~33~ METHOD FOR MANUFACll~RE OF ELECIROD~ 1 rlr-D or ox This invention relates to a method for the Moe- faker of an electrode fox furriness an electrode i. substance or an electrode coating by thermal treatment of a liquid composition keynoting an electrode CONDO- next metal BACKGROUND OF I IN TON ~lectI~des are used on a commercial scale in various electrochemical processes such as elect trellises, electrolytic treatments, end galvanic cells. Electrodes of various types and modes for various applications have been manufactured. These electrodes are preponderantly in the o'er of insoluble solids Generally, metals or metal compounds such us oxides thereof which possess the activity and durability expected of any electrode are used either in the form of particles or deposited in the form of coatings on suitable substrates. Insoluble electrodes formed by coating a sub- striate ox metallic titanium with metal oxides - including platinum group metal oxides, for example, are widely used on a commercial scale for electrolysis of aqueous solutions such as of sodium chloride. electrodes formed of particles ox metals or metal oxides and electrodes formed by sistering such part dyes or molding such particles with suitable . , , . .. ; 2 I 1 binders have been use in electrolytes, electrolytic treatments, and galvanic cells. Electrodes of the types described above call be prepared by various educe. Among those methods, the , so-called thermal decomposition method Waco comprises the steps of preparing a liquid composition containing an electrode component metal and sub j eCtl~g this liquid composition decal, or applied ox a sup- striate, to a thermal trea-bme~t 'err cavorting the cQmpone~t metal into an electrode substance in the form of a metal or a metal oxide finds general acceptance as highly effective means. Generally in this particular method, a compost- lion containing a salt of a thermally decomposable electrode component metal and a solvent is ejected Jo thermal txeabme~t aye an elevated temperature of Betty 250 to 800C. Thermally d composable salts which can be used include chlorides, oxychlorides, Alec halides, resonates, amine, eke. of various electrode component metals. As solvents therefore water, hydrochloric acid, various alcohols, Tulane, and Bunsen have been suitably adopted (as disclosed in Japanese Patent Publication SHEA eon- responding to US. Patent 3,711,385 and Japanese Patent Application haid-Open SO 51(1976)-131475, for example). When the conventional composition for electrode production is subjected to a thermal treatment aimed 1 at removing the solvent through volatilization and unermally decomposing the salt of an electrode camp next metal into a corresponding metal, or further cor~ert~ng thy metal into a corresponding metal oxide, however, use electrode commute metal is o_ en ........ sir used it a large volume as volatilized in the form of a chloride in conjunction with the solvent results s issue problems including lowered product yield, Dodd product quality stability, and innately eD~ir~nme~tal pollution. As a measure, it has been proposed, where Sun is used as an electrode-coating component, for example, to use a sulfate ox Sun instead of a chloride of Sun (as disclosed in Japanese Patent Application Laid-Open SO 52(1977)-141489, fox example). This method is effective in lowering the loss of the Sun component by volatilization to a fair extent but it is not Sophie client at the present. Further, the danger due to use of sulfuric acid, a strong acid, is involved. With respect to the electrode components other than Sun, the aforementioned problems remain ye-t to be solved. Thus, it has been difficult to produce electrodes of various electrode components in a stable manner and ill high yields by the thermal decomposition method. SUMMARY OF THE INVENTION An object of this invention is to provide an easy method for the manufacture of an electrode ox s table quality in high yields. * it I 1 This invention provides a mud for ho menu- lecture of electrode for forming a electrode substance or an electrode coating by thermal treatment ox a liquid composition containing an electrode component siestas. this method comprises stubbly- ins the electrode component metal -by adding to the composition an organic compound possesci~g a lugged capable ox forming a cam~lex with a metal ion of the electrode component metal Thea i~v~ntio~ thoroughly fulfills the afQreme~- toned object by providing the method just descried end brings about an outstanding economic effect as described in detail below. D TAILED DESCRIPTION OF