A Robust and Conductive Black Tin Oxide Nanostructure Makes Efficient Lithium-Ion Batteries Possible

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Wujie Dong
  • Chao Wang
  • Yue Lu
  • Xiangye Liu
  • Xin Wang
  • Xiaotao Yuan
  • Zhe Wang
  • Tianquan Lin
  • Manling Sui
  • I-Wei Chen
  • Fuqiang Huang

Detail(s)

Original languageEnglish
Article number1700136
Journal / PublicationAdvanced Materials
Volume29
Issue number24
Publication statusPublished - 27 Jun 2017
Externally publishedYes

Abstract

SnO<sub>2</sub>-based lithium-ion batteries have low cost and high energy density, but their capacity fades rapidly during lithiation/delithiation due to phase aggregation and cracking. These problems can be mitigated by using highly conducting black SnO<sub>2−</sub> <sub>x</sub>, which homogenizes the redox reactions and stabilizes fine, fracture-resistant Sn precipitates in the Li<sub>2</sub>O matrix. Such fine Sn precipitates and their ample contact with Li<sub>2</sub>O proliferate the reversible Sn → Li <sub>x</sub>Sn → Sn → SnO<sub>2</sub>/SnO<sub>2−</sub> <sub>x</sub> cycle during charging/discharging. SnO<sub>2−</sub> <sub>x</sub> electrode has a reversible capacity of 1340 mAh g<sup>−1</sup> and retains 590 mAh g<sup>−1</sup> after 100 cycles. The addition of highly conductive, well-dispersed reduced graphene oxide further stabilizes and improves its performance, allowing 950 mAh g<sup>−1</sup> remaining after 100 cycles at 0.2 A g<sup>−1</sup> with 700 mAh g<sup>−1</sup> at 2.0 A g<sup>−1</sup>. Conductivity-directed microstructure development may offer a new approach to form advanced electrodes. © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Research Area(s)

  • conductive tin oxide, lithium-ion batteries (LIBs), molten-aluminum reduction method, reversible redox reaction

Bibliographic Note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to lbscholars@cityu.edu.hk.

Citation Format(s)

A Robust and Conductive Black Tin Oxide Nanostructure Makes Efficient Lithium-Ion Batteries Possible. / Dong, Wujie; Xu, Jijian; Wang, Chao et al.
In: Advanced Materials, Vol. 29, No. 24, 1700136, 27.06.2017.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review