Direct Probing of Lattice-Strain-Induced Oxygen Release in LiCoO2 and Li2 MnO3 without Electrochemical Cycling.
Sign Up to like & getrecommendations! Published in 2023 at "Advanced materials"
DOI: 10.1002/adma.202212098
Abstract: Since the recognition of a significant oxygen-redox contribution to enhancing the capacity of Li transition-metal oxide cathodes, the oxygen release and subsequent structural variations together with capacity fading have been critical issues to achieve better… read more here.
Keywords: strain; oxygen release; lattice strain; oxygen ... See more keywords
Oxygen Release Degradation in Li‐Ion Battery Cathode Materials: Mechanisms and Mitigating Approaches
Sign Up to like & getrecommendations! Published in 2019 at "Advanced Energy Materials"
DOI: 10.1002/aenm.201900551
Abstract: Widespread application of Li‐ion batteries (LIBs) in large‐scale transportation and grid storage systems requires highly stable and safe performance of the batteries in prolonged and diverse service conditions. Oxygen release from oxygen‐containing positive electrode materials… read more here.
Keywords: ion; cathode materials; oxygen release;
Surface reinforcement doping to suppress oxygen release of Li-rich layered oxides
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Power Sources"
DOI: 10.1016/j.jpowsour.2021.230048
Abstract: Abstract Li-rich layered oxides can deliver ultrahigh capacities which stem from a blend of cationic redox and mostly lattice oxygen redox. However, the oxygen redox reaction often leads to structure transition and oxygen release from… read more here.
Keywords: surface; spectroscopy; oxygen release; oxygen ... See more keywords
Suppressed Lattice Oxygen Release via Ni/Mn Doping from Spent LiNi0.5Mn0.3Co0.2O2 toward High-Energy Layered-Oxide Cathodes.
Sign Up to like & getrecommendations! Published in 2022 at "Nano letters"
DOI: 10.1021/acs.nanolett.2c03090
Abstract: LiCoO2 has suffered from poor stability under high voltage as a result of insufficient Co-O bonding that causes lattice oxygen release and lattice distortions. Herein, we fabricated a high-voltage LiCoO2 at 4.6 V by doping… read more here.
Keywords: spent lini0; lini0 5mn0; oxygen release; oxygen ... See more keywords
Atomic-Scale Observations of Oxygen Release Degradation in Sulfide-Based All-Solid-State Batteries with Layered Oxide Cathodes.
Sign Up to like & getrecommendations! Published in 2022 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.2c06950
Abstract: All-solid-state batteries exhibit considerable potential for applications in electric vehicles. Understanding and controlling the oxygen release from the layered cathode active material are essential in achieving long-term operation of all-solid-state batteries because the oxygen release… read more here.
Keywords: atomic scale; oxygen release; solid state; state batteries ... See more keywords
Revisiting the Na2/3Ni1/3Mn2/3O2 Cathode: Oxygen Redox Chemistry and Oxygen Release Suppression
Sign Up to like & getrecommendations! Published in 2020 at "ACS Central Science"
DOI: 10.1021/acscentsci.9b01166
Abstract: Sodium layered transition metal oxides have been considered as promising cathode materials for sodium ion batteries due to their large capacity and high operating voltage. However, mechanism investigations of chemical evolution and capacity failure at… read more here.
Keywords: oxygen; capacity; cathode; chemistry ... See more keywords
High Voltage Cycling Induced Thermal Vulnerability in LiCoO2 Cathode: Cation Loss and Oxygen Release Driven by Oxygen Vacancy Migration.
Sign Up to like & getrecommendations! Published in 2020 at "ACS nano"
DOI: 10.1021/acsnano.0c02237
Abstract: The release of the lattice oxygen due to the thermal degradation of layered lithium transition metal oxides is one of the major safety concerns in Li-ion batteries. The oxygen release is generally attributed to the… read more here.
Keywords: high voltage; oxygen; cation; migration ... See more keywords
Artificial Nonenzymatic Antioxidant MXene Nanosheet-Anchored Injectable Hydrogel as a Mild Photothermal-Controlled Oxygen Release Platform for Diabetic Wound Healing.
Sign Up to like & getrecommendations! Published in 2022 at "ACS nano"
DOI: 10.1021/acsnano.1c10575
Abstract: Hypoxia, excessive reactive oxygen species (ROS), impaired angiogenesis, lasting inflammation, and bacterial infection, are key problems impeding diabetic wound healing. Particularly, controllable oxygen release and ROS scavenging capacities are critical during the wound healing process.… read more here.
Keywords: wound healing; hydrogel; oxygen release; diabetic wound ... See more keywords
Fast Surface Oxygen Release Kinetics Accelerate Nanoparticle Exsolution in Perovskite Oxides.
Sign Up to like & getrecommendations! Published in 2023 at "Journal of the American Chemical Society"
DOI: 10.1021/jacs.2c10256
Abstract: Exsolution is a recent advancement for fabricating oxide-supported metal nanoparticle catalysts via phase precipitation out of a host oxide. A fundamental understanding and control of the exsolution kinetics are needed to engineer exsolved nanoparticles to… read more here.
Keywords: surface oxygen; oxygen release; exsolution;
"Off-on" switching of intracellular singlet oxygen release under biocompatible conditions.
Sign Up to like & getrecommendations! Published in 2019 at "Chemical communications"
DOI: 10.1039/c9cc06231a
Abstract: Precise spatiotemporal control of singlet oxygen generation is of immense importance considering its involvement in photodynamic therapy. In this work, we present a rational design for an endoperoxide which is highly stable at ambient temperatures… read more here.
Keywords: singlet oxygen; oxygen release; singlet; switching intracellular ... See more keywords
The Role of Oxygen Release from Li- and Mn-Rich Layered Oxides during the First Cycles Investigated by On-Line Electrochemical Mass Spectrometry
Sign Up to like & getrecommendations! Published in 2017 at "Journal of The Electrochemical Society"
DOI: 10.1149/2.1001702jes
Abstract: In the present work, the extent and the role of oxygen release during the first charge of lithiumand manganese-rich Li1.17[Ni0.22Co0.12Mn0.66]0.83O2 (also referred to as HE-NCM) was investigated with on-line electrochemical mass spectrometry (OEMS). HE-NCM shows… read more here.
Keywords: line electrochemical; oxygen; investigated line; first charge ... See more keywords