The scientists that revealed the "world's first solar battery" last year are now ... This has been replaced with water as the solvent and lithium iodide as the salt, which offers low-cost ...

The pacemaker leads have a lifespan of approximately eight to 10 years. In modern batteries, a layer of semisolid lithium iodide separates the anode and the cathode. Pacemakers with no telemetry ...