Shuqiang Jiao

Abstract:

With the increasing demand for electronic devices, more rechargeable batteries are attractive for energy storage systems. In our work, three novel rechargeable aluminium-ion batteries are proposed. The first one is a rechargeable Ah-level soft-package aluminum-ion battery which is fabricated using carbon paper cathode, high-purity aluminum foil anode and an ionic liquid electrolyte consisting of AlCl3 and 1-ethyl-3-methylimidazalium chloride ([EMIm]Cl). It is the prototype battery with providing a maximal charge of 1.3 Ah at a current density of 10 mA g-1, can light an LED lamp for 14 hours, and can drive a super mini kart steadily. The second one is Al|AlCl3-NaCl|Cn high temperature (above 100 ¡æ) storage battery, which specific capacity is about 120 mA h g-1 at a current density of 1000 mA g-1 and remains stable at 60 mA h g-1 withstand more than 9000 cycles at a current density of 4000 mA g-1. And the third one is a novel rechargeable aluminium-ion battery which based on Al3+ and fabricated with MxSy(M=Ni, Cu, Ti) composites as a cathode material and high-purity Al foil as an anode. The discharge capacity remains over 60~80 mA h g-1 and coulombic efficiency of 99% after a few hundred cycles. Such rechargeable aluminium-ion batteries are to be low cost and safety, and represent a step forward in the development of aluminium-ion battery.