公开(公告)号：US3650832A

公开(公告)日：1972-03-21

申请号：US3650832D

申请日：1969-08-20

Applicant: ESB INC

Inventor： TVARUSKO ALADAR

IPC: H01M4/54 ,  H01M10/32 ,  H01M35/02

CPC classification number: H01M4/54 ,  H01M10/32

Abstract: Battery grade divalent silver oxide (AgO) active material containing an additive selected from mercury, selenium, tellurium and combinations of mercury with lead or tin to provide improved electrical conductivity and/or improved stability in aqueous alkaline electrolyte, without substantially adversely affecting either property. The additive is present in the divalent silver oxide active material in amounts ranging from about 0.1 to about 5 percent by weight of silver, in both ionic and metallic form, in the active material. Instead of being incorporated into the divalent silver oxide active material, the selenium, tellurium, mercury-lead and mercury-tin additives are also effective when incorporated into the alkaline electrolyte of a battery employing divalent silver oxide positive electrodes. The preferred method for incorporating the additives into the divalent silver oxide active material is by chemical coprecipitation during its preparation, though they can also be physically admixed therewith. The divalent silver oxide active material contains at least 50 percent by weight of divalent silver oxide (AgO) with the balance of the active material comprising monovalent silver oxide (Ag2O) and metallic silver.

Abstract translation: 电池级二价氧化银（AgO）活性材料，其含有选自汞，硒，碲的添加剂以及汞与铅或锡的组合，以提供改善的导电性和/或在碱性电解质水溶液中提高稳定性，而不会对任何一种性质产生不利影响。 添加剂以活性材料中离子和金属形式的约0.1至约5重量％的银存在于二价氧化银活性材料中。 代替掺入二价氧化银活性物质中，硒，碲，汞铅和汞锡添加剂在掺入使用二价氧化银正电极的电池的碱性电解质中时也是有效的。 将添加剂掺入二价氧化银活性物质中的优选方法是在其制备过程中通过化学共沉淀，尽管它们也可以与其物理混合。 二价氧化银活性物质含有至少50重量％的二价氧化银（AgO），剩余的活性物质包含一价氧化银（Ag 2 O）和金属银。

公开(公告)号：GB1178918A

公开(公告)日：1970-01-21

申请号：GB595767

申请日：1967-02-08

Applicant: ESB INC

Inventor： TVARUSKO ALADAR

IPC: H01M4/54 ,  H01M10/26

Abstract: 1,178,918. Argentic oxide electrodes with additives. ESB Inc. 8 Feb.. 1967, No. 5957/67. Heading H1B. An alkaline electric cell or battery having at least one argentic oxide positive electrode contains as an additive in the electrode or electrolyte 0À1-5 wt. per cent, based on the weight of silver in the positive electrode, of a compound of Hg, Ge, Si or Te. Each additive may be used alone or mixed with one or more of the others, or with a compound of Sn or Pb. These additives improve the electrical conductivity and/or the stability in aqueous alkaline electrolyte of the argentic oxide. The additive may be incorporated in the argentic oxide by coprecipitation, e.g. by adding the metal nitrate to AgNO 3 solution, or in anion form to aqueous NaOH/K 2 S 2 O 8 before these solutions are mixed. Alternatively, the free metals may be mixed with the AgO, or soluble compounds may be dissolved in the electrolyte. In Examples 1-3 and 5-7 electrodes containing 0À1 or 1% of additive as the element relative to Ag are prepared by the coprecipitation method, using Hg, Si, Te and Ge alone, and Hg/Pb, Ge/Pb, Hg/Sn and Ge/Hg mixtures (and Sn, Pb and Sn/Pb additives for comparison); the compounds are added as Hg(NO 3 ) 2 and Pb(NO 3 ) 2 to the AgNO 3 and as Na 2 SiO 3 , Na 2 TeO 3 Na 2 - SnO 3 and GeO 2 to the NaOH/K 2 S 2 O 8 . In Example 4 HgO is milled with the AgO, and in Example 8 HgO and PbO are dissolved in the electrolyte.