The nitrogen-doped carbon coated Na4MnV(PO4)3 as a high electrochemical performance cathode material for sodium-ion batteries

Wang, Yingshuai; Wang, Qianchen; Ding, Xiangyu; Wang, Meng; Xin, Yuhang; Gao, Hongcai

doi:10.1016/j.apsusc.2022.154218

Cited by 39 publications

(15 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[1][2][3] Since the cathode material is a key component determining the properties of SIBs, various structures have been investigated as cathodes, including layered transition metal oxides, analogues of Prussian blue, and polyanionic compounds. [4][5][6][7][8][9] Among these materials, layered transition metal oxides of sodium have been extensively investigated for their high energy density as cathode materials for SIBs. [10][11][12][13][14] The general formula of sodium layered oxide cathode materials is Na x TMO 2 (TM refers to transition metals), which was rst proposed in 1980.…”

Section: Introductionmentioning

confidence: 99%

Entropy modulation strategy of P2-type layered transition metal oxide cathodes for sodium-ion batteries with a high performance

Wang,

Xing

et al. 2023

J. Mater. Chem. A

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Entropy modulation strategy of P2-type layered transition metal oxide cathodes for sodium-ion batteries with a high performance

Wang,

Xing

et al. 2023

J. Mater. Chem. A

View full text Add to dashboard Cite

show abstract

“…For instance, various targeted strategies have been proposed to regulate the morphology of Li + deposition, such as regulation of the composition of electrolyte solvents, − modification of electrolytes with functional additives, , and optimization of Li salt concentrations. , These strategies are favorable for in situ formation of a stable SEI film on the lithium anode surface, and it could achieve uniform deposition of lithium ions and suppress growth of lithium dendrites in the initial cycle . Unfortunately, the mechanical properties of SEI layers formed in situ on the surface of lithium metal anodes are poor, which are unable to support their long cycle life and fail to change the damage/repair mechanism of SEI layers. , Therefore, many strategies have been proposed to improve the stability of SEI layers, including solid electrolyte films, organic polymer films, modified separators, − and carbon-based interlayers. − Solid electrolytes have a high mechanical stiffness and reasonable ionic conductivity, which can suppress the Li dendrite growth. However, their surface is prone to break in the process of Li plating/stripping, which limits their practical application .…”

Section: Introductionmentioning

confidence: 99%

Artificial Solid Electrolyte Interphase Engineering toward Dendrite-Free Lithium Anodes

Ding

Xin

Wang

et al. 2023

ACS Sustainable Chem. Eng.

Self Cite

View full text Add to dashboard Cite

As lithium (Li) metal has the highest specific capacity (3860 mAh g −1 ) and lowest anode potential (−3.04 V vs SHE), it is considered as the optimal choice of anode materials for new energy storage devices. However, the unstable Li plating/stripping behavior of the solid electrolyte interphase (SEI) on the Li anode surface triggers the common Li dendrite growth and side reactions between Li metal and electrolytes. The construction of an artificial SEI on the surface of lithium anodes is one of the effective approaches to improve the ionic conductivity, suppress the growth of lithium dendrite, and address the problem of low reversibility of lithium anodes. However, it remains a difficult problem to construct a uniform artificial SEI due to the lack of stability. Herein, an artificial Li 3 BO 3 SEI film is synthesized through a facile, environmentally friendly, and inexpensive in situ reaction between boric acid and anodes to address the difficult issues. The artificial Li 3 BO 3 protective layer exhibits a stable dendrite-free cycling behavior after 900 h at 1.0 mA cm −2 in the Li symmetrical cell. The Coulombic efficiency of the Li|LiFePO 4 batteries is close to 100% after 500 cycles, which is better than those of the unmodified bare samples. In addition, Li-Li 3 BO 3 also shows excellent electrochemical performance in lithium−sulfur (Li−S) batteries. These innovative findings provide new insights into the interfacial issues of Li metal anode protection and are expected to be a promising strategy for stable Li metal batteries.

show abstract

“…Nevertheless, the low electronic conductivity resulting from the insulating properties of the [PO 4 ] unit severely hinders its practical applications . Various modifications approaches, such as doping with different metal elements, − introducing conductive materials, − and designing micro-nano structures, − have been proposed to solve the problem.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen-Doped Carbon Coated Na₃V₂(PO₄)₂F₃ Derived from Polyvinylpyrrolidone as a High-Performance Cathode for Sodium-Ion Batteries

Wang

Xin

et al. 2023

ACS Appl. Energy Mater.

Self Cite

View full text Add to dashboard Cite

Na super ionic conductor (NASICON)-type Na 3 V 2 (PO 4 ) 2 F 3 (NVPF) has been regarded as a prospective candidate of cathode materials for sodium-ion batteries due to its excellent structural stability, relatively high capacity and working voltage. However, the poor cyclability and rate capability, resulting from its low intrinsic electronic conductivity, have become a serious obstacle to their practical large-scale application. In this work, N-doped carbon coated NVPF composites (NVPF@NC) were successfully synthesized via a simple sol−gel method, in which low-cost polyvinylpyrrolidone was introduced as a nitrogen source. After high-temperature pyrolysis, a highly conductive N-doped carbon layer was in-situ constructed on the particle surface to enhance the sodium storage performance of NVPF. The optimized NVPF@NC cathode delivered high reversible capacity, excellent rate capability and long-term cycle life compared to pristine NVPF@C. The remarkable electrochemical performance of NVPF@NC cathode benefits from the modification strategy of introducing a heteroatom-doped carbon layer, triggering the formation of extrinsic defects and active sites in the N-doped amorphous carbon layer, which greatly enhances the electrical conductivity and the diffusion rate of sodium ions. This work provides a facile and effective approach for the preparation of N-doped carbon coated NVPF with remarkable sodium storage properties, which could be extended to other electrode materials electrochemical for energy storage. KEYWORDS: sodium-ion batteries, Na 3 V 2 (PO 4 ) 2 F 3 , nitrogen-doped carbon, cathode material, electrochemical energy storage

show abstract

The nitrogen-doped carbon coated Na4MnV(PO4)3 as a high electrochemical performance cathode material for sodium-ion batteries

Cited by 39 publications

References 64 publications

Entropy modulation strategy of P2-type layered transition metal oxide cathodes for sodium-ion batteries with a high performance

Entropy modulation strategy of P2-type layered transition metal oxide cathodes for sodium-ion batteries with a high performance

Artificial Solid Electrolyte Interphase Engineering toward Dendrite-Free Lithium Anodes

Nitrogen-Doped Carbon Coated Na₃V₂(PO₄)₂F₃ Derived from Polyvinylpyrrolidone as a High-Performance Cathode for Sodium-Ion Batteries

Contact Info

Product

Resources

About

The nitrogen-doped carbon coated Na4MnV(PO4)3 as a high electrochemical performance cathode material for sodium-ion batteries

Cited by 39 publications

References 64 publications

Entropy modulation strategy of P2-type layered transition metal oxide cathodes for sodium-ion batteries with a high performance

Entropy modulation strategy of P2-type layered transition metal oxide cathodes for sodium-ion batteries with a high performance

Artificial Solid Electrolyte Interphase Engineering toward Dendrite-Free Lithium Anodes

Nitrogen-Doped Carbon Coated Na3V2(PO4)2F3 Derived from Polyvinylpyrrolidone as a High-Performance Cathode for Sodium-Ion Batteries

Contact Info

Product

Resources

About

Nitrogen-Doped Carbon Coated Na₃V₂(PO₄)₂F₃ Derived from Polyvinylpyrrolidone as a High-Performance Cathode for Sodium-Ion Batteries