Wednesday, 11 March 2020 11:01

Samsung team unveils new design for all-solid-state battery

The team behind the new all-solid-state battery research: Yuichi Aihara, principal engineer from SRJ, Yong-Gun Lee, principal researcher, and Dongmin Im, leader of the project from SAIT. The team behind the new all-solid-state battery research: Yuichi Aihara, principal engineer from SRJ, Yong-Gun Lee, principal researcher, and Dongmin Im, leader of the project from SAIT. Courtesy Samsung

A team of researchers from the Samsung Advanced Institute of Technology and the Samsung R&D Institute Japan has proposed the use of a silver-carbon (Ag-C) composite layer as the anode for an all-solid-state battery which it says can improve the life, capacity, longevity and safety.

The team published their findings in the scientific journal Nature Energy on Monday.

A statement from Samsung pointed out that the lithium metal anodes often used in all-solid-state batteries could trigger the growth of dendrites that would cause a reduction in lifespan and safety.

Dongmin Im, master at SAIT’s Next Generation Battery Lab and the leader of the project explained, “The product of this study could be a seed technology for safer, high-performance batteries of the future.

"Going forward, we will continue to develop and refine all-solid-state battery materials and manufacturing technologies to help take EV battery innovation to the next level.”

The Samsung announcement comes in the wake of a report that the Canadian utility firm, Hydro-Québec, would begin work on commercialising an all-solid-state battery co-invented by Dr John Goodenough, a professor at The University of Texas in Austin, and Dr Maria Helena Braga, an associate professor at the University of Porto in Portugal.

Back in 2017, when the all-solid-state battery prototype was developed, Dr Goodenough said he believed it could be brought to market in three years. The battery that he and Braga developed is a low-cost all-solid-state battery that will not combust. Battery life is long and charging is fast.

The Samsung team used a 5µm (micrometers) thick Ag-C layer in a prototype pouch cell. The ultra-thin Ag-C nanocomposite layer allowed the reduction of the thickness of the anode and an increase in energy density up to 900Wh/L.

The prototype was also about 50% smaller by volume than a conventional lithium-ion battery.

Samsung said the research would help increase the use of electric vehicles. "The prototype pouch cell that the team developed would enable an EV to travel up to 800km on a single charge, and features a cycle life of over 1000 charges," the company said.

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Sam Varghese

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Sam Varghese has been writing for iTWire since 2006, a year after the site came into existence. For nearly a decade thereafter, he wrote mostly about free and open source software, based on his own use of this genre of software. Since May 2016, he has been writing across many areas of technology. He has been a journalist for nearly 40 years in India (Indian Express and Deccan Herald), the UAE (Khaleej Times) and Australia (Daily Commercial News (now defunct) and The Age). His personal blog is titled Irregular Expression.

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