Browsing Kjemisk institutt by Author "Mæhlen, Jan Petter"

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  • Crystallinity of silicon nanoparticles: Direct influence on the electrochemical performance of lithium ion battery anodes 
    Ulvestad, Asbjørn; Reksten, Anita; Andersen, Hanne Flåten; Almeida Carvalho, Patricia; Jensen, Ingvild Julie Thue; Nagell, Marius Uv; Mæhlen, Jan Petter; Kirkengen, Martin; Koposov, Alexey (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    The use of silicon (Si) in the form of nanoparticles is one of the most promising routes for boosting the capacity of modern Li‐ion batteries. Many parameters influence the performance of Si making the comparison of materials ...
  • Cycling performance of silicon-carbon composite anodes enhanced through phosphate surface treatment 
    Gobena, Hana; Lai, Samson Yuxiu; Koposov, Alexey; Mæhlen, Jan Petter; Ghamouss, Fouad; Lemordant, Daniel (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    Abstract Silicon (Si)‐based anodes have long been viewed as the next promising solution to improve the performance of modern lithium‐ion batteries. However, the poor cycling stability of Si‐based anodes impedes their ...
  • Morphology engineering of silicon nanoparticles for better performance in Li-ion battery anodes 
    Lai, Samson Yuxiu; Mæhlen, Jan Petter; Preston, Thomas; Skare, Marte Orderud; Nagell, Marius Uv; Ulvestad, Asbjørn; Lemordant, Daniel; Koposov, Alexey (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)
    Amorphous silicon nanoparticles were synthesized through pyrolysis of silane gas at temperatures ranging from 575 to 675 °C. According to the used temperature and silane concentration, two distinct types of particles can ...
  • Revealing Silicon’s Delithiation Behaviour through Empirical Analysis of Galvanostatic Charge–Discharge Curves 
    Huld, Frederik Thorbjørn; Mæhlen, Jan Petter; Keller, Caroline; Lai, Samson Yuxiu; Eleri, Obinna E.; Koposov, Alexey; Yu, Zhixin; Lou, FengLiu (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2023)
    The galvanostatic charge–discharge (GCD) behaviour of silicon (Si) is known to depend strongly on morphology, cycling conditions and electrochemical environment. One common method for analysing GCD curves is through ...
  • Stoichiometry-Controlled Reversible Lithiation Capacity in Nanostructured Silicon Nitrides Enabled by in Situ Conversion Reaction 
    Ulvestad, Asbjørn; Skare, Marte Orderud; Foss, Carl Erik Lie; Krogsæter, Henrik; Reichstein, Jakob; Preston, Thomas J.; Mæhlen, Jan Petter; Andersen, Hanne Flåten; Koposov, Alexey (Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2021)
    In modern Li-based batteries, alloying anode materials have the potential to drastically improve the volumetric and specific energy storage capacity. For the past decade silicon has been viewed as a “Holy Grail” among these ...