Cathode

专利摘要:
Cathode, working with an alkaline medium, has >=1 surface made of a compsn. comprising (a) Ni, Co, Fe, Cu or Zn and (b) Ni, Co, Fe, Cu, Zn, ti, Mo, W, Mg, Mn, Nb, V, Ta,B, the rare earth metals and their hydrides. Esp. used for electrolysis of alkali chlorides. The cathode exhibits reduced overvoltage without prohibitive extra production and operating costs being needed. Pref. the surface comprises a binary cpd. formed between metals of the two gps. Alternatively the cathode has >=1 surface coated with a non-stoichiometric compsn. of formula AxByO2 of tungsten bronze type, where x = 0-1. Pref. A is Na and the B is selected from the second group of metals above and is esp Ti. Na ratio is 2-2.5. The compsn. is mixed the metallic cpd. in amount such that the ratio of the metal of the first group above to the non-stoichiometric cpd.
公开号:SU831082A3
申请号:SU762375459
申请日:1976-07-08
公开日:1981-05-15
发明作者:Равье Доминик；Гробуа Жан
申请人:Рон-Пуленк Эндюстри (Фирма)；
IPC主号:

专利说明:

The invention relates to cathodes used in the electrochemical production of chlorine and alkali or alkali metal chlorates. A cathode for the electrolysis of an alkaline chloride chloride solution made of cable 1 is known. A disadvantage of such a cathode is the high overvoltage of hydrogen evolution, which leads to a significant power consumption during the electrolysis process. Also known is a cathode for the electrolysis of an alkali metal chloride solution made of an alloy of nickel or cobalt with smolybdenum or tungsten 2. When using this cathode in the initial period of the electrolysis process, the amount of overvoltage of hydrogen evolution is insignificant. However, over time, the magnitude of the overvoltage increases, JITO leads to unnecessary power consumption. “The purpose of the invention is to reduce power consumption by reducing the amount of overvoltage of hydrogen evolution at the cathode. The goal is achieved in that the cathode for electrolysis of the alkali metal chloride solution is made of an alloy of nickel or cobalt with titanium. When using the proposed cathode, a low amount of hydrogen evolution overvoltage is observed, and this value remains constant during the entire period of the electrolysis process. When conducting comparative tests of the known and proposed cathodes, the following overvoltage values presented in the table were obtained. Thus, the magnitude of the overvoltage of the proposed cathode is lower than the known value, it quickly stabilizes and then remains almost constant in time.
Proposed
Ti-Ni
ten
110
110

权利要求:
Claims (1)
[1]
1. Yakimenko L.M. Electrolyzers with a solid cathode, M ,, 1966, s, 141,
2, Patent of Great Britain 959498, cl, C 7 B, 1964. (Prototype),

类似技术:

---

公开号 | 公开日 | 专利标题

---

US4080278A|1978-03-21|Cathode for electrolytic cell

---

US4105531A|1978-08-08|Plated metallic cathode

---

GB1580019A|1980-11-26|Process for electrolysing an alkali metal chloride

---

WO2002083992A3|2003-08-07|Electrolytic production of high purity aluminum using ceramic inert anodes

---

US4354915A|1982-10-19|Low overvoltage hydrogen cathodes

---

JPH0733597B2|1995-04-12|Cathode catalyst material used as cathode catalyst in electrolytic cell and cathode for electrolytic cell

---

SU831082A3|1981-05-15|Cathode

---

DE1207358B|1965-12-23|Cathode for an alkali chloride electrolysis cell operating according to the diaphragm process

---

US4414064A|1983-11-08|Method for preparing low voltage hydrogen cathodes

---

US4412893A|1983-11-01|Anode-assisted cation reduction

---

SE511040C2|1999-07-26|Alloys of Ti, Ru, Fe and O and their use for cathodes for the synthesis of sodium chlorate

---

DE1256993B|1967-12-21|Process for applying a chromide coating by contact deposition with, if necessary, additional external EMF on metal bodies

---

CA1130759A|1982-08-31|Electrolysis electrodes and methodof making same

---

Angel et al.1952|Influence of Impurities in the Electrolyte in Chlorine‐Caustic Electrolysis by the Mercury Cell Process: I. Investigation of the Influence of Metallic Impurities upon the Decomposition Rate of Sodium Amalgam

---

US3093514A|1963-06-11|Current generator cell

---

ES8607416A1|1986-05-16|Hydrometallurgical process for recovering silver from copper-electrolysis anode sludge

---

JP2629963B2|1997-07-16|High durability low hydrogen overvoltage cathode

---

EP0226291B1|1990-10-03|Method for extending service life of a hydrogen-evolution electrode

---

RU2009110234A|2010-09-27|METHOD FOR PRODUCING POWDERS OF METALS AND ALLOYS

---

FR2384036A1|1978-10-13|Supported cathode esp. for sodium chloride electrolysis - having iron or nickel | support plated with iron, cobalt or nickel

---

FR2350406A2|1977-12-02|Cathode for electrolysis cell - has at least one surface of a compsn. comprising two metals, esp. as an intermetallic cpd.

---

US4240887A|1980-12-23|Process of water electrolyis

---

US4222842A|1980-09-16|Electrode for electrolysis

---

JP2610937B2|1997-05-14|High durability low hydrogen overvoltage cathode

---

GB1199038A|1970-07-15|Improvements in process for Nickeliding, Cobaltiding and Ironiding Base Metal Compositions

同族专利:

---

公开号 | 公开日

---

AT343147B|1978-05-10|

---

BE843821A|1977-01-06|

---

FR2317377B1|1982-09-03|

---

FR2317377A1|1977-02-04|

---

ATA498476A|1977-09-15|

引用文献:

---

公开号 | 申请日 | 公开日 | 申请人 | 专利标题

---

---

EP0089141B1|1982-03-15|1986-12-30|Inco Alloys International, Inc.|Process for the electrolytic production of hydrogen|

---

US4487818A|1982-07-19|1984-12-11|Energy Conversion Devices, Inc.|Fuel cell anode based on a disordered catalytic material|

---

US4430391A|1982-07-19|1984-02-07|Energy Conversion Devices, Inc.|Fuel cell cathode|

---

DE3333504A1|1983-08-04|1985-02-14|BBC Aktiengesellschaft Brown, Boveri & Cie., Baden, Aargau|SURFACE LAYER FOR REDUCING OVERVOLTAGE ON AN ELECTRODE OF AN ELECTROCHEMICAL CELL AND METHOD FOR THE PRODUCTION THEREOF|

法律状态:

优先权:

---

申请号 | 申请日 | 专利标题

---

FR7521364A|FR2317377B1|1975-07-08|1975-07-08|

---