Abstract
A polycarboxylic/ether composite polymer electrolyte derived from two-arm monomer and polyethylene oxide (PEO) was in situ synthesized on the cathode. The composite electrolyte exhibits a high ionic conductivity of 3.6 × 10−5 S cm–1, high oxidation stability, excellent stability towards Li metal and makes Li/LiFePO4 present good cyclic and rate performance at 25°C.
Highlights
The development of portable electronics and electric vehicles requires small/tiny form factor energy storage devices with high energy density and stable operability [1,2]
The peaks between 1610 and 1640 cm−1 in the spectrum of monomer A2 are related to the C=C groups, and no peak can be detected in the same spectrum region of PA2 and PA2 with 30 wt% polyethylene oxide (PEO) (PA2-30%PEO)
A novel composite solid-state electrolytes (SSEs) has been developed by adjusting monomer topology and in situ synthesized via UV-curing on cathode
Summary
The development of portable electronics and electric vehicles requires small/tiny form factor energy storage devices with high energy density and stable operability [1,2]. The electrolyte shows an ionic conductivity of 5.6 × 10−5 and 1.1 × 10−3 S cm−1 at 25 and 100°C, and makes the LiFePO4 lithium metal batteries present an initial discharge capacity of 156.2 mA h g−1 and stable cycling performance over 200 cycles at 0.1 C. Reported a PEO-based solid-state electrolyte composited with polydopamine (PDA)-coated Li6.4La3Zr1.4Ta0.6O12 nanoparticles The SSE shows a conductivity of 1.1×10−4 S cm−1 at 30°C and good compatibility adhesion with both positive and negative electrodes.
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