TWI573281B - A Chlorophyll Battery and a Method of Manufacturing the Same - Google Patents

Description

Chlorophyll solar cell and its preparation method

The invention relates to a solar cell, in particular to a chlorophyll solar cell and a preparation method thereof.

Referring to Figure 1, Taiwan Patent Publication No. I443894 discloses a chlorophyll solar cell. The chlorophyll solar cell comprises a layer of chlorophyll coating 11, two layers of separators 12 respectively disposed on the upper and lower sides of the chlorophyll coating 11, a first electrode 13 disposed on the top side of the separator 12 located above, and a layer disposed on the first layer A second electrode 14 on the bottom side of the separator 12 and two substrates 15 disposed above the first electrode 13 and below the second electrode 14 are disposed.

The separators 12 are made of a fiber material and adsorbed with a salt aqueous solution. The first electrode 13 includes a carbon conductive layer 131 in contact with the isolation film 12 located above, and a first conductive layer 132 between the carbon conductive layer 131 and the substrate 15 located above. The second electrode 14 includes a swarf layer 141 in contact with the underlying spacer film 12, and a second conductive layer 142 between the swarf layer 141 and the underlying substrate 15. The material of the first conductive layer 132 and the second conductive layer 142 may be selected from polyacetylene, polyarylethylene, polythiophene, polyaniline, polypyrrole, polypyrrole, and any combination of the foregoing.

According to the description of the case, the chlorophyll solar cell is environmentally friendly and is environmentally friendly, that is, the direct disposal after use does not impose a great burden on the environment. The fly in the ointment is that the structure of the chlorophyll solar cell is too complicated, and the total forest has a total of nine layers of design. In addition to increasing the volume, it is also not conducive to mass production and needs to be improved.

A first object of the present invention is to provide a chlorophyll solar cell having a relatively simple construction and a small volume.

The chlorophyll solar cell comprises a first electrode, a second electrode, and a conductive unit.

The first electrode comprises a chlorophyll material and a first conductive polymer. The second electrode is spaced apart from the first electrode. The conductive unit is disposed between the first electrode and the second electrode.

The chlorophyll solar cell has the function of mixing the chlorophyll material with the first conductive polymer, omitting the method of coating the chlorophyll material, and other complicated layered structures, so that the structure of the invention is simple and the volume is relatively high. Small first purpose.

A second object of the present invention is to provide a method for producing a chlorophyll solar cell, which is advantageous for mass production of a chlorophyll solar cell.

The chlorophyll solar cell preparation method comprises the following steps: Step A: mixing a chlorophyll material with a first conductive material, and polymerizing the first conductive material into a first conductive polymer covering the chlorophyll material, and preparing an electrode semi-finished product. . Step B: forming the electrode semi-finished product into a first electrode with a third conductive polymer mainly composed of a third conductive material; and step C: providing a conductive unit. Step D: providing a second electrode. Step E: disposing the conductive unit between the first electrode and the second electrode.

The chlorophyll solar cell has the effect of coating and protecting the chlorophyll material with the first conductive polymer, so that the chlorophyll material is not damaged when the first electrode is formed, so that the co-extrusion or the co-extrusion can be utilized. The co-injection is processed by the same mass production method, and since the multi-layer coating method is not required in the production, the second object of the present invention for mass production can be achieved.

Referring to Figures 2 and 3, an embodiment of the chlorophyll solar cell of the present invention and a method of fabricating the same includes a centrally located conductive unit 2, a first disposed on one side of the conductive unit 2 and including a first conductive polymer 32 The electrode 3, and a second electrode 4 disposed on the other side of the conductive unit 2 and including a second conductive polymer 42.

The conductive unit 2 is disposed between the first electrode 3 and the second electrode 4, and includes a colloid 21, and an electrolyte 22 disposed in the colloid 21 (the figure is only schematic, the actual distribution of non-electrolytes). The colloid 21 can be composed of a copolymer of tetraethoxydecane, vinylidene fluoride and hexafluoropropylene, and any combination of the foregoing materials, in this embodiment, tetraethoxydecane. The electrolyte 22 is iodine and potassium iodide in this embodiment, but it is not particularly limited in practice. The selection of the electrolyte 22 is a basic technique possessed by those of ordinary skill in the art and will not be described here.

