Reducing Surface Roughness to Achieve Li2CO3‐Existent Lithiophilic Interface in Garnet‐Type Solid‐State Batteries DOI Creative Commons
Jiaxu Zhang, Changhong Wang,

Jiamin Fu

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 28, 2024

Abstract The presence of Li 2 CO 3 has been identified as the cause poor lithophilicity in garnet‐type 7 La Zr O 12 (LLZO) solid‐state batteries. A ‐free garnet is expected to enhance Li/LLZO interface contact. However, permanently eradicating regenerative from LLZO surface extremely challenging and influence regenerated often ignored. Herein, it found that glossy pellets can also be perfectly wetted by molten Li, contradicting common belief lithiophobic. Therefore, reducing roughness allows directly lithium metal, regardless . Additionally, smooth exhibits better air stability due its reduced active area. symmetric cell with a pellet shows low interfacial impedance Ω cm high critical current density 1.4 mA − at 25 °C. This work highlights physics which significantly influences properties, apart chemistry.

Language: Английский

High‐Voltage Cathode Materials for Sodium‐Ion Batteries: Advances and Challenges DOI Creative Commons
Cuiling Ren,

Yulian Dong,

Yong Lei

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 17, 2025

Abstract Sodium‐ion batteries (SIBs) gain attention as a promising, cost‐effective, and resource‐abundant alternative, especially for large‐scale energy storage. Cathode materials play pivotal role in improving the electrochemical performance of SIBs, with high‐voltage cathodes providing enhanced density rate capacity, making SIBs suitable high‐power applications. Common cathode materials, such layered transition metal oxides, polyanionic compounds, Prussian blue analogs, each offer unique benefits. However, these face challenges under conditions, phase transitions, cation migration, oxygen loss, electrolyte degradation. This review discusses strategies to address challenges, including elemental doping, surface coatings, modified synthesis methods, interfacial adjustments, all aimed at enhancing stability materials. Here also explores how full‐cell design optimizations can further improve power density. By analyzing material degradation failure modes, this offers insights into development stable, high‐performance better safety broader application potential storage technologies.

Language: Английский

Citations

0
P‐Type Stacking Dominated Electrochemical Process Enables Fast Na+ Transport for High‐Energy P2/O3 Biphasic Cathodes DOI

Shuai Sun,

Xu Zhu, Haojie Dong

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 27, 2025

Abstract Fabricating P2/O3 intergrowth structure in layered cathode materials is a viable strategy to improve the electrochemical property of sodium‐ion batteries. Unfortunately, such biphasic have bear obscure thermodynamic formation process and complicated structure‐property associations between multiple phase transitions Na + diffusion kinetics at high state charge. Here this issue addressed by tailoring crystalline domains P2 O3 while reducing residual alkali content target P2/O3‐Na 0.8 Mg 0.06 Ni 0.34 Mn 0.54 Ti O 2 material, which consists 24.26% 75.74% phase. The distribution atomic resolution dynamic evolution identification are parsed out experimental scanning transmission electron microscopy FAULTS simulations. Moreover, dislocations boundary serve prevent O‐type stacking therefore allow most P‐type dominate deep Na‐depleted state, thereby facilitating ensure high‐rate capability. Consequently, material exhibits energy density 534 Wh kg −1 reversible capacity 110 mAh g 10 C. This work highlights importance modulation improving transport obtain high‐energy materials.

Language: Английский

Citations

0
Jahn‐Teller Effect in Sodium Layered Oxide Cathodes: Inducement Mechanisms, Mitigation Strategies, and Rational Utilizations DOI
Yanjiang Li,

Yan‐Fang Zhu,

Bing‐Bing Chen

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 2, 2025

Abstract The sodium‐layered transition metal oxides (Na x TMO 2 ) are regarded as the promising cathode for sodium‐ion batteries (SIBs) relying on their high theory capacity and cost‐effectiveness. Nevertheless, intrinsic lattice distortions caused by Jahn‐Teller active ions significantly degrade structural stability of Na , generally resulting in unsatisfactory electrochemical properties. In this review, begins introducing inducement mechanisms effect (TM) ions. Subsequently, restraining strategies well corresponding using element doping/substitutions, surface reconstructions, polyphase symbiosis, TM/oxygen/Na + vacancy manipulations summarized detail. Specifically, influences such mitigation deformation properties, phase evolution behaviors, TM dissolution characteristics, crystal comprehensively discussed. Furthermore, sensible utilization distortion is to build cathodes with and/or repaid ion transport kinetics well. end, challenges faced amelioration methods overviewed put forward research directions future trenchantly constrain 6 octahedron deformation. This work will provide more perceptions further studies SIBs.

