Side‐View Operando Optical Microscopy Analysis of a Graphite Anode to Study Its Kinetic Hysteresis

Sujin Kang; Su Jeong Yeom

doi:10.1002/cssc.201903289

journal article Mar 05, 2020

Side‐View Operando Optical Microscopy Analysis of a Graphite Anode to Study Its Kinetic Hysteresis

Sujin Kang Su Jeong Yeom

ChemSusChem Vol. 13 No. 6 pp. 1480-1484 · Wiley

View at Publisher Save 10.1002/cssc.201903289

Abstract

AbstractOperando analyses have provided several breakthroughs in the construction of high‐performance materials and devices, including energy storage systems. However, despite the advances in electrode engineering, the formidable issues of lithium intercalation and deintercalation kinetics cannot be investigated by using planar observations. This study concerns side‐view operando observation by optical microscopy of a graphite anode based on its color changes during electrochemical lithiation. Since the graphite color varies according to the optical energy gap during lithiation and delithiation, this technique can be used to study the corresponding charge–discharge kinetics. In addition, the cell configuration uses liquid electrolytes similar to commercial cells, allowing practical application. Furthermore, this side‐view observation has shown that microscale spatial variations in rate and composition control the insertion and deinsertion, revealing the kinetics throughout the whole electrode. The results of this study could enhance the fundamental understanding of the kinetics of battery materials.

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Metrics

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Citations

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References

Details

Published: Mar 05, 2020
Vol/Issue: 13(6)
Pages: 1480-1484
License: View

Authors

S

Sujin Kang

School of Energy and Chemical Engineering Ulsan National Institute of Science and Technology (UNIST) 50 UNIST-gil, Ulju-gun Ulsan 44919 Republic of Korea

S

Su Jeong Yeom

School of Energy and Chemical Engineering Ulsan National Institute of Science and Technology (UNIST) 50 UNIST-gil, Ulju-gun Ulsan 44919 Republic of Korea

Funding

National Research Foundation of Korea Award: 2019R1C1C1009324

Cite This Article

Sujin Kang, Su Jeong Yeom (2020). Side‐View Operando Optical Microscopy Analysis of a Graphite Anode to Study Its Kinetic Hysteresis. ChemSusChem, 13(6), 1480-1484. https://doi.org/10.1002/cssc.201903289

Side‐View Operando Optical Microscopy Analysis of a Graphite Anode to Study Its Kinetic Hysteresis

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