Potentiostatic intermittent titration technique (PITT) for spherical particles with finite interfacial kinetics

Juchuan Li; Fuqian Yang; Xingcheng Xiao; Mark W. Verbrugge; Yang Tse Cheng

doi:10.1016/j.electacta.2012.04.050

Potentiostatic intermittent titration technique (PITT) for spherical particles with finite interfacial kinetics

Juchuan Li, Fuqian Yang, Xingcheng Xiao, Mark W. Verbrugge, Yang Tse Cheng

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

58 Scopus citations

Abstract

The potentiostatic intermittent titration technique (PITT) is an electroanalytical method that has been widely used to study diffusion of solutes (such as lithium) in electrode materials. Here, we extend the conventional PITT method to account for finite interfacial reaction kinetics and derive analytic equations for electric current under PITT operations. Using the modified PITT, the lithium diffusion coefficient in host materials and the interfacial reaction kinetics can be determined simultaneously. We demonstrate this modified PITT by an example of lithium diffusion in graphite (mesocarbon microbeads, MCMB) and show the improvements of the modified PITT theory over the conventional PITT for investigating the kinetics of electrodes comprising spherical particles.

Original language	English
Pages (from-to)	56-61
Number of pages	6
Journal	Electrochimica Acta
Volume	75
DOIs	https://doi.org/10.1016/j.electacta.2012.04.050
State	Published - Jul 30 2012

Bibliographical note

Funding Information:
Financial support from NSF (CMMI # 1000726 ) and General Motors R&D Center is greatly acknowledged.

Funding

Financial support from NSF (CMMI # 1000726 ) and General Motors R&D Center is greatly acknowledged.

Funders	Funder number
General Motors R&D Center
National Science Foundation (NSF)	CMMI # 1000726

Keywords

Diffusion coefficient
Graphite (MCMB)
Interfacial kinetics
Lithium-ion battery
Potentiostatic intermittent titration technique (PITT)
Spherical particles
Surface reaction

ASJC Scopus subject areas

General Chemical Engineering
Electrochemistry

UN SDGs

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

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10.1016/j.electacta.2012.04.050

Cite this

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title = "Potentiostatic intermittent titration technique (PITT) for spherical particles with finite interfacial kinetics",

abstract = "The potentiostatic intermittent titration technique (PITT) is an electroanalytical method that has been widely used to study diffusion of solutes (such as lithium) in electrode materials. Here, we extend the conventional PITT method to account for finite interfacial reaction kinetics and derive analytic equations for electric current under PITT operations. Using the modified PITT, the lithium diffusion coefficient in host materials and the interfacial reaction kinetics can be determined simultaneously. We demonstrate this modified PITT by an example of lithium diffusion in graphite (mesocarbon microbeads, MCMB) and show the improvements of the modified PITT theory over the conventional PITT for investigating the kinetics of electrodes comprising spherical particles.",

keywords = "Diffusion coefficient, Graphite (MCMB), Interfacial kinetics, Lithium-ion battery, Potentiostatic intermittent titration technique (PITT), Spherical particles, Surface reaction",

author = "Juchuan Li and Fuqian Yang and Xingcheng Xiao and Verbrugge, {Mark W.} and Cheng, {Yang Tse}",

note = "Funding Information: Financial support from NSF (CMMI # 1000726 ) and General Motors R&D Center is greatly acknowledged. ",

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doi = "10.1016/j.electacta.2012.04.050",

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T1 - Potentiostatic intermittent titration technique (PITT) for spherical particles with finite interfacial kinetics

AU - Li, Juchuan

AU - Yang, Fuqian

AU - Xiao, Xingcheng

AU - Verbrugge, Mark W.

AU - Cheng, Yang Tse

N1 - Funding Information: Financial support from NSF (CMMI # 1000726 ) and General Motors R&D Center is greatly acknowledged.

PY - 2012/7/30

Y1 - 2012/7/30

N2 - The potentiostatic intermittent titration technique (PITT) is an electroanalytical method that has been widely used to study diffusion of solutes (such as lithium) in electrode materials. Here, we extend the conventional PITT method to account for finite interfacial reaction kinetics and derive analytic equations for electric current under PITT operations. Using the modified PITT, the lithium diffusion coefficient in host materials and the interfacial reaction kinetics can be determined simultaneously. We demonstrate this modified PITT by an example of lithium diffusion in graphite (mesocarbon microbeads, MCMB) and show the improvements of the modified PITT theory over the conventional PITT for investigating the kinetics of electrodes comprising spherical particles.

AB - The potentiostatic intermittent titration technique (PITT) is an electroanalytical method that has been widely used to study diffusion of solutes (such as lithium) in electrode materials. Here, we extend the conventional PITT method to account for finite interfacial reaction kinetics and derive analytic equations for electric current under PITT operations. Using the modified PITT, the lithium diffusion coefficient in host materials and the interfacial reaction kinetics can be determined simultaneously. We demonstrate this modified PITT by an example of lithium diffusion in graphite (mesocarbon microbeads, MCMB) and show the improvements of the modified PITT theory over the conventional PITT for investigating the kinetics of electrodes comprising spherical particles.

KW - Diffusion coefficient

KW - Graphite (MCMB)

KW - Interfacial kinetics

KW - Lithium-ion battery

KW - Potentiostatic intermittent titration technique (PITT)

KW - Spherical particles

KW - Surface reaction

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M3 - Article

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VL - 75

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EP - 61

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Potentiostatic intermittent titration technique (PITT) for spherical particles with finite interfacial kinetics

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

UN SDGs

Access to Document

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