Fuel composition in fuel cartridges for DMFCs
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C10L-001/12
C10L-001/10
C10L-001/18
출원번호
US-0688711
(2003-10-17)
등록번호
US-7314493
(2008-01-01)
발명자
/ 주소
Ren,Xiaoming
Shufon,Kevin J.
Kovacs,Frank W.
출원인 / 주소
The Gillette Company
대리인 / 주소
Cesari and McKenna LLP
인용정보
피인용 횟수 :
2인용 특허 :
8
초록▼
Fuel mixtures for direct methanol fuel cells are disclosed. The fuels include methanol and additives that react with water to produce methanol and other easily electro-oxidizable compounds including dimethyloxymethane, methylorthoformate, tetramethylorthocarbonate, trimethylborate, and tetramethylo
Fuel mixtures for direct methanol fuel cells are disclosed. The fuels include methanol and additives that react with water to produce methanol and other easily electro-oxidizable compounds including dimethyloxymethane, methylorthoformate, tetramethylorthocarbonate, trimethylborate, and tetramethylorthosilicate. Other additives to improve safety and efficiency of the fuel cell include sulfonated activated carbon particles and metal hydrides, such as LiAlH4, NaBH4, LiBH4, (CH3)2 NHBH3, NaAlH4, B2H6, NaCNBH3, CaH2, LiH, NaH, KH or sodium bis (2-methoxyethoxy) dihydridaluminate.
대표청구항▼
What is claimed is: 1. A fuel for a direct methanol fuel cell comprising: methanol; and an effective amount of an additive that undergoes a reaction with water to produce small molecules that are easily electro oxidized wherein the additive is about 20 mole percent dimethyloxymethane, and an indica
What is claimed is: 1. A fuel for a direct methanol fuel cell comprising: methanol; and an effective amount of an additive that undergoes a reaction with water to produce small molecules that are easily electro oxidized wherein the additive is about 20 mole percent dimethyloxymethane, and an indicating dye that includes sulfonated activated carbon particles. 2. A fuel for a direct methanol fuel cell comprising: methanol, an effective amount of an additive that undergoes a reaction with water to produce small molecules that are easily electro oxidized wherein the additive is methylorthoformate in such a proportion that the fuel comprises about 10 mole percent methylorthoformate; and an indicating dye that includes sulfonated activated carbon particles. 3. A fuel for a direct methanol fuel cell comprising: methanol, an effective amount of an additive that undergoes a reaction with water to produce small molecules that are easily electro oxidized wherein the additive is tetramethylorthocarbonate in such a proportion that the fuel comprises about 10 mole percent tetramethylorthocarbonate; and less than about 0.1% but greater then 0% by weight of an indicating dye. 4. A fuel for a direct methanol fuel cell as in claim 3 where the indicating dye includes sulfonated activated carbon particles. 5. A fuel for a direct methanol fuel cell comprising: methanol, an effective amount of an additive that undergoes a reaction with water to produce small molecules that are easily electro oxidized wherein the additive is trimethylborate in such a proportion the fuel comprises about 7 mole percent trimethylborate; and an indicating dye that includes sulfonated activated carbon particles. 6. A fuel for a direct methanol fuel cell comprising: methanol; and an effective amount of an additive that undergoes a reaction with water to produce small molecules that are easily electro oxidized wherein the additive is tetramethylorthosilicate. 7. A fuel for a direct methanol fuel cell as in claim 6, wherein the fuel comprises about 5 mole percent tetramethylorthosilicate. 8. A fuel for a direct methanol fuel cell as in claim 7 further comprising less than about 0.1% by weight of an indicating dye. 9. A fuel for a direct methanol fuel cell as in claim 8 where the indicating dye includes sulfonated activated carbon particles. 10. A method of preparing a fuel mixture for a direct methanol fuel cell comprising the steps of: a) providing a supply of concentrated methanol; b) adding an additive which is a fuel precursor in an effective amount such that said additive undergoes a reaction with water to produce small molecules that are easily electro oxidized selected from the group consisting of: dimethyloxymethane, methylorthoformate, tetramethyl orthocarbonate, trimethyl borate, and tetramethyl orthosilicate; and adding at least one metal hydride selected from the group consisting of LiAlH4, NaBH4, LiBH4, (CH3)2 NHBH3, NaAlH4, B2H6, NaCNBH3, CaH2, LiH, NaH, KH and sodium bis (2-methoxyethoxy) dihydridaluminate.
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이 특허에 인용된 특허 (8)
Surampudi Subbarao (Glendora CA) Narayanan Sekharipuram R. (Altadena CA) Vamos Eugene (La Canada CA) Frank Harvey A. (Encino CA) Halpert Gerald (Pasadena CA) Olah George A. (Beverly Hills CA) Prakash, Aqueous liquid feed organic fuel cell using solid polymer electrolyte membrane.
Hagen Gary P. ; Spangler Michael J., Preparation of polyoxymethylene dimethyl ethers by acid-activated catalytic conversion of methanol with formaldehyde formed by oxy-dehydrogenation of dimethyl ether.
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