Electrocapacitive Properties of MnFe2O4 Electrodes in Aqueous LiNO3 Electrolyte with Surfactants

Wang, Baoyan; Guo, Peizhi; Bi, Huaqing; Li, Qun; Zhang, Guoliang; Wang, Rongyue; Liu, Jingquan; Zhao, Xihui

doi:10.1016/s1452-3981(23)12942-7

Cited by 31 publications

(1 citation statement)

References 33 publications

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“…Wang et al have examined the influence of SDS, Triton X-100 and P123 (poly(ethylene glycol)-block-poly (propylene glycol)-block-poly(ethylene glycol)) added at 5 mM concentration to an aqueous electrolyte solution of 2 M LiNO 3 on the properties of manganese ferrite MnFe 2 O 4 suggested as supercapacitor electrode material [89]. The highest capacitance increase of 36.8% was found with SDS.…”

Section: With Redox-active Supercapacitor Electrode Materialsmentioning

confidence: 99%

Surfactants as Performance-Enhancing Additives in Supercapacitor Electrolyte Solutions—An Overview

Chen,

Holze

2023

Batteries

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Wetting the surface area of an electrode material as completely as possible is desirable to achieve optimum specific capacity of an electrode material. Keeping this surface area utilized even at high current densities and even when inside pores is required for high capacitance retention. The addition of surfactants at very small concentrations to aqueous supercapacitor electrolyte solutions has been suggested as a way to improve performance in terms of capacitance, capacitance retention at increased current density and stability. Effects are pronounced with carbon materials used in electrochemical double-layer capacitors; they are also observed with redox materials. The causes of the observed improvements and mode of operation of the added surfactants seem to need further investigation; they are inconclusive beyond the obvious statement of increased wetting. Reported examples and the current state of understanding are reviewed.

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Section: With Redox-active Supercapacitor Electrode Materialsmentioning

confidence: 99%

Surfactants as Performance-Enhancing Additives in Supercapacitor Electrolyte Solutions—An Overview

Chen,

Holze

2023

Batteries

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Nanocrystalline Manganese Iron Oxide as a Charge Storage Electrode

Soni

Pal

2016

Electroanalysis

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Energy is one of the main issues in this century. The demand of energy for usage of modern electronic accessories has attracted lot of attention towards energy storage devices such as batteries and supercapacitors. Supercapacitors have the greater potential for providing good cyclability, high power density and energy density as compared with the batteries [1][2][3]. The synthesis of advanced electrode materials for charge storage is the key issue in the development of supercapacitors. It has been found that pseudocapacitors are more efficient than electric double layer capacitors (EDLCs) and exhibit 10 times more capacitance-per-unit surface area for a given electrode material [4]. The energy density and power density of pseudocapacitors are usually several times larger than those of EDLCs [5]. RuO 2 was the first candidate that was employed as a pseudocapacitor which exhibited a capacitance of about 700 F g À1 , however showed limited application due to its scarcity and high cost [6]. Recently, the approach of combining battery electrode materials and electrochemical supercapacitors known as hybrid electrochemical supercapacitors (HESC) is being studied. They have been studied both in aqueous and non-aqueous electrolytes. Advantage of non-aqueous medium being a wide operating potential window (upto~4 V) as compared to aqueous (~1 V) [7]. [43] have been studied for supercapacitor and HESC. Different methodologies for synthesizing binary oxide of distinct morphologies have been reported [33][34][35][36][37][38][39][40][41][42][43]. Morphology affects the chemical, physical and electrochemical properties of the material. Solution combustion synthesis has the advantage of producing fine and homogeneous powder of high purity in a single step self propagating process at low temperature with high exothermicity [44][45][46][47]. Citric acid is used as fuel as it is inexpensive and is a more effective complexing agent. It is often accompanied with the addition of certain amounts of NH 4 OH which help to overcome drying stresses and contribute to the porosity and strength of the solÀgel network [44]. In this present study manganese iron oxide Abstract: Phase pure nanocrystalline manganese iron oxide [(Mn 0.37 Fe 0.63 ) 2 O 3 ] was synthesized by combustion technique based on propellant chemistry principle employing citric acid as fuel. The synthesized powder was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), BET, BJH analysis and electrochemical studies for possible application as a charge storage electrode. The average crystallite size was found to be 18.6 nm from XRD analysis. BET analysis yielded the surface area and specific pore volume of the powder to be 22.96 m 2 g À1 and 0.0098 cm 3 g À1 respectively. The specific capacitance from cyclic voltammetric studies at scan rate 5 mV s À1 was found to be about 30 F g À1 cm À2 while from charge discharge studies was found to be 27 AE 1 Fg À1 cm À2. In addition, the material showed appreciable stability during charge-discharge cycling.

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Ferrite Nanoparticles for Energy Storage Applications

Manori

Shukla

2023

Materials Horizons: From Nature to Nanomaterials

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Electrocapacitive Properties of MnFe2O4 Electrodes in Aqueous LiNO3 Electrolyte with Surfactants

Cited by 31 publications

References 33 publications

Surfactants as Performance-Enhancing Additives in Supercapacitor Electrolyte Solutions—An Overview

Surfactants as Performance-Enhancing Additives in Supercapacitor Electrolyte Solutions—An Overview

Nanocrystalline Manganese Iron Oxide as a Charge Storage Electrode

Ferrite Nanoparticles for Energy Storage Applications

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