Search Results - "House, Robert A."
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1
Superstructure control of first-cycle voltage hysteresis in oxygen-redox cathodes
Published in Nature (London) (23-01-2020)“…In conventional intercalation cathodes, alkali metal ions can move in and out of a layered material with the charge being compensated for by reversible…”
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2
Transition metal migration and O2 formation underpin voltage hysteresis in oxygen-redox disordered rocksalt cathodes
Published in Nature communications (07-09-2022)“…Lithium-rich disordered rocksalt cathodes display high capacities arising from redox chemistry on both transition-metal ions (TM-redox) and oxygen ions…”
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3
Redox Chemistry and the Role of Trapped Molecular O2 in Li-Rich Disordered Rocksalt Oxyfluoride Cathodes
Published in Journal of the American Chemical Society (30-12-2020)“…In the search for high energy density cathodes for next-generation lithium-ion batteries, the disordered rocksalt oxyfluorides are receiving significant…”
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4
The Role of Ni and Co in Suppressing O‐Loss in Li‐Rich Layered Cathodes
Published in Advanced functional materials (01-01-2021)“…Lithium‐rich transition metal cathodes can deliver higher capacities than stoichiometric materials by exploiting redox reactions on oxygen. However, oxidation…”
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5
Covalency does not suppress O2 formation in 4d and 5d Li-rich O-redox cathodes
Published in Nature communications (20-05-2021)“…Layered Li-rich transition metal oxides undergo O-redox, involving the oxidation of the O 2− ions charge compensated by extraction of Li + ions. Recent results…”
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6
The effect of volume change and stack pressure on solid‐state battery cathodes
Published in SusMat (Online) (01-10-2023)“…Abstract Solid‐state lithium batteries may provide increased energy density and improved safety compared with Li‐ion technology. However, in a solid‐state…”
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7
Oxygen redox chemistry without excess alkali-metal ions in Na2/3[Mg0.28Mn0.72]O2
Published in Nature chemistry (01-03-2018)“…The search for improved energy-storage materials has revealed Li- and Na-rich intercalation compounds as promising high-capacity cathodes. They exhibit…”
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8
The role of O2 in O-redox cathodes for Li-ion batteries
Published in Nature energy (01-08-2021)“…The energy density of Li-ion batteries can be improved by storing charge at high voltages through the oxidation of oxide ions in the cathode material. However,…”
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9
Oxygen redox chemistry without excess alkali-metal ions in Na 2/3 [Mg 0.28 Mn 0.72 ]O 2
Published in Nature chemistry (01-03-2018)“…The search for improved energy-storage materials has revealed Li- and Na-rich intercalation compounds as promising high-capacity cathodes. They exhibit…”
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10
Controlling Iron Versus Oxygen Redox in the Layered Cathode Na0.67Fe0.5Mn0.5O2: Mitigating Voltage and Capacity Fade by Mg Substitution
Published in Advanced energy materials (01-08-2022)“…Layered oxides for Na‐ion batteries containing Fe have attracted strong interest mainly due to their low cost. However, full oxidation of Fe3+ to Fe4+ is…”
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11
First-cycle voltage hysteresis in Li-rich 3d cathodes associated with molecular O2 trapped in the bulk
Published in Nature energy (01-10-2020)“…Li-rich cathode materials are potential candidates for next-generation Li-ion batteries. However, they exhibit a large voltage hysteresis on the first…”
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12
Trapped O2 and the origin of voltage fade in layered Li-rich cathodes
Published in Nature materials (01-06-2024)“…Oxygen redox cathodes, such as Li 1.2 Ni 0.13 Co 0.13 Mn 0.54 O 2 , deliver higher energy densities than those based on transition metal redox alone. However,…”
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13
Visualization of Tetrahedral Li in the Alkali Layers of Li-Rich Layered Metal Oxides
Published in Journal of the American Chemical Society (28-08-2024)“…Understanding Li+ ion diffusion pathways in Li-rich layered transition metal (TM) oxides is crucial for understanding the sluggish kinetics in anionic O2–…”
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14
Reversible Electron–Holes on O in P2‐type Na0.67Li0.1Ni0.3Mn0.6O2
Published in Advanced energy materials (01-11-2024)“…Achieving reversible O‐redox through the formation of electron–holes on O could hold the key to a new generation of high energy density Na‐ion cathodes…”
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15
Delocalized electron holes on oxygen in a battery cathode
Published in Nature energy (01-04-2023)“…Oxide ions in transition metal oxide cathodes can store charge at high voltage offering a route towards higher energy density batteries. However, upon charging…”
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16
Transition metal migration and O 2 formation underpin voltage hysteresis in oxygen-redox disordered rocksalt cathodes
Published in Nature communications (07-09-2022)“…Lithium-rich disordered rocksalt cathodes display high capacities arising from redox chemistry on both transition-metal ions (TM-redox) and oxygen ions…”
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17
Current-Density-Dependent Electroplating in Ca Electrolytes: From Globules to Dendrites
Published in ACS energy letters (10-07-2020)“…Multivalent cation rechargeable batteries, including those based on Ca, Mg, Al, etc., have attracted considerable interest as candidates for beyond Li-ion…”
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18
What Triggers Oxygen Loss in Oxygen Redox Cathode Materials?
Published in Chemistry of materials (14-05-2019)“…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…”
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19
Redox Chemistry and the Role of Trapped Molecular O 2 in Li-Rich Disordered Rocksalt Oxyfluoride Cathodes
Published in Journal of the American Chemical Society (30-12-2020)“…In the search for high energy density cathodes for next-generation lithium-ion batteries, the disordered rocksalt oxyfluorides are receiving significant…”
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Journal Article -
20
Lightning fast conduction
Published in Nature energy (01-03-2020)“…In the intensive search for higher performance Li-ion cathode materials the spotlight is firmly fixed on Li-rich compounds. Now, a strategy utilizing a…”
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