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Tin nanoparticles as an effective conductive additive in silicon anodes.

ABSTRACT: We have found that the addition of tin nanoparticles to a silicon-based anode provides dramatic improvements in performance in terms of both charge capacity and cycling stability. Using a simple procedure and off-the-shelf additives and precursors, we developed a structure in which the tin nanoparticles are segregated at the interface between the silicon-containing active layer and the solid electrolyte interface. Even a minor addition of tin, as small as ?2% by weight, results in a significant decrease in the anode resistance, as confirmed by electrochemical impedance spectroscopy. This leads to a decrease in charge transfer resistance, which prevents the formation of electrically inactive "dead spots" in the anode structure and enables the effective participation of silicon in the lithiation reaction.

SUBMITTER: Zhong L

PROVIDER: S-EPMC4971508 | biostudies-literature | 2016 Aug

REPOSITORIES: biostudies-literature

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Tin nanoparticles as an effective conductive additive in silicon anodes.

Zhong L L Beaudette C C Guo J J Bozhilov K K Mangolini L L

Scientific reports 20160803

We have found that the addition of tin nanoparticles to a silicon-based anode provides dramatic improvements in performance in terms of both charge capacity and cycling stability. Using a simple procedure and off-the-shelf additives and precursors, we developed a structure in which the tin nanoparticles are segregated at the interface between the silicon-containing active layer and the solid electrolyte interface. Even a minor addition of tin, as small as ∼2% by weight, results in a significant ...[more]

PMID: 27484849

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