1 - 10 of 23 articles
Sodium‐ion batteries are an attractive alternative to replace Lithium‐ion batteries and Ni–metal hydride batteries for electric vehicle and smart grid applications. Kyu Tae Lee, Linda F. Nazar, and co‐workers demonstrate on page 770, for the first time, the synthesis of new polyanion‐based...
Solid oxide fuel cells (SOFCs) are recognized as a viable technology to convert chemical energy directly into electricity, with higher efficiencies than conventional thermal engines. On page 762, Spyridon Zafeiratos and co‐workers describe the fundamental characteristics of an operating nickel...
Cyclized‐polyacrylonitrile (cyclized‐PAN) is used as a conformal coating on nano‐Si for highly reversible anodes. Cyclization of PAN proceeds by limiting the pyrolysis to 300 °C such that the cyclized‐PAN maintains its polymeric properties while also providing sp2 π bonding for good electronic...
A dye‐sensitized solar cell (DSSC) composed of dual‐functional upconverter‐doped TiO2 hollow shells for enhanced performance is developed by Lianzhou Wang and co‐workers on page 704. The performance improvement is due to the dual‐functional layer, which is not only efficient for light scattering...
Upconverter‐doped TiO2 hollow shells prepared by a simple one‐pot hydrothermal method can be used as a dual‐functional top‐layer in the photoanodes of dye‐sensitized solar cells, not only improving the light scattering, but also enhancing near‐infrared light harvesting of the DSSC cells.
A new type of nitrogen‐enriched carbon materials is synthesized from nitrile‐rich alkali salts. High nitrogen content is obtained for these alkali salts precursors after annealing at 850 °C. These nitrogen‐enriched carbons exhibit high coulombic efficiency, high reversible capacity and good...
A novel thin‐film direct hydrogen peroxide/borohydride micro fuel cell with a high operating voltage of 1.6 V is fabricated by a facile method.
Inverted bulk heterojunction solar cells are fabricated using a conjugated polyelectrolyte (PFN) as a cathode interlayer. Enhanced photovoltaic performance is achieved by adjusting the PFN thickness. Measurements of the optical transmittance, cathode work function (via UPS) and surface atomic...
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