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Newsroom Careers


Prince is a world-class producer of engineered minerals and specialty chemicals for niche applications, adding value from source to solution.

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Prince’s expertise makes us a leading supplier for multiple performance-critical applications.

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Prince manufactures a wide range of engineered mineral and specialty chemical products to meet the needs of a variety of applications.

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Innovation is central to Prince’s business. From laboratory to customer process, innovation is about solving customer problems to deliver higher quality solutions ahead of the competition.

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Electrolytic Manganese Dioxide (EMD)

Prince is a leading, global supplier of high-performance Electrolytic Manganese Dioxide (EMD). Prince’s line of EMD products has evolved to respond to new trends in the international battery materials market. With dedicated facilities in the U.S. and in China, Prince’s EMD products are used as an active ingredient in the cathode mix of primary alkaline batteries and as a raw material for LMO cathode production.


Prince’s new line of EMD products was developed to help battery producers meet new market and consumer trends such as:

Higher energy density

  • Better compaction
  • Consistently high quality due to stringent process controls

Improved battery electrochemical performance and longer shelf-life

  • Best-in-class consistency with low lot-to-lot variation of physical and chemical characteristics
  • Optimized products with a range of surface areas for each discharge-performance requirement

Faster production lines

  • Improved processability / reduced scrap costs
  • Ease of compaction
  • Extended tool life

Low environmental impact

  • Highest standards of environmental management within the EMD industry
  • Lowest rate of emissions and byproduct generation thanks to high quality raw materials and best-in-class production processes
  • ISO 14001 certified

Want to know more? Please contact us for detailed information on our product solutions or to speak with us about product recommendations. Get more information and advice from our team of experts!

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Our line of products, based on patented and patent-pending technologies, targets multiple market segments and customer performance requirements:

  • EAB 211
  • P3A
  • Z100
  • GK-A II
  • GK-A III
  • GK-H

In addition to EMD for alkaline batteries, Prince also manufactures EMD specifically designed for LMO li-ion batteries.

Electrolytic Manganese Dioxide EMD

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