Tin Anode for High-Energy-Density Na-Ion Batteries
Year: 2025
Type: article
Abstract: Tin (Sn) is a promising anode material for sodium-ion batteries (SIBs) due to its high theoretical specific capacity (847 mAh g −1 ) and volumetric capacity (6238 mAh cm −3 ). In addition, Sn is a commodity and can be readily sourced. However, alloy anodes tend to suffer from a low initial Coulombic efficiency (ICE) and severe capacity loss due to extensive volume expansion (∼420% for Sn) during electrochemical cycling. In this work, commodity-sourced Sn is used (with an electrode active material composition of >99% Sn) to demonstrate how these traditional challenges can be overcome without major modifications. When paired with a NaCrO 2 (NCrO) cathode in a full cell, a high specific energy of 178 Wh kg −1 and volumetric energy density of 417 Wh L −1 can be achieved. This work highlights the opportunities for alloy materials such as Sn to enable high energy density SIBs.
Authors: Sihyun Kim, Wei Tang, Dong Ju Lee, Junlin Wu, Yuju Jeon, Bingyu Lu, So-Yeon Ham, Viet Le, Layheack Ly, Maria L. Owens, Erik A. Wu, Darren H. S. Tan, Zheng Chen
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $1,950
OpenAlex ID: W4414867464