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Nickel cobaltite (NiCo2O4) aerogels, synthesized with a chloride-based epoxide-driven sol–gel process, exhibit ultrahigh specific capacitances (1400 F g−1; see figure), excellent reversibility, and outstanding cycle stability, at a relatively high mass loading of 0.4 mg cm−2.
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Wei et al. (2009) studied this question.
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