Lithium polymer cells have evolved from lithium-ion and lithium-metal batteries . The primary difference is that instead of using a liquid lithium -salt electrolyte (such as LiPF 6 ) held in an organic solvent (such as EC / DMC / DEC ), the battery uses a solid polymer electrolyte (SPE) such as poly(ethylene oxide) (PEO), poly(acrylonitrile) (PAN), poly(methyl methacrylate) (PMMA) or poly(vinylidene fluoride) (PVdF).
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Lithium-ion batteries can pose unique safety hazards since they contain a flammable electrolyte and may be kept pressurized. A battery cell charged too quickly could cause a short circuit, leading to explosions and fires.  Because of these risks, testing standards are more stringent than those for acid-electrolyte batteries, requiring both a broader range of test conditions and additional battery-specific tests.    There have been battery-related recalls by some companies, including the 2016 Samsung Galaxy Note 7 recall for battery fires.  
- The advantages of the LTO cells: Originates from the Anode side of the battery cell. Whereas the Anode side of ordinary Li-Ion cells is made up of Graphite, the Anode side of the LTO cell is composed of LTO.