PL24696B1 - A method of producing large-area electrodes for electric leach batteries. - Google Patents
A method of producing large-area electrodes for electric leach batteries. Download PDFInfo
- Publication number
- PL24696B1 PL24696B1 PL24696A PL2469636A PL24696B1 PL 24696 B1 PL24696 B1 PL 24696B1 PL 24696 A PL24696 A PL 24696A PL 2469636 A PL2469636 A PL 2469636A PL 24696 B1 PL24696 B1 PL 24696B1
- Authority
- PL
- Poland
- Prior art keywords
- batteries
- leach
- electric
- producing large
- producing
- Prior art date
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- 239000003792 electrolyte Substances 0.000 claims description 7
- UIIMBOGNXHQVGW-UHFFFAOYSA-M NaHCO3 Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 3
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 150000007513 acids Chemical class 0.000 claims description 2
- 239000011149 active material Substances 0.000 claims description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 2
- 239000001569 carbon dioxide Substances 0.000 claims description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 2
- 238000005868 electrolysis reaction Methods 0.000 claims description 2
- 159000000001 potassium salts Chemical class 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 1
- 238000005363 electrowinning Methods 0.000 claims 1
- BFDHFSHZJLFAMC-UHFFFAOYSA-L Nickel(II) hydroxide Chemical compound [OH-].[OH-].[Ni+2] BFDHFSHZJLFAMC-UHFFFAOYSA-L 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- KGBXLFKZBHKPEV-UHFFFAOYSA-N Boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 210000002356 Skeleton Anatomy 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxyl anion Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 150000002927 oxygen compounds Chemical class 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate Nutrition 0.000 description 1
Description
Próby zastosowania sposobu formowa¬ nia elektrod wielkopowierzchniowych, zna¬ nego z fabrykacji olowianych akumulato¬ rów elektrycznych, do wytwarzania elek¬ trod do elektrycznych akumulatorów lugo¬ wych byly dotychczas bezskuteczne, po¬ niewaz przez utlenianie na anodzie nie udawalo sie na elektrodzie niklowej wytwo¬ rzyc zwiazków tlenowych niklu w ilosci do¬ statecznej i o dostatecznej przyczepnosci.Próby formowania zawodzily wskutek duzej biernosci metalu w elektrolicie zasa¬ dowym, a jego rozpuszczalnosci w zwyk¬ lym elektrolicie kwasnym.Wynalazek usuwa trudnosci wytwarza¬ nia elektrod wielkopowierzchniowych do lugowych akumulatorów elektrycznych przez formowanie elektrody z metaliczne¬ go niklu w elektrolicie zawierajacym w stezonym roztworze pierwszorzedowe so¬ le potasowcowe kwasów wielowartoscio- wych, zwlaszcza dwuweglan sodu; elektro¬ litem moze równiez byc roztwór boraksu z dodatkiem kwasu borowego. Te sole pierw¬ szorzedowe sa niezbedne, a wolny kwas nie wystarcza, gdyz przewodnosc elektrolitu bylaby zbyt mala. Dwutlenek wegla, ulatniajacy sie podczas elektrolizy w przy¬ padku stosowania dwuweglanu sodu, uzu¬ pelnia sie wedlug wynalazku przez dopro¬ wadzanie. Poza masa aktywna otrzymana przez formowanie, mase do plyty wprowa-dza sie wedlug wynalazku ponadto na dro¬ dze mechanicznej lub chemicznej.Jezeli w roztworze pierwszarzedowej soli potasowcowej kwasu wielowartoscio- wego zalaczyc plyte niklowa jako anode, to wkrótce po zamknieciu obwodu tworzy sie na plycie przylegajacy do niej czarny osad wodorotlenku niklowego. Jezeli sie postarac, by osad sie wydzielal miedzy bliskimi powierzchniami metalu lub w po¬ rach plyty porowatej, to warstwa wodoro¬ tlenku moze narosnac do takiej grubosci, ze powstanie plyta wielkopowierzchniowa z duza iloscia aktywnych zwiazków tleno¬ wych.Stwierdzono, ze wodorotlenki niklu wy¬ tworzone na anodzie sa szczególnie elek- troaktywne. Jeden gram takiej masy daje przy wyladowaniu akumulatora do 0,24 Ah, co jest bardzo bliskie wydajnosci teore¬ tycznej.Ilosc masy aktywnej, która mozna wy¬ tworzyc elektrolitycznie na elektrodzie niklowej, zalezy od ciezaru metalu elektro¬ dy, z którego masa zostala utworzona. Je¬ zeli metalu jest malo w stosunku do po¬ wierzchni i jezeli formowanie nie ma zbyt¬ nio oslabic pozostalego szkieletu, to jak juz wspomniano, poza masa otrzymana przez formowanie mozna na drodze mechanicznej wprowadzic do plyty gotowa mase, lub tez mozna na plycie wytworzyc mase ze sklad¬ ników, na drodze chemicznej. Otrzymuje sie wówczas dodatnie elektrody akumulatoro¬ we zawierajace w malej objetosci szczegól¬ nie duzo masy i mogace gromadzic szcze¬ gólnie duze ilosci energii. PLAttempts to use the method of forming large-area electrodes, known from the manufacture of lead electric accumulators, for the production of electrodes for electric long-life batteries have so far been unsuccessful, because oxidation on the anode has failed to produce on the nickel electrode. The process of forming failed due to the metal's high passivity in the base electrolyte, and its solubility in ordinary acid electrolytes. metal nickel electrodes in an electrolyte containing in a concentrated solution primary potassium salts of polyvalent acids, in particular sodium bicarbonate; the electrolyte may also be a borax solution with the addition of boric acid. These primary salts are necessary and the free acid is not enough as the conductivity of the electrolyte would be too low. According to the invention, the carbon dioxide which is volatilized during the electrolysis when sodium bicarbonate is used is replenished by feeding. In addition to the active material obtained by molding, according to the invention, the material is also introduced into the plate by mechanical or chemical means. black nickel hydroxide deposit adhering to it. If an effort is made to ensure that sediment is deposited between close metal surfaces or in the pores of the porous plate, the hydroxide layer may grow to such a thickness that a large-area plate with a large amount of active oxygen compounds is formed. It has been found that nickel hydroxides are ¬ formed at the anode are particularly electroactive. One gram of such a mass yields 0.24 Ah when the battery is discharged, which is very close to the theoretical capacity. . If the metal is low in relation to the surface and if the molding does not weaken the remaining skeleton too much, then, as already mentioned, apart from the mass obtained by molding, the finished mass may be mechanically introduced into the plate, or it may also be mass of ingredients, by chemical means. Positive battery electrodes are then obtained which contain a particularly large volume of mass in a small volume and are capable of storing particularly large amounts of energy. PL
Claims (3)
Publications (1)
Publication Number | Publication Date |
---|---|
PL24696B1 true PL24696B1 (en) | 1937-04-30 |
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