Poly(3‐methylthiophene): A Stable Cathode‐Active Material for Secondary Batteries

Nagatomo, Takao; Omoto, Osamu

doi:10.1149/1.2096227

Cited by 23 publications

(24 citation statements)

References 14 publications

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“…114 polymerised to structures sustaining a stable doping up to 0.38 (e − /MU), corresponding to almost 100 mAh/g in a lithium cell. 118 It was in fact demonstrated that a sharp conductivity maximum existed for films produced with a current density of 10 mA/cm, where a granular structure develops. This is the preferred structure for high performance of the films.…”

Section: Conducting Polymer Filmsmentioning

confidence: 99%

Nanomaterials for Lithium-ion Rechargeable Batteries

Liu¹,

Wang²,

Guo³

et al. 2006

j nanosci nanotechnol

118

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In lithium-ion batteries, nanocrystalline intermetallic alloys, nanosized composite materials, carbon nanotubes, and nanosized transition-metal oxides are all promising new anode materials, while nanosized LiCoO2, LiFePO4, LiMn2O4, and LiMn2O4 show higher capacity and better cycle life as cathode materials than their usual larger-particle equivalents. The addition of nanosized metal-oxide powders to polymer electrolyte improves the performance of the polymer electrolyte for all solid-state lithium rechargeable batteries. To meet the challenge of global warming, a new generation of lithium rechargeable batteries with excellent safety, reliability, and cycling life is needed, i.e., not only for applications in consumer electronics, but especially for clean energy storage and for use in hybrid electric vehicles and aerospace. Nanomaterials and nanotechnologies can lead to a new generation of lithium secondary batteries. The aim of this paper is to review the recent developments on nanomaterials and nanotechniques used for anode, cathode, and electrolyte materials, the impact of nanomaterials on the performance of lithium batteries, and the modes of action of the nanomaterials in lithium rechargeable batteries.

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Section: Conducting Polymer Filmsmentioning

confidence: 99%

Nanomaterials for Lithium-ion Rechargeable Batteries

Liu¹,

Wang²,

Guo³

et al. 2006

j nanosci nanotechnol

118

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“…Complexation of zinc was accounted for by utilizing a speciation analysis based on an ideal solution of hydrated halocomplexes according to Jacobsen and Skou (5,6). Complexation of zinc was accounted for by utilizing a speciation analysis based on an ideal solution of hydrated halocomplexes according to Jacobsen and Skou (5,6).…”

Section: Discussionmentioning

confidence: 99%

“…We used poly 3-methylthiophene (PMT), reportedly having an electrical conductivity in the range of 10 to 2 • 103 S cm -1 in the doped state (3)(4)(5). One alternative to carbon was to use electrically conducting polymers fabricated as extremely thin films with high surface area.…”

mentioning

confidence: 99%

Performance of Poly 3‐Methylthiophene Cathodes in Li / SO 2 Rechargeable Cells

Walker¹

1991

J. Electrochem. Soc.

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Electrochemically formed, conducting poly 3-methylthiophene was used as a rechargeable cathode material in lithium/sulfur dioxide_cells. Good capacity and very high volumetric energy density were obtained with thin (0.41-1.4 ~m thick) cathodes in Li(SO2)3A1C14 electrolyte. Recharge was achieved at potentials below 3.9 V, which should preclude the corrosive effects of formed chlorine.) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 134.129.120.3 Downloaded on 2015-05-25 to IP ABSTRACT Solution conductivities and transference numbers of concentrated ZnC1JKC1 solutions are estimated by describing ionic movement in a hypothetical Hittorf cell. Mass transfer is based on dilute solution assumptions as well as accounting for complexation and hydration of the ionic species. Such a simple representation of mass transport predicts solution conductivity and formal transference numbers of zinc in reasonable agreement with experimental data, including negative transference numbers indicative of the dominant effect of negatively charged zinc halocomplexes.) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 134.129.120.3 Downloaded on 2015-05-25 to IP

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“…8). (Aa/Ar [12] where A~ is the area of passive metal and ia(E) is the galvanic (anodic) current density on the passive metal (typically about 0.2 ~A/cm 2 on Ti). The first term in parenthesis is due to 'chemical degradation,' and the second term is the result of galvanic current between the polymer film and the passive metal.…”

Section: De/dt = (De/dq) (Dq/dt) = (De/dq) (-Kq 2)mentioning

confidence: 99%

“…The first term in parenthesis is due to 'chemical degradation,' and the second term is the result of galvanic current between the polymer film and the passive metal. [12] using experimentally measured i~(E) and compared to experimental data for a P(3-MT) film coupled to Ti electrodes of different siZe. [4] into Eq.…”

Section: De/dt = (De/dq) (Dq/dt) = (De/dq) (-Kq 2)mentioning

confidence: 99%

Stabilization of Metal‐Metal Oxide Surfaces Using Electroactive Polymer Films

Deng

Smyrl

White

1989

J. Electrochem. Soc.

104

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Charge coupling of the catalyzed reduction of 02 on platinized poly(3-methylthiophene) [P(3-MT)] films to the anodic dissolution of Ti is reported. Specifically, the redox polymer with Pt catalyst is used in these studies to mediate electrons generated by Ti dissolution and consumed by 02 reduction. Due to the large redox polymer capacity (>55 F/cm 2) of P(3-MT), these reactions occur at a stable potential approximately equal to the reversible oxidation potential of the polymer. Data presented support the conclusion that 02 reduction on the polymer film can replenish polymer charge consumed by metal dissolution, thereby stabilizing the potential of Ti within the passive potential range and minimizing the rate of metal dissolution. O2 reduction on P(3-MT)/Pt is sufficiently fast to poise the potential of Ti at 0.55V vs. SCE for pH 3.2 and for metal-to-polymer geometrical area ratios (ATi]ApMT) ~ 10. These results suggest possible applications of redox polymers as porous cathodes for metal stabilization.) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 138.38.0.53 Downloaded on 2015-06-11 to IP ABSTRACT Metals may be protected with highly resistive but electroactive overlayers. Through holes and defects on such surfaces, the exposed substrate may corrode, and the corrosion may be exacerbated by galvanic coupling with the surrounding (cathodic) overlayer. The modeling of a system with an overlayer of finite conductivity has not been attempted before, and we report here our results of current and potential distribution modeling as a function of the characteristic parameters of the system. The finite element method was used for the analysis. The cathodic galvanic current was found to flow mainly to areas at the periphery of holes and defects; total cathodic area was not important in determining galvanic current.) unless CC License in place (see abstract). ecsdl.org/site/terms_use address. Redistribution subject to ECS terms of use (see 138.38.0.53 Downloaded on 2015-06-11 to IP

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Poly(3‐methylthiophene): A Stable Cathode‐Active Material for Secondary Batteries

Cited by 23 publications

References 14 publications

Nanomaterials for Lithium-ion Rechargeable Batteries

Nanomaterials for Lithium-ion Rechargeable Batteries

Performance of Poly 3‐Methylthiophene Cathodes in Li / SO 2 Rechargeable Cells

Stabilization of Metal‐Metal Oxide Surfaces Using Electroactive Polymer Films

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