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J. Electrochem. Sci. Technol > Epub ahead of print
DOI: https://doi.org/10.33961/jecst.2021.00920    [Epub ahead of print]
Published online December 17, 2021.
Challenges and Design Strategies for Conversion-Based Anode Materials for Lithium- and Sodium-Ion Batteries
Hyunwoo Kim, Dong In Kim, Won-Sub Yoon
Department of Energy Science, Sungkyunkwan University, Suwon 16419, Republic of Korea
Correspondence:  Won-Sub Yoon,
Email: wsyoon@skku.edu
Received: 15 September 2021   • Accepted: 21 October 2021
Abstract
Although lithium-ion batteries are currently the most reliable power supply system for various mobile applications, further improvement in energy density is still required as the need for batteries in large energy-consuming devices is rapidly growing. However, in the anode, the most widely commercialized graphite-based anode materials almost face theoretical limitations. In addition, sodium-ion batteries have been actively studied to replace expensive charge carriers with cheaper ones. Accordingly, conversion-based materials have been extensively studied as high-capacity anode materials in both lithiumion batteries and sodium-ion batteries because their theoretical capacity is twice or thrice higher than that of insertion-based materials. This review will provide a comprehensive understanding of conversion-based materials, including basic charge storage behaviors, critical drawbacks that should be overcome, and practical material design for high-performance.
Key Words: Lithium-ion Battery, Sodium-ion Battery, Extra Capacity, Anode Materials, Negative Fading


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