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A Battery-Capacitor Hybridfor Hybrids

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Lead-acid batteries are relics that haven¿t changed much since their invention nearly 150 years ago. Heavy and unable to withstand rapid charge-discharge cycles, they are unsuitable for the automotive world¿s killer app, hybrid-electric vehicles. Hybrids instead use expensive nickel-metal hydride (NiMH) batteries or, experimentally, lithium batteries. But a new, souped-up version of lead-acid batteries could change that, cutting the cost of hybrids and also improving the function of power grids and a range of other applications.

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IEEE Spectrum  (Volume:45 ,  Issue: 12 )