Experimental Study of the Influence of the Porosity of Thin-Film Silicon-Based Anodes on Their Charge-Discharge Characteristics

Кулова, Т. Л.; Mazaletskii, L. A.; Мироненко, А. А.; Rudyi, A. S.; Скундин, А. М.; Tortseva, Yu. S.; Fedorov, I. S.

doi:10.1134/s1063739720060074

Cited by 2 publications

(2 citation statements)

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“…The assumption that the SiO 2 domains do not reach the size of a nanoparticle, but most likely form an MC, is confirmed by the results of [30]. In this work, Si@O@Al films subjected to etching in a HF : NH 4 F : H 2 O solution were studied.…”

Section: Structure and Electrical Properties Of The Si@o@al Nanocompo...supporting

confidence: 55%

Effect of Si-Based Anode Lithiation on Charging Characteristics of All-Solid-State Lithium-Ion Battery

Rudy

Мироненко

et al. 2022

Batteries

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The description of the design, manufacturing technology, and test results of thin-film solid-state lithium-ion batteries with a nanocomposite negative electrode Si@O@Al is given herein. This electrochemical system features the hike on the charging curve plateau, which is interpreted as the change from I–V of the Ti-Si@O@Al contact. The latter is due to the change in the type of silicon conductivity during lithiation, as a result of which the ohmic metal-semiconductor contact proves to be biased in the reverse direction, and the charging current is maintained by minority charge carriers. It is shown that the current-conducting component Si@O@Al is formed by a solid solution a-Si(Al), which has a p-type conductivity. The change in the type of conductivity occurs as a result of silicon compensation through lithiation. It was found that Si@O@Al is nonlinear conductor, which can be considered as a percolation cluster formed by amorphous silicon nanoparticles and molecular clusters of silicon dioxide. The height of the Schottky barrier of the Ti|a-Si(Al) contact and the electron affinity of the a-Si(Al) solid solution were estimated.

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Section: Structure and Electrical Properties Of The Si@o@al Nanocompo...supporting

confidence: 55%

Effect of Si-Based Anode Lithiation on Charging Characteristics of All-Solid-State Lithium-Ion Battery

Rudy

Мироненко

et al. 2022

Batteries

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“…3, b). This is evidenced by the data from [9]. According to the results reported there, the morphology of a Si@O@Al film remains unchanged after etching in a fluoric acid solution, but its ion conductivity increases significantly.…”

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confidence: 59%

Features of the current-voltage characteristic of the Ti-Si@O@Al junction Ti-Si@O@Al

Rudy

Churilov

et al. 2022

Technical Physics Letters

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The results on measuring the I--V characteristics of the metal-semiconductor transition within the Ti (200 nm)|Si@O@Al (180 nm)|Ti (203 nm) test structure are presented. The basis of the Si@O@Al nanocomposite is a solid solution of Al in amorphous silicon a-Si(Al). The I--V of the test structure has a form characteristic of a reverse-biased ohmic contact between a metal and a p-type semiconductor, which implies that a-Si(Al) is a substitutional solid solution. It is shown that the I--V fits well the framework of the metal-semiconductor transition model and the varistor effect of the nanocomposite. Within the framework of the percolation model, it is shown that the I--V give values of the Si@O@Al resistivity, which are overestimated with respect to the resistance of the a-Si(Al) solid solution. Keywords: nanocomposite, amorphous silicon, solid solution, Schottky barrier, nonlinear conductor, dangling bonds.

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Experimental Study of the Influence of the Porosity of Thin-Film Silicon-Based Anodes on Their Charge-Discharge Characteristics

Cited by 2 publications

References 5 publications

Effect of Si-Based Anode Lithiation on Charging Characteristics of All-Solid-State Lithium-Ion Battery

Effect of Si-Based Anode Lithiation on Charging Characteristics of All-Solid-State Lithium-Ion Battery

Features of the current-voltage characteristic of the Ti-Si@O@Al junction Ti-Si@O@Al

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