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Nickel-cadmium (nicad) battery

Nickel-cadmium (nicad) battery is a type of batteries described as secondary means they recharged.  Such rechargeable battery used in many small appliances; involves oxidation of cadmium and reduction of nickel oxyhydroxide (NiO(OH)). During the normal use and maintenance of a battery system, they are neither destroyed nor dissipated nor do they emit any harmful substances. Depending on system sealed or vented? In case the batteries sealed zero-emission happening during normal use and maintenance. However, life-cycle analysis of rechargeable batteries are difficult to measure because unknown factor calculating the charging process if the energy source comes from fossil or renewable energy.

Nevertheless, the important issue is how to handle battery and appliances for disposal In a life cycle impact analysis of battery systems, regardless of composition, performance and whether they are rechargeable, it is clearly the last disposal of the battery which determines its major environmental and human health impact. Batteries can in theory be high-grade recycled. Also depending on the factor of application batteries were in use.
Can  batteries and application be separated easily into:

  • Organic group (upper crust of earth)   
  • Metals  (deep down earth) 

It includes many difficulty of reducing some of the battery metal oxides present in these systems. For example, anywhere from 10% to 20% of the total weight of nickel metal hydride batteries might be lost in the slag during the recycling of these batteries due to presence of very reactive metals (chromium, aluminum, magnesium, vanadium, zirconium, titanium, rare earth elements) which are strong oxide formers and very difficult to reduce. See also Alkaline battery, Nickel Cadium (nicad) battery and heavy metals Eco Fashion Dictionary.


POSITIVE AND NEGATIVE EFFECTS OF BATTERY


PRO

  • For heavy-duty use
  • High mechanical strength
  • High efficiency charge
  • Charge cycle: 500 times
  • Easy to recycle

CONCERNS

  • Low energy
  • Memory effect
  • Toxicity
  • High self-discharge espec.in sealed cells
  • More expensive than Ni–Cd

APPLICATIONS

  • Portable OA equipment
  • Portable AV equipment
  • Power tools
  • Medical instruments
  • Stationary applications
  • Space applications

  • Used Battery Collection and Recycling, Edited by G. Pistoia. Published by Elsevier Science 2001
  • Battery operated devices and systems. From portable electronics to industrial products,  by G. Pistoia. Published by Elsevier 2008

ECO-FASHION-DENIM AND DIAGRAMS DICTIONARIES OVERVIEW

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