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

ACS Nano, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 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%.

Language: Английский

---

Research on Interfacial Construction and Energy Storage Performance of Polymetallic Heterostructure Based on Zn–Ni 3d Orbital Modulation and DFT Study

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

Published: Feb. 16, 2025

In this study, ZnCo2O4 nanosheets and NiCo2O4 nanowires were successfully grown on nickel foam as anode materials for lithium-ion batteries by a low-temperature hydrothermal immersion method. The offered an enlarged electrically active surface area, the provided support nanosheets, thereby forming heterojunction interface. ZnCo2O4/NiCo2O4 demonstrated favorable electrochemical performance in tests. terms of its rated performance, capacity composite electrode recovered to 1050 mAh g-1 when current density ranged from 0.1 1 A g-1; was maintained even returned after 60 cycles. diffusion coefficient lithium ions (DLi+) increased due reduction interfacial contact resistance under electric field heterostructure, they continuously activated during repeated This further significantly enhanced activity electrode. analysis results based functional theory revealed hybridization 3d orbitals Ni Zn augmented electronic state occupancy near Fermi energy level. process accompanied migration electrons, leading decrease band gap. Meanwhile, Li+ barrier decreased, conductivity enhanced.

Language: Английский

---

Strategies to Suppress Polysulfide Dissolution and Its Effects on Lithium–Sulfur Batteries

Batteries, Journal Year: 2025, Volume and Issue: 11(4), P. 139 - 139

Published: April 3, 2025

Lithium–sulfur batteries (LSBs), with a high energy density (2600 Wh kg−1) and theoretical specific capacity (1672 mA h g−1), are considered the most promising next-generation rechargeable storage devices. However, polysulfide dissolution shuttle effect cause severe fading rapid loss of active material; hence, these must be addressed first. This review provides an overview various strategies employed to immobilise polysulfides via trapping physical chemical adsorption using porous cathode designs, heterostructures, functionalised separators, polymer binders. The working mechanism each strategy is reviewed discussed, highlighting their advantages disadvantages, they analysed through comparisons battery performance limitations in terms practical applications. Finally, future prospects for design synthesis LSBs limit discussed.

Language: Английский

---

Preparation and properties of ZTA/alloyed high manganese steel composites

Journal of Materials Research and Technology, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 1, 2024

Language: Английский

---

Hard Carbon as Anodes for Potassium-Ion Batteries: Developments and Prospects

Inorganics, Journal Year: 2024, Volume and Issue: 12(12), P. 302 - 302

Published: Nov. 25, 2024

Potassium-ion batteries (PIBs) are regarded as a potential substitute for LIBs owing to the benefits of potassium’s abundance, low cost, and high safety. Nonetheless, practical implementation potassium-ion still encounters numerous challenges, with selection design anode materials standing out key factor impeding their progress. Hard carbon, characterized by its amorphous structure, specific surface area, well-developed pore facilitates insertion/extraction potassium ions, demonstrating excellent rate performance cycling stability. This review synthesizes recent advancements in hard carbon utilized PIB anodes, particular focus on storage mechanism, electrochemical properties, modification strategies carbon. Ultimately, we present summary current challenges future development directions materials, objective providing reference optimization PIBs.

Language: Английский

---

Development and fabrication of an advanced NVPF@C/rGO composite cathode for improved sodium-ion battery performance

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

Published: Nov. 5, 2024

Language: Английский

---

A novel NASICON-typed Na3V1.96Cr0.03Mn0.01(PO4)2F3 cathode for high-performance Na-ion batteries

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 104, P. 114596 - 114596

Published: Nov. 18, 2024

Language: Английский

---