{"id":2621,"date":"2024-08-24T12:47:32","date_gmt":"2024-08-24T12:47:32","guid":{"rendered":"https:\/\/workhouse.sweetdishy.com\/?p=2621"},"modified":"2024-08-24T12:47:33","modified_gmt":"2024-08-24T12:47:33","slug":"comparison-between-lead-acid-and-nickel-iron-alkaline-cell","status":"publish","type":"post","link":"https:\/\/workhouse.sweetdishy.com\/index.php\/2024\/08\/24\/comparison-between-lead-acid-and-nickel-iron-alkaline-cell\/","title":{"rendered":"COMPARISON BETWEEN LEAD\u2013ACID AND NICKEL\u2013IRON ALKALINE CELL"},"content":{"rendered":"\n

The two cells can be compared on the basis of the following particulars (Table 4.2):<\/p>\n\n\n\n

Table 4.2  Comparison of Lead-Acid and Nickel-Iron Cell<\/strong><\/p>\n\n\n\n

\"img\"\/<\/figure>\n\n\n\n
\"img\"\/<\/figure>\n\n\n\n
4.15  NICKEL\u2013CADMIUM CELL<\/h5>\n\n\n\n

It was developed by a Swedish scientist Waldemar Jungner in 1899.<\/p>\n\n\n\n

4.15.1  Construction<\/h4>\n\n\n\n
Cathode <\/td>\u2013 <\/td>Ni(OH)4<\/sub> <\/td><\/tr>
Anode <\/td>\u2013 <\/td>Cd (Cadmium)<\/td><\/tr>
Electrolyte <\/td>\u2013 <\/td>KOH (Potassium hydroxide) of specific gravity 1.2.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Its construction is similar to a nickel\u2013iron cell with the difference that its extreme plates are positive instead of negative as in case of nickel\u2013iron cell. Moreover, in this case, the positive plates are electrically connected to the container.<\/p>\n\n\n\n

4.15.2  Chemical Action during Discharging<\/h4>\n\n\n\n
At anode<\/td>\u2013<\/td>Cd + 2OH \u2192 Cd(OH)2<\/sub><\/td><\/tr>
At cathode<\/td>\u2013<\/td>Ni(OH)4 <\/sub>+ 2K \u2192 2KOH + Ni(OH)2<\/sub><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

No change in the specific gravity of the electrolyte.<\/p>\n\n\n\n

4.15.3  Chemical Action during Recharging<\/h4>\n\n\n\n
At cathode<\/td>\u2013<\/td>Ni(OH)2<\/sub> + 2OH \u2192 Ni(OH)4<\/sub><\/td><\/tr>
At anode<\/td>\u2013<\/td>Cd(OH)2<\/sub> + 2K \u2192 Cd + 2KOH<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

The two electrodes regain their original chemical composition.<\/p>\n\n\n\n

<\/a>4.15.4  Electrical Characteristics<\/h4>\n\n\n\n
    \n
  1. EMF\u2014fully charged cell\u20141.4 V which decreases to 1.3 V rapidly. Average value 1.2 V which decreases to 1.0 V when fully discharged<\/li>\n\n\n\n
  2. Internal resistance\u2014very low, less than even lead\u2013acid cell<\/li>\n\n\n\n
  3. Efficiency\u2014Ampere-hour: about 80%; watt-hour: about 65%<\/li>\n<\/ol>\n\n\n\n

    4.15.5  Advantages<\/h4>\n\n\n\n
      \n
    1. Very long active life nearly 20 years<\/li>\n\n\n\n
    2. Can be stored in any condition, as there is no change in the specific gravity of the electrolyte.<\/li>\n\n\n\n
    3. These cells can be charged in a short period (one hour)<\/li>\n<\/ol>\n\n\n\n

      4.15.6  Disadvantages<\/h4>\n\n\n\n
        \n
      1. It is very costly<\/li>\n\n\n\n
      2. Low average emf and therefore, more cells are required for a particular voltage<\/li>\n<\/ol>\n","protected":false},"excerpt":{"rendered":"

        The two cells can be compared on the basis of the following particulars (Table 4.2): Table 4.2  Comparison of Lead-Acid and Nickel-Iron Cell 4.15  NICKEL\u2013CADMIUM CELL It was developed by a Swedish scientist Waldemar Jungner in 1899. 4.15.1  Construction Cathode  \u2013  Ni(OH)4  Anode  \u2013  Cd (Cadmium) Electrolyte  \u2013  KOH (Potassium hydroxide) of specific gravity 1.2. Its construction is similar to a nickel\u2013iron cell with the […]<\/p>\n","protected":false},"author":1,"featured_media":2597,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[406],"tags":[],"class_list":["post-2621","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-batteries-basic-for-electrical-eng"],"jetpack_featured_media_url":"https:\/\/workhouse.sweetdishy.com\/wp-content\/uploads\/2024\/08\/battery-2.png","_links":{"self":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts\/2621","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/comments?post=2621"}],"version-history":[{"count":1,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts\/2621\/revisions"}],"predecessor-version":[{"id":2622,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/posts\/2621\/revisions\/2622"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/media\/2597"}],"wp:attachment":[{"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/media?parent=2621"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/categories?post=2621"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/workhouse.sweetdishy.com\/index.php\/wp-json\/wp\/v2\/tags?post=2621"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}