Enabling High-Voltage and Long Lifespan Sodium Batteries via Single-Crystal Layer-Structured Oxide Cathode Material

ACS Nano, Год журнала: 2025, Номер unknown

Опубликована: Янв. 10, 2025

Manganese-based layer-structured transition metal oxides are considered promising cathode materials for future sodium batteries owing to their high energy density potential and industrial feasibility. The grain-related anisotropy electrode/electrolyte side reactions, however, constrain cycling lifespan, particularly at voltages. Large-sized single-crystal O3-typed Na[Ni0.3Mn0.5Cu0.1Ti0.1]O2 was thus designed successfully synthesized toward high-voltage long-lifespan batteries. grain-boundary-free structure unidirectional Na+ diffusion channels enable a faster rate electronic conductivity. Meanwhile, the large-area exposed (003) crystal plane can not only exhibit higher barrier electrode–electrolyte reactions but also alleviate interlayer sliding structural collapse during charge–discharge processes. lattice oxygen in contact with electrolyte stabilized, TMO6 octahedral integrity maintained as well. A specific capacity of 160.1 mAh g–1 current 0.1 C demonstrated. Coupled hard carbon anode, full cell demonstrate an excellent stability, achieving 141.1 C. After 100 cycles 2 C, retention is 97.3%.

Язык: Английский

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Tuning surface chemistry to reduce the step-like degradation of LiCoO2 at 4.6 V

Nano Energy, Год журнала: 2024, Номер 125, С. 109537 - 109537

Опубликована: Март 23, 2024

Язык: Английский

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Scalable Precise Nanofilm Coating and Gradient Al Doping Enable Stable Battery Cycling of LiCoO₂ at 4.7 V

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(32)

Опубликована: Май 13, 2024

Abstract The quest for smart electronics with higher energy densities has intensified the development of high‐voltage LiCoO 2 (LCO). Despite their potential, LCO materials operating at 4.7 V faces critical challenges, including interface degradation and structural collapse. Herein, we propose a collective surface architecture through precise nanofilm coating doping that combines an ultra‐thin LiAlO layer gradient Al. This not only mitigates side reactions, but also improves Li + migration kinetics on surface. Meanwhile, Al inhibited severe lattice distortion caused by irreversible phase transition O3−H1−3−O1, thereby enhanced electrochemical stability during cycling. DFT calculations further revealed our approach significantly boosts electronic conductivity. As result, modified exhibited outstanding reversible capacity 230 mAh g −1 V, which is approximately 28 % than conventional 4.5 V. To demonstrate practical application, cathode structure shows improved in full pouch cell configuration under high voltage. excellent cycling stability, retaining 82.33 after 1000 cycles multifunctional modification strategy offers viable pathway application materials, setting new standard high‐energy‐density long‐lasting electrode materials.

Язык: Английский

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Modulating the Li‐Ion Transport Pathway of Succinonitrile‐Based Plastic Crystalline Electrolytes for Solid‐State Lithium Metal Batteries

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Сен. 18, 2024

Abstract Succinonitrile (SCN) based plastic crystal electrolytes (SPCEs) have attracted much attention for lithium metal batteries due to their considerable ionic conductivity and thermal stability. Insufficient mechanical properties, weak reductive stability, the presence of free SCN molecules can result in adverse interfacial reactions. Polymer introduction has been explored address these challenges. However, polymer affects state, leading reduced conductivity, potentially limited segmental motion at room temperature. Herein, a cross‐linked network strategy is proposed modify Li‐ion transport pathway SPCE, aiming significantly improve conductivity. The strong interaction between matrix enhances mutual solubility, reduces crystallinity SCN, forms rapid conduction (polymer—[SCN—Li + ]). SPCE increases 1.28 mS cm −1 , with migration number ( t Li+ ) also rising 0.7. Electrochemical performances Li symmetrical, Li||LiFePO 4 Li||LiNi 0.8 Co 0.1 Mn O 2 cells show significant improvement both temperature 0 °C. These findings suggest that designing structures SPCEs holds promise solid‐state battery applications.

