New anode material set to boost lithium-ion battery capacity

New anode material set to boost lithium-ion battery capacity
Cross-sectional schematic view showing the detailed structural characteristics of a SGC hybrid particle. Credit: UNIST

A new approach developed by a team of researchers, led by Prof. Jaephil Cho (School of Energy and Chemical Engineering) could hold the key to greatly improving the performance of commercial lithium-ion batteries.

Prof. Cho and his research team have developed a new type that would be used in place of a conventional graphite anode, which they claim will lead to lighter and longer-lasting batteries for everything from personal devices to electric vehicles.

In the study, the research team has demonstrated the feasibility of a next-generation hybrid anode using silicon-nanolayer-embedded graphite/carbon. They report that this architecture allows compatibility between silicon and natural graphite and addresses the issues of severe side reactions caused by structural failure of crumbled graphite dust and uncombined residue of silicon particles by conventional mechanical milling.

This newly-developed material has been manifactured with increase in graphite content in composite by 45%. The research team has also developed new equipment, which is capable of producing 300kg in 6 hours per batch using a small amount of silane gas (SiH4). Such simple procedure is highly esteemed, as it ensures competitive price.

They report that the silicon/ composite is mass-producible and it has superior battery performances with industrial electrode density, high areal capacity, and low amounts of binder. The findings of the research have been published in the August issue of the prestigious energy journal Nature Energy.


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Next generation anode to improve lithium-ion batteries

More information: Minseong Ko, Sujong Chae, Jiyoung Ma, Namhyung Kim, Hyun-Wook Lee, Yi Cui, and Jaephil Cho, "Scalable synthesis of silicon-nanolayer-embedded graphite for high-energy lithium-ion batteries." Nature Eonergy, (2016). DOI: 10.1038/nenergy.2016.113
Journal information: Nature Energy

Citation: New anode material set to boost lithium-ion battery capacity (2016, December 13) retrieved 14 October 2019 from https://phys.org/news/2016-12-anode-material-boost-lithium-ion-battery.html
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Dec 15, 2016
It is getting hard to keep up with the advances. It must really be a challenge for battery manufacturers like Tesla.

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