Self-restriction to form in-situ N,P co-doped carbon-coated LiFePO4 nanocomposites for high-performance lithium ion batteries

Lai, Anjie; Chu, Youqi; Jiang, Juantao; Huang, Youguo; Hu, Sun; Pan, Qichang; Zheng, Fenghua; Wang, Jun; Li, Jie; Wang, Hongqiang; Li, Qingyu

doi:10.1016/j.electacta.2022.140161

Cited by 26 publications

(9 citation statements)

References 53 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The XPS peaks of Ti 2p 3/2 and Ti 2p 1/2 spin-orbitals (Figure b) are located at 459.0 and 464.8 eV, respectively, in agreement with the Ti 4+ states of TiO 2 . The C 1s spectra (Figure c) consist of four components, which are ascribed to sp 2 C (284.8 eV), C–Mo (282.7 eV), C–N (286.0 eV), and C–P (288.4 eV) bonds. − The C–P bonds are also confirmed by the XPS peak of P 2p at 133.7 eV (Figure d). , The presence of C–P and C–N bonds suggests that the PPy-Mo-derived carbon is codoped with both nitrogen and phosphorus, which can create a great deal of defects and active sites to facilitate ion adsorption and transmission. The Mo 3d spectrum (Figure e) can be deconvoluted into six parts.…”

Section: Resultssupporting

confidence: 59%

Defect-Induced and Synergistic Na-Ion Storage Capability of TiO₂(B)@MoSe₂/Carbon Trinity for Ultrafast and Ultralong Cycling

Zhu

Shao

Jiang

et al. 2023

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

Currently, there remains a challenge to achieve an anode material with high capacity, ultrafast charge/discharge capability, and ultralong cycling life for sodium-ion batteries (SIBs). This work presents the designed synthesis of TiO 2 (B)@ MoSe 2 /carbon trinity with a defect-rich structure and synergistic Na + storage capability. In the ternary nanocomposites, TiO 2 (B) is doped with nitrogen (N-TiO 2 (B)), carbon is doped with both nitrogen and phosphorus (N,P-C), and few-layer and ultrasmall size MoSe 2 is strongly embedded into N,P-C via the Mo−N and Mo−C chemical bonds. Such a defect-rich structure not only provides abundant active sites for Na + storage but also facilitates the charge-transfer reactions at the interface of the heterogeneous phases. In addition, such a N-TiO 2 (B)@MoSe 2 /N,P-C trinity allows synergistic Na + storage capability, where MoSe 2 provides a high capacity, N,P-C accelerates the charge-transfer reactions and reduces the solid/electrolyte interphase resistance, and N-TiO 2 (B) works as an ultrastable skeleton for solidation/desodiation reactions. The as-prepared nanorod-like product manifests a high specific capacity of 568.5 mAh g −1 at 0.1C, ultrafast charge/ discharge capability, and ultralong cycling life (a capacity retention of 88.9% after 5000 cycles at 20C).

show abstract

Section: Resultssupporting

confidence: 59%

Defect-Induced and Synergistic Na-Ion Storage Capability of TiO₂(B)@MoSe₂/Carbon Trinity for Ultrafast and Ultralong Cycling

Zhu

Shao

Jiang

et al. 2023

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

show abstract

“…The Raman signal is shielded by the carbon coating in the LiFePO 4 /NC composites, and is not shielded in bare LFP. 17,27,28 In addition, all compounds showed strong signals at 1359 cm −1 and 1607 cm −1 , which is attributed to carbon in the D and G bands, respectively. The presence of these two peaks in the pure phase LFP may be ascribed to the residual oxalates and carbonates.…”

Section: Resultsmentioning

confidence: 96%

“…16 As a carbon source, expired beer was used to prepare the LFP cathode material, which provided a discharge capacity of 134 mA h g −1 at a multiplicity of 5C. 17 Zhu et al 18 developed a batch of LiFePO 4 composites with egg lecithin coating. The LiFePO 4 /NC composite cathode delivered a specific capacity of 164 mA h g −1 at 0.2C.…”

Section: Introductionmentioning

confidence: 99%

Facilely synthesized LiFePO₄nanocomposites with excellent electrochemical properties as cathodes for lithium ion batteries

Deng

et al. 2023

New J. Chem.