Язык: Английский

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In‐device Battery Failure Analysis

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 31, 2025

Lithium-ion batteries are indispensable power sources for a wide range of modern electronic devices. However, battery lifespan remains critical limitation, directly affecting the sustainability and user experience. Conventional failure analysis in controlled lab settings may not capture complex interactions environmental factors encountered real-world, in-device operating conditions. This study analyzes commercial wireless earbud as model system within their intended usage context. Through multiscale multimodal characterizations, degradations from material level to device correlated, elucidating pattern that is closely tied specific configuration The findings indicate ultimate mode determined by interplay materials, cell structural design, microenvironment, such temperature gradients fluctuations. holistic, perspective on influences provides insights integration enhancing reliability electronics.

Язык: Английский

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A “three-in-one” strategy via La2O3-ZrO2 coating to effectively enhance the electrochemical performance of LiCoO2

Journal of Alloys and Compounds, Год журнала: 2024, Номер 989, С. 174377 - 174377

Опубликована: Апрель 2, 2024

Язык: Английский

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In situ multifunctional surface design for high-performance 4.6 V LiCoO2

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 163516 - 163516

Опубликована: Май 1, 2025

Язык: Английский

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Achieving Uniform Ti/P Co‐Modifications for Optimized Li⁺ Transport Kinetics of LiCoO₂

Advanced Functional Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 19, 2025

Abstract Recently, the deteriorated Li + transport kinetics of LiCoO 2 (LCO) due to presence uneven surface coatings and dopants has long puzzled researchers. Herein, by using hydrolysis tetrabutyl titanate (C 16 H 36 O 4 Ti), interaction between LCO LiH PO is effectively regulated, constructing uniform 3 deposit Ti‐enriched rocksalt (RS) phase on TP‐LCO. The ultrathin RS can stabliize lattice oxygen enhance kinetics, suppressing Co/O loss structural collapse. Simultaneously, uniformly distributed deposits serve as a substrate that facilitates formation reinforced P‐enriched cathode‐electrolyte interphase (CEI), ensuring long‐term cycling stability. Benefiting from synergistic effect bilayer structure, TP‐LCO presents high capacity 181.7 mA h g −1 at current 8 C in TP‐LCO/Li cell, retention 90.9% after 600 cycles 1 TP‐LCO/graphite cell.

Язык: Английский

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Applications of All‐Solid‐State Lithium‐Ion Batteries Across Wide Temperature Ranges: Challenges, Progress, and Perspectives

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 26, 2025

Abstract All‐solid‐state lithium‐ion batteries (ASSLBs) have garnered significant attention due to their superior safety performance and high energy density, making them a promising next‐generation storage technology with broad application potential. However, is significantly affected by temperature extremes. At low temperatures, ion transport hindered, leading severe battery polarization. Conversely, at internal side reactions phase transitions are exacerbated, which accelerates material degradation thermal failure. These challenges limit the development widespread adoption of ASSLBs. Therefore, expanding operational range ASSLBs essential for commercial viability. This review systematically examines impact changes on electrode materials, solid‐state electrolytes (SSE), interfaces ASSLBs, especially describing Li + mechanisms different components failure materials. Subsequently analyses ponders current solutions in this field. Finally, future research directions enhancing under extreme temperatures proposed.

Язык: Английский

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Scalable Precise Nanofilm Coating and Gradient Al Doping Enable Stable Battery Cycling of LiCoO₂ at 4.7 V

Angewandte Chemie, Год журнала: 2024, Номер 136(32)

Опубликована: Май 13, 2024

Abstract The quest for smart electronics with higher energy densities has intensified the development of high‐voltage LiCoO 2 (LCO). Despite their potential, LCO materials operating at 4.7 V faces critical challenges, including interface degradation and structural collapse. Herein, we propose a collective surface architecture through precise nanofilm coating doping that combines an ultra‐thin LiAlO layer gradient Al. This not only mitigates side reactions, but also improves Li + migration kinetics on surface. Meanwhile, Al inhibited severe lattice distortion caused by irreversible phase transition O3−H1−3−O1, thereby enhanced electrochemical stability during cycling. DFT calculations further revealed our approach significantly boosts electronic conductivity. As result, modified exhibited outstanding reversible capacity 230 mAh g −1 V, which is approximately 28 % than conventional 4.5 V. To demonstrate practical application, cathode structure shows improved in full pouch cell configuration under high voltage. excellent cycling stability, retaining 82.33 after 1000 cycles multifunctional modification strategy offers viable pathway application materials, setting new standard high‐energy‐density long‐lasting electrode materials.

Язык: Английский

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