Electrolyte composition and electrochemical battery using the same

• US 6,627,099 B2
• Filed: 08/22/2001
• Issued: 09/30/2003
• Est. Priority Date: 08/22/2000
• Status: Expired due to Fees

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fuji Photo Film Co Limited (Fujifilm Holdings Corporation)
• Inventors: Yasuda, Takayasu, Wariishi, Koji, Ono, Michio, Qian, Chang-yi
• Primary Examiner(s): KOSLOW, CAROL M
• Application Number:
  US09/933,716
• Publication Number:
  US 20020055046A1
• Time in Patent Office: 769 Days
• Field of Search: 252/62.2, 252/299.3, 429/199, 429/324, 429/200, 429/347, 429/306, 136/252, 136/243, 136/254, 136/263
• US Class Current: 252/62.2
• CPC Class Codes: H01G 9/2009 Solid electrolytes
• CPC Class Codes: H01G 9/2013 the electrolyte comprising ionic liquids, e.g. alkyl imidazolium iodide
• CPC Class Codes: H01G 9/2031 comprising titanium oxide, e.g. TiO2 H01G9/2036 takes precedence
• CPC Class Codes: H01G 9/2036 comprising mixed oxides, e.g. ZnO covered TiO2 particles
• CPC Class Codes: H01G 9/2059 comprising an organic dye as the active light absorbing material, e.g. adsorbed on an electrode or dissolved in solution
• CPC Class Codes: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• CPC Class Codes: H01M 10/0565 Polymeric materials, e.g. gel-type or solid-type
• CPC Class Codes: H01M 10/0568 characterised by the solutes
• CPC Class Codes: H01M 10/058 Construction or manufacture
• CPC Class Codes: H01M 4/131 Electrodes based on mixed oxides or hydroxides, or on mixtures of oxides or hydroxides, e.g. LiCoOx
• CPC Class Codes: H01M 4/133 Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
• CPC Class Codes: H01M 4/139 Processes of manufacture
• CPC Class Codes: H01M 4/485 of mixed oxides or hydroxides for inserting or intercalating light metals, e.g. LiTi2O4 or LiTi2OxFy H01M4/505, H01M4/525 take precedence
• CPC Class Codes: H01M 4/505 of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
• CPC Class Codes: H01M 4/525 of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
• CPC Class Codes: H01M 4/5815 Sulfides
• CPC Class Codes: H01M 4/5825 Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
• CPC Class Codes: H01M 4/587 for inserting or intercalating light metals
• CPC Class Codes: H01M 6/40 Printed batteries , e.g. thin film batteries
• CPC Class Codes: Y02E 10/542 Dye sensitized solar cells
• CPC Class Codes: Y02E 60/10 : Energy storage using batteries

Abstract

An electrolyte composition which is excellent in durability and charge transport performance, and an electrochemical battery in which deterioration of the charge transport performance with time is minimized, the electrolyte composition including therein a salt which comprises an anion which contains a mesogen group, and an alkyl or alkenyl group having 6 carbons or more in the structure of the anion, and an organic or inorganic cation.

Claims

1. An electrolyte composition that includes a salt therein, the salt comprising:

an anion which contains a mesogen group and an alkyl or alkenyl group having 6 carbons or more in the structure thereof; and

an organic or inorganic cation.

2. An electrolyte composition according to claim 1, wherein the mesogen group is represented by the following formula (1):

wherein Y₁₁ represents a bivalent 4 to 7-membered ring group or a condensed ring group formed thereof, Q₁₂ and Q₁₃ independently represent a bivalent linking group or a single bond, n represents 1, 2 or 3, and when n is 2 or 3, a plurality of Y₁₁, Q₁₂, and Q₁₃ respectively may be the same or different.

3. An electrolyte composition according to claim 1, wherein the mesogen group is represented by the following formula (1):

wherein Y₁₁ represents a bivalent 4 to 7-membered ring group or a condensed ring group formed thereof, each of Q₁₂ and Q₁₃ represents a bivalent linking group or a single bond, n represents 1, 2 or 3, and when n is 2 or 3, a plurality of Y₁₁, Q₁₂, and Q₁₃ respectively may be the same or different, and said salt is represented by the following formula (2);

wherein Y₁₁ represents a bivalent 4 to 7-membered ring group, or a condensed ring group formed thereof, Q₁₂ and Q₁₃ independently represent a bivalent linking group or a single bond, n represents 1, 2 or 3, and when n is 2 or 3, a plurality of Y₁₁ and Q₁₂ respectively may be the same or different;

R₁ represents a substituted or unsubstituted alkyl or alkenyl group having 6 carbons or more, L₁ and L₂ independently represent a bivalent linking group or a direct bond, R₂ represents a substituent group, m represents 0 or 1, X⁻

represents an anionic group, and Y⁺ represents an organic or inorganic cation.

4. An electrolyte composition according to claim 1, wherein said cation is an organic cation.

5. An electrolyte composition according to claim 1, wherein said cation is a lithium cation.

6. An electrolyte composition according to claim 1, wherein said anion includes an anionic group in which hydrogen is dissociated from at least one selected from groups such as a sulfonamide group, a disulfonimide group, an N-acylsulfonamide group, a carboxylic acid group, a sulfonic acid group, a hydroxyl group, an active methylene group, and an active methine group.

7. An electrolyte composition according to claim 1, wherein at least one of said anion and said cation includes in the structure thereof a group represented by the following formula (3):

wherein R₃, R₄, R₅, and R₆ independently represent a hydrogen atom or a substituted or unsubstituted alkyl group, and n₂ represents any integer from 1 to 20.

8. An electrolyte composition according to claim 1, wherein at least one of said anion and said cation includes a polymerizable group in the structure thereof.

9. The electrolyte composition according to claim 1, wherein at least one of said anion and said cation is a high polymer.

10. The electrolyte composition according to claim 1, which includes therein an iodine salt compound and iodine.

11. An electrolyte composition according to claim 1 that includes further a salt therein, the salt comprising:

an cation which contains a mesogen group and an alkyl or alkenyl group having 6 carbons or more in the structure thereof; and

a freely selected anion.

12. An electrochemical battery which includes therein said electrolyte composition according to claim 1.

13. The electrochemical battery according to claim 12, which is a photoelectric chemical battery that comprises:

a charge transport layer which includes said electrolyte composition;

a photosensitive layer which includes a dye-sensitized semiconductor; and

a counter electrode.

14. The electrochemical battery according to claim 12, which is a non-aqueous secondary battery.