Jump to main content
Jump to site search

Issue 41, 2018
Previous Article Next Article

Silicon monophosphide as a possible lithium battery anode material

Author affiliations

Abstract

Binary (semi)metal–phosphorus compounds fascinate nowadays as they promise high specific capacities in metal ion batteries and an advantageous in situ formation of the electrochemically active material inside the electrochemical cell without air exposure. Here, we report on SiP as a new member of this material family which was tested as an anode material in Li ion batteries due to a highly attractive theoretical specific capacity of about 3000 mAh g−1 SiP. After synthesis by a vapour-transport reaction a cotton wool-like product was obtained revealing a layered 2D crystalline microribbon-like morphology, space group Cmc21, which may allow fast Li ion intercalation/diffusion kinetics. SiP also opens up a novel perspective for application in ultra-thin optoelectronics or flexible photovoltaics. During the first discharging half-cycle the crystalline phase amorphizes as indicated by operando synchrotron powder diffraction followed by an amorphous state without re-formation of any crystalline phase, including Li3P. Our investigations after 50 discharging–charging cycles show a specific capacity of 550 mAh g−1, which supports the trend of lifetime reduction by LiP formation. Further optimisation is necessary to allow a broad application for novel technologies like high performance Li ion or Li–S batteries.

Graphical abstract: Silicon monophosphide as a possible lithium battery anode material

Back to tab navigation

Supplementary files

Publication details

The article was received on 19 Jul 2018, accepted on 18 Sep 2018 and first published on 12 Oct 2018


Article type: Communication
DOI: 10.1039/C8TA06983B
Citation: J. Mater. Chem. A, 2018,6, 19974-19978
  • Open access: Creative Commons BY license
  •   Request permissions

    Silicon monophosphide as a possible lithium battery anode material

    R. Reinhold, D. Mikhailova, T. Gemming, A. B. Missyul, C. Nowka, S. Kaskel and L. Giebeler, J. Mater. Chem. A, 2018, 6, 19974
    DOI: 10.1039/C8TA06983B

    This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

    Reproduced material should be attributed as follows:

    • For reproduction of material from NJC:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
    • For reproduction of material from PCCP:
      [Original citation] - Published by the PCCP Owner Societies.
    • For reproduction of material from PPS:
      [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
    • For reproduction of material from all other RSC journals:
      [Original citation] - Published by The Royal Society of Chemistry.

    Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.

Search articles by author

Spotlight

Advertisements