Electrode material for battery, paste thereof, solar cell using the same, storage battery, and manufacturing method of solar cell
A solar cell and electrode material technology, applied in the field of solar cells, can solve problems such as difficult to improve power generation efficiency or power storage performance, and achieve the effect of improving power generation efficiency and power storage performance
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no. 1 Embodiment approach
[0023] The battery electrode material according to the first embodiment is provided with a film portion on the tungsten oxide powder or the tungsten oxide composite material powder, and the film portion has at least one element selected from metal oxides, silicon oxides, metal nitrides, and silicon nitrides. more than one species.
[0024] Tungsten oxide is preferably tungsten trioxide (WO 3 ). In addition, as the tungsten oxide composite material, for example, tungsten oxide containing elements such as N, Ti, Mn, Fe, Pd, Pt, Cu, Ag, Al, Ce in the range of 0.01 mass % to 2 mass % can be specified. However, the elements contained in tungsten oxide are not limited to the exemplified elements, and can be appropriately changed.
[0025] Tungsten oxide powder or tungsten oxide composite powder preferably has a BET surface area greater than or equal to 5m 2 / g. If the BET surface area is as small as below 5m 2 / g, the contact area between the tungsten oxide powder and the sensi...
no. 2 Embodiment approach
[0037] The battery electrode material paste of the second embodiment will be described. The paste contains the battery electrode material of the first embodiment, a binder, and a solvent. When the total of the battery electrode material, binder, and solvent is defined as 100 wt%, the battery electrode material is preferably in the range of 5 to 50 wt%, and the binder is preferably in the range of 3 to 30 wt%. If it is in this range, it will be easy to adjust the viscosity (25 degreeC) of a paste to the range of 800-10000 cps. In addition, if the viscosity of the paste is 800 to 10000 cps, it is easy to form a semiconductor layer by a coating technique such as a printing method.
[0038] As the binder, an organic binder having a thermal decomposition rate of 99.0% or higher at 500° C. is preferable. If it can be thermally decomposed at a temperature of 500° C. or lower, the glass substrate or the like will not be damaged. Examples of such a binder include organic binders suc...
no. 3 Embodiment approach
[0041] figure 1 It is a schematic cross-sectional view illustrating a solar cell (dye-sensitized solar cell) according to the third embodiment.
[0042] like figure 1 As shown, in the solar cell 1 , a counter electrode part 21 , a photoelectrode part 22 , an electrolytic solution 7 and a sealing part 8 are provided. The counter electrode portion 21 is provided with the first substrate 2 , the first electrode 3 , and the first bonding portion 9 . The photoelectrode portion 22 is provided with the second substrate 4 , the transparent electrode 5 , the second electrode 6 , and the second bonding portion 10 .
[0043] As the first substrate 2 , a substrate having heat resistance against heat at the time of packaging described later, chemical resistance against the electrolytic solution 7 , and the like can be specified. The second substrate 4 is defined to be translucent, but the first substrate 2 may be either translucent or opaque.
[0044] Therefore, the first substrate 2 c...
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Abstract
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