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Lithium-Ion Batteries by Yuping Wu

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Chapter 11

Gelled Polymer Electrolytes

Yusong Zhu, Shiying Xiao, Yuping Wu, and Teunis van Ree

As discussed in Chapter 10, the ionic conductivities achieved with solid polymer electrolytes, so far, have remained below 10−3 S/cm. As a result, they cannot yet be applied in common and large-scale lithium-ion batteries. Gel polymer electrolytes are a compromise between organic electrolytes and solid polymer electrolytes since they have characteristics of both polymers (good processing performance) and organic electrolytes (high ionic conductivity). The first reports on this kind of electrolyte can be dated back to 1975 [1]. They can be used safely in mass-produced lithium-ion batteries. Due to the good thermoplasticity and molding ability of the ...

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