December 7, 2009

Electrodes, dyes and catalysts

* Sprinkle one type of nanoparticle on thin films made from other nanoparticles and you can boost the electrical conductivity of battery, fuel cell and solar cell electrodes. See Dispersed nanoelectrode devices, Nature Nanotechnology, published online November 29, 2009.

* Come up with a dye that dramatically slows the recombination of electrons and holes and you can make efficient tandem dye sensitized solar cells. See Highly efficient photocathodes for dye-sensitized tandem solar cells, Nature Materials, published online November 29, 2009.

* Replace phosphate with fluorine and sulfate and you have a way to increase the energy storage capacity of lithium-ion batteries. See A 3.6V lithium-based fluorosulphate insertion positive electrode for lithium-ion batteries, Nature Materials, published online November 29, 2009.

* Load silicon nanoparticles into a tangle of carbon nanofibers and you have potentially low-cost electrodes for lithium-ion batteries. See Evaluation of Si/carbon composite nanofiber-based insertion anodes for new-generation rechargeable lithium-ion batteries, Energy & Environmental Science, published online November 27, 2009.

* Mix iron and carbon monoxide and you have an inexpensive catalyst for extracting hydrogen from water using sunlight. See Light-Driven Hydrogen Generation: Efficient Iron-Based Water Reduction Catalysts, Angewandte Chemie International Edition, published online November 20, 2009.

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