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US 2015/0086901 A1Published application
Porous electrode base material, method for manufacturing same, and precursor sheet
AssigneeMitsubishi Rayon Co., Ltd.
InventorHiroto Tatsuno
Life of this patent
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Abstract
The present invention relates to a method for manufacturing a porous electrode base material including the following steps [1] to [3]: [1] a step for dispersing short carbon fibers (A) to form a sheet-form product; [2] a step for adding, to the sheet-form product, at least one phenolic resin (c) selected from a group consisting of a water soluble phenolic resin and a water dispersible phenolic resin along with carbon powder (d) to form a precursor sheet; and [3] a step for carbonizing the precursor sheet at the temperature of 1000° C. or higher, after the step [2].
Claims17
A method for manufacturing a porous electrode base material, the method comprising:
- [1] dispersing short carbon fibers (A) to form a sheet-form product;
- [2] adding, to the sheet-form product, at least one phenolic resin (c) selected from the group consisting of a water soluble phenolic resin and a water dispersible phenolic resin along with carbon powder (d) to form a precursor sheet;
- and
- [3] carbonizing the precursor sheet at a temperature of 1000° C. or higher, after said adding [2].
1 more element
A porous electrode base material, comprising:
- a sheet-form structure having short carbon fibers (A) bound by a resin carbide (C) derived from at least one selected from the group consisting of a water soluble phenolic resin and a water dispersible phenolic resin,
- wherein carbon powder (d) is localized in the vicinity of a surface layer of a single side or both sides of the sheet-form structure.
A porous electrode base material, comprising:
- a sheet-form structure having short carbon fibers (A) bound by a resin carbide (C),
- wherein a region having the short carbon fibers (A) and carbon powder (d) bound by the resin carbide (C) is localized in the vicinity of a surface layer of a single side or both sides of the sheet-form structure.
A porous electrode base material, comprising:
- a sheet-form structure having short carbon fibers (A) bound by a resin carbide (C),
- wherein
- a region having the short carbon fibers (A) and carbon powder (d) bound by the resin carbide (C) is included in the vicinity of a surface layer of a single side or both sides of the sheet-form structure,
- a pore occupancy in a region X from a surface of a plane having the aforementioned region to a depth of 20 μm is less than 30%, and
- a pore occupancy in a region Y from center of the sheet-form structure to a depth of 40 μm in a thickness direction is 50 to 90%.
2 more elements
A porous electrode base material, comprising:
- a sheet-form structure having short carbon fibers (A) bound by carbon fibers (B) with a fiber diameter of 0.1 to 5 μm and a resin carbide (C) derived from at least one selected from the group consisting of a water soluble phenolic resin and a water dispersible phenolic resin,
- wherein
- the short carbon fibers (A) form a three-dimensional entanglement structure in the sheet-form structure, and
- carbon powder (d) is localized in the vicinity of a surface layer of a single side or both sides of the sheet-form structure.
1 more element
A porous electrode base material, comprising:
- a sheet-form structure having short carbon fibers (A) bound by carbon fibers (B) with a fiber diameter of 0.1 to 5 μm and a resin carbide (C),
- wherein
- the short carbon fibers (A) form a three-dimensional entanglement structure in the sheet-form structure, and
- a region having the short carbon fibers (A) and carbon powder (d) bound by the resin carbide (C) is localized in the vicinity of a surface layer of a single side or both sides of the sheet-form structure.
1 more element
A porous electrode base material, comprising:
- a sheet-form structure having short carbon fibers (A) bound by carbon fibers (B) with a fiber diameter of 0.1 to 5 μm and a resin carbide (C),
- wherein
- the short carbon fibers (A) form a three-dimensional entanglement structure in the sheet-form structure,
- a region having the short carbon fibers (A) and carbon powder (d) bound by the resin carbide (C) is included in the vicinity of a surface layer of a single side or both sides of the sheet-form structure,
- a pore occupancy in a region X from a surface of a plane having the aforementioned region to a depth of 20 μm is less than 30%, and
- a pore occupancy in a region Y from center of the sheet-form structure to a depth of 40 μm in a thickness direction is 50 to 90%.
3 more elements
A precursor sheet, comprising:
- a sheet-form structure having short carbon fibers (A) bound by a phenolic resin (c),
- wherein carbon powder (d) is localized in the vicinity of a surface layer of a single side or both sides of the sheet-form structure.
A precursor sheet, comprising:
- a sheet-form structure having short carbon fibers (A) bound by a phenolic resin (c),
- wherein a region having the short carbon fibers (A) and carbon powder (d) bound by the phenolic resin (c) is localized in the vicinity of a surface layer of a single side or both sides of the sheet-form structure.
A precursor sheet, comprising:
- a sheet-form structure having short carbon fibers (A) bound by a phenolic resin (c),
- wherein
- a region having the short carbon fibers (A) and carbon powder (d) bound by the phenolic resin (c) is included in the vicinity of a surface layer of a single side or both sides of the sheet-form structure,
- a pore occupancy in a region X from a surface of a plane having the aforementioned region to a depth of 20 μm is less than 25%, and
- a pore occupancy in a region Y from center of the sheet-form structure to a depth of 40 μm in a thickness direction is 35 to 70%.
2 more elements
A precursor sheet, comprising:
- a sheet-form structure having short carbon fibers (A) and carbon fiber precursor short fibers (b) bound by a phenolic resin (c),
- wherein
- the short carbon fibers (A) form a three-dimensional entanglement structure in the sheet-form structure, and
- a region having the short carbon fibers (A) and carbon powder (d) bound by the phenolic resin (c) is localized in the vicinity of a surface layer of a single side or both sides of the sheet-form structure.
1 more element
Dependencies are inferred from the claim text.