In situ reductionAr heat treatmentOxygen vacancyLi-O-2 batteriesThe thermally induced oxygen vacancies present across the intra/inter-crystalline sites and surface of ultrafine CoMn 2 O 4 (CMO) electrodes ameliorate electrochemical performance of Li-O 2 batteries (LOBs). Oxygen deficient CMOs are ...
We also chose the operating temperature as another input to allow the prediction of the equilibrium concentration of oxygen vacancies within the oxide lattice at different temperatures. Fig. 1: Machine learning (ML) assisted prediction of the oxygen vacancy concentration of perovskite oxides. a ...
Microstrain screening towards defect-less layered transition metal oxide cathodes Wenhua Zuo Jihyeon Gim Khalil Amine Nature Nanotechnology(2024) Trapped O2 and the origin of voltage fade in layered Li-rich cathodes John-Joseph Marie Robert A. House ...
Finally, the current challenges and outlooks of Vo engineering are highlighted for future development of high‐performance layered oxide cathode materials. 展开 关键词: oxygen vacancy Li/Na-ion batteries cathodes layered transition-metal oxides structural modulation ...
Gas-solid interfacial modification of oxygen activity in layered oxide cathodes for lithium-ion batteries Nat. Commun., 7 (2016), Article 12108 Google Scholar [25] Z.K. Tang, Y.F. Xue, G. Teobaldi, L.M. Liu The oxygen vacancy in Li-ion battery cathode materials Nanoscale Horiz., 5 (...
The thermal and chemical expansion properties of Ba0.5Sr05Co0.8Fe0.2O3-delta, a potential candidate for oxygen permeable membranes and cathodes in solid oxide fuel cells, were measured in the temperature range of 600 degrees C to 900 degrees C and the oxygen partial pressure (pO(2)) range of...
Oxygen excess LaMnO3+δ samples with 0.11 ≤δ≤ 0.31 have been prepared by thermal decomposition of metal citrates followed by annealings either in air or under high oxygen pressure (up to 200 bar). Samples with 0.13 ≤δ≤ 0.31 are single-phased rhombohedral perovskites, the distortion of ...
[25].O 1s orbital BE spectra of the Ru/TiO2/CNTs sample[Figure 3D] identified two peaks at 530.8, and 532.5 eV, indicating the O 1s binding energy of lattice oxygen (O1) and oxygen vacancy (O2), respectively[14,31]. The peaks at 459.0 eV and 465.08 eV in the fine spectrum of Ti...
Manganese could be the element of choice for cathode materials used in large-scale energy storage systems owing to its abundance and low toxicity levels. However, both lithium- and sodium-ion batteries adopting this electrode chemistry suffer from rapid performance fading, suggesting a major technical...
Trapped O2 and the origin of voltage fade in layered Li-rich cathodes John-Joseph Marie Robert A. House Peter G. Bruce Nature Materials(2024) Revealing the degradation pathways of layered Li-rich oxide cathodes Zhimeng Liu Yuqiang Zeng