Publication: Influence of doping and controlled sn charge state on the properties and performance of SnO nanoparticles as anodes in li-ion batteries
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Publication Date
2020-08-27
Authors
Vázquez López, Antonio
Maestre Varea, David
Ramírez Castellanos, Julio
González Calbet, José María
Cremades Rodríguez, Ana Isabel
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American Chemical Society
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Abstract
Li-ion batteries (LiB) play nowadays a major role in several technological fields. In addition to enhanced high capacity and long cyclability, some other issues regarding safety, materials sustainability, and low cost remain unsolved. Tin oxide (SnO_2) presents several of those advantages as an anode material; however, some aspects still require to be investigated such as capacity fading over cycles. Herein, tin oxide nanoparticle-based anodes have been tested, showing high capacities and a significant cyclability over more than 150 cycles. A complementary strategy introducing doping elements such as Li and Ni during the synthesis by hydrolysis has been also evaluated versus the use of undoped materials, in order to assess the dependence on SnO_2 quality and properties of battery performance. Diverse aspects such as the Sn charge state in the synthesized nanoparticles, the variable incorporation of dopants, and the structure of defects have been considered in the understanding of the obtained capacity.
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©2020 American Chemical Society
We acknowledge Elettra Sincrotrone Trieste for providing access to its synchrotron radiation facilities. This work was supported by MINECO/FEDER/M-ERA.Net Cofund projects: RTI2018-097195-B-I00 and PCIN-2017-106. I.P. and S.N. gratefully acknowledge financial support from EUROFEL.