EP2095458A1 - Source d'énergie électrochimique et dispositif électronique doté de cette source d'énergie électrochimique - Google Patents

Source d'énergie électrochimique et dispositif électronique doté de cette source d'énergie électrochimique

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Publication number
EP2095458A1
EP2095458A1 EP07849440A EP07849440A EP2095458A1 EP 2095458 A1 EP2095458 A1 EP 2095458A1 EP 07849440 A EP07849440 A EP 07849440A EP 07849440 A EP07849440 A EP 07849440A EP 2095458 A1 EP2095458 A1 EP 2095458A1
Authority
EP
European Patent Office
Prior art keywords
energy source
anode
cathode
electrochemical energy
source according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07849440A
Other languages
German (de)
English (en)
Inventor
Johannes H. G. Op Het Veld
Rogier A. H. Niessen
Remco H. W. Pijnenburg
Petrus H. L. Notten
Youri V. Ponomarev
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Priority to EP07849440A priority Critical patent/EP2095458A1/fr
Publication of EP2095458A1 publication Critical patent/EP2095458A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0436—Small-sized flat cells or batteries for portable equipment
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/13—Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
    • H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/34—Gastight accumulators
    • H01M10/345—Gastight metal hydride accumulators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H01M4/661—Metal or alloys, e.g. alloy coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/64—Carriers or collectors
    • H01M4/66—Selection of materials
    • H01M4/664—Ceramic materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/40—Printed batteries, e.g. thin film batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • Electrochemical energy source and electronic device provided with such an electrochemical energy source
  • the invention relates to an improved electrochemical energy source.
  • the invention also relates to an electronic device provided with such an electrochemical energy source.
  • Electrochemical energy sources based on solid-state electrolytes are known in the art. These (planar) energy sources, or 'solid-state batteries', efficiently convert chemical energy into electrical energy and can be used as the power sources for portable electronics.
  • 'solid-state batteries' efficiently convert chemical energy into electrical energy and can be used as the power sources for portable electronics.
  • new application areas arise like implantables, small autonomous devices, smart cards, integrated lighting solutions (OLED's) or hearing aids.
  • These low-power and small- volume applications require small batteries with a large volumetric energy/power density.
  • the gravimetric energy/power density is of minor importance due to the small size.
  • an electrochemical energy source comprising: a substrate, and at least one battery cell deposited onto said substrate, the battery cell comprising: an anode, a cathode, and an solid-state electrolyte separating said anode and said cathode, wherein the anode and the cathode are tailored to each other, such that the total volume change of the assembly of the anode and the cathode is less than 20% during charging and discharging of the battery cell.
  • a volume expansion respectively reduction of the anode during charging can be counteracted substantially by a volume reduction respectively expansion of the cathode
  • a volume expansion respectively reduction of the cathode during discharging can be counteracted substantially by a volume reduction respectively expansion of the anode.
  • the anode and the cathode are tailored to each other, such that the total volume change of the assembly of the anode and the cathode is less than 15%, preferably less than 10%, in particularly less than 5% during charging and discharging of the battery cell. Eliminating a volume change of the assembly of the anode and the cathode would also be technically feasible in theory, however this would commonly result in a battery cell having an unsatisfactory volumetric energy density and/or could lead to an impractical excessive battery volume.
  • the aim to minimize the total volume change of the assembly of the anode and the cathode during battery operation should be balanced against certain predefined boundary conditions, such as a minimum required volumetric energy density, and an acceptable dimensioning and shape of the battery cell.
  • the materials of the anode and the cathode are chosen such that the total volume change of the assembly of the anode and the cathode is less than 20%, and more preferably as less as practically possible, during charging and discharging of the battery cell. This way of smartly choosing an anode material and a compatible cathode material is also considered as chemical matching.
  • the volume of the anode and the cathode are chosen such that the total volume change of the assembly of the anode and the cathode is less than 20%, and more preferably as less as practically possible, during charging and discharging of the battery cell.
  • the method, wherein the volume of the anode and the volume of the cathode are mutually tailored, is also considered as geometrical matching.
  • both chemical matching and geometrical matching are applied to the at least one battery cell to minimise the total volume change of the assembly of the anode and the cathode, while preserving a satisfying volumetric energy density of the battery cell of the energy source according to the invention.
  • the energy density reduction ratio (G) between an optimized volumetric energy density ( ⁇ c v + e a ) of the assembly of the anode and the cathode on one side, and the volumetric energy density ( ⁇ f e +a ) optimized for a predefined volume change of the assembly of the anode and the cathode on the other side is between 0.25 and 1, preferably between 0.5 and 1, more preferably between 0.75 and 1, and in particularly between 0.9 and 1.
  • the energy density reduction ration is dependent on the characteristics of the anode material and the cathode material used, wherein the energy reduction ratio G as such is preferably practically maximised in order to reduce to loss of volumetric energy density, and hence the loss of battery efficiency.
  • the anode and the cathode of at least one battery cell of the energy source according to the invention are adapted for storage of active species of at least one of following elements: hydrogen (H), lithium (Li), beryllium (Be), magnesium (Mg), aluminium (Al), copper (Cu), silver (Ag), sodium (Na) and potassium (K), or any other suitable element which is assigned to group 1 or group 2 of the periodic table.
