Atomic-Scale Study of NASICON Type Electrode Material: Defects, Dopants and Sodium-Ion Migration in Na3V2(PO4)3 DOI Creative Commons

V. Seshan,

Poobalasuntharam Iyngaran,

Poobalasingam Abiman

и другие.

Physchem, Год журнала: 2024, Номер 5(1), С. 1 - 1

Опубликована: Дек. 30, 2024

Na3V2(PO4)3 (NVP), a NASICON-type material, has gained attention as promising battery cathode owing to its high sodium mobility and excellent structural stability. Using computational simulation techniques based on classical potentials density functional theory (DFT), we examine the defect characteristics, diffusion mechanisms, dopant behavior of NVP. The study found that Na Frenkel is most favorable intrinsic defect, supporting desodiation process necessary for capacity enabling vacancy-assisted Na-ion migration. migration anticipated through long-range zig-zag pathway with an overall activation energy 0.70 eV. K Sc preferentially occupy V sites without creating charge-compensating defects. Substituting Mg at site can simultaneously increase content by forming interstitials reducing band gap. Additionally, doping Ti promotes formation vacancies migration, leading notable improvement in electronic conductivity.

Язык: Английский

Carbon decorated Na₃V₂(PO₄)₃ Nanoparticles as a High-rate-capability Cathode for Fast Chargeable Sodium-ion Batteries DOI
Rui Liu, Yanze Li, Zheng Wang

и другие.

Electrochimica Acta, Год журнала: 2025, Номер unknown, С. 145945 - 145945

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

2

Activating Reversible V4+/V5+ Redox Couple in NASICON‐Type Phosphate Cathodes by High Entropy Substitution for Sodium‐Ion Batteries DOI Open Access

Siya Wang,

Jin Bai, Peiyao Wang

и другие.

Small, Год журнала: 2025, Номер unknown

Опубликована: Янв. 28, 2025

Abstract Vanadium‐based Na superionic conductor (NASICON) type materials (Na x VM(PO 4 ) 3 , M = transition metals) have attracted extensive attention when used as sodium‐ion batteries (SIBs) cathodes due to their stable structures and large + diffusion channels. However, the poor electrical conductivity mediocre energy density, which hinder practical applications. Activating V 4+ /V 5+ redox couple (V ≈4.1 vs /Na) is an effective way elevate density of SIBs, whereas irreversible phase severe structural distortion will inevitably result in fast capacity fading unsatisfactory rate capability. Herein, a high entropy regulation strategy proposed optimize detailed crystal structure improve reversibility crystalline transformation material. With activated reversible couple, structure, electrochemical kinetics, material 3.2 1.5 Fe 0.1 Al Cr Mn Cu (PO (NVMP‐HE) exhibits outstanding performance with highly specific 120.1 mAh g −1 at C excellent cycling stability (92.4% retention after 1000 cycles 20 C). Besides, situ X‐ray diffraction (XRD) measurement reveals that smooth three‐phase reaction involved this high‐entropy cathode existence mesophase facilitates transition.

Язык: Английский

Процитировано

1

Boosting the cyclability and electrochemical kinetics of Na4MnV(PO4)3/C cathode material through Zr doping for sodium-ion batteries DOI

Jiaxin Ou,

Ye Sun,

Yiwen Guo

и другие.

Journal of Energy Storage, Год журнала: 2025, Номер 112, С. 115568 - 115568

Опубликована: Янв. 29, 2025

Язык: Английский

Процитировано

1

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

Jiaqi Ke,

Laisuo Su

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

Опубликована: Фев. 19, 2025

Язык: Английский

Процитировано

1

β-Cyclodextrin inducing confinement effect enabling spherical Na3V2(PO4)3 with multielectron reaction and superior performance at extreme conditions for sodium-ion batteries DOI
Shuming Zhang, Tao Zhou,

Hongen Shi

и другие.

Journal of Energy Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

1

Active material blending strategy improves the comprehensive performance of electrode:A case study DOI
Wei Li, Yuan Qin,

Shini Lin

и другие.

