| 초록 |
A primary or secondary battery, which is usually used as a power source in our daily life, inevitably suffers a self-discharge problem when it is used after long-term storage. A reserve battery, or a device which is inert until its activation by injecting an electrolyte for the purpose of immediate use, can be an alternative choice to avoid the self-discharge problem after long-term storage. We report a foldable reserve aluminum-air battery activated by diverse aqueous electrolytes such as seawater as well as NaCl and KOH solutions. The foldable battery was maded of a sheet of aluminum and a paper electrode composed of cellulose and carbon nanotube, including a separator. The injection of the NaCl solution led to approximately 0.7 V while the KOH solution resulted in a much higher voltage of 1.3 V than the NaCl electrolyte. Furthermore, folding the battery did not degrade the discharge performance, compared with an unfolded battery. |