THE INVENTION thus invention is applicable equally effectively to the manufacture of an electrode which does not involve use of a substrate an to the manufacture of a electrode deposited in the form of a coating on a substrate. Where the electrode involves a substrate r Ann of the elec-troconductive and durable substrates of varying substances and shapes heretofore used in anodes and cathodes are used. For example, valve metals such as Tip Tax Nub, and Or are typical sub- striates for anodes and Fez Nix etc. are typical substrates for cathodes. Various electrode substances formed by thermal treatment can be produced to suit various applique- lions. They possess electrochemical catalytic property 3;3~ 1 and doublet and they are, generally, metals, metal oxides, or mixtures thereof in form. To form such Zen electrode substance in a free state so deposited on a substrate a Lydia comDositio~ kowtowing a Corey- pounding elects community metal is prepared an subjected to thermal Crete L held in a vessel or deposited on a Swilled substrate. As already decried whey Lye comDositicn of the conventional approach is used Ed subjected to the thermal treat- eta a elevated timepiece o' bout 25~ to 8Q0C, the electrode component is not retained it the form ox metal or metal oxide or deposited fast on the sub- striate but is readily volatilized into a chloride, for example, and diffused in a large amount into the ambient air possibly to entail difficulties such as lowered yield of product and impaired stubbly of product quality. Among various electrode components, Al, Sun, Sub, ye, Bit Gay In, Tip Or, Tax Hi, V, Mow Rut Pod, If, etc. exhibit the aforementioned inclination conspicuously because the temperatures at which they are converted into their oxides are higher Han the temperatures at which their chlorides are volatilized. It has now been found that when the above- described composition for top manufacture of an electrode incorporates therein an organic compound as a ligand capable of forming a complex with a metal ion, the difficulties described above are eliminated because the amount of the above-described readily I 1 volatilized electrode component which is volatilized and diffused during the thermal treatment is decreased to a notable extent. This knowledge has led to an achievement of the present i~ventio~. The reason for this effect is not complex clear at preset. While not desiring to ye bound, it is postulated that the ion of the electrode compute Moe in the Lydia composition combines with the ligand through formation ox a complex and stability is achieved. During the course of the thermal treat- mint, volatilization and diffusion are prevented-and, instead, the electrode substance such as a metal or a metal oxide is converted in a high yield. The organic compound, for use in this invention, must act as a ligand capable of forming a complex with a metal ion. Various organic compounds meet this requirement. They are acceptable for this invention as long as they are capable of foxing a complex with the electrode component metal in ordinary liquid compositions such as -those of aqueous solutions or aqueous alcohol solutions. This invention is not limited to any type of organic compound. Generally, an organic compound which volatilizes or decomposes at a temperature below about 300C and a metal or metal oxide is produced from the metal ion combined therein is suitable. From this point of view, the organic compound generally preferably has a small number up to 12, for example) of carbon atoms because ... . 7 ~7~3;~3~7~ 1 volatilization, decomposition, and oxidation proceed quickly when the number of carbon atoms is small. An organic compound of a large number of carbon atoms, however, can be rendered effectively used by supplying an mule amount ox ooze to ye reaction system sufficient to ensure 2 Huron combustion of the organic compound Particularly desirable examples ox organic come pounds acting US a ligand capable of worming a complex with a metal ion as describe above are set forth below. It should be noted, however, that this invent lion is not limited to these organic compounds. Suitable examples of organic compounds include organic acids possessing a carboxyl group, such as formic acid, hydroxycarboxylic acid, Masonic acid, tartaxic acid, lactic acid, succLnic acid, ascorbic acid, citric acid, salicylic acid, dihydroxybenzoic acid, phthalic acid, aluminon, saccharin acid, and hydroxynaphthalene-carboxylic acid and derivatives thereof; carbonyl compounds such as acetylacetone and Arabians; and compounds possessing a finlike