A new active Li–Mn–O compound for high energy density Li-ion batteries

Freire, M. J. Modroño; Косова, Н. В.; Jordy, Christian; Chateigner, D.; Lebedev, Oleg I.; Maignan, A.; Pralong, V.

doi:10.1038/nmat4479

Cited by 299 publications

(261 citation statements)

References 29 publications

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“…The Li-Mn-O system is promising for the further enhancement of the specific capacity of the cathode material and, hence, the energy density of the Li-ion cells. Recently, a Li-Mn-O system of nominal composition, "Li 4 Mn 2 O 5 ", was reported as a novel cathode material with a specific capacity exceeding 300 mA·h/g by an Mn 3+ /Mn 5+ two-electron redox process, as was confirmed by magnetic measurements [43]. The oxide is prepared by a mechano-chemical route at ambient temperature using orthorhombic LiMnO 2 and Li 2 O with a 2:1 molar ratio.…”

Section: Introductionmentioning

confidence: 87%

Study of Cathode Materials for Lithium-Ion Batteries: Recent Progress and New Challenges

et al. 2017

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Amongst a number of different cathode materials, the layered nickel-rich LiNi y Co x Mn 1−y−x O 2 and the integrated lithium-rich xLi 2 MnO 3 ·(1 − x)Li[Ni a Co b Mn c ]O 2 (a + b + c = 1) have received considerable attention over the last decade due to their high capacities of~195 and~250 mAh·g −1 , respectively. Both materials are believed to play a vital role in the development of future electric vehicles, which makes them highly attractive for researchers from academia and industry alike. The review at hand deals with both cathode materials and highlights recent achievements to enhance capacity stability, voltage stability, and rate capability, etc. The focus of this paper is on novel strategies and established methods such as coatings and dopings.

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Section: Introductionmentioning

confidence: 87%

Study of Cathode Materials for Lithium-Ion Batteries: Recent Progress and New Challenges

et al. 2017

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“…66 Recently, Li 4 Mn 2 O 5 with the partial anion redox has been published. 67 A new system with Li 2 O-based materials has been also proposed in the literature.…”

Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

Solid-state Redox Reaction of Oxide Ions for Rechargeable Batteries

Yabuuchi¹

2017

Chem. Lett.

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Research interest for a solid-state redox reaction of oxide ions (oxygen) is rapidly increasing for rechargeable battery applications. This article reviews the history and development of charge compensation mechanisms with oxide ions for electrode materials of batteries. Reversible and irreversible processes are observed after the oxidation of oxide ions, and it highly depends on the natures of chemical bonds between transition metals and oxide ions. Future possibility of high-energy lithium/sodium batteries with the oxide ion redox is also discussed.

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“…As mentioned earlier, the pristine cathode materials suffer from structural degradation in long-term cycling in LIBs at elevated temperatures and under high current operation. [45][46][47][48] Therefore, the efficient usage of oxygen atoms for prolonging the safety life of cathode materials and promoting high energy density could be a potential future research challenge. An early study by Dahn and co-workers investigated the influence of simple heattreatment of LCO on its electrochemical performance at 4.5 V vs Li and concluded that the poor performance of the battery was possibly associated with unwanted side reactions of LCO with the electrolyte and that its electrochemical properties were improved without the necessity for any surface coating with foreign materials.…”

Section: Lithium-ion Batteriesmentioning

confidence: 99%

Feasibility of Cathode Surface Coating Technology for High‐Energy Lithium‐ion and Beyond‐Lithium‐ion Batteries

et al. 2017

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Cathode material degradation during cycling is one of the key obstacles to upgrading lithium-ion and beyond-lithium-ion batteries for high-energy and varied-temperature applications. Herein, we highlight recent progress in material surface-coating as the foremost solution to resist the surface phase-transitions and cracking in cathode particles in mono-valent (Li, Na, K) and multi-valent (Mg, Ca, Al) ion batteries under high-voltage and varied-temperature conditions. Importantly, we shed light on the future of materials surface-coating technology with possible research directions. In this regard, we provide our viewpoint on a novel hybrid surface-coating strategy, which has been successfully evaluated in LiCoO -based-Li-ion cells under adverse conditions with industrial specifications for customer-demanding applications. The proposed coating strategy includes a first surface-coating of the as-prepared cathode powders (by sol-gel) and then an ultra-thin ceramic-oxide coating on their electrodes (by atomic-layer deposition). What makes it appealing for industry applications is that such a coating strategy can effectively maintain the integrity of materials under electro-mechanical stress, at the cathode particle and electrode- levels. Furthermore, it leads to improved energy-density and voltage retention at 4.55 V and 45 °C with highly loaded electrodes (≈24 mg.cm ). Finally, the development of this coating technology for beyond-lithium-ion batteries could be a major research challenge, but one that is viable.

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A new active Li–Mn–O compound for high energy density Li-ion batteries

Cited by 299 publications

References 29 publications

Study of Cathode Materials for Lithium-Ion Batteries: Recent Progress and New Challenges

Study of Cathode Materials for Lithium-Ion Batteries: Recent Progress and New Challenges

Solid-state Redox Reaction of Oxide Ions for Rechargeable Batteries

Feasibility of Cathode Surface Coating Technology for High‐Energy Lithium‐ion and Beyond‐Lithium‐ion Batteries

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