Issue Date: September 12, 2011
Algae Gum Amps Li-Ion Batteries
Lithium-ion battery technology may get a boost from a gummy substance commonly found in brown algae (Science, DOI: 10.1126/science.1209150). Traditional graphite electrodes in Li-ion batteries suffer from storage capacity problems and short lifetimes. Additionally, graphite electrodes are bound with toxic and environmentally unfriendly polyvinylidene fluoride, which further requires toxic solvents such as N-methyl-2-pyrrolidone. Scientists would like to replace graphite with silicon, which is cheap, plentiful, and has 10 times the theoretical charge capacity of . . .
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