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Use of an oxyhydroxy salt related to the family of lamellar double hydroxides for the design and manufacture of an electrode with a view to storing electrical energy

A technology of hydroxide and iron oxyhydroxide salt, which is applied in the manufacture of hybrid/electric double layer capacitors, iron oxide/iron hydroxide, nickel compounds, etc., and can solve problems such as huge energy performance and polluting waste

Active Publication Date: 2011-08-03
UNIVERSITY OF LORRAINE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, existing primary cells, batteries or accumulators often have disadvantages in terms of energy performance due to their weight or their bulkiness, as well as environmental problems, especially with regard to the polluting waste that needs to be guarded against during the recycling process

Method used

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  • Use of an oxyhydroxy salt related to the family of lamellar double hydroxides for the design and manufacture of an electrode with a view to storing electrical energy
  • Use of an oxyhydroxy salt related to the family of lamellar double hydroxides for the design and manufacture of an electrode with a view to storing electrical energy
  • Use of an oxyhydroxy salt related to the family of lamellar double hydroxides for the design and manufacture of an electrode with a view to storing electrical energy

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0201] Example 1: Mössbauer spectroscopy

[0202]Mössbauer reflectance spectroscopy using a MIMOS device was used to determine the oxidation state of iron in composites and films. MIMOS devices work by detecting the backscattered geometry of radiations réémises (14.4 keV for gamma rays and 6.4 keV for X-rays). MIMOS was also used to study iron compounds present on the soil of the planet Mars. (NASA and European Space Agency)

[0203] Mössbauer spectra were calibrated at ambient temperature with iron plates and adjusted with Lorentzian lines and single ferric quadrupole doublets.

Embodiment 2

[0204] Embodiment 2: the preparation of material

[0205] Preparation of stoichiometric ferrous-ferric hydroxycarbonates by chemical synthesis [Fe II 4 Fe III 2 (OH) 12 ] 2+ CO 3 2- GR (CO 3 2- ), where Fe(OH) 2 Oxidative preparation of precipitates in the presence of carbonate ions, or by Fe as described by Ruby et al. (2006, Geoscience) II and Fe III Co-precipitation preparation of ions in the presence of anions.

[0206] The ferrous-ferric hydroxycarbonate is then treated with an excess of a strong oxidizing agent such as H 2 o 2 (GR ＊ (1)) or dry in air (GR ＊ (2)) is completely deprotonated, as described by Génin et al. (2006, Geoscience), resulting in the formula [Fe III 6 o 12 h 8 ] 2+ CO 3 2- Ferric oxycarbonate (GR ＊ (1) or (2)).

[0207] The obtained products were characterized by X-ray diffraction, Mössbauer spectroscopy, vibrational spectroscopy (Raman or infrared) and transmission electron microscopy.

[0208] GR (CO 3 2- ) and GR ＊ The ...

Embodiment 3

[0218] Embodiment 3: the preparation of composite material

[0219] Hydroxyoxycarbonate (GR ＊ (1)) and carbon powder are mixed with paraffin or oil as a binder. In the case of paraffin, by mixing 250 mg carbon and 50 or 100 mg GR ＊ (1) A composite material was prepared, and then the mixture was heated in the presence of 100 mg of paraffin to bond the whole.

[0220] With 50 or 100mg GR ＊ (1) The Mössbauer spectrum of the obtained composite material ( Figure 6A with 6B ) and GR ＊ (1) quite.

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Abstract

The present invention relates to the use of an oxyhydroxy salt related to the family of lamellar double hydroxides for the design and manufacture of an electrode with a view to storing electrical energy.

Description

technical field [0001] The present invention relates to the use of oxyhydroxysels related to layered double hydroxides for the design and manufacture of electrodes for the storage of electrical energy. Background technique [0002] Ferrous-ferric oxyhydroxides are intermediate compounds related to the class of layered double hydroxides, which occur during the deterioration of ferrous materials (steel) and eventually transform into rust and are commonly called rust due to their color Patina (Génin et al., Geoscience 2006). [0003] For example, Ona Nguema et al. described in 2002 Enviro.Sci.Technol. 2 - ) and the presence of lepidocite iron oxyhydroxide γ-FeOOH as an electron acceptor, the formation of patina due to the dissimilatory iron-reducing bacteria Shewanellaputrefaciens. Bacterial activity lies in the Fe III ion reduction to Fe II , while oxidizing organic matter to carbonate CO 3 2- , which then enables the formation of so-called carbonated patina. This prod...

Claims

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Application Information

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IPC IPC(8): C01G49/00C01G49/02C01G51/00C01G53/00C09C1/42C01F7/00H01G11/30H01G11/48H01G11/50H01G11/86
CPCY02E60/12C01G49/0018H01M10/36H01G11/48C01G53/006H01G11/30Y02E60/13H01M4/52C01G51/006H01G11/50H01G11/86C01P2006/40C01P2002/22C09C1/42C01G49/009H01G9/058C01G49/02Y02E60/10Y10T428/24612
Inventor J-M·吉尼恩C·卢比
Owner UNIVERSITY OF LORRAINE
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