hydroxyl group such as catcall, pyrogallol, hydroxy- benzaldehyde, nitrophenol, and nitrosonaphthol. Suitable organic compounds also include come pounds possessing a they'll group, a xanthate group, a thioamido group, a thisketone group, and a sulfonyl group, such as thioglycolic acid, thiomaleic acid, 8 ~q~333~ 1 dithioacetic acid, dihydroxybenzene sulfonic acid, mercaptosuccinic acid, ni~rosodihydroxyben2ene sulk ionic acid, sulfosalicylic acid, dihydro~ynaDhthalene sulfo~ic acid, dihydroxyan~hraquinone sulfonic acid, S m2~eonl~rile Delco acid, aminothio~he~ol, depth- salicylic acid, dithizone, and ~iethyldithioca~bamic acid. Suitable or n; C compounds further include come pounds possessing an amino acid group, an amino group, an amino group, a imido group, a pvridyl group, an imidazolyl group, a thia~olyl grout, and a nutrias group such as ethyl amine, ethylenediamine, ethanol- amine, Gleason, ala nine, succinimide, glutamic acid, hydroxyglutamic acid, glycylalanine, salicyl~ldoxime, ethylenediaminetetraacetic acid, pardon aminopyri- dine, pyxidinecarboxylic acid, picoli~ic acid, imida~ zone, thiazole, and cupferron and thiocyanic acid compounds. This invention is further illustrated by refer- once -to the hollowing non-limiting examples. Unless otherwise indicated herein, all parts, percents, ratios and the like are by weight. eye . A liquid composition was prepared by thoroughly mixing lo ml of an aqueous solution of 0.5 g of chloroplatinic acid as Pi, 1.1 g of iridium chloride as If, and 0.5 g of titanium trichloride as To with - .... . .. , . .. . ..... .. . 9 ~333 clue 1 I ml of an aqueous solution containing 1. 7 g of stuns chloride as Sun, and 10 g of ascorbic acid. In a crucible, the liquid composition was eel- coned a. 550C to obtain a residue preponderantly in the metal oxide form. This residue WIGS analyzed by a ; furriest Roy method to determine the yields of c~m~o~ent metals ox -the produced substance relative to the strung materials. The results obtained are shown in Table 1 below In a comparative e~amDle, a composition obtained by mixing 10 ml of an aqueous solution of 0.5 g of ~hloroplati~ic acid as Pi, 1.1 g of iridium chloride as If, and O . 5 g ox titan us trichloride as To with 30 ml of a 20% hydrochloric acid solution containing 1.7 g ox stuns chloride as Sun and 10 ml of is- propel alcohol was similarly calcined Table 1 Yield of Component Metal (%) If it 511 Example 1 99 98 96 98 Comparative Example 198 I 71 59 Example 2 As a substrate, a commercially available pure titanium plate, 50 mm x 50 mm x 3 mm thickness, was degreased.with acetone and pickled with oxalic acid The same liquid composition. as described in Example 1 was coated on the substrate with a brush, dried at 10 'I 1 room temperature (about 20-30C), and heated at 550C for 10 minutes in an electric oven with forced circus lotion of air ~herethroush. By performing the steps of application and calcining ox the liquid composition ion a total ox 20 cycles, an electrode having a Coat . in 3 in thickness was produced. In a comparative example the same liquid composition as described in Comparative Employ 1 was used similarly to produce on electrode the electrodes were analyzed by a ~luorescP~t X-ray method to determine the ratio of electrode coating component metal retained on the substrate The results obtained are shown in Table 2 below. Table 2 Ratio of Component Metal Retained Jo __ . _ , ... .. .. . . . . .... _ _. _ Pi If Sun Example 2 99 99 98 Comparative Example 2 99 71 45 note) The data on the To component are omitted because the determination of this component was difficult due to the influence of the To component in the substrate upon which the coating was placed. Icon be seen prom the results of Example 1 and Example 2 that when ascorbic acid as a ligand capable of forming a complex with a metal ion was added in accordance with thy method of this invention to the liquid composition, the electrodes were obtained in high yields and high retention ratios because 333~ 1 virtually no loss occurred in any of the electrode component metals as compared with the electrodes ox Comparative Examples 1 and 2. Exhumed 3 Alkyd commas ion was prepare my Managua 0 5 g ;. ox chloroplatinic acid as Pi, 0.55 g of iridium color- ire as I-, 1 5 g of aqueous tantal~ pentac310ride solution as pa, 0.2 g of cobalt chloride as Co, and 0 55 g of stoic chloride as Sun wit h 20 my Of 20% bndrochloric acid, 10 ml ox buttonhole, and g ox pyrogallol In a comparative example, a similar. liquid come position was prepared using the procedure just described, except