Výsledky vyhledávání - "Florian Sigel"

Methods-Spatially Resolved Diffraction Study of the Uniformity of a Li-Ion Pouch Cell

Autor: Daniel Risskov Sørensen, Michael Heere, Anna Smith, Christopher Schwab, Florian Sigel, Mads Ry Vogel Jørgensen, Volodymyr Baran, Alexander Schökel, Michael Knapp, Helmut Ehrenberg, Anatoliy Senyshyn

Publikováno v: Sørensen, D R, Heere, M, Smith, A, Schwab, C, Sigel, F, Jørgensen, M R V, Baran, V, Schökel, A, Knapp, M, Ehrenberg, H & Senyshyn, A 2022, ' Methods-Spatially Resolved Diffraction Study of the Uniformity of a Li-Ion Pouch Cell ', Journal of The Electrochemical Society, vol. 169, no. 3, 030518 . https://doi.org/10.1149/1945-7111/ac59f9
Journal of the Electrochemical Society 169(3), 030518 (2022). doi:10.1149/1945-7111/ac59f9

Journal of the Electrochemical Society 169(3), 030518 (2022). doi:10.1149/1945-7111/ac59f9
A lab-made, multilayered Li-ion battery pouch cell is investigated using in-operando neutron powder diffraction (NPD) and spatially resolved powder X-ray

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e96e7d56e69910170cb10b87f5fb5ef1
https://pure.au.dk/portal/da/publications/methodsspatially-resolved-diffraction-study-of-the-uniformity-of-a-liion-pouch-cell(df09b19a-0d38-4db6-9013-1f6025154a08).html

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Thermally Induced Structural Reordering in Li- and Mn-Rich Layered Oxide Li Ion Cathode Materials

Autor: Murat Yavuz, Karin Kleiner, Helmut Ehrenberg, Sylvio Indris, Florian Sigel, Christoph Dräger, Lars Esmezjan, Björn Schwarz

Publikováno v: Chemistry of Materials. 32:1210-1223

In recent years, a considerable amount of effort has been put into a better understanding of the correlation of structure and electrochemical properties in Li- and Mn-rich NCM layered oxide Li ion ...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d30794cd76e9a32afb0282bf1bdeeba5
https://doi.org/10.1021/acs.chemmater.9b04355

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Observation of electrochemically active Fe3+/Fe4+ in LiCo0.8Fe0.2MnO4 by in situ Mössbauer spectroscopy and X-ray absorption spectroscopy

Autor: Florian Sigel, Lukas Pfaffmann, Ralf Witte, Helmut Ehrenberg, Christoph Dräger, Valeriu Mereacre, Michael Knapp, Robert Kruk, Stefan Mangold, Sylvio Indris

Publikováno v: Physical Chemistry Chemical Physics. 21:89-95

LiCo0.8Fe0.2MnO4 has been investigated as an active material for the positive electrode in lithium-ion batteries (LIBs) with a discharge potential of around 5 V (vs. Li+|Li). After synthesis by a Pechini based sol-gel route, the structural and morpho

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https://doi.org/10.1039/c8cp06177g

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The effect of electrochemically inactive Ti substituted for Ru in Li2Ru1-Ti O3 on structure and electrochemical performance

Autor: Helmut Ehrenberg, Gang Chen, Ye Yao, Florian Sigel, Fei Du, Chunzhong Wang, Lu Zhang, Björn Schwarz

Publikováno v: Journal of Energy Chemistry, 60, 222–228

The approach of substituting electrochemically active with inactive elements has widely been used to improve the electrochemical performance of Li-rich intercalation cathode materials. This especially is true for Li-rich compounds where almost all of

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High-Resolution Surface Analysis on Aluminum Oxide-Coated Li1.2Mn0.55Ni0.15Co0.1O2 with Improved Capacity Retention

Autor: Sven Ole Steinmüller, Björn Schwarz, Florian Sigel, Nadine Dannehl, Helmut Ehrenberg, Mathias Pein, Ulrich Hasenkox, Sylvio Indris, Lars Esmezjan, Dorothée Vinga Szabó

