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polyaniline . Synth Met 1997,84(1–3):789–790.CrossRef Competing interests The authors declare that they have no competing interests. Authors’ contributions MC was in charge of the thermoelectric characterization, RT developed the synthesis of materials, CMG was in charge of X-ray analysis, and AC realized the discussion of the thermoelectric results. All authors read and approved the final next manuscript.”
“Background Silicon as anode material for Li ion batteries has a theoretical capacity of 4,200 mAh/g, more than ten times the capacity of standard graphite anodes. Microstructured Si in wire-shape overcomes problems caused by its four-fold volume expansion during its lithiation, allowing capacity stability over hundreds of cycles [1, 2]. Arrays of Si wires have been intensively studied in the latest years as alternative anodes for Li ion batteries. Those arrays have been prepared by three major techniques: (1) Vapor-liquid-solid (VLS) technique, using mostly ‘Au droplets’ as catalytic growth sites [1, 3, 4].   (2) Metal-assisted chemical etching of single-crystalline silicon [5, 6].

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