Lithium ion accumulator

  • Efficient Recycling of Lithium-Ion Batteries – Launch of Research Project NEW-BAT

    A new method will allow to recover valuable battery materials. © K. Selsam-Geißler, Fraunhofer ISC

    Funding was granted by the Federal Ministry of Education and Research (BMBF) to develop an innovative recycling process for valuable battery materials to be reinserted into the battery supply chain. The goal of the NEW-BAT project is a robust, energy efficient and economically viable system with wide application potential. Lithium-ion batteries are key elements in electromobility and a successful energy turnaround. The widespread use of these energy storage devices will come along with large quantities of spent batteries which itself constitute a valuable source of raw materials.

  • Lithium-Ionen Akkus: Kapazität kann um das Sechsfache gesteigert werden

    Lithium Ionen Akkus Kapazität kann um das Sechsfache gesteigert werden | Lithium-Ionen wandern in die Schicht aus kristallinem Silizium ein. Im Lauf der Beladung bildet sich eine 20 Nanometer dünne Schicht (rot) in der Si-Elektrode, die extrem viele Lithium-Atome aufnimmt Abbildung: HZB

    Lithium-Ionen-Akkus könnten ihre Kapazität um das Sechsfache erhöhen, wenn ihre Anode statt aus Graphit aus Silizium bestünde. Ein Team vom Institut für weiche Materie und funktionale Materialien des Helmholtz-Zentrum Berlin (HZB) hat erstmals detailliert beobachtet, wie Lithium-Ionen in Silizium einwandern. Ihre Arbeit zeigt, dass schon extrem dünne Silizium-Schichten ausreichen, um die theoretisch mögliche Kapazität des Akkus zu realisieren. Die Arbeit ist veröffentlicht in der Zeitschrift ACSnano der American Chemical Socity (DOI: 10.1021/acsnano.6b02032)

  • The link between nanostructured electrode materials and Samsung’s debacle

    Schematic of lithium-air battery charge and discharge cycles.

    As recently has been announced, the South Korean multinational electronics company SΛMSUNG had to recall its flagship Galaxy Note 7 smartphone with the reason that battery problems cause the “explosion” of the phones during or after charging.
    In regard to the recent events, the German news site heise online published an interview with battery researcher Bai-Xiang Xu from the Technical University Darmstadt in which she explains the technical background of the Note 7 debacle.