Polymer Electrolytes: Imprintable, Bendable, and Shape-Conformable Polymer Electrolytes for Versatile-Shaped Lithium-Ion Batteries (Adv. Mater. 10/2013)

Department of Chemical Engineering, Kangwon National University, Kangwondaehak-gil, Chuncheon, Kangwon, 200-701, Korea.
Advanced Materials (Impact Factor: 17.49). 03/2013; 25(10). DOI: 10.1002/adma.201204182
Source: PubMed

ABSTRACT A class of imprintable, bendable, and shape-conformable polymer electrolyte with excellent electrochemical performance in lithium battery system is reported. The material consists of a UV-cured polymer matrix, high-boiling point liquid electrolyte, and Al(2) O(3) nanoparticles, formulated for use in lithium-ion batteries with 3D-structured electrodes or flexible characteristics. The unique structural design and well-tuned rheological characteristics of the UV-curable electrolyte mixture, in combination with direct UV-assisted nanoimprint lithography, allow the successful fabrication of polymer electrolyte in geometries not accessible with conventional materials.

57 Reads
  • [Show abstract] [Hide abstract]
    ABSTRACT: We demonstrate mechanically compliant and lithium dendrite growth-suppressing composite polymer electrolytes for use in flexible lithium-ion batteries. This new composite polymer electrolyte (referred to as “CPE”) is fabricated via an exquisite combination of UV (ultraviolet)-cured ethoxylated trimethylolpropane triacrylate macromer (serving as a mechanical framework) and Al2O3 nanoparticles (as a functional filler) in the presence of a high boiling point liquid electrolyte. A distinctive structural feature of the CPE is the close-packed Al2O3 nanoparticles in the liquid electrolyte-swollen ETPTA macromer matrix. Owing to this unique morphology, the CPE provides significant improvements in the mechanical bendability and suppression of lithium dendrite growth during charge–discharge cycling.
    03/2013; 1(16):4949-4955. DOI:10.1039/C3TA10612H
  • [Show abstract] [Hide abstract]
    ABSTRACT: The unending demand for portable, flexible, and even wearable electronic devices that have an aesthetic appeal and unique functionality stimulates the development of advanced power sources that have excellent electrochemical performance and, more importantly, shape versatility. The challenges in the fabrication of next-generation flexible power sources mainly arise from their limited form factors, which prevent their facile integration into differently shaped electronic devices, and from the lack of reliable electrochemical materials that exhibit optimized attributes and suitable processability. This review describes the technological innovations and challenges associated with flexible energy storage and conversion systems such as lithium-ion batteries and supercapacitors, along with an overview of the progress in flexible proton exchange membrane fuel cells (PEMFCs) and solar cells. In particular, recently highlighted cable-type flexible batteries with extreme omni-directional flexibility are comprehensively discussed.
    Energy & Environmental Science 04/2013; 6(8):-. DOI:10.1039/C3EE24260A · 20.52 Impact Factor
  • Source
    [Show abstract] [Hide abstract]
    ABSTRACT: A high‐performance gum‐like electrolyte with thermal‐protection capability is constructed based on emulsion technique. The gummy electrolytes show excellent performance in adhesion/contact, structural integrity under various deformations, high ionic conductivity, and safety (thermal‐protection and leakage‐free properties). These results indicate that the gummy electrolyte is a viable solution for safe and flexible/stretchable lithium ion batteries.
    Advanced Energy Materials 12/2013; 3(12). DOI:10.1002/aenm.201300495 · 16.15 Impact Factor
Show more