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
Ni‐Ion‐Chelating Strategy for Mitigating the Deterioration of Li‐Ion Batteries with Nickel‐Rich Cathodes (Adv. Sci. 5/2023)
Sign Up to like & getrecommendations! Published in 2022 at "Advanced Science"
DOI: 10.1002/advs.202205918
Abstract: Ni‐rich cathodes are the most promising candidates for realizing high‐energy‐density Li‐ion batteries. However, the high‐valence Ni4+ ions formed in highly delithiated states are prone to reduction to lower valence states, such as Ni3+ and Ni2+,… read more here.
Keywords: chelating strategy; ion batteries; ion chelating; rich cathodes ... 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
Electrodeposited tungsten-rich Ni-W, Co-W and Fe-W cathodes for efficient hydrogen evolution in alkaline medium
Sign Up to like & getrecommendations! Published in 2019 at "Electrochimica Acta"
DOI: 10.1016/j.electacta.2019.06.087
Abstract: Abstract The search of active, stable and cost-effective non-noble electrocatalysts for hydrogen evolution reaction (HER) is essential for sustainable energy systems. In this study, the electrodeposited Ni-W, Co-W and Fe-W coatings having 5-30 at.% of… read more here.
Keywords: tungsten rich; hydrogen evolution; electrodeposited tungsten; rich cathodes ... See more keywords
Development of manganese-rich cathodes as alternatives to nickel-rich chemistries
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Power Sources"
DOI: 10.1016/j.jpowsour.2019.226706
Abstract: Abstract High-energy, inexpensive and safe electrochemistries have been the main goals of lithium-ion battery research for many years. Historically, manganese-based cathodes have long been studied for their attractive cost and safety characteristics [1]. However, due… read more here.
Keywords: nickel rich; development manganese; cathodes alternatives; rich cathodes ... See more keywords
Strained Phase Boundaries in Li-rich Cathodes; An Atomic Resolution Study
Sign Up to like & getrecommendations! Published in 2019 at "Microscopy and Microanalysis"
DOI: 10.1017/s143192761901095x
Abstract: Li-rich NMC cathodes are considered as the next generation of Li-ion battery cathodes with capacities of ⁓300 mAhg[1]. However, they suffer from rapid capacity and voltage decay that is linked to their structural instability [2].… read more here.
Keywords: microscopy; strained phase; structure; rich cathodes ... See more keywords
Adjusting Oxygen Redox Reaction and Structural Stability of Li- and Mn-Rich Cathodes by Zr-Ti Dual-Doping.
Sign Up to like & getrecommendations! Published in 2022 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.1c20880
Abstract: Li- and Mn-rich cathodes (LMRs) with cationic and anionic redox reactions are considered as promising cathode materials for high-energy-density Li-ion batteries. However, the oxygen redox process leads to lattice oxygen loss and structure degradation, which… read more here.
Keywords: oxygen redox; rich cathodes; oxygen; stability ... See more keywords
A Bifunctional Chemomechanics Strategy To Suppress Electrochemo-Mechanical Failure of Ni-Rich Cathodes for All-Solid-State Lithium Batteries.
Sign Up to like & getrecommendations! Published in 2022 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.2c02678
Abstract: Electrochemo-mechanical failure of Ni-rich cathodes leads to rapid performance degradation, and thus hinders their practical implementation in all-solid-state lithium batteries (ASSLBs). To solve this problem, herein, we propose a bifunctional chemomechanics strategy by protecting polycrystalline… read more here.
Keywords: electrochemo mechanical; mechanical failure; failure rich; state lithium ... See more keywords
Li gradients for Li-rich cathodes
Sign Up to like & getrecommendations! Published in 2019 at "Nature Energy"
DOI: 10.1038/s41560-019-0522-z
Abstract: Developing high capacity yet stable cathodes is key to advancing Li-ion battery technologies. Now, a new metal oxide cathode that is rich in Li with a gradient in Li concentration is shown to be stable… read more here.
Keywords: rich cathodes; gradients rich;
Reactive boride infusion stabilizes Ni-rich cathodes for lithium-ion batteries
Sign Up to like & getrecommendations! Published in 2021 at "Nature Energy"
DOI: 10.1038/s41560-021-00782-0
Abstract: Engineered polycrystalline electrodes are critical to the cycling stability and safety of lithium-ion batteries, yet it is challenging to construct high-quality coatings at both the primary- and secondary-particle levels. Here we present a room-temperature synthesis… read more here.
Keywords: infusion; rich cathodes; reactive boride; lithium ion ... See more keywords
Insights into interfacial chemistry of Ni-rich cathodes and sulphide-based electrolytes in all-solid-state lithium batteries.
Sign Up to like & getrecommendations! Published in 2022 at "Chemical communications"
DOI: 10.1039/d2cc01220k
Abstract: All-solid-state lithium batteries (ASSLBs) have attracted increasing attention recently because they are more safe and have higher energy densities than conventional lithium-ion batteries. In particular, ASSLBs composed of Ni-rich cathodes, sulphide-based solid-state electrolytes (SSEs) and… read more here.
Keywords: cathodes sulphide; chemistry; solid state; sulphide based ... See more keywords