Enhanced electrochemical performance of hollow heterostructured carbon encapsulated znic metastanate microcube composite for lithium-ion and sodium-ion batteries

Jingyao Ma, Zelei Zhang, Almagul Mentbayeva, Guanghui Yuan, Beibei Wang, Hui Wang, Gang Wang

Research output: Contribution to journalArticle

Abstract

High-performance lithium and sodium ion batteries typically consist of heterogeneous composite electrode materials that integrate different components and are used for a variety of structural and electrochemical functions. Designing heterogeneous composite electrode materials to significantly enhance battery performance depends on the basic understanding of the mechanisms and synergistic effects of different components. In this work, we develop a simple design and preparation of heterostructured hollow ZnSnO 3 @carbon microcubes composite (denoted as H-ZnSnO 3 @C), consisting of a ZnSnO 3 microcube within hollow structure surrounded by the thin carbon coating shell. Meaningfully, the H-ZnSnO 3 @C electrode shows desirable cycle stability (100 cycles, 817 mAh g −1 at 0.1 A g −1 ) for lithium storage. Moreover, a charge capacity of 302 mAh g −1 is obtained for sodium storage. By systematic electrochemical analysis, we elucidate that the inner hollow space can effectively sustain the lithiation/sodiation-induced expansion of ZnSnO 3 without breaking the outer carbon coating shells and the conductive outer carbon shells allow for a fast electron conduction as well as limit most SEI formation to the carbon surface instead of on the ZnSnO 3 -electrolyte interface, thus enhancing the rate performance. More importantly, the electrochemical kinetics analysis and density functional theory calculations confirms the basic principles of enhanced electrochemical performance. This work indicates an effective method of engineering the metal oxide-carbon heterogeneous composite as advanced electrodes for energy storage devices.

Original languageEnglish
Pages (from-to)31-44
Number of pages14
JournalElectrochimica Acta
Volume312
DOIs
Publication statusPublished - Jul 20 2019

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Lithium
Carbon
Sodium
Ions
Composite materials
Electrodes
Coatings
Energy storage
Oxides
Electrolytes
Density functional theory
Metals
Kinetics
Electrons

Keywords

  • Heterostructure
  • Hollow
  • Lithium storage
  • Sodium storage
  • Znic metastanate

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Electrochemistry

Cite this

Enhanced electrochemical performance of hollow heterostructured carbon encapsulated znic metastanate microcube composite for lithium-ion and sodium-ion batteries. / Ma, Jingyao; Zhang, Zelei; Mentbayeva, Almagul; Yuan, Guanghui; Wang, Beibei; Wang, Hui; Wang, Gang.

In: Electrochimica Acta, Vol. 312, 20.07.2019, p. 31-44.

Research output: Contribution to journalArticle

Ma, Jingyao ; Zhang, Zelei ; Mentbayeva, Almagul ; Yuan, Guanghui ; Wang, Beibei ; Wang, Hui ; Wang, Gang. / Enhanced electrochemical performance of hollow heterostructured carbon encapsulated znic metastanate microcube composite for lithium-ion and sodium-ion batteries. In: Electrochimica Acta. 2019 ; Vol. 312. pp. 31-44.
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