Zr doping and carbon coating endow NaTi2(PO4)3 electrode with enhanced performances

He, Xinkuai; Zou, Qingtian; Wu, Luye

doi:10.1016/j.jallcom.2020.157836

Cited by 11 publications

(5 citation statements)

References 42 publications

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“…[44] Besides, the Zr doping enable to broaden the ion migration pathway, accelerate the Li + insertion/desorption, and improve the ion conductivity of (N, Co, Zr, P) tetra-doped PCS. [45] In Figure 5b, the partial DOS transits the Fermi energy levels, implying the metallic characteristic of (N, Co, Zr, P) tetra-doped PCS. As a result, the high electrical conductivity is expected.…”

Section: Resultsmentioning

confidence: 91%

“…The charge transfer between N and P accelerates the diffusion rate of Li + in (N, Co, Zr, P) tetra‐doped PCS, while the formation of C−P bond provide more active sites for the storage of Li + , which certainly promote the adsorption capacity of Li + [44] . Besides, the Zr doping enable to broaden the ion migration pathway, accelerate the Li + insertion/desorption, and improve the ion conductivity of (N, Co, Zr, P) tetra‐doped PCS [45] . In Figure 5b, the partial DOS transits the Fermi energy levels, implying the metallic characteristic of (N, Co, Zr, P) tetra‐doped PCS.…”

Section: Resultsmentioning

confidence: 99%

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Towards the Enhanced Lithium‐Ion Batteries by Designing (N, Co, Zr, P) Tetra‐Doped Porous Carbon Anode

Jin,

Zhang,

Feng

et al. 2023

ChemElectroChem

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Heteroatom‐doped porous carbons have stable structures, high electron/ion transport efficiencies, and rich electroactive sites, which are of great significance to energy storage devices. The potential synergistic effects arising from the multi‐element doping benefit to improve the electrochemical behavior of porous carbon. In this paper, a facile doping strategy has been proposed to prepare the (N, Co, Zr, P) tetra‐doped porous carbon spheres (PCS) for enhanced lithium‐ion batteries (LIBs). The metal‐organophosphine framework (MOPF) as precursor is synthesized by utilizing riboflavin sodium phosphate as organic ligand coordinating with cobalt and zirconium ions. Through carbonizing MOPF, the (N, Co, Zr, P) tetra‐doped PCS can be obtained. As the anode for LIBs, the (N, Co, Zr, P) tetra‐doped PCS exhibits highly reversible capacity of 761 mAh g−1 at 0.1 A g−1 after 100 cycles, excellent rate performance of 126 mAh g−1 even at a high current density of 2 A g−1. The results feature that the unique 3D structure and superior local electron transport properties of (N, Co, Zr, P) tetra‐doped PCS promote the Li+ diffusion and adsorption, which improve the electrochemical properties. Moreover, the mechanism analysis realizes that the Li+ storage of (N, Co, Zr, P) tetra‐doped PCS is determined by the capacitive behavior at high scan rate, highlighting the significance of the heteroatom doping. Therefore, the (N, Co, Zr, P) tetra‐doped PCS should be considered as prominent candidate for high‐performance LIBs anodes.

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Section: Resultsmentioning

confidence: 91%

Section: Resultsmentioning

confidence: 99%

Towards the Enhanced Lithium‐Ion Batteries by Designing (N, Co, Zr, P) Tetra‐Doped Porous Carbon Anode

Jin,

Zhang,

Feng

et al. 2023

ChemElectroChem

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“…Currently, transition metal doping, such as Nb, Zr, Fe, Sn, Mn, etc. have been successfully explored to improve the electrochemical performance of NTP [31][32][33][34][35]. VORONINA et al…”

Section: Introductionmentioning

confidence: 99%

“…HE et al . prepared NaTi2-xZrx(PO4)3/C by sol-gel method, and assembled an aqueous lithium-ion battery using NaTi1.9Zr0.1(PO4)3/C as anodes and LiMn2O4 as the cathode, which provided a discharge capacity of 112.5 mAh•g -1 at 0.2C with 41 mAh•g -1 higher than that of the pristine samples [32].…”

Section: Introductionmentioning

confidence: 99%

Dual strategy of La3+ doping and carbon coating enhancing the rate performance of NaTi2(PO4)3 anode materials

