Home > Articles > Published articles > Co-Sn Nanocrystalline Solid Solutions as Anode Materials in Lithium-Ion Batteries with High Pseudocapacitive Contribution |
Date: | 2019 |
Abstract: | Co-Sn solid-solution nanoparticles with Sn crystal structure and tuned metal ratios were synthesized by a facile one pot solution-based procedure involving the initial reduction of a Sn precursor followed by incorporation of Co within the Sn lattice. These nanoparticles were used as anode materials for Li-ion batteries. Among the different compositions tested, Co Sn and Co Sn electrodes provided the highest capacities with values above 1500 mAh g at a current density of 0. 2 A g after 220 cycles, and up to 800 mAh g at 1. 0 A g after 400 cycles. Up to 81 % pseudocapacitance contribution was measured for these electrodes at a sweep rate of 1. 0 mV s , thereby indicating fast kinetics and long durability. The excellent performance of Co-Sn nanoparticle alloy-based electrodes was attributed to both the small size of the crystal domains and their suitable composition, which buffered volume changes of Sn and contributed to a suitable electrode restructuration. |
Grants: | Ministerio de Economía y Competitividad SEV-2013-0295 Ministerio de Economía y Competitividad ENE2016-77798-C4-3-R Agència de Gestió d'Ajuts Universitaris i de Recerca 2017/SGR-327 Ministerio de Economía y Competitividad ENE2015-63969-R Ministerio de Economía y Competitividad ENE2017-85087-C3 |
Rights: | Tots els drets reservats. |
Language: | Anglès |
Document: | Article ; recerca ; Versió acceptada per publicar |
Published in: | ChemSusChem, Vol. 12, Issue 7 (April 2019) , p. 1451-1458, ISSN 1864-564X |
Postprint 8 p, 1.1 MB |