Integrated FeOOH nanospindles with conductive polymer layer for high-performance supercapacitors

Wei, Guijuan; Du, Kun; Zhao, Xixia; Li, Chuang; Li, Jinquan; Ren, Kaikai; Huang, Yiwen; Wang, Hui; Yao, Shuang; An, Changhua

doi:10.1016/j.jallcom.2017.09.002

Cited by 33 publications

(16 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A sharp peak of the FeOOH vibrational band was found at 691 cm −1 as shown in Figure 5(b). is observation is in concordance with the research reported by Wei et al [37]. Fe-O vibrational modes in FeOOH were ascribed at 1640, 1363, and 1141 cm −1 in the PFFs spectra while there were no peaks in 4…”

Section: Fourier Transform Infrared Spectroscopy Of Polypyrrole-iron Oxyhydroxidesupporting

confidence: 93%

Preparation and Characterisation of Polypyrrole‐Iron Oxyhydroxide Nanocomposite as Sensing Material

Diauudin

Noor

Rashid

et al. 2020

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

Polypyrrole (PPy) has been widely used as a sensing material in many studies as PPy gives out noticeable reactions towards varieties of vapours of acids, bases, alcohols, alkanes, and chemical warfare agent (CWA) simulants. However, due to dispersion and mechanical properties limitation, PPy in nanoparticles (PPy NPs) has been introduced. The combinations between PPy NPs and nanosized metal oxide have shown promising improvement in the sensitivity of a sensor due to the larger total surface area of detection. In this study, the potential of PPy NPs and polypyrrole-iron oxyhydroxide (PFFs) nanocomposite as sensing materials in detecting the CWA simulant, dimethyl methylphosphonate (DMMP), is investigated. PPy NPs and modified PFFs nanocomposite were successfully synthesised using chemical oxidative polymerisation. The formation of PPy NPs and the effect of iron-oxyhydroxide (FeOOH) on the chemical interaction, morphology, and size of PPy NPs were investigated using attenuated total reflection-Fourier transform infrared (ATR-FTIR), field emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM). ATR-FTIR analysis showed that the modified PFFs nanocomposite was successfully produced through the presence of a sharp –OH peak. The size of the prepared PPy NPs and PFFs nanocomposite was observed in the range of 50 to 70 nm and 110 to 160 nm, respectively, through TEM analysis. The electrochemical behaviour of PPy NPs and PFFs nanocomposite towards DMMP was investigated using cyclic voltammetry (CV) where, in the presence of DMMP, PPy NPs and PFFs nanocomposite showed 24% and 21% current signal reduction, respectively. This suggests that both PPy NPs and PFFs nanocomposite are able to discriminate an electrical signal both with and without the presence of DMMP.

show abstract

Section: Fourier Transform Infrared Spectroscopy Of Polypyrrole-iron Oxyhydroxidesupporting

confidence: 93%

Preparation and Characterisation of Polypyrrole‐Iron Oxyhydroxide Nanocomposite as Sensing Material

Diauudin

Noor

Rashid

et al. 2020

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

show abstract

“…However, the current densities of the MWCNTs electrode are much lower than those of the pseudocapacitive material electrodes, limiting the rate capability for supercapacitors. Surprisingly, the current densities are greatly increased when FeOOH NFs are introduced into MWCNTs, and the FeOOH NFs@MWCNTs composite electrodes exhibit quasi-rectangular CV curves, which is characteristic of the pseudocapacitive behavior Figure b shows the specific capacitances with scan rates of FeOOH NFs@MWCNTs samples.…”

Section: Resultsmentioning

confidence: 99%

“…Surprisingly, the current densities are greatly increased when FeOOH NFs are introduced into MWCNTs, and the FeOOH NFs@MWCNTs composite electrodes exhibit quasi-rectangular CV curves, which is characteristic of the pseudocapacitive behavior. 31 Figure 4b shows the specific capacitances with scan rates of FeOOH NFs@MWCNTs samples. The specific capacitance of the sample greatly When the content of FeOOH NFs increases, the specific capacitance of the electrode increases until a peak value of about 266 F g −1 is achieved at 10 mV s −1 for 1FeOOH NFs@ 1MWCNTs.…”

