Lithium Batteries: Computational Design and Preparation of Cation‐Disordered Oxides for High‐Energy‐Density Li‐Ion Batteries (Adv. Energy Mater. 15/2016)

Urban, Alexander; Matts, Ian L; Abdellahi, Aziz; Ceder, Gerbrand

doi:10.1002/aenm.201670089

Cited by 2 publications

(2 citation statements)

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“…2b). 68 Monte-Carlo Percolation Simulations was proposed by Lee's group 52 to reveal the fact that cation disordered structure with Liexcess results into the formation of 0-TM percolation channels for Lithium ions diffusion. Contrasting with the layered cathodes that usually suffer from interlayer stacking issues, Li/Ni cationic mixing, particle cracking or even structural collapse in lithium ions deintercalation process under high voltage condition, DRXs compounds are quite more stable, because random cation distribution can suppress volume changes and remedy problems related to structural degradation during charge and discharge.…”

Section: Composition and Structurementioning

confidence: 99%

Review—Recent Progress of Lithium-Rich Cation Disordered Rocksalt Cathode for High Performance Lithium-Ion Batteries

Wang,

Shi

et al. 2024

J. Electrochem. Soc.

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The growing demand for energy storage application has facilitated the development of Li-ion rechargeable batteries (LIBs). As such, there is an urgent need to design electrodes with a high specific energy and long cycle life. The evolution of conventional LIB cathode materials in past 30 years has arrived at a bottleneck. Fortunately, the finding of the lithium-rich cation disordered rocksalt (DRXs) has largely broadened the element ranges of the promising cathode in the past several years. Compared with the classical cation-ordered oxides, the DRXs display a large charge storage capacity based on both transition metal and oxygen redox capacity. In addition, their wide compositional space and cobalt-free characteristic would greatly reduce production costs in promoting the commercialization process. Herein, we make an overview of the recent progress for DRX materials, in terms of their compositions and structure, Li diffusion, charge storage mechanisms, and different redox centra-based system. The key challenges to practical application are also discussed. Last but not least, in order to design high-performance DRXs, we outlined perspectives in developing DRXs for next generation of LIB cathodes.

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Section: Composition and Structurementioning

confidence: 99%

Review—Recent Progress of Lithium-Rich Cation Disordered Rocksalt Cathode for High Performance Lithium-Ion Batteries

Wang,

Shi

et al. 2024

J. Electrochem. Soc.

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“…Until recently, cation disorder between Li and transition metal (TM) sites was considered detrimental to battery performance. Although this has been proven true in some cases, experimental and theoretical studies [11] conducted by Ceder et al [12,13] have indicated that Li and TM crystallized in a disordered rock salt (DRX) lattice have the potential to reversibly store Li by exploiting the Li percolation network. [13] The discovery of the percolation network has opened up the material space for cathodes, allowing the use of various transition metal redox chemistries for charge compensation during (de)lithiation, for example, Mn 3þ =Mn 4þ , [14,15] Mn 2þ =Mn 4þ , [13,16] Cr 3þ =Cr 5þ , [17] Mo 3þ =Mo 6þ , [18] and V 3þ =V 5þ .…”

Section: Introductionmentioning

confidence: 99%

Exposure History and its Effect Towards Stabilizing Li Exchange Across Disordered Rock Salt Interfaces

et al. 2021

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The application of lithium rich disordered rock salts (DRX) as cathode materials has greatly expanded the materials space for high energy density cathodes. These materials are able to consistently achieve capacities higher than 250 mAhg À 1 via a complex percolation based intercalation mechanism. Most current DRX materials face significant capacity fade when cycled over an extended period. One of the factors responsible for this could be deleterious side effect of interface reactions between the electrode and electrolyte at high voltage. We aim to focus on one aspect of this interaction, i.e the effect of exposure to electrolyte on the surface and its effect on the electrochemical properties of Li 1:2 Mn 0:625 Nb 0:175 O 1:95 F 0:05 (LMNOF) powder. LMNOF was systematically treated in an electrolyte solution for varying periods of time at an elevated temperature. Treated samples exhibit surface layer modification (removal of F rich surface layer), leading to a 10 % improvement in the capacity retention behavior of LMNOF. Surface and bulk based measurements indicate an increase in disorder and gradual removal of F and Li. All of these processes mimic an aging process similar to cycling. This a priori formed interface allows for increased stability with respect to retention of capacity and oxygen loss.

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Lithium Batteries: Computational Design and Preparation of Cation‐Disordered Oxides for High‐Energy‐Density Li‐Ion Batteries (Adv. Energy Mater. 15/2016)

Cited by 2 publications

References 0 publications

Review—Recent Progress of Lithium-Rich Cation Disordered Rocksalt Cathode for High Performance Lithium-Ion Batteries

Review—Recent Progress of Lithium-Rich Cation Disordered Rocksalt Cathode for High Performance Lithium-Ion Batteries

Exposure History and its Effect Towards Stabilizing Li Exchange Across Disordered Rock Salt Interfaces

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