Identifying the chemical and structural irreversibility in LiNi0.8Co0.15Al0.05O2 – a model compound for classical layered intercalation

Autor: M. Stanley Whittingham, Karena W. Chapman, Haodong Liu, Ying Shirley Meng, Yonggao Xia, Sunny Hy, Yan Chen, Zhaoping Liu, Peter J. Chupas, Olaf J. Borkiewicz, Bao Qiu, Clare P. Grey, Minghao Zhang, Hao Liu, Saul H. Lapidus, Kamila M. Wiaderek, Natasha A. Chernova, Ieuan D. Seymour, Nicole M. Trease, Ke An

Publikováno v: Journal of Materials Chemistry A. 6:4189-4198

In this work, we extracted 95% of the electrochemically available Li from LiNi0.8Co0.15Al0.05O2 (NCA) by galvanostatically charging the NCA/MCMB full cell to 4.7 V. Joint powder X-ray and neutron diffraction (XRD & ND) studies were undertaken for NCA

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::86a41baa9039538c9b0c3134b4b5b413
https://doi.org/10.1039/c7ta10829j

Characterizing Oxygen Local Environments in Paramagnetic Battery Materials via 17O NMR and DFT Calculations

Autor: Nicole M. Trease, Ieuan D. Seymour, Derek S. Middlemiss, Clare P. Grey, David M. Halat, Andrew J. Pell

Publikováno v: Journal of the American Chemical Society. 138:9405-9408

Experimental techniques that probe the local environment around O in paramagnetic Li-ion cathode materials are essential in order to understand the complex phase transformations and O redox processes that can occur during electrochemical delithiation

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66aea00eeac92e8ac467b1757193fdc0
https://doi.org/10.1021/jacs.6b05747

Correlating Microstructural Lithium Metal Growth with Electrolyte Salt Depletion in Lithium Batteries Using 7Li MRI

Autor: Hee Jung Chang, Mohaddese Mohammadi, Clare P. Grey, Nicole M. Trease, Alexej Jerschow, Andrew J. Ilott

Publikováno v: Journal of the American Chemical Society. 137:15209-15216

Lithium dendrite growth in lithium ion and lithium rechargeable batteries is associated with severe safety concerns. To overcome these problems, a fundamental understanding of the growth mechanism of dendrites under working conditions is needed. In t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::af4f5d005155b4e9e2e5cf9ca3c3b5ef
https://doi.org/10.1021/jacs.5b09385

Direct observation of ion dynamics in supercapacitor electrodes using in situ diffusion NMR spectroscopy

Autor: John M. Griffin, Alexander C. Forse, Clare P. Grey, Abdul-Rahman O. Raji, Nicole M. Trease, Céline Merlet, Javier Carretero-González

Publikováno v: Nature Energy. 2

Ionic transport inside porous carbon electrodes underpins the storage of energy in supercapacitors and the rate at which they can charge and discharge, yet few studies have elucidated the materials properties that influence ion dynamics. Here we use

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24d6cdc5973c08b4579e13e461b372c9
https://doi.org/10.1038/nenergy.2016.216

Ion counting in supercapacitor electrodes using NMR spectroscopy

Autor: John M. Griffin, Alexander C. Forse, Hui Wang, Clare P. Grey, Pierre-Louis Taberna, Patrice Simon, Nicole M. Trease

Publikováno v: Faraday Discussions
Faraday Discussions, Royal Society of Chemistry, 2014, 176, pp.49-68. ⟨10.1039/C4FD00138A⟩
Faraday Discussions, Royal Society of Chemistry, 2014, 176, pp.49-68. ⟨10.1039/c4fd00138a⟩

19F NMR spectroscopy has been used to study the local environments of anions in supercapacitor electrodes and to quantify changes in the populations of adsorbed species during charging. In the absence of an applied potential, anionic species adsorbed

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2e37f15112d9471c221bee99712e95e
https://doi.org/10.1039/c4fd00138a