  • the electrochemical energy source of the energy system according to the invention may be based on various intercalation mechanisms and is therefore suitable to form different kinds of (reserve-type) battery cells, e.g. Li-ion battery cells, NiMH battery cells, et cetera.
  • At least one electrode, more the battery anode comprises at least one of the following materials: C, Sn, Ge, Pb, Zn, Bi, Sb, Li, and, preferably doped, Si.
  • a combination of these materials may also be used to form the electrode(s).
  • n-type or p-type doped Si is used as electrode, or a doped Si-related compound, like SiGe or SiGeC.
  • other suitable materials may be applied as anode, preferably any other suitable element which is assigned to one of groups 12-16 of the periodic table, provided that the material of the battery electrode is adapted for intercalation and storing at least one of the abovementioned reactive species.
  • the anode preferably comprises a hydride forming material, such as ABs-type materials, in particular LaNi 5 , and such as magnesium-based alloys, in particular Mg x Tii_ x .
  • the cathode for a lithium ion based cell may comprise at least one metal-oxide based material, e.g. LiCoO 2 , LiNiO 2 , LiMnO 2 or a combination of these such as. e.g. Li(NiCoMn)O 2 .
  • the cathode may comprise Ni(OH) 2 and/or NiM(OH) 2 , wherein M is formed by one or more elements selected from the group of e.g. Cd, Co, or Bi.
  • the anode comprises Li y Si and the cathode comprises Li x NiO 2 . It has been found that this particular combination has beneficial volumetric energy density at a predefined volume change of e.g. 5%.
  • the electrochemical energy source has a non-planar geometry, being a geometry deviating from a planar geometry, such as for example a curved plane geometry, or a hooked geometry.
  • a major advantage of the electrochemical energy source having a non-planar geometry is that any desired shape of said electrochemical energy source can be realized such that the freedom of choice as regards shape and format of said electrochemical energy source is many times greater than the freedom offered by the state of the art.
  • the geometry of said electrochemical energy source can thus be adapted to spatial limitations imposed by any electrical apparatus in which the battery can be used.
  • At least one electrode of the anode and the cathode is patterned at least partially.
  • a three-dimensional surface area, and hence an increased surface area per footprint of the electrode(s), and an increased contact surface per volume between the at least one electrode and the electrolyte is obtained.
  • This increase of the contact surface(s) leads to an improved rate capacity of the energy source, and hence to an increased performance of the energy source according to the invention. In this way the power density in the energy source may be maximized and thus optimized. Due to this increased cell performance a small-scale energy source according to the invention will be adapted for powering a small-scale electronic device in a satisfying manner.
  • the freedom of choice of (small-scale) electronic components to be powered by the electrochemical energy source according to the invention will be increased substantially.
  • the nature, shape, and dimensioning of the pattern may be various, as will be elucidated below. It is preferred that at least one surface of at least one electrode is substantially regularly patterned, and more preferably that the applied pattern is provided with one or more cavities, in particular pillars, trenches, slits, or holes, which particular cavities can be applied in a relatively accurate manner. In this manner the increased performance of the electrochemical energy source can also be predetermined in a relatively accurate manner.
  • a surface of the substrate onto which the stack is deposited may be either substantially flat or may be patterned (by curving the substrate and/or providing the substrate with trenches, holes and/or pillars) to facilitate generating a three-dimensional oriented cell.
  • both the anode and the cathode are connected to a current collector respectively, wherein the current collectors are made of at least one of the following materials: Al, Ni, Pt, Au, Ag, Cu, Ta, Ti, TaN, and TiN.
  • Other kinds of current collectors such as, preferably doped, semiconductor materials such as e.g. Si, GaAs, InP may also be applied to act as current collector.
  • the invention also relates to an electronic device provided with at least one electrochemical energy source according to the invention, and at least one electronic component connected to said electrochemical energy source.
  • the at least one electronic component is preferably at least partially embedded in the substrate of the electrochemical energy source.
  • SiP System in Package
  • the electrochemical energy source according to the invention is ideally suitable to provide power to different kind of electronic devices, like domestic electrical appliances, such as laptops, and relatively small high power electronic applications, such as (bio)implantantables, hearing aids, autonomous network devices, and nerve and muscle stimulation devices.
  • electronic devices like domestic electrical appliances, such as laptops, and relatively small high power electronic applications, such as (bio)implantantables, hearing aids, autonomous network devices, and nerve and muscle stimulation devices.
  • Fig. 1 shows a schematic view of chemical electrode matching
  • Fig. 2 shows a schematic view of geometrical electrode matching
  • Fig. 3 shows a chart of the relative volume expansion as a function of the anode volume expansion factor F
  • Fig. 4 shows a chart of the energy reduction ratio G as a function of the volume reduction ratio F at a volume change of 5%
  • Fig. 3 shows a chart of the relative volume expansion as a function of the anode volume expansion factor F
  • Fig. 4 shows a chart of the energy reduction ratio G as a function of the volume reduction ratio F at a volume change of 5%
  • Fig. 5 shows a comparative chart of the anode and cathode volumes as a function of a lithuim concentration with said anode and said cathode.
  • the chemical electrode matching method is based on the right combination of anode and cathode materials so that the overall volume expansion is low (see figure 1), wherein the starting point is the situation optimized for volumetric energy density using superscript indexing ( ed ) and the end point is the situation optimized for less volume expansion using superscript indexing ( ve ).
