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A free-standing, totally flexible and light-weight manganese dioxide/carbon fiber cloth electrode has been simply and cost-effectively fabricated by direct reduction of permanganate. The nano-scaled MnO 2 film, being in physical contact with the carbon fiber substrate, provides an enhancement of the kinetics and mechanical flexibility. The electrochemical stability is improved due to the efficient...
Hf 4+ -doped Zn 2 SiO 4 phosphor emitting long-lasting cyan light was prepared by the conventional high temperature solid-state technique. The emission spectrum of the Hf 4+ -doped phosphor exhibits one broad band peaking at 471 nm in the visible region excited by 254 nm. The cyan-light afterglow can last about 40 min in darkness after being irradiated with 254 nm UV...
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