Reviving Sodium Tunnel Oxide Cathodes Based on Structural Modulation and Sodium Compensation Strategy Toward Practical Sodium‐Ion Cylindrical Battery

Advanced Materials, Год журнала: 2024, Номер 36(41)

Опубликована: Сен. 2, 2024

Abstract As a typical tunnel oxide, Na 0.44 MnO 2 features excellent electrochemical performance and outstanding structural stability, making it promising cathode for sodium‐ion batteries (SIBs). However, suffers from undesirable challenges such as surface residual alkali, multiple voltage plateaus, low initial charge specific capacity. Herein, an internal external synergistic modulation strategy is adopted by replacing part of the Mn with Ti to optimize bulk phase construct Ti‐containing epitaxial stabilization layer, resulting in reduced + transport kinetics improved water/air stability. Specifically, 0.85 0.15 O using water‐soluble carboxymethyl cellulose binder can realize capacity retention rate 94.30% after 1,000 cycles at 2C, stability further verified kilogram large‐up applications. In addition, taking advantage rich content Prussian blue analog (PBA), PBA‐Na 1‐x x composites are designed compensate insufficient oxide matched hard carbon achieve preparation coin full cell 18650 cylindrical battery satisfactory performance. This work enables application oxides SIBs first time promotes commercialization SIBs.

Язык: Английский

---

Enhancement of zinc-ion storage capability by synergistic effects on dual-ion adsorption in hierarchical porous carbon for high-performance aqueous zinc-ion hybrid capacitors

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 667, С. 700 - 712

Опубликована: Апрель 17, 2024

Язык: Английский

---

Constructing layered/tunnel interlocking oxide cathodes for sodium-ion batteries based on breaking Mn3+/Mn4+ equilibrium in Na0.44MnO2 via trace Mo doping

Composites Part B Engineering, Год журнала: 2024, Номер 284, С. 111664 - 111664

Опубликована: Июнь 28, 2024

Язык: Английский

---

O3/P2 Biphasic Layered Cathode Material for Stable Na-Ion Storage

Energy & Fuels, Год журнала: 2025, Номер unknown

Опубликована: Янв. 29, 2025

Язык: Английский

---

Ultrafast and Highly Efficient Sodium Ion Storage in Manganese‐Based Tunnel‐Structured Cathode

Advanced Functional Materials, Год журнала: 2024, Номер unknown

Опубликована: Сен. 2, 2024

Abstract Na 0.44 MnO 2 with tunnel structure is considered a promising low‐cost cathode material for sodium‐ion batteries. However, the sluggish + transport kinetics and low initial Coulombic efficiency restrict its practical applications in rechargeable Herein, manganese‐based tunnel‐structured high rate capability prepared by niobium doping sodium compensation. Via materials characterizations theoretical calculations, it demonstrated that proper amount of can effectively improve structural stability charge kinetics, resulting outstanding (76.6% capacity retained from 0.5 to 30 C) superior cycling performance (82.3% retention after 800 cycles at 5 optimized Nb‐doped (Na Mn 0.98 Nb 0.02 O ). Furthermore, NaCrO added into as self‐sacrificing compensation additive, close 100% achieved composite cathode. This work establishes facile strategy design advanced large‐scale energy storage applications.

Язык: Английский

---

Advancing High-Voltage Cathodes for Sodium-Ion Batteries: Challenges, Material Innovations and Future Directions

Energy storage materials, Год журнала: 2025, Номер 76, С. 104133 - 104133

Опубликована: Фев. 19, 2025

Язык: Английский

---

High-Performance B-Doped Na_0.44MnO₂ Cathode Materials for Sodium-Ion Batteries

ACS Omega, Год журнала: 2025, Номер unknown

Опубликована: Март 5, 2025

Na0.44MnO2 (NMO) is a promising cathode material for sodium-ion batteries (SIBs) due to its unique tunnel structure and derived sodium storage property. In this study, we prepared the doped Na0.44Mn0.98B0.02O2(NMOB0.02) observed that introducing optimal B improves electrochemical stability air stability. The Na0.44Mn0.98B0.02O2 releases an initial reversible specific capacity of 100.5 mAh g–1 at 0.2 C (1 = 120 mA g–1). Compared with undoped material, retention rate increases from 69.8 86.8% after 350 cycles 1 C, parameter evaluated 50 °C 63.6 88.9% 100 C. Both impedance spectra (EIS) GITT test results show proper doping capable promoting diffusion Na+, in situ X-ray diffraction (XRD) technique was employed demonstrate high reversibility NMOB0.02 during charge discharge processes. This study provides helpful reference other researchers design optimize materials excellent thermal

Язык: Английский

---

Regulation of gradient pores and heteroatom-doped sites in carbonaceous cathodes for promoting Zn-ion storage capability

Journal of Power Sources, Год журнала: 2025, Номер 644, С. 237072 - 237072

Опубликована: Апрель 22, 2025

Язык: Английский

---

Optimizing electrochemical performance of Na0.67Ni0.17Co0.17Mn0.66O2 with P2 structure via preparing concentration-gradient particles for sodium-ion batteries

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 662, С. 69 - 75

Опубликована: Фев. 6, 2024

Язык: Английский

---

Optimizing O3-type cathode materials with modified collector for sodium-ion batteries: Insights of interfacial reaction between collector and electrolyte

Journal of Power Sources, Год журнала: 2024, Номер 624, С. 235558 - 235558

Опубликована: Окт. 2, 2024

Язык: Английский

---