Language: Английский

Citations

0
Structural Stability of Layered Oxides for Sodium-Ion Batteries: Insights and Strategies DOI

Xingyu Li,

Songlin Yu, Xiaolin Zhao

et al.

Energy storage materials, Journal Year: 2025, Volume and Issue: 79, P. 104303 - 104303

Published: May 5, 2025

Language: Английский

Citations

0
A soluble precursor facilitates ultra-fast synthesis of O3 layered oxides for sodium-ion batteries DOI

Chunying Wang,

Zekun Li,

Zhikai Miao

et al.

Science China Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 14, 2025

Language: Английский

Citations

0
In situ surface engineering O3-layered oxide cathode via Na3PO4/P3-layered oxide dual coating layers DOI
Mengmeng Yan, Zi‐Ao Jin,

P.S. Wang

et al.

Electrochimica Acta, Journal Year: 2025, Volume and Issue: unknown, P. 145911 - 145911

Published: Feb. 1, 2025

Language: Английский

Citations

0
Realizing reversible anionic redox based on a Na–O–Li configuration for Na-layered oxide cathodes with solid-solution reaction DOI
Mingjing Yang, Guangyu Zhang, Haiyan Hu

et al.

Chemical Communications, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 1, 2025

The incorporation of the Na–O–Li configuration activates and stabilizes anionic redox reactions, realizing complete solid-solution reaction, leading to significant improvements in capacity cycling stability.

Language: Английский

Citations

0
High‐Entropy Modulation on Na‐O Configuration Toward Ultrastable Sodium Layered Oxide DOI
Hao Chen, Ziming Wang, Yu Shi

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: May 8, 2025

Abstract Although O3‐type layered oxides are promising candidates as cathode materials in sodium‐ion batteries (SIBs), it is still plagued by poor stabilities owing to the inevitable degradation of Na‐O bond and subsequent side reactions exposed moist atmosphere. Here, a new high‐entropy oxide NaMn 0.4 Fe 0.3 Ni 0.2 M 0.1 O 2 (HE‐NaMFN, = Cu/Ti/Zn/Sn/Sb) developed modulation on 0.5 . This process involves implantation five metal atoms with different d ‐orbital electron numbers into oxide, increasing energy gap between p orbitals (Δ ‐ ) from 0.8 1.0 eV, associated reduced hybridization for resultant oxide. Benefited weakened metal‐O interaction, has suppressed configuration an enhanced binding energy, showing ultrastable feature after air exposure up 30 days. Consequently, discloses improved structure reversibility, achieving reversible capacity 156 mAh g −1 retention 90%, good rate capability long‐term cycling stability sodium storage.

Language: Английский

Citations

0
Constructing Oxygen Vacancy to Stable Anionic Redox Reaction for High Energy Sodium Battery DOI

Tian-Zhen Ren,

Lu‐Kang Zhao,

Ziyu Mei

et al.

Advanced Energy Materials, Journal Year: 2025, Volume and Issue: unknown

Published: April 21, 2025

Abstract Constructing heterostructure for synergistic effect plays an indispensable role in enhancing the energy density and cycling stability of layered oxide sodium‐ion batteries. However, mechanisms formation effects remain inadequately understood. In this study, strategy controlling oxygen vacancies is carried out based on Na 2 Mn 3 O 7 cathode material. The vacancy can change coordination environment + occupancy between MnO layers, which a significant driving force structure transitions. Furthermore, ratio lattice to (L /V ) demonstrates distinct nonlinear relationship with structural proportion materials, be used as critical descriptor evaluating proportion. obtained (, 55 wt.%), P2‐Na 0.67 (P6 /mmc, 40 wt.%) O′3‐NaMnO (C/2 m, 5 retains anionic redox characteristics, exhibits high specific capacity 245 mAh g −1 596 Wh kg . heterogeneous interfaces provides numerous insertion/extraction sites presence minor amount effectively mitigates Jahn‐Teller at low voltages, stability. This work offers new insights into rational design application cathodes.

Language: Английский

Citations

0
Surface-modified spinel high entropy oxide with hybrid coating-layer for enhanced cycle stability and lithium-ion storage performance DOI Creative Commons

Feiyue Zhai,

Shengji Gao,

Wenfeng Zhang

et al.

RSC Advances, Journal Year: 2024, Volume and Issue: 14(45), P. 33124 - 33132

Published: Jan. 1, 2024

This work demonstrates a method to enhance the electrochemical performance of spinel HEO (FeCoNiCrMn) 3 O 4 by coating it with hybrid layer lithium titanate and carbon.

Language: Английский

Citations

1