skip to main content
Idioma:

Quantifying microstructural dynamics and electrochemical activity of graphite and silicon-graphite lithium ion battery anodes

Pietsch, Patrick ; Westhoff, Daniel ; Feinauer, Julian ; Eller, Jens ; Marone, Federica ; Stampanoni, Marco ; Schmidt, Volker ; Wood, Vanessa

Nature communications, 2016-09, Vol.7 (1), p.12909-12909, Article 12909 [Periódico revisado por pares]

England: Nature Publishing Group

Texto completo disponível

Citações Citado por
  • Título:
    Quantifying microstructural dynamics and electrochemical activity of graphite and silicon-graphite lithium ion battery anodes
  • Autor: Pietsch, Patrick ; Westhoff, Daniel ; Feinauer, Julian ; Eller, Jens ; Marone, Federica ; Stampanoni, Marco ; Schmidt, Volker ; Wood, Vanessa
  • Assuntos: Electrical engineering ; Electrodes ; Graphite ; Information technology ; Lithium ; Morphology ; Oxidation ; Tomography ; X-rays
  • É parte de: Nature communications, 2016-09, Vol.7 (1), p.12909-12909, Article 12909
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: Despite numerous studies presenting advances in tomographic imaging and analysis of lithium ion batteries, graphite-based anodes have received little attention. Weak X-ray attenuation of graphite and, as a result, poor contrast between graphite and the other carbon-based components in an electrode pore space renders data analysis challenging. Here we demonstrate operando tomography of weakly attenuating electrodes during electrochemical (de)lithiation. We use propagation-based phase contrast tomography to facilitate the differentiation between weakly attenuating materials and apply digital volume correlation to capture the dynamics of the electrodes during operation. After validating that we can quantify the local electrochemical activity and microstructural changes throughout graphite electrodes, we apply our technique to graphite-silicon composite electrodes. We show that microstructural changes that occur during (de)lithiation of a pure graphite electrode are of the same order of magnitude as spatial inhomogeneities within it, while strain in composite electrodes is locally pronounced and introduces significant microstructural changes.
  • Editor: England: Nature Publishing Group
  • Idioma: Inglês
Links
Voltar para lista de resultados
Ir para página anteriorAnterior Resultado  5 AvançarIr para próxima página

  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

Buscando em bases de dados remotas. Favor aguardar.