Anion Reactivity in Cation‐Disordered Rocksalt Cathode Materials: The Influence of Fluorine Substitution
Sign Up to like & getrecommendations! Published in 2020 at "Advanced Energy Materials"
DOI: 10.1002/aenm.202001500
Abstract: The demand for high energy‐density, mass‐producible cathode materials has spurred the exploration of new material structures and compositions. Lithium‐excess, cation‐disordered rocksalt (DRX) materials are a new class of transition metal oxides that display high capacity… read more here.
Keywords: reactivity; cathode materials; disordered rocksalt; cation disordered ... See more keywords
Synthesis and electrochemical properties of cation‐disordered rock‐salt xLi3NbO4·(1 − x) NiO compounds for Li‐ion batteries
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Energy Research"
DOI: 10.1002/er.6050
Abstract: In this study, Li‐excess cation‐disordered rock‐salt cathode materials, xLi3NbO4·(1 − x) NiO (LNNO, 0.55 ≤ x ≤ 0.7), are synthesized to explore the effect of composition on the structure and electrochemical performance using a sol‐gel method for the first… read more here.
Keywords: cation disordered; disordered rock; rock; rock salt ... See more keywords
Role of Redox-Inactive Transition-Metals in the Behavior of Cation-Disordered Rocksalt Cathodes.
Sign Up to like & getrecommendations! Published in 2020 at "Small"
DOI: 10.1002/smll.202000656
Abstract: Owing to the capacity boost from oxygen redox activities, Li-rich cation-disordered rocksalts (LRCDRS) represent a new class of promising high-energy Li-ion battery cathode materials. Redox-inactive transition-metal (TM) cations, typically d0 TM, are essential in the… read more here.
Keywords: oxygen; cation disordered; redox; inactive transition ... See more keywords
Reversible Mn/Cr dual redox in cation-disordered Li-excess cathode materials for stable lithium ion batteries
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DOI: 10.1016/j.actamat.2021.116935
Abstract: Abstract Cation-disordered Li-excess oxides/oxyfluorides have opened the door for designing alternative, high energy cathodes. However, achieving long cycle life and high rate capability represents a major challenge for disordered rocksalt cathodes (DRX). Herein, we develop… read more here.
Keywords: redox; cycle life; dual redox; cation disordered ... See more keywords
Significant role of oxygen redox reaction with O2-release in Li-excess cation-disordered rock-salt cathodes Li2+2Mn1−Ti1−O4: First-principles calculations
Sign Up to like & getrecommendations! Published in 2020 at "Electrochimica Acta"
DOI: 10.1016/j.electacta.2019.135286
Abstract: Abstract Cation-disordered rock-salt oxides Li 2 + 2 x Mn 1 − x Ti 1 − x O 4 with Li-excess x are promising Li-ion battery cathodes employing the anion-redox strategy. To clarify cathode properties… read more here.
Keywords: cation; cation disordered; rock salt; principles calculations ... See more keywords
Tailoring the redox-active transition metal content to enhance cycling stability in cation-disordered rock-salt oxides
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DOI: 10.1016/j.ensm.2021.08.045
Abstract: Abstract Lithium-excess cation-disordered rock-salt oxides (DRXs) are investigated intensively as cathode materials for future lithium-ion batteries combining cationic and anionic redox reactions. However, the lattice oxygen redox can cause severe oxygen release resulting in rapid… read more here.
Keywords: salt oxides; rock salt; cation disordered; content ... See more keywords
Synthesis and electrochemical properties of cation-disordered Li-Ni-Ti-O compounds as cathode material for lithium ion batteries
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Alloys and Compounds"
DOI: 10.1016/j.jallcom.2017.08.261
Abstract: Abstract Li-excess disordered rock-salt cathode material, Li 1+z/3 Ni 1/2-z/2 Ti 1/2+z/6 O 2 (Z = 0, 0.1, 0.2, 0.3, 0.4, 0.5) compounds have been synthesized via a facile sol-gel method. The X-ray diffraction (XRD) indicates that… read more here.
Keywords: electrochemical properties; cation disordered; synthesis electrochemical; cathode material ... See more keywords
Structural Stabilization of Cation-Disordered Rock-Salt Cathode Materials: Coupling between a High-Ratio Inactive Ti4+ Cation and a Mn2+/Mn4+ Two-Electron Redox Pair.
Sign Up to like & getrecommendations! Published in 2022 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.2c10652
Abstract: Cation-disordered rock-salt cathode materials are featured by their extraordinarily high specific capacities in lithium-ion batteries primarily contributed by anion redox reactions. Unfortunately, anion redox reactions can trigger oxygen release in this class of materials, leading… read more here.
Keywords: rock salt; cation; cation disordered; disordered rock ... See more keywords
Tuning Bulk Redox and Altering Interfacial Reactivity in Highly Fluorinated Cation-Disordered Rocksalt Cathodes.
Sign Up to like & getrecommendations! Published in 2023 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.2c16974
Abstract: Lithium-excess, cation-disordered rocksalt (DRX) materials have been subject to intense scrutiny and development in recent years as potential cathode materials for Li-ion batteries. Despite their compositional flexibility and high initial capacity, they suffer from poorly… read more here.
Keywords: cation disordered; spectroscopy; disordered rocksalt; degradation ... See more keywords
Regulating the Anion Redox and Suppressing the Structural Distortion of Cation-Disordered Rock-Salt Cathode Materials to Improve Cycling Durability through Chlorine Substitution.
Sign Up to like & getrecommendations! Published in 2023 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.3c01280
Abstract: Owing to the capacity boost from anion redox activities, cation-disordered rock-salt oxides are considered as potential candidates for the next-generation of high energy density Li-ion cathode materials. Unfortunately, the anion redox process that affords ultra-high… read more here.
Keywords: rock salt; cation disordered; disordered rock;
Combinatorial investigation of structural and optical properties of cation-disordered ZnGeN2
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DOI: 10.1039/d0tc01675f
Abstract: Cation-disordered ZnGeN2 shows promise for application as a blue-green emitter in light-emitting devices, but more foundational work is necessary to understand structure–property relationships. In this work, we present a combinatorial exploration of the experimental phase… read more here.
Keywords: combinatorial investigation; cation; cation disordered; optical properties ... See more keywords