Constructing Safe and Durable High‐Voltage P2 Layered Cathodes for Sodium Ion Batteries Enabled by Molecular Layer Deposition of Alucone
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DOI: 10.1002/adfm.201910251
Abstract: Sodium ion batteries are a promising next-generation energy storage device for large-scale applications. However, the high voltage P2–O2 phase transition (>4.25 V vs Na/Na+) and metal dissolution of P2 layered cathodes into the electrolyte result… read more here.
Keywords: sodium ion; high voltage; alucone; ion batteries ... See more keywords
An Ion‐Dipole‐Reinforced Polyether Electrolyte with Ion‐Solvation Cages Enabling High–Voltage‐Tolerant and Ion‐Conductive Solid‐State Lithium Metal Batteries
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DOI: 10.1002/adfm.202107764
Abstract: Solid‐state electrolytes (SSEs) with sufficient ionic conduction, wide voltage window, flexible‐rigid interface, and ease of processibility are determinative to the development of energy‐dense solid‐state lithium metal batteries. Due to the low density and interfacial compatibility,… read more here.
Keywords: solid state; state lithium; voltage; high voltage ... See more keywords
A Surface Se-Substituted LiCo[O2- δ Seδ ] Cathode with Ultrastable High-Voltage Cycling in Pouch Full-Cells.
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DOI: 10.1002/adma.202005182
Abstract: Cycling LiCoO2 to above 4.5 V for higher capacity is enticing; however, hybrid O anion- and Co cation-redox (HACR) at high voltages facilitates intrinsic Oα - (α < 2) migration, causing oxygen loss, phase collapse, and electrolyte… read more here.
Keywords: high voltage; substituted lico; pouch full; surface substituted ... See more keywords
Elucidating and Mitigating High-voltage Degradation Cascades in Cobalt-free LiNiO2 Lithium-ion Battery Cathodes.
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DOI: 10.1002/adma.202106402
Abstract: LiNiO2 (LNO) is a promising cathode material for next-generation Li-ion batteries due to its exceptionally high capacity and cobalt-free composition that enables more sustainable and ethical large-scale manufacturing. However, its poor cycle life at high… read more here.
Keywords: high voltage; cobalt free; degradation; ion ... See more keywords
Robust Artificial Interphases Constructed by a Versatile Protein‐Based Binder for High‐Voltage Na‐Ion Battery Cathodes
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DOI: 10.1002/adma.202202624
Abstract: The multiple issues of unstable electrode/electrolyte interphases, sluggish reaction kinetics, and transition‐metal (TM) dissolution have long greatly affected the rate and cycling performance of cathode materials for Na‐ion batteries. Herein, a multifunctional protein‐based binder, sericin… read more here.
Keywords: high voltage; versatile protein; protein based; based binder ... See more keywords
Structure/Interface Coupling Effect for High‐Voltage LiCoO2 Cathodes
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DOI: 10.1002/adma.202204845
Abstract: LiCoO2 (LCO) is widely applied in today's rechargeable battery markets for consumer electronic devices. However, LCO operations at high voltage are hindered by accelerated structure degradation and electrode/electrolyte interface decomposition. To overcome these challenges, co‐modified… read more here.
Keywords: high voltage; structure; effect; electrode electrolyte ... See more keywords
Enabling High‐Voltage “Superconcentrated Ionogel‐in‐Ceramic” Hybrid Electrolyte with Ultrahigh Ionic Conductivity and Single Li+‐Ion Transference Number
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DOI: 10.1002/adma.202205560
Abstract: High room‐temperature ionic conductivities, large Li+‐ion transference numbers, and good compatibility with both Li‐metal anodes and high‐voltage cathodes of the solid electrolytes are the essential requirements for practical solid‐state lithium‐metal batteries. Herein, a unique “superconcentrated… read more here.
Keywords: ion transference; high voltage; electrolyte; conductivity ... See more keywords
High‐Voltage‐Enabled Stable Cobalt Species Deposition on MnO2 for Water Oxidation in Acid
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DOI: 10.1002/adma.202207066
Abstract: The design and maintenance of highly active sites in an acidic environment is vital and challenging for the oxygen evolution reaction (OER). In this work, it is found that the obtained CoO2 under high applied… read more here.
Keywords: cobalt species; high voltage; cobalt; enabled stable ... See more keywords
AC Magnetron Sputtering: An Industrial Approach for High‐Voltage and High‐Performance Thin‐Film Cathodes for Li‐Ion Batteries
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DOI: 10.1002/admi.202002125
Abstract: Industrial‐oriented mid‐frequency alternating current (MF‐AC) magnetron sputtering technique is used to fabricate LiNi0.5Mn1.5O4 high‐voltage thin‐film cathodes. Films are deposited on bare stainless‐steel substrate at room temperature and then annealed to induce crystallization in disordered spinel… read more here.
Keywords: film; performance; spectroscopy; high voltage ... See more keywords
Unblocking Oxygen Charge Compensation for Stabilized High‐Voltage Structure in P2‐Type Sodium‐Ion Cathode
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DOI: 10.1002/advs.202200498
Abstract: Layered transition‐metal (TM) oxides are ideal hosts for Li+ charge carriers largely due to the occurrence of oxygen charge compensation that stabilizes the layered structure at high voltage. Hence, enabling charge compensation in sodium layered… read more here.
Keywords: high voltage; charge compensation; sodium; charge ... See more keywords
Interface Engineering via Regulating Electrolyte for High‐Voltage Layered Oxide Cathodes‐Based Li‐Ion Batteries
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DOI: 10.1002/advs.202206714
Abstract: Li‐rich and Ni‐rich layered oxides as next‐generation high‐energy cathodes for lithium‐ion batteries (LIBs) possess the catalytic surface, which leads to intensive interfacial reactions, transition metal ion dissolution, gas generation, and ultimately hinders their applications at… read more here.
Keywords: high voltage; ion batteries; lithium; interface ... See more keywords