Journal of Power Sources, Год журнала: 2025, Номер 631, С. 236275 - 236275

Опубликована: Янв. 24, 2025

Язык: Английский

Процитировано

0

Designing Crystalline/Amorphous NVNPF/NCK Cathode Toward High‐Performance Fully‐Printed Flexible Aqueous Rechargeable Sodium‐Ion Batteries (ARSIBs) DOI Creative Commons

Hehe Ren,

Jing Liang, Qun Liu

и другие.

Advanced Science, Год журнала: 2025, Номер unknown

Опубликована: Фев. 4, 2025

Abstract The flexible ARSIBs have great potential in portable and wearable electronics due to their high cost‐effectiveness, safety, amazing flexibility. Nevertheless, achieving both outstanding flexibility energy density remains a challenge. Herein, battery‐supercapacitor composite material Na 3 V 1.95 Ni 0.05 (PO 4 ) 2 F /10%NC‐KOH (NVNPF/NCK) with coexistence of crystalline amorphous phases is fabricated by loading nitrogenous carbon (NC) onto (NVNPF) etching KOH. It demonstrates specific capacity (187.26 mAh g −1 ), ultrahigh (262.16 Wh kg excellent cycle performance (the retention 81% at 1 C after 500 cycles). achieved doping ⁺ NC KOH, which generates vacancy defects, enhances structural stability, accelerates ion‐diffusion kinetics. Furthermore, the fully‐printed (F‐NTP//NVNPF/NCK) (60.37 (72.44 performance, are using screen‐printing technique based on NVNPF/NCK cathode NaTi 1.7 Fe 0.3 (F‐NTP) anode. To best authors' knowledge, F‐NTP//NVNPF/NCK highest‐performing ARSIB date. In particular, these batteries can achieve tunability shape size, integration, high‐throughput manufacturing. Thus, this work offer greater possibilities for development high‐performance ARSIBs.

Язык: Английский

Процитировано

0

Znfe2o4 Controlled Synthesis: Key to Improving Properties of Functional Ceramic Materials for Energy Storage Applications DOI
О. О. Шичалин, Nikita Ivanov, A. I. Seroshtan

и другие.

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0

Unlocking the Potential of Na2Ti3O7-C Hollow Microspheres in Sodium-Ion Batteries via Template-Free Synthesis DOI Creative Commons
Yonggang Sun, Yu Hu, Li Dong

и другие.

Nanomaterials, Год журнала: 2025, Номер 15(6), С. 423 - 423

Опубликована: Март 10, 2025

Layered sodium trititanate (Na2Ti3O7) is a promising anode material for sodium-ion batteries due to its suitable charge/discharge plateaus, cost-effectiveness, and eco-friendliness. However, slow Na+ diffusion kinetics, poor electron conductivity, instability during cycling pose significant challenges practical applications. To address these issues, we developed template-free method synthesize Na2Ti3O7-C hollow microspheres. The synthesis began with polymerization-induced colloid aggregation form TiO2–urea–formaldehyde (TiO2-UF) precursor, which was then subjected heat treatment induce inward crystallization, creating cavities within the structure, combined conductive carbon matrix, significantly enhanced performance rate capability of material. When used as an anode, microspheres exhibited high reversible capacity 188 mAh g−1 at 0.2C retained 169 after 500 cycles. Additionally, demonstrated excellent capacities 157, 133, 105, 77, 62, 45 current densities 0.5, 1, 2, 5, 10, 20C, respectively. This innovative approach provides new strategy developing high-performance battery anodes has potential advance field energy storage.

Язык: Английский

Процитировано

0

Presodiation technology: progress, strategy and prospects of sacrificial cathode additives in sodium-based energy storage systems DOI
Luoming Zhang, Bo Xiong, S. B. Gao

и другие.

Chemical Communications, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

The sacrificial cathode additive (SCA) method holds great promise for industrial application. This review explores recent progress in SCA presodiation technology, with a focus on optimizing strategies to develop near-ideal SCAs.

Язык: Английский

Процитировано

0