Liu,

Li,

Zhong

et al. 2024

Ionics

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NaTi2(PO4)3 (NTP) is considered a promising anode material for sodium-ion batteries due to its open and stable framework structure. However, its poor conductivity prevents its direct application as an anode material. In this paper, a dual strategy of La 3+ doping and carbon coating is proposed to improve the conductivity of NTP. The results show that the NTP-La0.06@C electrode doped with 6% La has excellent electrochemical performance, and the coulombic efficiency is up to 95.31% in the first cycle. The initial specific capacity is 103.05 mAh•g -1 with a capacity retention of 97.30% after 1000 cycles at 10C rate.Even after 2000 cycles, there is still a specific capacity of 98.62 mAh•g -1 with a capacity retention of 92.71%, and as well as the NTP-La0.06@C has a higher Na + -insert diffusion coefficient of 3.19×10 -11 cm 2 •s -1 than the pristine NTP@C of 2.35×10 -11 cm 2 •s -1 during charging. Therefore, the La 3+ doping and carbon coating strategy shows great potential in improving the performance of NaTi2(PO4)3 anode materials.

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“…For instance, simultaneous theoretical calculated and experimental confirmation of better electronic conductivity of NTPF was achieved after F doping. [ 35 ] By substituting Ti atoms, Na 2 Ti 3/2 Mn 1/2 (PO 4 ) 3 , [ 36 ] Na 3 MnTi(PO 4 ) 3 , [ 37 ] Na 3 MgTi(PO 4 ) 3 , [ 38 ] Na 2 VTi(PO 4 ) 3 , [ 39 ] and NaTi 1.9 Zr 0.1 (PO 4 ) 3 [ 40 ] were found to be capable of inhibiting the dissolution of active materials in aqueous electrolytes to improve cycling performance.…”

Section: Introductionmentioning

confidence: 99%

A High Rate and Long Cycling Performance NaTi₂(PO₄)₃ Core–Shell Porous Nanosphere Anode for Aqueous Sodium‐Ion Batteries

Zhao

et al. 2022

Energy Tech

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NASICON-type material NaTi 2 (PO 4 ) 3 has a suitable working potential (À0.87 V vs saturated calomel electrode) in aqueous sodium-ion cells. Nevertheless, the inherent electronic conductivity in the internal core and external shell limits its rate and cycling performance. Herein, a carbon-coated porous nanosphere NaTi 2 (PO 4 ) 3 material is synthesized by the solvothermal method. This structure effectively improves the electrical conductivity, enlarges the contact area with the electrolyte, and facilitates the rapid intercalation/deintercalation of Na þ . It delivers an excellent rate behavior of 123.59, 113.55, 102.81, 90.85, and 60.95 mAh g À1 at 0.2, 0.5, 1, 2, and 5 A g À1 , respectively. Improved long cyclability under a 5 A g À1 high current density is also demonstrated by a capacity retention of 70.2% over 500 cycles and an average Coulombic efficiency of 98%. As-prepared core-shell porous nanosphere NaTi 2 (PO 4 ) 3 exhibits potentially practical applications in a new type of aqueous sodium-ion battery system.

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Zr doping and carbon coating endow NaTi2(PO4)3 electrode with enhanced performances

Cited by 11 publications

References 42 publications

Towards the Enhanced Lithium‐Ion Batteries by Designing (N, Co, Zr, P) Tetra‐Doped Porous Carbon Anode

Towards the Enhanced Lithium‐Ion Batteries by Designing (N, Co, Zr, P) Tetra‐Doped Porous Carbon Anode

Dual strategy of La3+ doping and carbon coating enhancing the rate performance of NaTi2(PO4)3 anode materials

A High Rate and Long Cycling Performance NaTi₂(PO₄)₃ Core–Shell Porous Nanosphere Anode for Aqueous Sodium‐Ion Batteries

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Zr doping and carbon coating endow NaTi2(PO4)3 electrode with enhanced performances

Cited by 11 publications

References 42 publications

Towards the Enhanced Lithium‐Ion Batteries by Designing (N, Co, Zr, P) Tetra‐Doped Porous Carbon Anode

Towards the Enhanced Lithium‐Ion Batteries by Designing (N, Co, Zr, P) Tetra‐Doped Porous Carbon Anode

Dual strategy of La3+ doping and carbon coating enhancing the rate performance of NaTi2(PO4)3 anode materials

A High Rate and Long Cycling Performance NaTi2(PO4)3 Core–Shell Porous Nanosphere Anode for Aqueous Sodium‐Ion Batteries

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A High Rate and Long Cycling Performance NaTi₂(PO₄)₃ Core–Shell Porous Nanosphere Anode for Aqueous Sodium‐Ion Batteries