Electrochemical test cells are made with precision and accuracy by adhering an electrically resistive sheet having a bound opening to a first electrically conductive sheet. A notching opening is then punched through the electrically resistive sheet and the first electrically conductive sheet. The notching...http://www.google.com.hk/patents/US8182636?utm_source=gb-gplus-share專利 US8182636 - Electrochemical cell and method of making an electrochemical cell