The first electrode 3 comprises a chlorophyll material 31 (illustration is merely illustrative, the actual distribution of the non-chlorophyll material), the first conductive polymer 32, and a third conductive polymer 33.

The chlorophyll material 31 is selected from the group consisting of chlorophyll-free, chlorophyll, and any combination of the foregoing. The phyt-free chlorophyll is a chlorophyll which itself does not have a long carbon chain, such as chlorophyll c1 and chlorophyll c2. The phytochlorophyll is obtained by removing a chlorophyll having a long carbon chain, such as chlorophyll a, chlorophyll b and chlorophyll d. Chlorinated chlorophyll can also be used in practice. The advantage of using chlorophyll without planting or deplanting is that the unit volume can contain a larger amount of chlorophyll material, and the power generation efficiency is better.

The first conductive polymer 32 and the third conductive polymer 33 are respectively polyaniline. In practice, the first conductive polymer 32 and the third conductive polymer 33 can use the same conductive polymer as the present embodiment, and can also be different conductive polymers. For example, the first conductive polymer 32 and the third conductive polymer 33 may be respectively selected from: polyacetylene, polyaryl hydrocarbon, polythiophene, polyaniline, polypyrrole, polypyrrole, and any combination of the foregoing materials. .

The second electrode 4 is spaced apart from the first electrode 3 and includes an energization material 41 and the second conductive polymer 42. The current-carrying material 41 is a platinum compound (hexachloroplatinic acid H ₂ PtCl ₆ ) in the present embodiment, but can also be selected from the group consisting of ruthenium, osmium, platinum iridium alloy, conductive carbon black powder, graphite powder, and any of the foregoing materials. combination. The second conductive polymer 42 is polyaniline in this embodiment, and a conductive polymer different from the first conductive polymer 32 and the third conductive polymer 33 can also be used in practice. The second conductive polymer 42 can also be selected from the group consisting of polyacetylene, polyarylethylene, polythiophene, polyaniline, polypyrrole, polypyrrole, and any combination of the foregoing.

In this embodiment, the first conductive polymer 32 can be coated with the chlorophyll and can be electrically conductive at the same time, and the method of coating the chlorophyll material 31 and other complicated layered structures are omitted, so that the structure of the present invention can be achieved simply. The first purpose of smaller size.

The foregoing preparation example can be produced by a method for preparing a chlorophyll solar cell comprising the following steps: a de-germination step 51, a coating protection step 52, a preparation of the first electrode step 53, a preparation of the conductive unit step 54, and a preparation. A second electrode step 55, and a finished product step 56. In the following description, although there is a sequence, it should be noted that the preparation of the first electrode step 53, the preparation of the conductive unit step 54, and the preparation of the second electrode step 55 do not need to be performed separately. , can be carried out at the same time, or according to the user's planning.

The germination step 51 removes the long carbon chain of chlorophyll, that is, the phytolith, to obtain the aforementioned chlorophyll material 31. After deplanting, the original chlorophyll becomes the chlorophyll, which is called chlorophyll material 31 in this case. Chlorophyll, which removes the phytolith, is also called chlorophyllin, and the extracted phytoplasm is called phytol. The actual operation procedure of the de-germination step 51 is as follows: 20.75 g of the broken leaves are taken, and an appropriate amount of ethanol is added to grind into a paste, and a part of the filtrate is obtained by filtration. The filtrate was placed in a 250 mL Erlenmeyer flask, maintained at a temperature of 45 ° C in the dark, and stirred with a magnetic stirrer for 30 minutes to sufficiently dissolve the chlorophyll contained in the crushed leaves into ethanol. Next, 30 g of a 25% strength sodium hydroxide solution was added, and the mixture was heated and boiled for 1 hour, and then left to cool to room temperature. After adding 200 mL of petroleum ether and stirring for 15 minutes, the mixture was allowed to stand for stratification, the supernatant liquid was removed, and the lower layer liquid was left for use. Next, hydrochloric acid was added to adjust the pH of the lower layer to 4, and then 100 mL of ethyl acetate was added thereto, and the mixture was stirred for 30 minutes, and then allowed to stand for stratification. Finally, the supernatant liquid was taken out by a separatory funnel, and the organic solvent was removed under reduced pressure to obtain a total of about 15 mL of the liquid containing the chlorophyll material 31. In the implementation, if chlorophyll without phytolith is directly taken as the chlorophyll material 31, it is of course possible to omit this step and directly perform the coating protection step 52 on the chlorophyll material 31.

