Micro/nano-structured Ag coated VPO4/C as a high-performance anode material for lithium-ion batteries

Hu, Lizhen; Zheng, Shuai; Cheng, Siqi; Chen, Zhuo; Huang, Bin; Liu, Qingquan; Chen, Quanqi

doi:10.1016/j.matlet.2019.03.022

Cited by 17 publications

(18 citation statements)

References 12 publications

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“…The acquired results shown in Figure c,d indicate that the present NVPOF/C composite exhibits enhanced rate performances at high current densities compared with previous reports. ,,,, In specific, the NVPOF/C electrode delivers 128.5, 118, and 85 mAh g –1 at 1, 10, and 50 C, respectively. The remarkable performance of the NVPOF/C electrode at high current densities can be associated with the existence of nanosized NVPOF particles coated and connected with highly conducting carbon material. − A mesoporous carbon-containing Na 3 V 2 (PO 4 ) 2 O 2 x F 3–2 x /C was reported to deliver 75 mAh g –1 at 5 C, with conductive network around the active materials . Similarly, a Na 3 (VO 1– x PO 4 ) 2 F 1+2 x sample synthesized using one-step solvothermal route at low temperatures indicated a discharge capacity of 120 mAh g –1 at 0.2C .…”

Section: Resultsmentioning

confidence: 99%

Uniform Carbon Coated Na₃V₂(PO₄)₂O_2xF_3–2x Nanoparticles for Sodium Ion Batteries as Cathode

Song

Park

Kim

et al. 2019

ACS Sustainable Chem. Eng.

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A uniform carbon-coated Na 3 V 2 (PO 4 ) 2 O 2x F 3−2x (NVPOF/C) nanoparticle synthesized by a novel pyro synthesis method is utilized for sodium-ion batteries (SIBs) as a cathode. Remarkably, the electrochemical properties are performed at high rates show significantly improved discharge capacity. At 0.1 C, the NVPOF/C cathode shows a discharge capacity of 130 mAh g −1 , corresponding to 100% of the theoretical capacity. Even at 50 C, a discharge capacity of ∼85 mAh g −1 could be attained. The in situ X-ray diffraction and ex-situ synchrotron X-ray absorption near edge structure spectroscopy results exposed that the reversible sodium ion insertion/ extraction into/from NVPOF/C host structure occurs with a small volume change (3.4%), indicating the structural stability of the cathode. Our study validates that the Na 3 V 2 (PO 4 ) 2 O 2x F 3−2x /C electrode is a promising candidate for developing high power/ energy density cathodes for SIBs.

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Section: Resultsmentioning

confidence: 99%

Uniform Carbon Coated Na₃V₂(PO₄)₂O_2xF_3–2x Nanoparticles for Sodium Ion Batteries as Cathode

Song

Park

Kim

et al. 2019

ACS Sustainable Chem. Eng.

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“…VPO 4 has been synthesized through numerous methods, such as sol‐gel, [23,24,35] freeze‐drying assisted annealing [25] and hydrothermal methods [26–36] . Vanadium is highly chemically active, and its oxidation levels assume a value from 0 to +5.…”

Section: Introductionmentioning

confidence: 99%

“…where M = Li, Na and K. VPO 4 has been synthesized through numerous methods, such as sol-gel, [23,24,35] freeze-drying assisted annealing [25] and hydrothermal methods. [26][27][28][29][30][31][32][33][34][35][36] Vanadium is highly chemically active, and its oxidation levels assume a value from 0 to + 5. VPO 4 has an orthorhombic structure composed of VO 6 octahedrons and PO 4 tetrahedrons.…”

Section: Introductionmentioning

confidence: 99%

“…Unfortunately, VPO 4 has poor electrical conductivity, which results in reduced electrochemical efficiency. [23][24][25][26][27][28][29][30][31][32][33][34][35][36] Furthermore, the conversion of sodium with VPO 4 may cause electrode pulverization and the formation of unstable solid electrolyte interphase (SEI) films. [33][34][35]37] Therefore, rapid capacity fading is achieved.…”

