Remarkable enhancement in the electrochemical activity of maricite NaFePO4 on high-surface-area carbon cloth for sodium-ion batteries

Ma, Xudong; Xia, Jiuyang; Wu, Xuehang; Pan, Zhiyi; Shen, Pei Kang

doi:10.1016/j.carbon.2019.02.004

Cited by 66 publications

(35 citation statements)

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“…It is observed that, at low C-rates (C/10 and C/5), our synthesized t -NaFePO 4 delivers an initial capacity (132 mAhg –1 ) similar to those reported (117–141 mAh/g). However, when higher C-rates are applied (e.g., C/2–2C), our material demonstrates a clearly superior performance, e.g., 84 mAh/g at 2C (compared to the reported ones 39–54 mAh/g), which is among the best results obtained so far for C/NaFePO 4 . ,,,− It is also worth noting that our initial electrochemical studies on C/NFP shows higher capacity and better C-rate performance than O3–Na 0.9 [Cu 0.22 Fe 0.30 Mn 0.48 ]O 2 , which delivers ca. 100 mAh/g at C/10, and is currently being used in a proof-of-concept low speed electric car …”

Section: Resultsmentioning

confidence: 99%

Cost-Effective Synthesis of Triphylite-NaFePO₄ Cathode: A Zero-Waste Process

Berlanga

Monterrubio

Armand

et al. 2019

ACS Sustainable Chem. Eng.

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Triphylite-NaFePO4 attracts considerable attention as a cathode material for sodium-ion batteries due to its theoretical capacity (154 mAh/g), sharing also the excellent properties of the analogous triphylite-LiFePO4 used in commercial lithium-ion batteries. In this work, triphylite-NaFePO4 is synthesized from triphylite-LiFePO4 by a low-cost, eco-friendly method, enabling the recovery and subsequent reuse of lithium. NaFePO4 was evaluated as a cathode material in half-cells, exhibiting an initial discharge capacity of 132 mAh/g and good capacity retention (115 mAh/g and ∼100% of Coulombic efficiency after 50 cycles; 101 mAh/g and ∼100% of Coulombic efficiency after 200 cycles). This research confirms that the triphylite-NaFePO4 cathode material is an attractive candidate for sodium-ion batteries, with potential for future commercialization.

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Section: Resultsmentioning

confidence: 99%

Cost-Effective Synthesis of Triphylite-NaFePO₄ Cathode: A Zero-Waste Process

Berlanga

Monterrubio

Armand

et al. 2019

ACS Sustainable Chem. Eng.

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“…Following this observation, other optimization strategies were also applied to further improve the electrochemical performances of electrochemically induced amorphous NaFePO 4 , such as graphene modification, minimizing particle size and carbon cloth loading (Rahman et al, 2017;Liu et al, 2018;Ma et al, 2019). Combination of electrochemically induced amorphization with nanostructure design led to excellent electrochemical performances for various kinds of maricite NaFePO 4 -based nanocomposites.…”

Section: Amorphous Phase In Nafepo 4 -Based Cathodementioning

confidence: 99%

Role of Amorphous Phases in Enhancing Performances of Electrode Materials for Alkali Ion Batteries

2020

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As one of the most competitive energy storage systems owing to their high energy density, conversion efficiency, long lifetime, and environment friendliness, alkali ion batteries have been widely used and continue to exhibit their potential to be the crucial components of future energy technologies. To further improve electrochemical performances of alkali ion batteries, great efforts have been put into the development of advanced electrode materials. However, scientists are facing great challenges in developing superior electrode materials due to the limitation of the existing technologies. Therefore, we recently chose a different route, that is, the amorphization engineering, to develop high-performance electrodes. Here, we review some recent studies about the role of amorphous phases in promoting electrochemical performances of both cathodes and anodes for alkali ion batteries. In addition, we review some progress in revealing the microscopic mechanisms of the increased ionic/electronic transport as well as the enhanced structural stability in electrodes, achieved by amorphization engineering.

