Mesoporous silicon sponge as an anti-pulverization structure for high-performance lithium-ion battery anodes

Xiaolin Li, Meng Gu, Shenyang Hu, Rhiannon Kennard, Pengfei Yan, Xilin Chen, Chongmin Wang, Michael J. Sailor, Ji-Guang Zhang () and Jun Liu ()
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Xiaolin Li: Energy and Environment Directorate, Pacific Northwest National Laboratory
Meng Gu: Environmental and Molecular Sciences Laboratory, Pacific Northwest National Laboratory
Shenyang Hu: Energy and Environment Directorate, Pacific Northwest National Laboratory
Rhiannon Kennard: University of California, San Diego
Pengfei Yan: Environmental and Molecular Sciences Laboratory, Pacific Northwest National Laboratory
Xilin Chen: Energy and Environment Directorate, Pacific Northwest National Laboratory
Chongmin Wang: Environmental and Molecular Sciences Laboratory, Pacific Northwest National Laboratory
Michael J. Sailor: University of California, San Diego
Ji-Guang Zhang: Energy and Environment Directorate, Pacific Northwest National Laboratory
Jun Liu: Energy and Environment Directorate, Pacific Northwest National Laboratory

Nature Communications, 2014, vol. 5, issue 1, 1-7

Abstract: Abstract Nanostructured silicon is a promising anode material for high-performance lithium-ion batteries, yet scalable synthesis of such materials, and retaining good cycling stability in high loading electrode remain significant challenges. Here we combine in-situ transmission electron microscopy and continuum media mechanical calculations to demonstrate that large (>20 μm) mesoporous silicon sponge prepared by the anodization method can limit the particle volume expansion at full lithiation to ~30% and prevent pulverization in bulk silicon particles. The mesoporous silicon sponge can deliver a capacity of up to ~750 mAh g−1 based on the total electrode weight with >80% capacity retention over 1,000 cycles. The first cycle irreversible capacity loss of pre-lithiated electrode is

Date: 2014
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DOI: 10.1038/ncomms5105

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