Section: Introductionmentioning

confidence: 99%

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Amorphous and Crystalline Vanadium Orthophosphate and Oxidized Multiwalled Carbon Nanotube Composites as Anode Materials in Sodium‐Ion Batteries

et al. 2022

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Vanadium orthophosphate and oxidized multiwalled carbon nanotube (ox‐MWCNT) composites were applied as anodic electroactive materials in a sodium‐ion battery. Carbon nanotubes reduce the resistance of anodic materials, prevent drastic volume expansion, and allow easy transport of electrolyte ions, leading to an improvement in the electrochemical performance of electroactive materials. Theoretical modeling of the VPO4 /ox‐CNT interphase indicates the conducting properties of the crystalline c‐VPO4 /ox‐MWCNT composite and the significant contribution of CNTs in the charge transfer process. As anodes in sodium‐ion batteries, crystalline VPO4 (c‐VPO4 ) and amorphous VPO4 (a‐VPO4 ) exhibited initial discharge capacities of 125 mAh g−1 and 110 mAh g−1, respectively. The incorporation of vanadium phosphate into the network of ox‐MWCNTs results in a large increase in the capacity performance of electroactive materials. Discharge capacities of 1642 mAh g−1 and 1680 mAh g−1 were obtained for the first cycle in the case of the c‐VPO4 /ox‐MWCNT 50 % w/w and a‐VPO4/ox‐MWCNT 50 % w/w anodes, respectively. The capacity of these composite materials significantly decreases in the second cycle, reaching a stable capacity performance. The limiting capacity was 328 mAh g−1 for composites containing 50 % w/w ox‐MWCNTs.

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“…To reduce the environmental burden arising from usage of fossil fuels, it is essential to develop energy storage systems (ESSs) for efficient storage of the electricity generated by power plants and renewable-energy generation systems. − The merits of Li-ion batteries (LIBs), such as high energy density, acceptable power capability, and stable cycle life, make them particularly attractive ESS candidates for various power sources. − However, the recent explosive growth of LIBs has contributed to the fluctuating prices of lithium resources, which have in turn increased the production cost of LIBs. − …”

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confidence: 99%

The Conversion Chemistry for High-Energy Cathodes of Rechargeable Sodium Batteries

Lee

Yoo

et al. 2019

ACS Nano

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Herein, the Cu 2 P 2 O 7 /carbon−nanotube nanocomposite is reported as a cathode material based on a conversion reaction for rechargeable sodium batteries (RSBs). The nanocomposite electrode exhibits the large capacity of 355 mAh g −1 , which is consistent with the 4 mol Na + storage per formula unit determined by first-principles calculation. Its average operation voltage is approximately 2.4 V (vs Na + /Na). Even at 1800 mA g −1 , a capacity of 223 mAh g −1 is maintained. Moreover, the composite electrode exhibits acceptable capacity retention of over 75% of the initial capacity for 300 cycles at 360 mA g −1 . The overall conversion reaction mechanism on the Cu 2 P 2 O 7 /carbon−nanotube nanocomposite is determined to be Cu 2 P 2 O 7 + 4Na + + 4e − → 2Cu + Na 4 P 2 O 7 based on operando/ex situ structural and physicochemical analyses. The high energy density of the Cu 2 P 2 O 7 /carbon−nanotube nanocomposite (720 Wh kg −1 ) supported by this conversion chemistry indicates a high possibility of application of this material as a promising cathode candidate for RSBs.

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Micro/nano-structured Ag coated VPO4/C as a high-performance anode material for lithium-ion batteries

Cited by 17 publications

References 12 publications

Uniform Carbon Coated Na₃V₂(PO₄)₂O_2xF_3–2x Nanoparticles for Sodium Ion Batteries as Cathode

Uniform Carbon Coated Na₃V₂(PO₄)₂O_2xF_3–2x Nanoparticles for Sodium Ion Batteries as Cathode

Amorphous and Crystalline Vanadium Orthophosphate and Oxidized Multiwalled Carbon Nanotube Composites as Anode Materials in Sodium‐Ion Batteries

The Conversion Chemistry for High-Energy Cathodes of Rechargeable Sodium Batteries

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Micro/nano-structured Ag coated VPO4/C as a high-performance anode material for lithium-ion batteries

Cited by 17 publications

References 12 publications

Uniform Carbon Coated Na3V2(PO4)2O2xF3–2x Nanoparticles for Sodium Ion Batteries as Cathode

Uniform Carbon Coated Na3V2(PO4)2O2xF3–2x Nanoparticles for Sodium Ion Batteries as Cathode

Amorphous and Crystalline Vanadium Orthophosphate and Oxidized Multiwalled Carbon Nanotube Composites as Anode Materials in Sodium‐Ion Batteries

The Conversion Chemistry for High-Energy Cathodes of Rechargeable Sodium Batteries

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Uniform Carbon Coated Na₃V₂(PO₄)₂O_2xF_3–2x Nanoparticles for Sodium Ion Batteries as Cathode

Uniform Carbon Coated Na₃V₂(PO₄)₂O_2xF_3–2x Nanoparticles for Sodium Ion Batteries as Cathode