Poly(vinylidene fluoride-hexafluoropropylene) polymer electrolyte for paper-based and flexible battery applications

Journal Article · Wed Jun 15 04:00:00 EDT 2016 · AIP Advances

DOI:https://doi.org/10.1063/1.4953811· OSTI ID:22611546

Aliahmad, Nojan; Shrestha, Sudhir; Varahramyan, Kody ^[1]; Agarwal, Mangilal ^[1]

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1. Department of Electrical & Computer Engineering, Indiana University-Purdue University Indianapolis (IUPUI), Indianapolis, IN, 46202 (United States)

Paper-based batteries represent a new frontier in battery technology. However, low-flexibility and poor ionic conductivity of solid electrolytes have been major impediments in achieving practical mechanically flexible batteries. This work discuss new highly ionic conductive polymer gel electrolytes for paper-based battery applications. In this paper, we present a poly(vinylidene fluoride-hexafluoropropylene) (PVDH-HFP) porous membrane electrolyte enhanced with lithium bis(trifluoromethane sulphone)imide (LiTFSI) and lithium aluminum titanium phosphate (LATP), with an ionic conductivity of 2.1 × 10{sup −3} S cm{sup −1}. Combining ceramic (LATP) with the gel structure of PVDF-HFP and LiTFSI ionic liquid harnesses benefits of ceramic and gel electrolytes in providing flexible electrolytes with a high ionic conductivity. In a flexibility test experiment, bending the polymer electrolyte at 90° for 20 times resulted in 14% decrease in ionic conductivity. Efforts to further improving the flexibility of the presented electrolyte are ongoing. Using this electrolyte, full-cell batteries with lithium titanium oxide (LTO) and lithium cobalt oxide (LCO) electrodes and (i) standard metallic current collectors and (ii) paper-based current collectors were fabricated and tested. The achieved specific capacities were (i) 123 mAh g{sup −1} for standard metallic current collectors and (ii) 99.5 mAh g{sup −1} for paper-based current collectors. Thus, the presented electrolyte has potential to become a viable candidate in paper-based and flexible battery applications. Fabrication methods, experimental procedures, and test results for the polymer gel electrolyte and batteries are presented and discussed.

• OSTI ID: 22611546
• Journal Information: AIP Advances, Journal Name: AIP Advances Journal Issue: 6 Vol. 6; ISSN AAIDBI; ISSN 2158-3226
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALUMINIUM COMPOUNDS
CAPACITY
CERAMICS
COBALT COMPOUNDS
CUPRATES
CURRENTS
ELECTRODES
FLEXIBILITY
FLUORINATED ALIPHATIC HYDROCARBONS
IONIC CONDUCTIVITY
LANTHANUM COMPOUNDS
MEMBRANES
MOLTEN SALTS
POLYVINYLS
POROUS MATERIALS
SOLID ELECTROLYTES
SOLIDS
SULFONES
TITANIUM COMPOUNDS
TITANIUM PHOSPHATES