The coating protection step 52 is to mix the chlorophyll material 31 obtained in the previous step with a first conductive material (aniline), and polymerize the first conductive material to cover the first conductive polymerization of the chlorophyll material 31. 32 (polyaniline) and an electrode semi-finished product. The operation procedure of the coating protection step 52 is as follows: 200 mL of 1N nitric acid solution is taken, poured into a 500 mL beaker, and stirred uniformly using a magnetic stirrer, and 0.05 mol of the first conductive material (about 4.65 g of aniline) is added. ), and a dopant (nitric acid). 15 mL of the liquid obtained in the degerization step 51 was poured into the beaker. Next, 11.4 g of ammonium sulfate was dissolved in 50 mL of a 1 N nitric acid solution, and gradually dropped into the beaker in 1 minute to start polymerization of the first conductive material and coating the green material. Material 31. After reacting for 90 minutes, filtration was carried out to obtain a portion of a filter cake. The filter cake is continuously washed with distilled water until the liquid after washing is colorless and transparent, and the pH is 6-7 to stop. The filter cake is dried in an oven to obtain the electrode semi-finished product. The electrode semi-finished product comprises the chlorophyll material 31 and a first conductive polymer 32 encapsulating the chlorophyll material 31.

The first electrode step 53 is prepared by forming the electrode blank and the third conductive polymer 33 (polyaniline) made of a third conductive material (aniline) into a first electrode 3. In the production, the electrode semi-finished product is co-extruded with the third conductive polymer 33 to obtain the first electrode 3. In the production process, an auxiliary agent may be added to improve the physical properties of the first electrode 3.

The step 54 of preparing the conductive unit is to first mix the tetraethoxy decane and water and ethanol in a ratio of 1:5:2, and then add 1 g, adjust the pH to 2 with 1 M hydrochloric acid, stir for 2 hours, and then separately. 0.5 g of iodine and potassium iodide were added, and the conductive unit 2 was obtained by drying in a 45-degree oven. In this step, the tetraethoxy decane is hydrolyzed and then condensed and polymerized to form a network structure under the catalysis of an acid. The ethanol used acts as a solvent and the water used is reacted with tetraethoxy decane. The formed network structure can leave the remaining water after the reaction in the network structure, and it is not suitable for drying for a long time, and the surface can be dried and the whole can be solidified and formed. In this step, a water absorbing agent may be further added to increase the amount of water that can be absorbed. The water absorbing agent may be, for example, PVA (polyvinyl alcohol).

The second electrode step 55 is prepared by first taking 4.5 mL of a second conductive material (aniline) into 100 mL of pure water and shaking with a shaker for 15 minutes to 20 minutes. Then, 1.8 g of the electrification material 41 (hexachloroplatinic acid) and 200 mL of ethylene glycol were added and stirred for 5 minutes to 10 minutes. After adjusting the pH to 8 with a sodium hydroxide solution, the mixture was further condensed and refluxed at 90 ° C for 90 minutes to obtain a colloid comprising the second conductive material and the electrification material 41. After the colloid was cooled in an ice water bath, 35 mL of hydrochloric acid having a concentration of 2 (mol/L) and 0.25 g of ammonium persulfate were added to start polymerization of the second conductive material into the second conductive polymer 42 and at 0. The second electrode 4 was obtained by stirring at ° C for 24 hours and then taking out.

The finished product step 56 is such that the conductive unit 2 is disposed between the first electrode 3 and the second electrode 4 to produce the chlorophyll solar cell.

