Zn-doped Tin monoxide nanobelt induced engineering a graphene and CNT supported Zn-doped Tin dioxide composite for Lithium-ion storage

A simplified coprecipitation strategy is explored for the synthesis of Zn-doped tin oxide samples, and the Zn-doped tin monoxide nanobelts are further used to successfully engineer hierarchical reduced graphene oxide and carbon nanotube supported Zn-doped tin dioxide composite. [Display omitted] In...

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Veröffentlicht in:Journal of colloid and interface science 2022-02, Vol.608, p.768-779
Hauptverfasser: Bao, Shouchun, Zhang, Rui, Tu, Mengyao, Kong, Xiangli, Huang, Haowei, Wang, Can, Liu, Xuehua, Xu, Binghui
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Sprache:eng
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Zusammenfassung:A simplified coprecipitation strategy is explored for the synthesis of Zn-doped tin oxide samples, and the Zn-doped tin monoxide nanobelts are further used to successfully engineer hierarchical reduced graphene oxide and carbon nanotube supported Zn-doped tin dioxide composite. [Display omitted] In this work, a rapid coprecipitation reaction is developed to obtain nano-sized Zn-doped tin oxide samples (Zn-SnO-II or Zn-SnO2-IV) for the first time by simply mixing tin ion (Sn2+ or Sn4+) and zinc ion (Zn2+) containing salts in a mild aqueous condition. Characterization results illustrate the Zn-SnO-II sample is constituted by an overwhelming quantity of Zn-doped SnO nanobelts and a small quantity of Zn-doped SnO2 nanoparticles. The redox reaction between the Sn2+ ions from the Zn-SnO-II sample and the surface oxygen-containing functional groups from functionalized carbon nanotube (F-CNT) and graphene oxide (GO) leads to the formation of the final Zn-SnO2/CNT@RGO composites. As an anode active material for lithium-ion batteries, the Zn-SnO2/CNT@RGO product showed superior electrochemical performance than the controlled Zn-SnO2/CNT and Zn-SnO2/RGO samples, which had a high gravimetric capacity of 901.3 mAh·g−1 at a high charge and discharge current of 1000 mA·g−1 after 300 cycles and excellent rate capability. The reaction mechanism for the successful synthesis of the Zn-doped tin oxide samples has been proposed, and the insight into the outstanding lithium-ion storage performance for the Zn-SnO2/CNT@RGO composite has been revealed. The synthetic processes for both the Zn-doped tin oxides and derived carbon supported composites are straightforward and involve no harsh conditions nor complicated treatment, which have good potential for massive production and application in wider fields.
ISSN:0021-9797
1095-7103
DOI:10.1016/j.jcis.2021.09.199