Understanding of Oxygen Redox in the Oxygen Evolution Reaction
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DOI: 10.1002/adma.202107956
Abstract: The electron‐transfer process during the oxygen evolution reaction (OER) often either proceeds solely via a metal redox chemistry (adsorbate evolution mechanism (AEM), with metal bands around the Fermi level) or an oxygen redox chemistry (lattice… read more here.
Keywords: oxygen redox; chemistry; oxygen; lom ... See more keywords
A Mechanistic Insight into the Oxygen Redox of Li-Rich Layered Cathodes and their Related Electronic/Atomic Behaviors Upon Cycling.
Sign Up to like & getrecommendations! Published in 2023 at "Advanced materials"
DOI: 10.1002/adma.202211965
Abstract: Li-rich cathodes have been extensively investigated as their energy density is superior to Li stoichiometric cathode materials. In addition to the transition metal redox, this intriguing electrochemical performance originates from the redox reaction of the… read more here.
Keywords: oxygen redox; redox; rich cathodes; redox rich ... See more keywords
Native Vacancy Enhanced Oxygen Redox Reversibility and Structural Robustness
Sign Up to like & getrecommendations! Published in 2018 at "Advanced Energy Materials"
DOI: 10.1002/aenm.201803087
Abstract: Energy storage systems (ESS) that are cost-effective and capable of running stably for years or decades are key to the large-scale application of the intermittent renewable energy resources. For most of the transition metal (TM)… read more here.
Keywords: reversibility; oxygen; energy; redox reaction ... See more keywords
Quantifying the Anomalous Local and Nanostructure Evolutions Induced by Lattice Oxygen Redox in Lithium‐Rich Cathodes
Sign Up to like & getrecommendations! Published in 2022 at "Small Methods"
DOI: 10.1002/smtd.202200740
Abstract: Due to their accessible lattice oxygen redox (l‐OR) at high voltages, Li‐rich layered transition metal (TM) oxides have shown promising potential as candidate cathodes for high‐energy‐density Li‐ion batteries. However, this l‐OR process is also associated… read more here.
Keywords: oxygen redox; nanostructure evolutions; local nanostructure; rich cathodes ... See more keywords
Metal-organic framework based nanomaterials for electrocatalytic oxygen redox reaction
Sign Up to like & getrecommendations! Published in 2019 at "Science China Chemistry"
DOI: 10.1007/s11426-018-9441-4
Abstract: Due to the severe environmental issues, many advanced technologies, typically fuel cells and metal-air batteries have aroused widespread concerns and been intensively studied in recent years. However, oxygen redox reactions including oxygen evolution reaction (OER)… read more here.
Keywords: oxygen; metal organic; reaction; oxygen redox ... See more keywords
Importance of metal−oxygen bond for stable oxygen-redox reaction in Li-excess layered oxides
Sign Up to like & getrecommendations! Published in 2021 at "Energy Storage Materials"
DOI: 10.1016/j.ensm.2021.08.024
Abstract: Abstract Although nearly all oxygen redox reaction (ORR) research has been carried out based on Mn4+-containing layered oxides (Li[Li1−x−yMnxMy]O2) in Li-ion positive electrodes, the roles of Mn(t2g3)−O hybridized band in correlation with ORRs have yet… read more here.
Keywords: layered oxides; redox reaction; oxygen; bond ... See more keywords
High Reversibility of Lattice Oxygen Redox Quantified by Direct Bulk Probes of Both Anionic and Cationic Redox Reactions
Sign Up to like & getrecommendations! Published in 2019 at "Joule"
DOI: 10.1016/j.joule.2018.11.014
Abstract: Summary The reversibility and cyclability of anionic redox in battery electrodes hold the key to its practical employments. Here, through mapping of resonant inelastic X-ray scattering (mRIXS), we have independently quantified the evolving redox states… read more here.
Keywords: reversibility; oxygen; lattice oxygen; redox ... See more keywords
Cycling mechanism of Li2MnO3: Li–CO2 batteries and commonality on oxygen redox in cathode materials
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DOI: 10.1016/j.joule.2021.02.004
Abstract: Summary Li2MnO3 has been considered to be a representative Li-rich compound with active debates on oxygen activities. Here, by evaluating the Mn and O states in the bulk and on the surface of Li2MnO3, we… read more here.
Keywords: mechanism li2mno3; redox; cycling mechanism; oxygen redox ... See more keywords
P2–Na2/3Mg1/4Mn7/12Co1/6O2 cathode material based on oxygen redox activity with improved first-cycle voltage hysteresis
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Power Sources"
DOI: 10.1016/j.jpowsour.2021.230104
Abstract: Abstract The recent report of P2–Na2/3Mg0.28Mn0.72O2 (P2-NMM) demonstrated the possibility of utilizing the oxygen redox couple in a layered oxide cathode without the need for alkali ions or vacancies in the transition metal layer. In… read more here.
Keywords: na2 3mg1; first cycle; 4mn7 12co1; 12co1 6o2 ... See more keywords
Anionic Oxygen Redox in the High-Lithium Material Li8SnO6
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DOI: 10.1021/acs.chemmater.0c03259
Abstract: Lithiated transition metal oxide cathode materials that combine oxygen-anion redox [O2–/(O2)n−] with cation redox offer substantial capacities and higher voltage than cathodes without oxygen redox,... read more here.
Keywords: redox; redox high; anionic oxygen; oxygen redox ... See more keywords
Tuning the Reversibility of Oxygen Redox in Lithium-Rich Layered Oxides
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DOI: 10.1021/acs.chemmater.6b04743
Abstract: Recently, more and more new high-capacity lithium-rich layered oxides involving both metal and oxygen redox have been proposed. However, the structural stability was influenced by the irreversible oxygen redox, which leads to the instability of… read more here.
Keywords: oxygen; lithium rich; layered oxides; rich layered ... See more keywords