Section: Resultsmentioning

confidence: 99%

Low-Crystalline FeOOH Nanoflower Assembled Mesoporous Film Anchored on MWCNTs for High-Performance Supercapacitor Electrodes

et al. 2020

View full text Add to dashboard Cite

Crystalline iron oxides/hydroxides are generally preferred as supercapacitor electrode materials instead of the low-crystalline structure, despite the fact that an amorphous phase could have a comprehensive electrochemical performance owing to its structural disorder. Herein, we present a facile and scalable method for preparing amorphous FeOOH nanoflowers@multi-walled carbon nanotubes (FeOOH NFs@ MWCNTs) composites. The resulting hybrid nanoflowers hold a distinctive heterostructure composed of a self-assembled amorphous FeOOH nanofilm on the MWCNTs surface. The low-crystalline 1FeOOH NFs@1MWCNTs composites at pH 8 exhibit a high comprehensive capacitive performance, which may be attributed to the advantageous structural features. In a −0.85 to 0 V vs Ag/AgCl potential window, the prepared hybrid electrode delivers a high specific capacitance of 345 F g −1 at a current density of 1 A g −1 , good cycling stability (76.4% capacity retention over 5000 consecutive cycles), and outstanding rate performance (167 F g −1 at 11.4 A g −1 ). This work may trigger the possibilities of these nanomaterials for further application in supercapacitor electrodes, specifically low-crystalline oxide/ hydroxide-based electrode materials.

show abstract

“…Traditionally, Co x Fe 1‐ x OOH/CC was synthesized by a hydrothermal method. Some revises have been made according to the previous work . In a typical process of synthesis, different mole ratios of Co/Fe solution (1 : 0, 1 : 5, 1 : 2, 1 : 1, 3 : 1, 7 : 1, 0 : 1 for the synthesis of CoOOH/CC, Co 0.17 Fe 0.83 OOH/CC, Co 0.33 Fe 0.67 OOH/CC, Co 0.5 Fe 0.5 OOH/CC, Co 0.75 Fe 0.25 OOH/CC, Co 0.875 Fe 0.125 OOH/CC and FeOOH/CC, respectively) were successfully synthesized by mixing CoSO 4 ⋅ 7H 2 O and FeCl 3 ⋅ 6H 2 O into 30 mL H 2 O, while the total amount of metal cations (Co 2+ and Fe 3+ ) was limited to 3 mmol.…”

Section: Methodsmentioning

confidence: 99%

One‐Step Synthesis of a Coral‐Like Cobalt Iron Oxyhydroxide Porous Nanoarray: An Efficient Catalyst for Oxygen Evolution Reactions

Zhang

Song

et al. 2019

ChemPlusChem

View full text Add to dashboard Cite

The design of high‐efficiency and cost‐effective electrocatalysts is one of the most crucial factors for facilitating the oxygen evolution reaction (OER). Therefore, we prepared CoxFe1‐xOOH with coral‐like nanonet arrays on carbon cloth (CC) as high‐performance OER catalysts by a facile hydrothermal method. The resulting CoxFe1‐xOOH was characterized by X‐ray diffraction, scanning electron microscopy, transmission electron microscopy, and X‐ray photoelectron spectrometry. When serving as a catalyst electrode in the OER, Co0.875Fe0.125OOH/CC exhibits excellent catalytic activity. Co0.875Fe0.125OOH/CC has a low overpotential of 300 mV at a current density of 20 mA cm−2 (150 mV less than that of FeOOH/CC) and a small Tafel slope of 83 mV dec−1 in 1.0 M KOH in OER. Moreover, it also has a superior electrochemical durability for more than 50 h.

show abstract

Integrated FeOOH nanospindles with conductive polymer layer for high-performance supercapacitors

Cited by 33 publications

References 42 publications

Preparation and Characterisation of Polypyrrole‐Iron Oxyhydroxide Nanocomposite as Sensing Material

Preparation and Characterisation of Polypyrrole‐Iron Oxyhydroxide Nanocomposite as Sensing Material

Low-Crystalline FeOOH Nanoflower Assembled Mesoporous Film Anchored on MWCNTs for High-Performance Supercapacitor Electrodes

One‐Step Synthesis of a Coral‐Like Cobalt Iron Oxyhydroxide Porous Nanoarray: An Efficient Catalyst for Oxygen Evolution Reactions

Contact Info

Product

Resources

About