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Self-adaptive strain-relaxation optimization for high-energy lithium storage material through crumpling of graphene

Author

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  • Yunlong Zhao

    (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, WUT-Harvard Joint Nano Key Laboratory, Wuhan University of Technology)

  • Jiangang Feng

    (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, WUT-Harvard Joint Nano Key Laboratory, Wuhan University of Technology)

  • Xue Liu

    (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, WUT-Harvard Joint Nano Key Laboratory, Wuhan University of Technology)

  • Fengchao Wang

    (CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei)

  • Lifen Wang

    (Beijing National Laboratory for Condensed Matter, Institute of Physics, Chinese Academy of Sciences)

  • Changwei Shi

    (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, WUT-Harvard Joint Nano Key Laboratory, Wuhan University of Technology)

  • Lei Huang

    (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, WUT-Harvard Joint Nano Key Laboratory, Wuhan University of Technology)

  • Xi Feng

    (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, WUT-Harvard Joint Nano Key Laboratory, Wuhan University of Technology)

  • Xiyuan Chen

    (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, WUT-Harvard Joint Nano Key Laboratory, Wuhan University of Technology)

  • Lin Xu

    (Harvard University)

  • Mengyu Yan

    (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, WUT-Harvard Joint Nano Key Laboratory, Wuhan University of Technology)

  • Qingjie Zhang

    (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, WUT-Harvard Joint Nano Key Laboratory, Wuhan University of Technology)

  • Xuedong Bai

    (Beijing National Laboratory for Condensed Matter, Institute of Physics, Chinese Academy of Sciences)

  • Hengan Wu

    (CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei)

  • Liqiang Mai

    (State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, WUT-Harvard Joint Nano Key Laboratory, Wuhan University of Technology)

Abstract

High-energy lithium battery materials based on conversion/alloying reactions have tremendous potential applications in new generation energy storage devices. However, these applications are limited by inherent large volume variations and sluggish kinetics. Here we report a self-adaptive strain-relaxed electrode through crumpling of graphene to serve as high-stretchy protective shells on metal framework, to overcome these limitations. The graphene sheets are self-assembled and deeply crumpled into pinecone-like structure through a contraction-strain-driven crumpling method. The as-prepared electrode exhibits high specific capacity (2,165 mAh g−1), fast charge-discharge rate (20 A g−1) with no capacity fading in 1,000 cycles. This kind of crumpled graphene has self-adaptive behaviour of spontaneous unfolding–folding synchronized with cyclic expansion–contraction volumetric variation of core materials, which can release strain and maintain good electric contact simultaneously. It is expected that such findings will facilitate the applications of crumpled graphene and the self-adaptive materials.

Suggested Citation

  • Yunlong Zhao & Jiangang Feng & Xue Liu & Fengchao Wang & Lifen Wang & Changwei Shi & Lei Huang & Xi Feng & Xiyuan Chen & Lin Xu & Mengyu Yan & Qingjie Zhang & Xuedong Bai & Hengan Wu & Liqiang Mai, 2014. "Self-adaptive strain-relaxation optimization for high-energy lithium storage material through crumpling of graphene," Nature Communications, Nature, vol. 5(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5565
    DOI: 10.1038/ncomms5565
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    Cited by:

    1. Li, Yong & Yang, Jie & Song, Jian, 2015. "Electromagnetic effects model and design of energy systems for lithium batteries with gradient structure in sustainable energy electric vehicles," Renewable and Sustainable Energy Reviews, Elsevier, vol. 52(C), pages 842-851.
    2. Li, Yong & Yang, Jie & Song, Jian, 2015. "Microscale characterization of coupled degradation mechanism of graded materials in lithium batteries of electric vehicles," Renewable and Sustainable Energy Reviews, Elsevier, vol. 50(C), pages 1445-1461.
    3. Li, Yong & Yang, Jie & Song, Jian, 2016. "Structural model, size effect and nano-energy system design for more sustainable energy of solid state automotive battery," Renewable and Sustainable Energy Reviews, Elsevier, vol. 65(C), pages 685-697.
    4. Li, Yong & Yang, Jie & Song, Jian, 2016. "Nano-energy system coupling model and failure characterization of lithium ion battery electrode in electric energy vehicles," Renewable and Sustainable Energy Reviews, Elsevier, vol. 54(C), pages 1250-1261.

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