  • This method is based on the replacement of one or both electrode materials chemistry in order to reduce the overall volume expansion ⁇ omAV c]+a] to AV c2+a2 .
  • Table 1 shows a combination of two anode materials (Si and Li) and two cathode materials [LiCoO 2 and LiNiO 2) of a solid-state battery (comprising a solid-state electrolyte) where V c+a (chg) is the sum of the cathode and anode volume for a charged battery system and ⁇ V c+a the absolute volume expansion between the discharged and charged state.
  • a conventional reference battery system is Li - LiCo ⁇ 2.
  • Battery systems with a very high volumetric energy density ⁇ c+a (0.3 mWh/ ⁇ mxm 2 ) are Li- Li x Ni ⁇ 2 and Li y Si-
  • Table 1 Volumes expansion rates and energy densities for several battery systems, wherein each battery system is normalised for delivery of 1 mAh charge.
  • Geometrical electrode matching means that the volume of at least one of the electrodes is changed in such a way that the total volume expansion of a stack is rather low.
  • Figure 2 shows an example where the anode volume is reduced by a factor F ( ⁇ ⁇ F ⁇ l) .
  • Li based battery systems show a large volumetric expansion ratio compared to Li y Si based systems. This means that for Li based systems, the volume of the anode should be reduced much more in order to get less volume expansion as for Li y Si based systems and accordingly, the anode reduction factor F will be much closer to 1. As a consequence, the volumetric energy density will be reduced due to the fact that the volume of both electrodes will change. The change in energy density is denoted by
  • volume expansion ratio ⁇ R V of -5% is plotted in figure 4.
  • Table 2 Volume expansion and volumetric energy density before and after reduction of the anode volume in order to get -5% expansion. It can be deduced from Table 2 that the reference battery system Li-Li x Co ⁇ 2 has a relatively poor volumetric energy density (0.203 mWh/ ⁇ m.cm 2 ) and at the same time a relatively large relative large volume expansion ratio (-12.7 %). Chemical matching will result in that it is more beneficial to apply a battery system with an increased volumetric energy density, such as the Li-Li x Ni ⁇ 2 (0.312 mWh/ ⁇ m.cm 2 ) based battery system or the
  • LiySi-Li x Ni ⁇ 2 (0.306 mWh/ ⁇ m.cm 2 ) based battery system.
  • the latter two preferred battery systems can be matched geometrically, resulting in a reduction of the volumetric energy density of both battery systems.
  • the Li-Li x Ni ⁇ 2 based battery system will have a volumetric energy density of 0.069 mWh/ ⁇ m.cm 2
  • the Li y Si-Li x Ni ⁇ 2 based battery system will have a volumetric energy system density of 0.131 mWh/ ⁇ m.cm 2 .
  • Li y Si-Li x Ni ⁇ 2 based battery system having the highest volumetric energy density in case a predefined volume expansion ration of -5% is required.
  • the geometrical matching method is described to obtain less volume expansion of a battery stack consisting of a Si or Li anode (a) and LiCo ⁇ 2 or LiNiO 2 cathode (c), see tables 3, 4 and 5 for materials data.
  • V a ( ⁇ ' max ) ' ⁇ a (y mm ) an d ⁇ ⁇ a represent the concentration, the equilibrium potential versus LiZLi + , the volume at maximum concentration, the volume at minimum concentration and the absolute volume expansion, respectively, for the anode material.
  • the quantities x , U c ⁇ x) , V c (x max ) , V c (x mm ) and ⁇ V C represent the concentration, the equilibrium potential versus LiZLi + , the volume at maximum concentration, the volume at minimum concentration and the absolute volume expansion, respectively, for the cathode material.
  • FIG. 5 shows a graphical representation for both these situations.
  • the unbroken lines in figure 5 show the original situation at maximal volumetric energy density and the dashed lines represent the situation after reduction of the anode volume V a in order to get less volume expansion for the sum of both electrodes ⁇ V c+a -I .
  • the anode and cathode volume V a and V c depend on the Li concentration y and x respectively.
  • Ki ⁇ chg V: d ⁇ x mm ) + V: d ⁇ y max )
  • Vf ⁇ dis V: d ⁇ x max ) + V: d ⁇ y mm ) (3)
  • x mm and x max are respectively the minimal and maximal Li content in the Li x Ni ⁇ 2 cathode and y mm and y max the minimal and maximal Li content in the Li y Si anode.
  • K d V: d ⁇ x mm )-a c ed -x mm
  • Reduction of the anode volume with a factor F reduces the amount of Li atoms in the anode so the amount of charge that will be shuttled between the anode and cathode is also reduced by the same factor F .
  • VllXchg V: d ⁇ x mm ) + F-V: d ⁇ y max )
  • Vr ⁇ dis V: d (x,) + F-V a ed (y mm ) (9)
  • the relative volume expansion factor AR V defined as the volume expansion AV ⁇ l a divided by the volume in charged state V c v l a (chg) , is
  • FIG. 4 in (16) gives the relation between the anode volume reduction factor F and the desired relative volume expansion factor ⁇ R V .
  • Figure 3 shows the results for the anode-cathode combinations Li-Li x CoO 2, Li-Li x NiO 2 , Li y Si-Li x Co ⁇ 2 and Li y Si-Li x Ni ⁇ 2.
  • the volumetric energy density will have to become smaller. This reduction is dependent on the anode-cathode materials combination.
  • the impact on the volumetric energy density will be calculated.
  • volumetric energy density ⁇ c+a is defined as the electrochemical energy E bat stored in the battery system divided by the sum of the anode and cathode volume for a charged battery system V c+a ⁇ chg) .
  • the energy stored in the battery is equal to
  • vzMg v: d ⁇ x mm )+v: d (y max )
  • the average battery voltage U bat is the difference between the average cathode potential
  • the concentration in the cathode x is limited tox * instead of x max so the average cathode voltage U c is
  • the potential of the cathode Uf (x, ) at concentration jc. can be calculated because the voltage of an electrode is assumed to be linearly dependent on the concentration
  • Table 6 gives the corresponding data for the battery systems: Li-Li x Co ⁇ 2, Li-Li x Ni ⁇ 2, Li y Si-Li x Co ⁇ 2 and Li y Si- Li x NiO 2 .
  • Table 6 Volume expansion and volumetric energy density after reduction of the anode volume in order to get -5% expansion.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Materials Engineering (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Secondary Cells (AREA)
  • Cell Electrode Carriers And Collectors (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

