Effect of binder materials on cycling performance of Fe2O3 electrodes in alkaline solution

Kitamura, Hiroki; Zhao, Liwei; Hang, Bui Thi; Okada, Shigeto; Yamaki, Jun Ichi

doi:10.1016/j.jpowsour.2012.02.051

Cited by 26 publications

(26 citation statements)

References 26 publications

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“…Some PVDF‐based copolymers including poly(vinylidene fluoride–tetrafluoroethylene–propylene) (PVDF–TFE) and poly(vinylidene fluoride‐ co ‐hexafluoropropylene (PVDF–HFP) have been shown to be more flexible alternatives owing to suppression of PVDF crystallization due to copolymerization leading to potential applications in silicon, tin, and metal oxide‐based anodes that though readily bonded by any of these materials, can exhibit as much as a 400% volume change during electrochemical cycling. Results from a recent study comparing the effectiveness of four binder materials (polytetraflouroethylene (PTFE), PVDF, polyethylene (PE) and P(TFE–VDF)) on electrochemical properties of Fe 2 O 3 electrodes indicated that while PTFE‐based electrodes showed best capacity retention, PE‐based electrodes exhibit the highest discharge capacity. This last result is not easily correlated with any of the physical or chemical characteristics of the four polymers.…”

Section: Nanocomposite Applications In Lithium Battery Electrodesmentioning

confidence: 99%

25th Anniversary Article: Polymer–Particle Composites: Phase Stability and Applications in Electrochemical Energy Storage

Srivastava

Schaefer

Yang³

et al. 2013

Advanced Materials

254

200

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Polymer-particle composites are used in virtually every field of technology. When the particles approach nanometer dimensions, large interfacial regions are created. In favorable situations, the spatial distribution of these interfaces can be controlled to create new hybrid materials with physical and transport properties inaccessible in their constituents or poorly prepared mixtures. This review surveys progress in the last decade in understanding phase behavior, structure, and properties of nanoparticle-polymer composites. The review takes a decidedly polymers perspective and explores how physical and chemical approaches may be employed to create hybrids with controlled distribution of particles. Applications are studied in two contexts of contemporary interest: battery electrolytes and electrodes. In the former, the role of dispersed and aggregated particles on ion-transport is considered. In the latter, the polymer is employed in such small quantities that it has been historically given titles such as binder and carbon precursor that underscore its perceived secondary role. Considering the myriad functions the binder plays in an electrode, it is surprising that highly filled composites have not received more attention. Opportunities in this and related areas are highlighted where recent advances in synthesis and polymer science are inspiring new approaches, and where newcomers to the field could make important contributions.

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Section: Nanocomposite Applications In Lithium Battery Electrodesmentioning

confidence: 99%

25th Anniversary Article: Polymer–Particle Composites: Phase Stability and Applications in Electrochemical Energy Storage

Srivastava

Schaefer

Yang³

et al. 2013

Advanced Materials

254

200

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“…Iron oxides like magnetite (Fe 3 O 4 ), maghemite (c-Fe 2 O 3 ), and hematite (a-Fe 2 O 3 ) have been extensively investigated because of its magnetic, optical, and catalytic properties, as well as its low cost. They have been used as catalyst, adsorbents for organic or inorganic polluents, 1,2 as electrodes in batteries, 3 and for bioapplications. 4 In particular, magnetic iron oxides show interesting responses to external magnetic fields, which are suitable for clinical diagnosis, medical therapy, 5 and magnetic separation.…”

Section: Introductionmentioning

confidence: 99%

Nanometric particle size and phase controlled synthesis and characterization of γ-Fe2O3 or (α + γ)-Fe2O3 by a modified sol-gel method

Silva

Oliveira

Ciciliati

et al. 2013

Journal of Applied Physics

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Fe 2 O 3 nanoparticles with sizes ranging from 15 to 53 nm were synthesized by a modified sol-gel method. Maghemite particles as well as particles with admixture of maghemite and hematite were obtained and characterized by XRD, FTIR, UV-Vis photoacoustic and M€ ossbauer spectroscopy, TEM, and magnetic measurements. The size and hematite/maghemite ratio of the nanoparticles were controlled by changing the Fe:PVA (poly (vinyl alcohol)) monomeric unit ratio used in the medium reaction (1:6, 1:12, 1:18, and 1:24). The average size of the nanoparticles decreases, and the maghemite content increases with increasing PVA amount until 1:18 ratio. The maghemite and hematite nanoparticles showed cubic and hexagonal morphology, respectively. Direct band gap energy were 1.77 and 1.91 eV for A6 and A18 samples. Zero-field-cooling-field-cooling curves show that samples present superparamagnetic behavior. Maghemite-hematite phase transition and hematite N eel transition were observed near 700 K and 1015 K, respectively. Magnetization of the particles increases consistently with the increase in the amount of PVA used in the synthesis. M€ ossbauer spectra were adjusted with a hematite sextet and maghemite distribution for A6, A12, and A24 and with maghemite distribution for A18, in agreement with XRD results. V

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“…22 Also here PEG (20 wt%) and PAANa promotes much severer capacity degradation, in particular during the first 10 cycles. Some amount of loaded Fe 3 O 4 might be exfoliated with coated polymer during these cycles.…”

Section: ¹1mentioning

confidence: 89%

Influence of Polymer Coating on the Electrode Properties of Fe<sub>3</sub>O<sub>4</sub>/Carbon Nano-fiber Composite in Alkaline Electrolyte

Egashira

2017

Electrochemistry

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A composite of nano-Fe 3 O 4 and carbon nanofiber (CNF), which has been investigated to maximize iron utilization, is adversely affected by shortcomings such as hydrogen evolution by-reactions, high overpotential, self-discharge, and capacity fade by cycles. Hydrogen evolution from the Fe 3 O 4 /CNF electrode can be inhibited by coating with a polymer such as poly(ethylene glycol). Although self-discharge is not high, even modified Fe 3 O 4 /CNF electrodes are hindered by overpotential and cycle degradation deriving from partial dissolution of divalent iron and its subsequent aggregation.

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Effect of binder materials on cycling performance of Fe2O3 electrodes in alkaline solution

Cited by 26 publications

References 26 publications

25th Anniversary Article: Polymer–Particle Composites: Phase Stability and Applications in Electrochemical Energy Storage

25th Anniversary Article: Polymer–Particle Composites: Phase Stability and Applications in Electrochemical Energy Storage

Nanometric particle size and phase controlled synthesis and characterization of γ-Fe2O3 or (α + γ)-Fe2O3 by a modified sol-gel method

Influence of Polymer Coating on the Electrode Properties of Fe<sub>3</sub>O<sub>4</sub>/Carbon Nano-fiber Composite in Alkaline Electrolyte

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