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Nano Research

Article Title

Hydrothermal synthesis of nano-silicon from a silica sol and its use in lithium ion batteries

Keywords

silicon, hydrothermal synthesis, nanomaterials, silicon sol, energy storage

Abstract

There have been few reports concerning the hydrothermal synthesis of silicon anode materials. In this manuscript, starting from the very cheap silica sol, we hydrothermally prepared porous silicon nanospheres in an autoclave at 180 ° C. As anode materials for lithium-ion batteries (LIBs), the as-prepared nano-silicon anode without any carbon coating delivers a high reversible specific capacity of 2,650 mAh·g–1 at 0.36 A·g–1 and a significant cycling stability of about 950 mAh·g–1 at 3.6 A·g–1 during 500 cycles.

Graphical Abstract

Publisher

Tsinghua University Press

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