Polymer/Inorganic Nanoparticle Composites with Asymmetric Trilayer Configuration as Functional Electrolyte Membrane for Full-cell Lithium Ion Battery

Abstract

Asymmetric trilayer membrane shall be first used in full cell lithium ion battery By choosing the ceramic fillers of electrospinning solution during layer-by-layer deposition acidic/basic property can be functionalized in individual layer The transition from coordination complexes to free lithium ions is expected on the surface of SiO2 nanoparticles On the other side anions accumulated on the surface of nanoparticle can provide an efficient pathway for lithium ions The pivotal concept of zeta potential difference for polarization behavior is stressed in the electrolyte and it is different from the case in conventional nanocomposite membrane It is observed that the performance of electrolyte membranes has no direct relation with their ionic conductivity Poly(acrylonitrile) based electrolyte membrane with asymmetric trilayer configuration can exhibit 1 60 mS cm?1 at 30 oC It provides a capacity of 110 mAh g?1 at 5 C-rate and retain 87% initial capacity after 500 cycles The rate capability of the battery is comparable to that assembled with commercial trilayer membrane It can sustain at 0 5 mA cm?2 without internal short circuit during 270 h lithium stripping-plating process With modern electrospray or electrospinning process the unique configuration applications of this technology include full cell lithium ion batteries supercapacitors and other battery systems made up of asymmetric electrode configuration

Date of Award	2016 Jul 21
Original language	English
Supervisor	Hsisheng Teng (Supervisor)