Patent ID: 8822073

Claim:
A method for detecting a counterfeit electrochemical device, the method comprising: a) introducing inorganic particles or aggregates onto a surface of a cathode, a surface of an anode, or surfaces of a cathode and an anode, wherein the inorganic particles or the aggregates are included in an organic/inorganic composite which serves as a separator, and wherein a spectrum of the inorganic particles or the aggregates follows a predetermined rule that identifies the origin of the organic/inorganic composite and distinguishes the organic/inorganic composite from a counterfeit organic/inorganic composite introduced onto a surface of a cathode, a surface of an anode, or surfaces of a cathode and an anode manufactured by a third party; b) observing the spectrum of the inorganic particles or the aggregates with a sensor; and, c) checking whether the observed spectrum conforms to the predetermined rule.