Florian Schipper
Bar-Ilan University
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Publication
Featured researches published by Florian Schipper.
Journal of Materials Chemistry | 2016
Florian Schipper; Mudit Dixit; Daniela Kovacheva; Michael Talianker; Ortal Haik; Judith Grinblat; Evan M. Erickson; Chandan Ghanty; Dan Thomas Major; Boris Markovsky; Doron Aurbach
Ni-rich layered lithiated transition metal oxides Li[NixCoyMnz]O2 (x + y + z = 1) are the most promising materials for positive electrodes for advanced Li-ion batteries. However, one of the drawbacks of these materials is their low intrinsic stability during prolonged cycling. In this work, we present lattice doping as a strategy to improve the structural stability and voltage fade on prolonged cycling of LiNi0.6Co0.2Mn0.2O2 (NCM-622) doped with zirconium (+4). It was found that LiNi0.56Zr0.04Co0.2Mn0.2O2 is stable upon galvanostatic cycling, in contrast to the undoped material, which undergoes partial structural layered-to-spinel transformation during cycling. The current study provides sub-nanoscale insight into the role of Zr4+ doping on such a transformation in Ni-rich Li[NixCoyMnz]O2 materials by adopting a combined experimental and first-principles theory approach. A possible mechanism for a Ni-mediated layered-to-spinel transformation in Ni-rich NCMs is also proposed.
Russian Journal of Electrochemistry | 2016
Florian Schipper; Doron Aurbach
The review summarizes the development of lithium ion batteries beginning with the research of the 1970–1980s which lead to modern intercalation type batteries. Following the history of lithium ion batteries, material developments are outlined with a look at cathode materials, electrolyte solutions and anode materials. Finally, with lithium sulfur and lithium oxygen batteries two post intercalation type lithium batteries are discussed. The focus of the material discussions lies on basic understanding, problems and opportunities related to the materials.
RSC Advances | 2017
Evan M. Erickson; Florian Schipper; Ruiyuan Tian; Ji-Yong Shin; Christoph Erk; Frederick Francois Chesneau; Jordan Lampert; Boris Markovsky; Doron Aurbach
High capacity and high energy cathodes prepared from Li-rich 0.35Li2MnO3·0.65Li[Mn0.45Ni0.35Co0.20]O2 materials must be activated in Li-ion cells prior to normal cycling, in order to achieve their high discharge capacity of >250 mA h g−1. Activation is performed by charging the electrodes to potentials of 4.7–4.8 V vs. Li/Li+. This communication reports on the discovery that electrochemical activation of these cathode materials at low temperatures (0–15 °C) increases their discharge capacity, lowers average charge voltage, and diminishes voltage hysteresis. Work with the above mentioned material is reported as a representative example.
Journal of The Electrochemical Society | 2017
Florian Schipper; Evan M. Erickson; Christoph Erk; Ji-Yong Shin; Frederick Francois Chesneau; Doron Aurbach
Journal of The Electrochemical Society | 2017
Evan M. Erickson; Florian Schipper; Tirupathi Rao Penki; Ji-Yong Shin; Christoph Erk; F. Chesneau; Boris Markovsky; Doron Aurbach
Advanced Energy Materials | 2018
Florian Schipper; Hana Bouzaglo; Mudit Dixit; Evan M. Erickson; Tina Weigel; Michael Talianker; Judith Grinblat; L. Burstein; Michael Schmidt; Jordan Lampert; Christoph Erk; Boris Markovsky; Dan Thomas Major; Doron Aurbach
Advanced Energy Materials | 2018
Prasant Kumar Nayak; Evan M. Erickson; Florian Schipper; Tirupathi Rao Penki; N. Munichandraiah; Philipp Adelhelm; Hadar Sclar; Francis Amalraj; Boris Markovsky; Doron Aurbach
Journal of Physical Chemistry C | 2017
Mudit Dixit; Boris Markovsky; Florian Schipper; Doron Aurbach; Dan Thomas Major
Journal of The Electrochemical Society | 2016
Evan M. Erickson; Hana Bouzaglo; Hadar Sclar; Kang-Joon Park; Byung-Beom Lim; Florian Schipper; Chandan Ghanty; Judith Grinblat; Boris Markovsky; Yang-Kook Sun; Doron Aurbach
Inorganics | 2017
Florian Schipper; Prasant Kumar Nayak; Evan M. Erickson; S. Amalraj; Onit Srur-Lavi; Tirupathi Rao Penki; Michael Talianker; Judith Grinblat; Hadar Sclar; Ortal Breuer; C. Julien; N. Munichandraiah; Daniela Kovacheva; Mudit Dixit; Dan Thomas Major; Boris Markovsky; Doron Aurbach