The chlorophyll solar cell has the following effects: the first conductive material can be sufficiently mixed with the chlorophyll material 31 before being polymerized, and after the first conductive polymer 32 is polymerized, the chlorophyll material 31 can be coated and protected. The chlorophyll material 31 is not damaged when the third conductive polymer 33 is made into the first electrode 3, and thus can be processed by a common extrusion or co-ejection mass production method, and the multilayer coating and the stacked bed frame are omitted. The complex method of the house can achieve the second purpose of the invention for mass production.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and the simple equivalent changes and modifications made by the scope of the patent application and the patent specification of the present invention are It is still within the scope of the invention patent.

2‧‧‧Conducting unit

21‧‧‧ colloid

22‧‧‧ Electrolytes

3‧‧‧First electrode

31‧‧‧ chlorophyll material

32‧‧‧First conductive polymer

33‧‧‧ Third conductive polymer

4‧‧‧second electrode

41‧‧‧Electric materials

42‧‧‧Second conductive polymer

51‧‧‧Deplantation steps

52‧‧‧Wrap protection steps

53‧‧‧Preparation of the first electrode step

54‧‧‧Steps for preparing conductive elements

55‧‧‧Preparation of the second electrode step

56‧‧‧ Finished product steps

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: Figure 1 is a cross-sectional view of a conventional chlorophyll solar cell; Figure 2 is a chlorophyll solar cell of the present invention and a method of making the same A cross-sectional view of the embodiment; and Fig. 3 is an explanatory view of a manufacturing process of the embodiment.

51‧‧‧Deplantation steps

52‧‧‧Wrap protection steps

53‧‧‧Preparation of the first electrode step

54‧‧‧Steps for preparing conductive elements

55‧‧‧Preparation of the second electrode step

56‧‧‧ Finished product steps

Claims (7)

A chlorophyll solar cell comprising: a first electrode comprising a chlorophyll material and a first conductive polymer; a second electrode spaced apart from the first electrode; and a conductive unit disposed on the first electrode and the first Between the two electrodes, the mixture is prepared by mixing tetraethoxy decane and water with ethanol at a ratio of 1:5:2, adjusting the pH to 2, adding iodine and potassium iodide, and drying. The chlorophyll solar cell according to claim 1, wherein the second electrode comprises a current-carrying material and a second conductive polymer, wherein the electrifying material is selected from the group consisting of platinum compounds, rhodium, ruthenium, platinum-iridium alloys, and conductive carbon. Black powder, graphite powder, and any combination of the foregoing. The chlorophyll solar cell according to claim 2, wherein the first conductive polymer and the second conductive polymer are respectively selected from the group consisting of polyaniline, polyacetylene, polyaromatic ethylene, polythiophene, polypyrrole, polypyrrole And any combination of the foregoing. The chlorophyll solar cell of any one of claims 1 to 3, wherein the chlorophyll material is selected from the group consisting of chlorophyll-free, chlorophyll, and any combination of the foregoing. A method for preparing a chlorophyll solar cell, comprising: step A: mixing a chlorophyll material with a first conductive material, and polymerizing the first conductive material into a first conductive polymer covering the chlorophyll material, and preparing an electrode semi-finished product ; Step B: forming the electrode semi-finished product with a third conductive polymer mainly composed of a third conductive material as a first electrode; Step C: providing a conductive unit; Step D: providing a second electrode; and Step E Disposing the conductive unit between the first electrode and the second electrode; wherein, in the step C, the tetraethoxy decane and the water and the ethanol are mixed at a ratio of 1:5:2, and then adjusted. The pH is up to 2, and then iodine and potassium iodide are added, and the conductive unit is obtained after drying. The method for producing a chlorophyll solar cell according to claim 5, wherein the second electrode comprises a current-carrying material and a second conductive polymer, wherein the electrifying material is selected from the group consisting of platinum compounds, rhodium, iridium, platinum-iridium alloys, Conductive carbon black powder, graphite powder, and any combination of the foregoing. The method for producing a chlorophyll solar cell according to claim 5, wherein in the step A, the chlorophyll material is selected from the group consisting of chlorophyll-free, chlorophyll, and any combination of the foregoing.