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Structure of polymer battery

- Dec 15, 2017 -

There are only two types of lithium-polymer batteries available: 1.5mm thickness, 175mAh, and cell phones with a 3.6mm thickness and a capacity of 500mAh.

1973, PV. Right found the conduction of ions in polymer materials. Since 1978, M.b.armand and others have suggested that solid electrolytes can be used in batteries and electronic devices, and the development and research of polymer batteries has become increasingly active.

Polymer electrolytes are generally divided into 3 types: dry polymers, gel polymers with organic solvents added to dry polymers, and porous polymer electrolytes that add organic solvents to PVDF-represented porous matrix materials. Table 1 shows the properties of these 3 polymer electrolytes. The ionic conductivity of the original dry polymer was 10-7s/cm, and after improvement, the conductivity at room temperature reached 10-4s/cm. However, it is difficult to apply to the electronic devices working at ambient temperature. The gel-type polymer electrolyte, which adds plastic to the dry polymer, is conductive to 10-3s/cm and a big step towards practicality.