Publikováno v: ACS Applied Materials & Interfaces. 10:43131-43143

Thin alumina coatings on Li-rich nickel cobalt manganese oxide (Li-rich NCM) particles used as cathode material in Li-ion batteries can improve the capacity retention during cycling. However, the underlying mechanisms are still not fully understood.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6843aa6d9447ac7a2ea709921ef0d77e
https://doi.org/10.1021/acsami.8b09550

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Delithiation/relithiation process of LiCoMnO4 spinel as 5 V electrode material

Autor: Lukas Pfaffmann, Florian Sigel, Helmut Ehrenberg, Sylvio Indris, Michael Knapp, Christoph Dräger, D. Mikhailova

Publikováno v: Journal of Power Sources. 371:55-64

In this work, the LiCoMnO 4 spinel has been synthesized by a two-step sol-gel based method, followed by sintering at temperatures up to 750 °C in oxygen. After structural characterization of the pristine material via synchrotron and neutron diffract

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::7d6db92f1c5898840fa7d2f175e386a9
https://doi.org/10.1016/j.jpowsour.2017.10.039

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Kinetic characteristics up to 4.8 V of layered LiNi1/3Co1/3Mn1/3O2 cathode materials for high voltage lithium-ion batteries

Autor: Zhenlian Chen, Qinggang Zhang, Helmut Ehrenberg, Jun Li, Bjoern Schwarz, Florian Sigel, Xianhui Zhang, Yantu Li, Ke An, Zhifeng Zhang

Publikováno v: Electrochimica Acta. 227:152-161

Understanding the structure properties in deep delithiated states and electrochemical kinetics in the high potential window of LiNi1/3Co1/3Mn1/3O2 (NCM) cathode materials is essential to advance their performance in rechargeable lithium-ion batteries

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8385d39ada7d650f6b8c7f31a4fbd378
https://doi.org/10.1016/j.electacta.2017.01.014

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$MnO_{2}$ and Reduced Graphene Oxide as Bifunctional Electrocatalysts for $Li��O_{2}$ Batteries

Autor: Helmut Ehrenberg, Florian Sigel, Qiang Fu, Melinte Georgian, Frieder Scheiba, Vanessa Trouillet, Weibo Hua, Lihua Zhu, Angelina Sarapulpva

Publikováno v: ACS applied energy materials 2(10), 7121-7131 (2019). doi:10.1021/acsaem.9b01047

ACS applied energy materials 2(10), 7121 - 7131 (2019). doi:10.1021/acsaem.9b01047
An effective and cheap way to optimize the oxygen electrocatalyst of the cathode for Li��O$_2$ battery is to control the growth of a low amount of nanosize

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Observation of electrochemically active Fe

Autor: Christoph, Dräger, Florian, Sigel, Ralf, Witte, Robert, Kruk, Lukas, Pfaffmann, Stefan, Mangold, Valeriu, Mereacre, Michael, Knapp, Helmut, Ehrenberg, Sylvio, Indris

Publikováno v: Physical chemistry chemical physics : PCCP. 21(1)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::b9b94054f572c89da75b2bcb43188aba
https://pubmed.ncbi.nlm.nih.gov/30519683

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Fatigue in 0.5Li2MnO3:0.5Li(Ni1/3Co1/3Mn1/3)O2 positive electrodes for lithium ion batteries

Autor: Bjoern Schwarz, Helmut Ehrenberg, Lars Riekehr, Jinlong Liu, Florian Sigel, Ingo Kerkamm, Yongyao Xia

Publikováno v: Journal of Power Sources. 325:391-403

Two different Li-rich nickel–cobalt–manganese-oxide (Li-rich NCM) active materials with the same nominal composition 0.5Li2MnO3:0.5Li(Ni1/3Co1/3Mn1/3)O2 but different pristine nano structure have been analyzed structurally and electrochemically i

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https://doi.org/10.1016/j.jpowsour.2016.06.014

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