Lithium batteries

The birth of pacemakers is a great achievement of scientific and technological development, pacemakers rely on the battery to provide electricity to work. Pacemaker to be implanted in the human body, the battery has special requirements, in addition to requiring full-time work, can not stop, but also stable, non-leakage, small size, small quality, long life, absolutely non-toxic. The first generation of batteries for pacemakers had a life span of only two years, and periodic replacements undoubtedly put patients' lives at risk and stress. Lithium metal can extend the life of a battery
, but lithium is very active, can burn in the air, in the event of water will produce
bio-chemical
reaction to produce flammable hydrogen. To use lithium, it is necessary to look for non-hydroelectric electrolyte systems. After extensive research on new solvents and materials for high-energy and long-life batteries, a solid electrolyte suitable for lithium metal, iodine, was finally found. Lithium-iodine battery has been used
biomedical
, its service life of more than 10 years. Lithium-iodine batteries are less powerful and useful for pacemakers. But such batteries are not suitable for other purposes, such as artificial kidneys and artificial hearts, which require more powerful batteries, which require further research and development.