Incorporating allylated lignin-derivatives in thiol-ene gel-polymer electrolytes.

Abstract:

:Growing environmental and economic concerns as well as the uncertainty that accompanies finite petrochemical resources contributes to the increase in research and development of bio-based, renewable polymers. Concurrently, industrial and consumer demand for smaller, safer, and more flexible technologies motivates a global research effort to improve electrolytic polymer separators in lithium-ion batteries. To incorporate the aromatic structural advantages of lignin, a highly abundant and renewable resource, into gel-polymer electrolytes, lignin-derived molecules, vanillyl alcohol and gastrodigenin are functionalized and UV-polymerized with multi-functional thiol monomers. The resulting thin, flexible, polymer films possess glass transition temperatures ranging from -42.1°C to 0.3°C and storage moduli at 25°C ranging from 1.90MPa to 10.08MPa. The crosslinked polymer films swollen with electrolyte solution impart conductivities in the range of 7.04×10-7 to 102.73×10-7Scm-1. Thiol molecular weight has the most impact on the thermo-mechanical properties of the resulting films while polymer crosslink density has the largest effect on conductivity. The conducting abilities of the bio-based gel-polymer electrolytes in this study prove the viability of lignin-derived feedstock for use in lithium-ion battery applications and reveal structurally and thermally desirable traits for future work.

journal_name

Int J Biol Macromol

authors

Baroncini EA,Stanzione JF 3rd

doi

10.1016/j.ijbiomac.2018.02.160

subject

Has Abstract

pub_date

2018-07-01 00:00:00

pages

1041-1051

eissn

0141-8130

issn

1879-0003

pii

S0141-8130(17)34638-X

journal_volume

113

pub_type

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