The Charge Self‐Regulation Effect Induced by Microcrystalline‐Amorphous Heterointerface Network Toward Fast Charging Sodium Ion Batteries

Advanced Energy Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 5, 2025

Abstract Sodium‐ion batteries (SIBs), recognized for their abundant resource availability, are emerging as a viable alternative to conventional batteries. Nevertheless, sluggish electrons/ions kinetics impedes further advancement in SIBs technology. Herein, novel microcrystalline‐MoSe 2 /amorphous‐MoSe x O y (C‐MoSe /A‐MoSe ) is developed through situ low‐temperature oxidation of crystalline MoSe . The microcrystalline acts robust framework, while the amorphous phase fills interstitial spaces. This anode material characterized by an optimized microcrystalline‐amorphous heterointerface. resultant charge self‐regulation effect can be exploited modulate active electron states, thereby ensuring high‐speed and stable sodium storage performance. heterointerface demonstrates ultrahigh specific capacity (641.0 mAh g −1 at 0.5 A maintains splendid rate performances up 100 (324.2 ). Detailed theoretical experimental researches indicate that enhanced performance results from production electronic which initiated C‐MoSe , featuring Mo─Se bonds, regulates interfacial redistribution facilitate transfer across interface between phases. findings suggest effect, prompted network, inherently accelerates electron/ion transport, offering promising electrode design strategy fast‐charging

Язык: Английский

---

Deep oxygen-crosslinking and self-coating synergetic engineering on pitch-based hard carbon anode for sodium-ion batteries

Journal of Colloid and Interface Science, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

---

Molecular Stitching in Polysaccharide Precursor for Fabricating Hard Carbon with Ultra‐High Plateau Capacity of Sodium Storage

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 24, 2025

High energy density of sodium-ion batteries (SIBs) requires high low-voltage capacity and initial Coulombic efficiency for hard carbon. However, simultaneously achieving both characteristics is a substantial challenge. Herein, unique molecular stitching strategy proposed to edit the polymeric structure common starch synthesizing cost-effective carbon (STHC-MS). A mild air-heating treatment toward employed trigger esterification reaction between carboxyl hydroxy groups, which can effectively connect branched polysaccharide chains thereby constructing highly cross-linked network. In contrast with pristine branched-chain starch, cross-linking structured precursor evolves into twisted graphitic lattices creating large population closed ultramicro-pores (<0.3 nm) enabling storage massive sodium clusters. Resultantly, STHC-MS delivers reversible 348 mAh g-1 remarkable (below 0.1 V) 294 g-1, becomes more attractive by combining 93.3%. Moreover, exhibits outstanding stability 0.008% decay per cycle over 4800 cycles at 1 g-1. STHC-MS||Na3V2(PO3)4 full cells achieve an 266 Wh kg-1, largely surpassing commercial carbon-based counterpart. This work opens avenue molecular-level modulation in organic precursors developing high-performance SIBs.

Язык: Английский

---

Advanced hard carbon materials for practical applications of sodium-ion batteries developed by combined experimental, computational, and data analysis approaches

Progress in Materials Science, Год журнала: 2024, Номер unknown, С. 101401 - 101401

Опубликована: Окт. 1, 2024

Язык: Английский

---

Innovative Synthesis and Sodium Storage Enhancement of Closed-Pore Hard Carbon for Sodium-Ion Batteries

Energy storage materials, Год журнала: 2024, Номер 74, С. 103867 - 103867

Опубликована: Окт. 28, 2024

Язык: Английский

---

Crosslinking modification of starch improves the structural stability of hard carbon anodes for high-capacity sodium storage

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 678, С. 1142 - 1150

Опубликована: Сен. 24, 2024

Язык: Английский

---

Improving sodium ion storage performance by heteroatom strategy with nitrogen and sulfur doping carbon sheets

Journal of Energy Storage, Год журнала: 2025, Номер 111, С. 115412 - 115412

Опубликована: Янв. 14, 2025

Язык: Английский

---

Modification of Cellulose by Esterification Crosslinking to Manipulate Its Microstructure for Enhanced Sodium Storage in Hard Carbon

Batteries, Год журнала: 2025, Номер 11(1), С. 36 - 36

Опубликована: Янв. 20, 2025

The active hydroxyl group of cellulose plays a crucial role in regulating the microstructure cellulose-derived hard carbon, which ultimately affects its sodium storage capacity. Through small-angle X-ray scattering (SAXS) and atomic pair distribution function (PDF) analysis, we proved that modification by esterification crosslinking can introduce more closed pores into carbonized is beneficial for promoting ion storage. Our results demonstrate optimizing conditions used cross-linking modification, capacity carbon could be increased from 254 to 348 mAh g−1, with an increase plateau 140 230 g−1. This study makes significant contribution towards establishing industrial applications carbon.

Язык: Английский

---

Constructing carbonyl interface and closed pore structure via oxidative crosslinking in starch-derived hard carbon for enhanced sodium storage

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161863 - 161863

Опубликована: Март 1, 2025

Язык: Английский

---

N/O co-doped hollow sphere-like hard carbon with hierarchical pores for fast and high-capacity Na+/Li+ storage

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 162207 - 162207

Опубликована: Апрель 1, 2025

Язык: Английский

---