cu2O, which delivers a stable reversible capacity.

AB - Electrodeposited ZnO coatings suffer severe capacity fading when used as conversion anodes in sealed Li cells. Capacity fading is attributed to (i) the large charge transfer resistance, Rct (300-700 Ω) and (ii) the low Li+ ion diffusion coefficient, D+Li (10-15 to 10-13 cm2 s-1). The measured value of Rct is nearly 10 times higher and D+Li 10-100 times lower than the corresponding values for Cu2O, which delivers a stable reversible capacity.

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KW - Capacity fading

KW - Electrodeposition

KW - Li-ion battery

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Electrochemical impedance studies of capacity fading of electrodeposited ZnO conversion anodes in Li-ion battery

Abstract

Bibliographical note

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Keywords

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