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“…[14][15][16] Therefore, many NaFePO 4 /CC electrodes have been designed, which display fascinating performances. [17] To overcome the leakage of liquid electrolyte, another research focus in flexible supercapacitors is drawn towards the development of solid state electrolyte, [18,19] and the polymeric electrolytes such as polyvinyl alcohol (PVA), polyethylene oxide (PEO)-polyethylene glycol (PEG), polymethyl methacrylate (PMMA)-ethylene carbonate (EC)-propylene carbonate (PC) etc. are commenly used.…”

Section: Introductionmentioning

confidence: 99%

“…As one promissing Na + containing material, NaFePO 4 has shown high voltage, [13] high stability and large theoretical capacity [14–16] . Therefore, many NaFePO 4 /CC electrodes have been designed, which display fascinating performances [17] …”

Section: Introductionmentioning

confidence: 99%

A Flexible Asymmetric NaFePO₄/Carbon Cloth Supercapacitor Using Crosslinked Polyacrylate Gel as Electrolyte

et al. 2021

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With the development of light-weight and bendable electric devices, nowdays, solid-state supercapacitive devices have attracted great attention, in which the classic polymeric electrolytes such as polyvinyl alcohol and polyethylene oxide copolymers are generally used. However, the microphase separation in these polymers and low conductivity affect the ions transfer and the energy-storage performance. In this work, a crosslinked sodium polyacrylate gel (NaPA) is synthesized to replace conventional polymeric electrolyte. Because NaPA is a kind of polymeric salt which has high native degree of ionization in water, the NaPA gel shows low resistance to ion transportation. By using NaPA gel as the electrolyte and carbon cloth as current collector, a flexible solid asymmetric super-capacitor assembled by positive NaFePO 4 /carbon cloth and negative activated carbon/carbon cloth electrode shows the maximum capacitance of 46.33 mF cm À 2 at 1 mA cm À 2 , with a high stability of 87.33 % retention during 5000 charge and discharge cycles. Moreover, this flexible asymmetric supercapacitors showed nearly unchanged capacitance under different bending angles. It is found that the Na + diffusion coefficient in NaFePO 4 /CC//NaPA supercapacitor is 8.05 × 10 À 14 cm 2 ⋅ s, remarkable higher than CC//NaPA and NaFePO 4 / CC//PVA. The high diffusion coefficient and low resistance of NaPA lead to excellent capacitave performance of NaFePO 4 / CC//NaPA, delivering a good application prospect.

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Remarkable enhancement in the electrochemical activity of maricite NaFePO4 on high-surface-area carbon cloth for sodium-ion batteries

Cited by 66 publications

References 50 publications

Cost-Effective Synthesis of Triphylite-NaFePO₄ Cathode: A Zero-Waste Process

Cost-Effective Synthesis of Triphylite-NaFePO₄ Cathode: A Zero-Waste Process

Role of Amorphous Phases in Enhancing Performances of Electrode Materials for Alkali Ion Batteries

A Flexible Asymmetric NaFePO₄/Carbon Cloth Supercapacitor Using Crosslinked Polyacrylate Gel as Electrolyte

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Remarkable enhancement in the electrochemical activity of maricite NaFePO4 on high-surface-area carbon cloth for sodium-ion batteries

Cited by 66 publications

References 50 publications

Cost-Effective Synthesis of Triphylite-NaFePO4 Cathode: A Zero-Waste Process

Cost-Effective Synthesis of Triphylite-NaFePO4 Cathode: A Zero-Waste Process

Role of Amorphous Phases in Enhancing Performances of Electrode Materials for Alkali Ion Batteries

A Flexible Asymmetric NaFePO4/Carbon Cloth Supercapacitor Using Crosslinked Polyacrylate Gel as Electrolyte

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Cost-Effective Synthesis of Triphylite-NaFePO₄ Cathode: A Zero-Waste Process

Cost-Effective Synthesis of Triphylite-NaFePO₄ Cathode: A Zero-Waste Process

A Flexible Asymmetric NaFePO₄/Carbon Cloth Supercapacitor Using Crosslinked Polyacrylate Gel as Electrolyte