Hermann Kaiser
Paul Scherrer Institute
8 Papers
66 Citations
Hermann Kaiser is an academic researcher from Paul Scherrer Institute. The author has contributed to research in topics: Electrode & Intercalation (chemistry). The author has an hindex of 8, co-authored 8 publications.
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Papers
In situ X-ray diffraction of the intercalation of (C2H5)4N+ and BF4− into graphite from acetonitrile and propylene carbonate based supercapacitor electrolytes
Patrick Ruch,M. Hahn,Fabio Rosciano,M. Holzapfel,Hermann Kaiser,Werner Scheifele,B. Schmitt,Petr Novák,Rüdiger Kötz,Alexander Wokaun +9 more
TL;DR: In this article, the intercalation of (C 2 H 5 ) 4 N + and BF 4 − from acetonitrile (AN) and propylene carbonate (PC) solutions into bound graphite electrodes during cyclic voltammetry was investigated by in situ X-ray diffraction (XRD) using synchrotron radiation.
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Circular in situ neutron powder diffraction cell for study of reaction mechanism in electrode materials for Li-ion batteries
Vikram Anil Godbole,Michael Heß,Claire Villevieille,Hermann Kaiser,Jean-François Colin,Petr Novák +5 more
TL;DR: In this article, a circular in situ neutron diffraction cell capable of cycling small amounts of electrode materials (0.2 and 0.3 g) was developed for primary use at the D20 beamline at ILL, Grenoble, France.
A multi-sample automatic system for in situ electrochemical X-ray diffraction synchrotron measurements.
Fabio Rosciano,Michael Holzapfel,Hermann Kaiser,Werner Scheifele,Patrick Ruch,M. Hahn,Rüdiger Kötz,Petr Novák +7 more
TL;DR: The set-up is presented on two typical examples from the field of lithium-ion batteries, structural changes in a layered LiCoO(2) positive electrode upon battery charging and the effect of co-intercalation of ionic liquids into the graphite negative electrode.
Important Aspects for Reliable Electrochemical Impedance Spectroscopy Measurements of Li-Ion Battery Electrodes
TL;DR: In this article, two cell designs for cycling battery electrodes with intermittent impedance measurement are presented and compared, and the reliability of the impedance response measured in these cells is confirmed in a symmetric electrode setup.
Colorimetric determination of lithium-ion mobility in graphite composite electrodes
TL;DR: In this article, a new method for the determination of apparent diffusion coefficients of lithium ions in graphite electrodes was developed, and an apparent activation energy of ca. 17 kJ/mol was measured for the diffusion of lithium in a porous graphite electrode.