Cobalt Doping of Na2VTi(PO4)3 Enables a High-Energy NASICON-Type Cathode Material for Sodium-Ion Batteries DOI Open Access
Liang Zhou,

Mengyao Wang,

Hao Fan

и другие.

Materials, Год журнала: 2025, Номер 18(11), С. 2419 - 2419

Опубликована: Май 22, 2025

Natrium superionic conductor (NASICON) compounds have emerged as a rising star in the field of sodium-ion batteries (SIBs) owing to their stable framework structure and high Na+ ionic conductivity. The NASICON-structured Na2VTi(PO4)3 manifests significant potential storage material, characterized by decent rate capability cyclability. However, low redox Ti3+/Ti4+ undesirable energy density limit its practical applications. We developed Na3Co2/3V2/3Ti2/3(PO4)3 (NCTVP) cathode material doping an appropriate amount cobalt into Na2VTi(PO4)3. Cobalt introduces Co3+/Co2+ couple at ~4.1 V activates V5+/V4+ ~3.9 V, resulting significantly increased medium discharge voltage capacity. NCTVP demonstrates capacity over 160 mAh g−1 20 mA g−1. With ~2.7 reaches 432.0 Wh kg−1. also desirable cycling stability (87.4% retention for 100 cycles 50 g−1). In situ X-ray diffraction discloses solid solution reaction mechanism NCTVP, while galvanostatic intermittent titration technique fast diffusion kinetics. good cyclability full cells. This contribution effective approach construction NASICON materials SIBs.

Язык: Английский

Boosting structural stability and air stability towards layered oxide cathodes for potassium ion batteries DOI
Hong Chen,

Lu-Kang Zhao,

Xuejiao Cheng

и другие.

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 160252 - 160252

Опубликована: Фев. 1, 2025

Язык: Английский

Процитировано

1
Stable layered oxide cathode materials with ultra-low volume change for high-performance sodium-ion batteries DOI
Liang Gao, Jianing Yang, Qinfeng Zheng

и другие.

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161580 - 161580

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

1
Realizing the high stability of P2-type layered cathode materials for sodium-ion batteries based on the diagonal rule strategy DOI
Chen Wu, Yuxing Xu,

Jiechen Song

и другие.

Materials Today Energy, Год журнала: 2025, Номер unknown, С. 101822 - 101822

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0
Medium-Entropy P2 Layered Oxide Cathode Demonstrating Complete Solid-Solution Behavior for Enhanced Na-Ion Battery Performance DOI
Yixin Hua, Min Tan, Ming Liu

и другие.

Опубликована: Янв. 1, 2025

Язык: Английский

Процитировано

0
Modulating Surface Oxygen Coordination to Achieve Suppressed Phase Transitions and Enhanced Cyclic Stability in Na0.67Mn0.5Fe0.5O2 Cathodes for High-Energy and Low-Cost Na-Ion Batteries DOI

Kang Wu,

Peilin Ran, Lunhua He

и другие.

Inorganic Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Март 4, 2025

The layered iron manganese oxide cathodes accompanied by anionic redox reaction (ARR) activity show large promise of high-energy and economical sodium-ion batteries. However, the adverse surface oxygen lattice evolution caused irreversible ARR tends to lead poor cyclic stability severe voltage decay, which limits its commercial application. In this work, using Na0.67Mn0.5Fe0.5O2 (NMFO) as model compound, an optimization strategy modulating coordination through a simultaneous Li doping Li3PO4 coating is proposed achieve both triggered reversible processes. As revealed neutron diffraction techniques transmission electron microscopy tests, ions are successfully doped coated on NMFO cathode, respectively. optimized cathode expectedly shows not only enhanced specific capacity but also improved stability. excellent electrochemical properties ascribed suppressed detrimental P2-O2 phase transition, reversibility, thermal structural More broadly, work demonstrates feasibility activate stabilize ion-storage process.

Язык: Английский

Процитировано

0
Trace Mg2+ doping enhances structural stability of single-crystal layered oxides for sodium-ion batteries DOI
Han Xia, Xiaomei Li,

Ruiyun Chai

и другие.

Progress in Natural Science Materials International, Год журнала: 2025, Номер unknown

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

0
Medium-entropy P2-type layered metal oxide cathode demonstrating complete solid-solution behavior for improved Na-ion battery performance DOI
Yixin Hua, Min Tan, Ming Liu

и другие.

Journal of Colloid and Interface Science, Год журнала: 2025, Номер unknown, С. 137744 - 137744

Опубликована: Апрель 1, 2025

Язык: Английский

Процитировано

0
Cobalt Doping of Na2VTi(PO4)3 Enables a High-Energy NASICON-Type Cathode Material for Sodium-Ion Batteries DOI Open Access
Liang Zhou,

Mengyao Wang,

Hao Fan

и другие.

Materials, Год журнала: 2025, Номер 18(11), С. 2419 - 2419

Опубликована: Май 22, 2025

Natrium superionic conductor (NASICON) compounds have emerged as a rising star in the field of sodium-ion batteries (SIBs) owing to their stable framework structure and high Na+ ionic conductivity. The NASICON-structured Na2VTi(PO4)3 manifests significant potential storage material, characterized by decent rate capability cyclability. However, low redox Ti3+/Ti4+ undesirable energy density limit its practical applications. We developed Na3Co2/3V2/3Ti2/3(PO4)3 (NCTVP) cathode material doping an appropriate amount cobalt into Na2VTi(PO4)3. Cobalt introduces Co3+/Co2+ couple at ~4.1 V activates V5+/V4+ ~3.9 V, resulting significantly increased medium discharge voltage capacity. NCTVP demonstrates capacity over 160 mAh g−1 20 mA g−1. With ~2.7 reaches 432.0 Wh kg−1. also desirable cycling stability (87.4% retention for 100 cycles 50 g−1). In situ X-ray diffraction discloses solid solution reaction mechanism NCTVP, while galvanostatic intermittent titration technique fast diffusion kinetics. good cyclability full cells. This contribution effective approach construction NASICON materials SIBs.

Язык: Английский

Процитировано

0