| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method of evaluating electrode for battery capable of easily and simply observing and evaluating change of the state of activator with high space resolving power. <P>SOLUTION: Surface of electrode is scraped by irradiating ion beam, image of drilled face of the activator is observed by a scanning ion microscope (SIM), and a property of the electrode is evaluated on the basis of contrast of the activator in observed SIM image. Preferably, the electrode is an anode of lithium secondary battery or nickel-hydrogen secondary battery. Especially, it is preferable that the anode, containing activator particles, is that for a lithium secondary battery having activator layers between particles, on which metallic material with low lithium compound forming property is deposited. <P>COPYRIGHT: (C)2007,JPO&INPIT |
