Using High‐Entropy Configuration Strategy to Design Spinel Lithium Manganate Cathodes with Remarkable Electrochemical Performance

Small, Journal Year: 2025, Volume and Issue: 21(7)

Published: Jan. 6, 2025

Abstract Owing to its abundant manganese source, high operating voltage, and good ionic diffusivity attributed 3D Li‐ion diffusion channels. Spinel LiMn 2 O 4 is considered a promising low‐cost positive electrode material in the context of reducing scarce elements such as cobalt nickel from advanced lithium‐ion batteries. However, rapid capacity degradation inadequate rate capabilities induced by Jahn–Teller distortion dissolution have limited large‐scale adoption spinel for decades. In this study, 1.98 Mg 0.005 Ti Sb Ce (HE‐LMO) with remarkable interfacial structural cycling stability developed based on complex concentrated doping strategy. The initial discharge retention HE‐LMO are 111.51 mAh g −1 90.55% after 500 cycles at 1 C. as‐prepared displays favorable stability, significantly surpassing pristine sample. Furthermore, theoretical calculations strongly support above finding. has higher more continuous density states Fermi energy level robust bonded electrons among Mn─O atom pairs. This research contributes field high‐entropy modification establishes facile strategy designing manganese‐based batteries (LIBs).

Language: Английский

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Optimising the regeneration process of spent lithium‑cobalt oxide cathode through performance analysis model

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 110, P. 115132 - 115132

Published: Jan. 5, 2025

Language: Английский

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Upgraded lithium storage performance of reduced graphene oxide wrapped Mn2SnO4 assembled using exfoliated graphene and MnSn(OH)6 well-confined by polyethylene oxide–polypropylene oxide–polyethylene oxide template

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 632, P. 236344 - 236344

Published: Jan. 29, 2025

Language: Английский

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Carbonaceous Materials as Anodes for Lithium-Ion and Sodium-Ion Batteries

Batteries, Journal Year: 2025, Volume and Issue: 11(4), P. 123 - 123

Published: March 25, 2025

The increasing global population and, thus, energy demand have made research into renewable sources more critical. Lithium-ion batteries (LIBs) and sodium-ion (SIBs) been recognized as the most promising technologies for storing effectively addressing this demand. Carbonaceous materials are widespread anode material due to their fascinating features, such high theoretical capacity, electrical conductivity, excellent structural stability. Additionally, these materials’ abundance, cost-effectiveness, environmental friendliness emphasized need further investigation development. Among carbon-based materials, graphite (both artificial natural) stands out ubiquitous its layered crystal structure, mechanical strength, long cycle life, safety profile, making it ideal intercalation with lithium sodium. In recent years, extensive has conducted enhance efficiency of anodes ultimately, overall performance batteries. review, role carbonaceous in lithium-ion was comprehensively investigated, focusing on advancements synthesizing optimizing graphite. Furthermore, mechanism factors influencing electrochemical properties both LIBs SIBs were extensively discussed. This work also provides a holistic perspective differences between two types batteries, highlighting cost, applications, future potential advancement.

Language: Английский

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4.85 V high-voltage lithium ion battery enabled by an in-situ formed Lewis acid-base complex multifunctional additive and nanocomposite electrodes

Journal of Energy Storage, Journal Year: 2025, Volume and Issue: 119, P. 116435 - 116435

Published: April 1, 2025

Language: Английский

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Enhanced Electrochemical Stability of Solid‐State Electrolyte‐Coated High‐Voltage LiNi_0.5Mn_1.5O₄ Cathodes in Li‐Ion Batteries

Energy & environment materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 17, 2025

Spinel‐structured LiNi 0.5 Mn 1.5 O 4 cathodes in lithium‐ion batteries have gained attention for their high operating voltage, which provides energy density, and cost advantages due to the absence of cobalt. However, issues such as low cycle thermal stabilities been identified, with side reactions occurring at electrode/electrolyte interface during continuous charge/discharge cycles that degrade electrode performance. Herein, we first optimized using Pechini sol–gel method achieve uniform particles controlled calcination temperatures. We then employed density functional theory electrochemical testing identify optimal conditions. Uniform coating surface oxide solid electrolyte Li 6.28 Al 0.24 La 3 Zr 2 12 (LALZO) was confirmed, aiming improve conductivity enhance stability. As a result, formation layer on suppressed blocked contact, leading an increase ion conductivity. This improvement resulted enhanced rate capability significant retention over 100 0.2 C. Additionally, resistance significantly improved layer, demonstrating reduced voltage decay overvoltage Finally, stability enhanced, improving after

Language: Английский

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Enhancing performance and sustainability of lithium manganese oxide cathodes with a poly(ionic liquid) binder and ionic liquid electrolyte

Journal of Power Sources Advances, Journal Year: 2024, Volume and Issue: 30, P. 100161 - 100161

Published: Oct. 15, 2024

Language: Английский

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Effects of co-coating La2O3 and TiO2 on tissue morphology and electrochemical properties of LiMn2O4 cathode materials

Ionics, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 27, 2024

Language: Английский

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