PROBLEM TO BE SOLVED: To provide a chemical cell capable of stably imparting a desired electric potential difference over a long period when contacted with an organism and a generating method of the electric potential difference using this chemical cell.SOLUTION: This chemical cell has any element or layer of (1) a joining element having a first layer including a conductor such as magnesium and a second layer including sheet-like fiber, (2) a second joining element having a third layer including a powdery or fibrous carbon material and a binding material and a fourth layer including sheet-like fiber or (3) a fifth layer including a powdery or fibrous carbon material and a binding material, and generates the electric potential difference of 10-1500 mV between the other surface of the element and the organism, when an exposed surface contacts with the organism, by exposing a predetermined layer in one surface of the element.COPYRIGHT: (C)2008,JPO&INPIT【課題】生体と接触させた場合に所望の電位差を長期にわたって安定的に与えることが可能な化学電池およびそれを用いた電位差の発生方法を提供すること。【解決手段】(1)マグネシウム等の導体を含有する第1の層と、シート状繊維等を含有する第2の層とを有する接合素子、(2)粉状または繊維状の炭素材料及び結合材を含有する第3の層と、シート状繊維等を含有する第4の層とを有する第2の接合素子、あるいは、(3)粉状または繊維状の炭素材料及び結合材を含有する第5の層、のいずれかの素子または層を有し、該素子の一方面において所定の層が露出しており、該露出面が生体と接触したときに、素子の他方の面と生体との間に10~1500mVの電位差を発生させる化学電池。【選択図】図1
