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Title: Three-dimensional porous SnO₂@NC framework for excellent energy conversion and storage
Authors: Wei, Dongwei
Xu, Feng
Xu, Jing
Fang, Jun
Koh, See Wee
Li, Kaibing
Sun, Zixu
Keywords: Engineering::Mechanical engineering
Issue Date: 2020
Source: Wei, D., Xu, F., Xu, J., Fang, J., Koh, S. W., Li, K. & Sun, Z. (2020). Three-dimensional porous SnO₂@NC framework for excellent energy conversion and storage. Ceramics International, 46(2), 1396-1402.
Journal: Ceramics International 
Abstract: SnO2-based materials are deemed to be attractive electrodes for lithium/sodium ion batteries (LIBs and SIBs) and electrocatalytic CO2 reduction reaction (CRR) because of high energy density and large abundance. However, the practical application of the SnO2-based materials is prevented by low electrical conductivity and large volume change. Herein, we construct a three-dimensional (3D) porous network with SnO2 nanoparticles into N-doped carbon (namely P–SnO2@NC) synthesized by freeze drying followed by a pyrolyzation process. In the composite, the 3D hierarchical framework can facilitate the ion penetration and gas diffusion. In addition, the NC network can optimize the conductivity of the material and suppress the electrode material to fall off from the electrode. Therefore, the electrode delivers excellent electrochemical properties with high capacities of 510 mA h g−1 after 1000 cycles for LIBs and 497 mA h g−1 after 500 cycles for SIBs. Furthermore, the electrode shows high selectivity for CRR with a large coulombic efficiency (CE) of 52.7% for HCOOH at 0.6 V.
ISSN: 0272-8842
DOI: 10.1016/j.ceramint.2019.09.103
Schools: School of Mechanical and Aerospace Engineering 
Rights: © 2019 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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