Highly elastic polyrotaxane-polyacrylic acid polymers hold together silicon microparticles as they expand and contract while charging and discharging. Credit: Adapted from Jang Wook Choi and colleagues
Scientists have reported a molecular pulley binder for high-capacity silicon anodes of lithium ion batteries. Silicon anodes are receiving a great deal of attention from the battery community. They have 3~5-times higher capacities compared with those using current graphite anodes in lithium ion batteries. A higher capacity means longer battery use per charge, which is particularly critical in extending the driving mileage of all-electric vehicles...
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