that the addition of pyrogallol was omitted. These liquid compositions were colonnade in a crucible as in Example 1. The results obtained are shown in Table 3-1 below. They were also applied on a To substrate as in Example 2. The results obtained are shown in Table 3-2 below. Tale 3-1 Yield of Component Metal (%~ Pi If To Co Sun Example 3-1 99 99 97 99 98 Comparative Example 3-1 99 73 36 98 31 33~ 1 Table 3-2 Ratio of Component Metal Retained (%~ Pi sir To Co Sun . E~amD1~ 3-2 go I 99 98 99 CO~aDara~Ve Ega3nple 3-2 98 62 23 98 2 . Eagle _ wreck coating solutions were prepared my Maxine I g of ruthenium chloride as Rut 3 g of Pal tedium chloride as Ed, 12 g Or sta~nlc chloride as Sun, end I y of antimony chloride severally with I 200 ml OX isopropyl alcohol, 220 ml of pure water, and 90 g of pardon pentacarboxylic acid (Example 4), (2) 400 ml of isopropyl alcohol and 20 ml of concern- treated hydrochloric acid (36%) (Comparative Exam- pie Al and (3) 400 ml of isopropyl alcohol and 20 ml of concentrated sulfuric acid (98%) (Comparative Example 4~2). The liquid compositions described above were applied to substrates of To by following the procedure Of Example 2, except what the calcining temperature was changed to 570C to obtain electrodes. These electrodes were tested for retention ratios of combo- next metals. The results obtained are shown in Table 4 below. 13 ~33~ 1 Table 4 Ratio ox Component Metal Retained (~) _ _ _ _ Rut Pod Sun Sub gel 1 I 9 59 98 Comparative E~amDle 4-1 92 40 12 23 C~mDara.iVe Example 4-2 go 82 81 I . EXaIrLD1e livid coating composition was prepared by adding 40 g ox 8-hydro~yquinone-5-sulfonic acid to an aqueous hydrochloric acid solution 15%) containing 1.40 g of chloroplatinic acid as Pi, 0.45 g of pall- drum chloride as Pod, 9.5 g of stunk chloride as Sun, and 0~85 y of bismuth chloride as By and diluting the resultant solution with pure water to about 100 ml. The coating composition so obtained was applied on the same type of titanium plate as in Example 2 with a brush, dried at 120C for 5 minutes, and eel- coned at 500C for 20 minutes. This procedure was performed for a total of 20 cycles -to produce an electrode. The coating composition and the electrode obtained by applying this composition on the Tao substrate were analyzed to determine -the percentage composition of electrode component metals. The results obtained are shown in Table 5 below. .. .. . . . . .. I I 1 Table 5 Com~osltion of Component Metals (mow%) . P-t Pod Sun By Liquid Composition aye 83.7 4.27 Elk Dusted 7.74 .37 80.4 _.36 . . . . It can be see from the results it Table 5 that, if produced by the method of this invention, the electrode deposited on the substrate had substantially the some composition of component metal as the coating composition, 1ndicati~s that the electrode deposited on the substrate retained the component metals at high retention ratios because virtually no volatilization occurred during ha course of heating and calcining. Example 6 A liquid coating composition was prepared by adding 50 g of aluminon to 5.15 g of rhodium chloride as Rho 2.53 g of rhenium chloride as Rut 2.5 g of antimony chloride as Sub, 1.5 g of aqueous hydrochloric acid solution (20%) of tantalum pentachloride as Tax and 3.5 g of aqueous hydrochloric acid solution I of zirconium chloride as Or and diluting the resultant solution with pure water to about 100 ml. From this coating composition, an electrode was produced by following the procedure of Example 5. The coating composition and the electrode depose tied on the substrate were analyzed to determine the . , . .. .. I, .. . - ~L2~33~ 1 percentage com~osltion of component metals. The results obtained are shown in Table 6 below Table 6 Condos lion of Co onto Metals (molt) Rho u Sub To Or r~Guid ComposiLlo~ 27 2 13.6 11.1 27.2 20.9 Electrode Deposited 27 a 14.2 10 7 26.9 20.8 . As described above, the method ox this invention enlace a electrode to be manufactured in a high yield and hush retention Russ ox thy cump~n~t metals by preventing the possible loss ox the come potent metals by vaporization during the curse of heat treatment. It also permits an electrode of the roared composition to be manufactured in a stable manner and with high repeatability. Thus, an elect trove of high quality can be manufactured with ease by the present invention. While the invention has been described in detail and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that various changes an modifications can be made therein without departing from the spirit and scope thereof. . ......... .. . . . , .