Hydrothermal synthesis and electrochemical performance of nanoparticle Li2FeSiO4/C cathode materials for lithium ion batteries

Yimeng Xu; Wei Shen; Cong Wang; Aili Zhang; Qunjie Xu; Haimei Liu; Yonggang Wang; Yongyao Xia

doi:10.1016/j.electacta.2015.03.170

Hydrothermal synthesis and electrochemical performance of nanoparticle Li₂FeSiO₄/C cathode materials for lithium ion batteries

Yimeng Xu, Wei Shen, Cong Wang, Aili Zhang, Qunjie Xu, Haimei Liu, Yonggang Wang, Yongyao Xia

Research output: Contribution to journal › Article › Research › peer-review

7 Citations (Scopus)

Abstract

Li₂FeSiO₄ nanoparticles are successfully synthesized via hydrothermal approach, with the hydrothermal process monitored in detail. Structural characterizations by XRD, FTIR, SEM and HRTEM measurements reveal that the Li₂FeSiO₄ nanoparticles have a high crystalline degree and monodisperse nanoparticle shape with a size around of 50-200 nm. To further improve the electronic conductivity, the Li₂FeSiO₄ nanoparticles are coated by a carbon layer using in suit polymerization of dopamine. Moreover, the effect of carbon content for electrochemical performance of Li₂FeSiO₄/C is systemically investigated, and as a result, the composite with a ratio of Li₂FeSiO₄ and dopamine of 3:1 demonstrate the best electrochemical performance with a discharge specific capacity of 148 mA h g^-1 at a rate of 0.1 C at room temperature. Furthermore, the electrochemical performance of Li₂FeSiO₄/C at high temperature of 55 °C is also investigated, and it also exhibits a good performance with a discharge specific capacity of 240 mA h g^-1at a current rate of 0.2 C.

Original language	English
Pages (from-to)	340-347
Number of pages	8
Journal	Electrochimica Acta
Volume	167
DOIs	https://doi.org/10.1016/j.electacta.2015.03.170
Publication status	Published - 10 Jun 2015
Externally published	Yes

Keywords

Cathode
Hydrothermal
Lithium ion batteries
Lithium iron silicate
Nanoparticles

Cite this

Xu, Y., Shen, W., Wang, C., Zhang, A., Xu, Q., Liu, H., ... Xia, Y. (2015). Hydrothermal synthesis and electrochemical performance of nanoparticle Li₂FeSiO₄/C cathode materials for lithium ion batteries. Electrochimica Acta, 167, 340-347. https://doi.org/10.1016/j.electacta.2015.03.170

Xu, Yimeng ; Shen, Wei ; Wang, Cong ; Zhang, Aili ; Xu, Qunjie ; Liu, Haimei ; Wang, Yonggang ; Xia, Yongyao. / Hydrothermal synthesis and electrochemical performance of nanoparticle Li₂FeSiO₄/C cathode materials for lithium ion batteries. In: Electrochimica Acta. 2015 ; Vol. 167. pp. 340-347.

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title = "Hydrothermal synthesis and electrochemical performance of nanoparticle Li2FeSiO4/C cathode materials for lithium ion batteries",

abstract = "Li2FeSiO4 nanoparticles are successfully synthesized via hydrothermal approach, with the hydrothermal process monitored in detail. Structural characterizations by XRD, FTIR, SEM and HRTEM measurements reveal that the Li2FeSiO4 nanoparticles have a high crystalline degree and monodisperse nanoparticle shape with a size around of 50-200 nm. To further improve the electronic conductivity, the Li2FeSiO4 nanoparticles are coated by a carbon layer using in suit polymerization of dopamine. Moreover, the effect of carbon content for electrochemical performance of Li2FeSiO4/C is systemically investigated, and as a result, the composite with a ratio of Li2FeSiO4 and dopamine of 3:1 demonstrate the best electrochemical performance with a discharge specific capacity of 148 mA h g-1 at a rate of 0.1 C at room temperature. Furthermore, the electrochemical performance of Li2FeSiO4/C at high temperature of 55 °C is also investigated, and it also exhibits a good performance with a discharge specific capacity of 240 mA h g-1at a current rate of 0.2 C.",

keywords = "Cathode, Hydrothermal, Lithium ion batteries, Lithium iron silicate, Nanoparticles",

author = "Yimeng Xu and Wei Shen and Cong Wang and Aili Zhang and Qunjie Xu and Haimei Liu and Yonggang Wang and Yongyao Xia",

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Xu, Y, Shen, W, Wang, C, Zhang, A, Xu, Q, Liu, H, Wang, Y & Xia, Y 2015, 'Hydrothermal synthesis and electrochemical performance of nanoparticle Li₂FeSiO₄/C cathode materials for lithium ion batteries', Electrochimica Acta, vol. 167, pp. 340-347. https://doi.org/10.1016/j.electacta.2015.03.170

Hydrothermal synthesis and electrochemical performance of nanoparticle Li₂FeSiO₄/C cathode materials for lithium ion batteries. / Xu, Yimeng; Shen, Wei; Wang, Cong; Zhang, Aili; Xu, Qunjie; Liu, Haimei; Wang, Yonggang; Xia, Yongyao.

In: Electrochimica Acta, Vol. 167, 10.06.2015, p. 340-347.

Research output: Contribution to journal › Article › Research › peer-review

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AU - Wang, Cong

AU - Zhang, Aili

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AU - Liu, Haimei

AU - Wang, Yonggang

AU - Xia, Yongyao

PY - 2015/6/10

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