Sn Nanoparticles Anchored on Carbon Foam Prepared by a Facile Electrodeposition for Lithium Storage

Abstract

As an anode material of lithium‐ion batteries (LIB), Sn has great application potential due to its high theoretical specific capacity. However, the Li–Sn alloying reaction causes serious volume expansion and destroys the electrode structure, resulting in a rapid capacity decay. Herein, a simple preparation method for the Sn–carbon composites (Sn/CF) is designed by electrodepositing Sn nanoparticles on 3D carbon foam (CF) derived from the carbonization of melamine. Sn/CF‐3h exhibits excellent electrochemical properties. At 1 A g−1, the specific capacity of Sn/CF‐3h remains 166.6 mAh g−1 with a high capacity retention of 85.4% even over 2000 cycles. The designed structure of the Sn/CF electrode contributes to its excellent performance: providing a 3D conductive network, accommodating volume changes to prevent Sn nanoparticles from losing electrical contact, and promoting contact with electrolyte to accelerate lithium ion transmission.

Electrospun advanced nanomaterials for in situ transmission electron microscopy: Progress and perspectives

“…Tin (Sn) metal is one of the most promising anode materials for alkali-metal-ion batteries due to its high theoretical capacity. 96,97 However, the pulverization of active materials and repeated SEI growth due to the severe volume expansion of Sn upon charge/discharge process result in a short battery lifespan. To explore the lithiation/delithiation process of Sn within a carbon matrix, Wang et al prepared Sn NP/CNF hybrid materials by electrospinning and subsequent heat treatment as an anode material for LIBs.…”

“…Tin (Sn) metal is one of the most promising anode materials for alkali‐metal‐ion batteries due to its high theoretical capacity 96,97 . However, the pulverization of active materials and repeated SEI growth due to the severe volume expansion of Sn upon charge/discharge process result in a short battery lifespan.…”