J
Juan G. Lozano
Researcher at University of Oxford
Publications - 68
Citations - 2259
Juan G. Lozano is an academic researcher from University of Oxford. The author has contributed to research in topics: Dislocation & Scanning transmission electron microscopy. The author has an hindex of 21, co-authored 67 publications receiving 1517 citations. Previous affiliations of Juan G. Lozano include Dublin City University & University of Seville.
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Journal ArticleDOI
Oxygen redox chemistry without excess alkali-metal ions in Na2/3[Mg0.28Mn0.72]O2
Urmimala Maitra,Robert A. House,James W. Somerville,Nuria Tapia-Ruiz,Juan G. Lozano,Niccoló Guerrini,Rong Hao,Kun Luo,Liyu Jin,Miguel A. Pérez-Osorio,Felix Massel,David M. Pickup,Silvia Ramos,Xingye Lu,Daniel McNally,Alan V. Chadwick,Feliciano Giustino,Thorsten Schmitt,Laurent Duda,Matthew R. Roberts,Peter G. Bruce +20 more
TL;DR: Na2/3[Mg0.28Mn0.72]O2 exhibits an excess capacity and it is shown that this is caused by oxygen redox, even though Mg2+ resides in the TM layers rather than alkali-metal (AM) ions, which demonstrates that excess AM ions are not required to activate oxygenRedox.
Journal ArticleDOI
Superstructure control of first-cycle voltage hysteresis in oxygen-redox cathodes
Robert A. House,Urmimala Maitra,Miguel A. Pérez-Osorio,Juan G. Lozano,Juan G. Lozano,Liyu Jin,James W. Somerville,Laurent Duda,Abhishek Nag,A. C. Walters,Ke-Jin Zhou,Matthew R. Roberts,Peter G. Bruce +12 more
TL;DR: In oxygen-redox intercalation cathodes, voltage hysteresis can be avoided by forming cathode materials with a ‘ribbon’ superstructure in the transition metal layers that suppresses transition metal migration.
Journal ArticleDOI
Degradation Mechanisms at the Li10GeP2S12/LiCoO2 Cathode Interface in an All-Solid-State Lithium-Ion Battery.
Wenbo Zhang,Felix H. Richter,Felix H. Richter,Sean P. Culver,Thomas Leichtweiss,Juan G. Lozano,Christian Dietrich,Peter G. Bruce,Wolfgang G. Zeier,Jürgen Janek +9 more
TL;DR: Postmortem analysis with scanning transmission electron microscopy, electron energy loss spectroscopy, and X-ray diffraction show that electrochemically driven mechanical failure and degradation at the cathode/solid electrolyte interface contribute to the increase in internal resistance and the resulting capacity fading.
Journal ArticleDOI
Nature of the “Z”-phase in layered Na-ion battery cathodes
James W. Somerville,Adam Sobkowiak,Nuria Tapia-Ruiz,Juliette Billaud,Juan G. Lozano,Robert A. House,Leighanne C. Gallington,Tore Ericsson,Lennart Häggström,Matthew R. Roberts,Urmimala Maitra,Peter G. Bruce +11 more
TL;DR: In this paper, the authors demonstrate that the Z phase is most accurately described as a continuously changing intergrowth structure which evolves from P2 to O2 through the OP4 structure as an intermediate.
Journal ArticleDOI
What Triggers Oxygen Loss in Oxygen Redox Cathode Materials
Robert A. House,Urmimala Maitra,Liyu Jin,Juan G. Lozano,James W. Somerville,Nicholas H. Rees,Andrew J. Naylor,Laurent Duda,Felix Massel,Alan V. Chadwick,Silvia Ramos,David M. Pickup,Daniel McNally,Xingye Lu,Thorsten Schmitt,Matthew R. Roberts,Peter G. Bruce +16 more
TL;DR: In this article, it is shown that it is possible to increase the charge capacity of transition metal (TM) oxide cathodes in alkali-ion batteries by invoking redox reactions on the oxygen.