Processing of Macroporous Silicon

Astrova, E. V.

doi:10.1007/978-3-319-05744-6_73

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2015

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“…These structures are characterized by high values of capacity per unit nominal electrode area [12,13]. Usually, post-anodization treatment (shaping) is used to create this architecture by changing the size and shape of the pores [14,15]. Anisotropic shaping of macropores makes it possible to obtain a variety of 3D configurations with monodisperse walls faceted by a single type of crystallographic plane [16].…”

Section: Introductionmentioning

confidence: 99%

Application of silicon zig-zag wall arrays for anodes of Li-ion batteries

Li¹,

Rumyantsev²,

Левицкий³

et al. 2015

Semicond. Sci. Technol.

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Cyclic tests of anodes based on zigzag wall arrays fabricated by the electrochemical etching and post-anodization treatment of silicon have been performed. Compared with anodes based on nanowires and planar thin films, these structures have several advantages. An ex situ analysis of the morphology and structural transformations in a material subjected to cyclic lithiation was conducted by electron microscopy and micro-Raman spectroscopy. The effect of geometrical parameters and a cycling mode on the degradation rate was studied. It is shown that a significant rise in the cycle life of the anode can be obtained by the restriction of the inserted amount of lithium. The anode, subjected to galvanostatic cycling at a rate С/2.8 at a limited charge capacity of 1000 mA • h g −1 , demonstrates no degradation after 1200 cycles.

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