31 Dec '17, 11am

New strategy for enabling Li-metal anodes in high capacity batteries; trapping #lithium in microcages

New strategy for enabling Li-metal anodes in high capacity batteries; trapping #lithium in microcages

New strategy for enabling Li-metal anodes in high capacity batteries; trapping Li in microcages 31 December 2017 Researchers in China are proposing a new strategy to retard dendrite formation on Li metal anodes in high-capacity Li-ion batteries. In a paper published in the ACS journal Nano Letters , they describe trapping Li within hollow silica microspheres with a carbon nanotube core to suppress dendrite growth. Such an electrode exhibited a dendrite-free morphology after plating 2 mA h cm–2 of Li. Because the dendrite growth is suppressed, the as-obtained electrode maintains a high plating/stripping efficiency of 99% over 200 cycles. … lithium metal batteries (LMBs) have received much attention because of their high energy density. In LMBs, the high specific capacity (3860 mA h g−1 ) and low electrochemical potential (−3.04 V vs standard hydrogen electrode) of Li metal ...

Full article: http://www.greencarcongress.com/2017/12/20171231-zuo.html

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