View full text Add to dashboard Cite

show abstract

“…This work has implications for the rational design of hollow nanostructures of sodium-ion batteries electrodes. Figure 8b shows that Liu Zhiyuan et al [154] proposed a strategy combining in situ activation and self-produced metal phosphide nanoparticles embedding hard carbon, using chitosan as nitrogenrich carbon source and phytic acid (PA) as three-functional reagent (cross-linking/chelating agent, phosphorus source and activator) to prepare nitrogen. Phosphorous co-doped CoP nanoparticles in hard carbon (CoP@NPHC) result in the high electrochemical storage capacity and fast electron transport capacity of CoP@NPHC.…”

Section: Types and Mechanisms Of Heteroatom Doping In Sodiumion Batte...mentioning

confidence: 99%

Research Progress and Modification Measures of Anode and Cathode Materials for Sodium‐Ion Batteries

Wang,

Tian,

Yao

et al. 2023

ChemElectroChem

View full text Add to dashboard Cite

Sodium‐ion batteries (SIBs) work similarly to lithium‐ion batteries, but they cost less and are safer. However, the battery has some shortcomings, such as low energy density and poor stability, which hinder its development and application. The development of electrode materials with low cost and high‐performance characteristics is a hot and difficult point in the research of SIBs. In this paper, the existing sodium ion cathode and anode materials are systematically reviewed. Firstly, the electrochemical structures and properties of various cathode and anode materials were introduced, and the limitations of cathode and anode materials of SIBs were analyzed. Based this, the current modification methods were summarized, such as surface coating of materials, doping of heteroatoms and metal elements to improve the electrochemical performance. In this paper, the research progress and modification measures of SIBs are summarized and prospected. It is helpful to further improve its comprehensive performance and lay a foundation for the future application of cathode and anode materials for SIBs.

show abstract

Self-restriction to form in-situ N,P co-doped carbon-coated LiFePO4 nanocomposites for high-performance lithium ion batteries

Cited by 26 publications

References 53 publications

Defect-Induced and Synergistic Na-Ion Storage Capability of TiO₂(B)@MoSe₂/Carbon Trinity for Ultrafast and Ultralong Cycling

Defect-Induced and Synergistic Na-Ion Storage Capability of TiO₂(B)@MoSe₂/Carbon Trinity for Ultrafast and Ultralong Cycling

Facilely synthesized LiFePO₄nanocomposites with excellent electrochemical properties as cathodes for lithium ion batteries

Research Progress and Modification Measures of Anode and Cathode Materials for Sodium‐Ion Batteries

Contact Info

Product

Resources

About

Self-restriction to form in-situ N,P co-doped carbon-coated LiFePO4 nanocomposites for high-performance lithium ion batteries

Cited by 26 publications

References 53 publications

Defect-Induced and Synergistic Na-Ion Storage Capability of TiO2(B)@MoSe2/Carbon Trinity for Ultrafast and Ultralong Cycling

Defect-Induced and Synergistic Na-Ion Storage Capability of TiO2(B)@MoSe2/Carbon Trinity for Ultrafast and Ultralong Cycling

Facilely synthesized LiFePO4nanocomposites with excellent electrochemical properties as cathodes for lithium ion batteries

Research Progress and Modification Measures of Anode and Cathode Materials for Sodium‐Ion Batteries

Contact Info

Product

Resources

About

Defect-Induced and Synergistic Na-Ion Storage Capability of TiO₂(B)@MoSe₂/Carbon Trinity for Ultrafast and Ultralong Cycling

Defect-Induced and Synergistic Na-Ion Storage Capability of TiO₂(B)@MoSe₂/Carbon Trinity for Ultrafast and Ultralong Cycling

Facilely synthesized LiFePO₄nanocomposites with excellent electrochemical properties as cathodes for lithium ion batteries