| 1. |
- Baur, Christian, et al.
(författare)
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Improved cycling stability in high-capacity Li-rich vanadium containing disordered rock salt oxyfluoride cathodes
- 2019
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Ingår i: Journal of Materials Chemistry A. - : Royal Society of Chemistry. - 2050-7488 .- 2050-7496. ; 7:37, s. 21244-21253
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Tidskriftsartikel (refereegranskat)abstract
- Lithium-rich transition metal disordered rock salt (DRS) oxyfluorides have the potential to lessen one large bottleneck for lithium ion batteries by improving the cathode capacity. However, irreversible reactions at the electrode/electrolyte interface have so far led to fast capacity fading during electrochemical cycling. Here, we report the synthesis of two new Li-rich transition metal oxyfluorides Li2V0.5Ti0.5O2F and Li2V0.5Fe0.5O2F using the mechanochemical ball milling procedure. Both materials show substantially improved cycling stability compared to Li2VO2F. Rietveld refinements of synchrotron X-ray diffraction patterns reveal the DRS structure of the materials. Based on density functional theory (DFT) calculations, we demonstrate that substitution of V3+ with Ti3+ and Fe3+ favors disordering of the mixed metastable DRS oxyfluoride phase. Hard X-ray photoelectron spectroscopy shows that the substitution stabilizes the active material electrode particle surface and increases the reversibility of the V3+/V5+ redox couple. This work presents a strategy for stabilization of the DRS structure leading to improved electrochemical cyclability of the materials.
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| 2. |
- Johnsen, Annika, et al.
(författare)
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Literature review on the acceptance and road safety, ethical, legal, social and economic implications of automated vehicles
- 2017
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- This deliverable summarizes the findings of an extensive literature review on the acceptance, behavioural intentions, road safety, as well as ethical, legal, social (ELSI) and economic considerations in the scope of vehicle automation.The theoretical fundaments and relevant findings of recent public opinion research regarding user acceptance of automation are presented. Also the view of organised stakeholders is taken into account.Regarding road safety there is a potential for increased road safety but drivers tend to pick up non-related driving tasks instead. These problems are due to several traditional HMI concerns. In the future autonomous cars must make decisions that touch on ethical issues that have not yet been sufficiently and transparently discussed. Although in many countries legislation is now reacting to the new technology, many aspects – like liability and privacy / data protection – are not yet regulated by law. Automated vehicles promise to have several clear benefits that might change the entire transport system. The positive externalities that come from the technological advantages of automated vehicles might be outweighed by the negative externalities coming from the potential increases in travelling by private vehicles.
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| 3. |
- Johnsen, Rasmus, et al.
(författare)
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Management learning and the unsettled humanities : Introduction to the special issue
- 2021
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Ingår i: Management Learning. - : SAGE Publications. - 1350-5076 .- 1461-7307. ; 52:2, s. 135-143
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Tidskriftsartikel (refereegranskat)abstract
- This special issue engages with the unsettling of the humanities to further explore its relevance for management learning and education. It explores how themes traditionally belonging to the humanities have spurred critical inquiry and raised theoretical issues within other disciplines, following the crisis of the classical humanist ideal as ‘the measure of all things’. It focuses on how the tensions resulting from this crisis can be constructively thematized in the field of management and organization studies, and how the unsettling of the humanities’ privileged access to studying the ‘especially human’ can be taken into the classroom. In this manner, the special issue engages with questions related to the Anthropocene, posthumanism and transhumanism, and raises issues concerning the human possibilities for knowing, learning and living in entangled ways. Additionally, it helps us understand the critical role of the humanities in making sense of the reciprocities between imagination, information and the human crafting of meaningful knowledge.
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