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PCE
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DIFF Subgroup
H01M 4/52

of nickel, cobalt or iron

Introduced: July 1974

Full Title

Electrodes > Electrodes composed of, or comprising, active material > Selection of substances as active materials, active masses, active liquids > of inorganic oxides or hydroxides > of nickel, cobalt or iron

CPC subdivides this area 3x more granularly than IPC with 2 additional codes.

2 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

IPC defines codes here since 2010.

Child Classifications

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  • H01M 4/521 CPC only CPC only
  • H01M 4/523 CPC only CPC only
  • H01M 4/525 of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy since 2010 IPC+CPC Available in IPC and CPC