Advanced Materials

Synthesis of New-Phased VOOH Hollow “Dandelions” and Their Application in Lithium-Ion Batteries

Authors

  • C. Z. Wu,

    1. Nanomaterials and Nanochemistry, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, P.R. China
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  • Y. Xie,

    1. Nanomaterials and Nanochemistry, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, P.R. China
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  • L. Y. Lei,

    1. Nanomaterials and Nanochemistry, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, P.R. China
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  • S. Q. Hu,

    1. Nanomaterials and Nanochemistry, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, P.R. China
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  • C. Z. OuYang

    1. Nanomaterials and Nanochemistry, Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, P.R. China
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  • This work was supported by the National Natural Science Foundation of China, and the authors thank Mr. Tanwei Li and Mr. Lingfeng Fei for their technical assistance with TEM and HRTEM, respectively. Supporting Information is available online from Wiley InterScience or from the authors.

Abstract

Organization of flakes into hollow, curved architectures (see figure) by means of an “aggregation-then-growth” process is described, providing in addition a fine example of a V3+ nanostructure. The new-phased VOOH hollow “dandelions” are shown to increase very effectively the capacity of lithium-ion intercalation/deintercalation in batteries, especially at low temperatures.

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