A novel smart goggle with tunable light transmittance was designed, fabricated and characterized in this research. The
developed smart goggle lens was all-plastic based electrochromic (EC) device. The working EC material was a layer of
thin film conducting polymer: poly (3,4-(2,2-dimethylpropylenedioxy)thiophene) (PProDOT-Me<sub>2</sub>), while the counter
material of the device was a layer of thin film inorganic oxide: vanadium oxide-titanium oxide (V<sub>2</sub>O<sub>5</sub>-TiO<sub>2</sub>) composite,
which serves as an ion storage layer. A transparent electrolyte as the ion transport layer was sandwiched between the
working and counter parts of the device. The whole device was sealed with an UV cured flexible film sealant. The smart
goggle exhibited tunable light transmittance in visible light wavelength (380-800nm), with a maximum contrast ratio at
580nm. Meanwhile, other unique properties include fast switching speed, low driving voltage, memory function (no
power needed after switching, bi-stable), great durability, high flexibility, light weight, and inexpensiveness.
This paper discusses the design, fabrication and characterization of lens for smart sunglasses based on electrochromic
devices. The prepared electrochromic device was fabricated with ITO coated PET plastic. The working EC material film
was poly [3,3-dimethyl-3,4-dihydro-2H-thieno [3,4-b][1,4]dioxepine] (PProDOT-Me<sub>2</sub>), while the counter layer of the
device was vanadium oxide titanium oxide (V<sub>2</sub>O<sub>5</sub>/TiO<sub>2</sub>) composite film, which serves as an ion storage layer. A solution
type electrolyte as the ionic transport layer was sandwiched between the working and counter layers. The lens exhibited
tuneable shade in visible light wave length, with a maximum contrast ratio at 580nm.
Proposed thin film battery is comprised of a polymer-lithium ion cell material with barrier-layer packaging and
mechanical reinforcing layers. A semi-solid/ solid electrolyte and a mesoporous polymer separator are sandwiched in
between of anode and cathode. A composite film with a carbon nanotube (CNT) network serves as the anode and a
mesoporous transitional metal oxide Li<sub>x</sub>CoO<sub>2</sub> as the cathode, where porous metal sheets serve as the current collector.
The CNT network fabrics have high in-plane tensile strength. LiCoO<sub>2</sub> is used as the cathode, because the Co atoms do
not migrate to Li layers, so that cathode does not generate flammable gases during charging that create safety problems.
Merit of this study is using the porous metal sheet, which is flexible, lightweight, low electric resistance, high strength
and strong stability in alkaline solution. This paper presented development of electrolyte for laminated polymer lithium
rechargeable battery. Two-type electrolytes, semi-solid and solid, were attempted; high ionic conductivity of Li ion
electrolytes was achieved.