La présente invention concerne des sources d'énergie électrochimique basées sur des électrolytes solides connues dans l'état de la technique. Ces sources d'énergie, ou 'batteries solides' convertissent de façon efficace l'énergie chimique en énergie électrique et peuvent être utilisées en tant que sources de puissance pour des appareils électroniques portables. De nos jours, de nouveaux champs d'application voient le jour, tels que les dispositifs implantables, les petits dispositifs autonomes, les cartes intelligentes, les solutions d'éclairage intégré ou les prothèses auditives. L'invention concerne également une source d'énergie électrochimique améliorée ainsi qu'un dispositif électronique doté de cette source d'énergie électrochimique, la variation de volume du système délectrodes anode et cathode étant minimisée au cours de la charge et de la décharge de la batterie.
EP07849440A 2006-12-18 2007-12-12 Source d'énergie électrochimique et dispositif électronique doté de cette source d'énergie électrochimique Withdrawn EP2095458A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07849440A EP2095458A1 (fr) 2006-12-18 2007-12-12 Source d'énergie électrochimique et dispositif électronique doté de cette source d'énergie électrochimique

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP06126364 2006-12-18
PCT/IB2007/055042 WO2008075251A1 (fr) 2006-12-18 2007-12-12 Source d'énergie électrochimique et dispositif électronique doté de cette source d'énergie électrochimique
EP07849440A EP2095458A1 (fr) 2006-12-18 2007-12-12 Source d'énergie électrochimique et dispositif électronique doté de cette source d'énergie électrochimique

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EP2095458A1 true EP2095458A1 (fr) 2009-09-02

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EP (1) EP2095458A1 (fr)
JP (1) JP2010514123A (fr)
CN (1) CN101563806A (fr)
WO (1) WO2008075251A1 (fr)

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