Water-processable cellulosic nanocomposites as green dielectric films for high-energy storage

نویسندگان

چکیده

With the depletion of fossil resources and ever-increasing energy demand, it becomes crucial to address global challenge sustainable routes renewable dielectric materials, which can store electrostatically for flexible electronics pulsed power applications. Here, TEMPO-oxidized cellulose nanofibrils with tailored charge density are synthesized mixed colloidal poly(vinylidene fluoride) nanoparticles using nontoxic water as solvent produce transparent films. The as-prepared nanomaterials resulting composite films were extensively characterized. Compared other biopolymer ceramic dielectrics, cellulose-based nanocomposites sandwiched between two thin polyvinyl alcohol layers achieve a high 7.22 J·cm−3 at breakdown strength 388 MV·m−1. Furthermore, stored in laminated is released rate 1.60 microseconds, yielding stable ∼3 MW·cm−3 under an applied field 300 MW·m−1 over 1000 charge/discharge cycles, more than ten times greater that biaxially-oriented polypropylene. Significantly, these findings pave way toward environmentally-benign processing naturally-derived materials applications storage devices.

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ژورنال

عنوان ژورنال: Energy Storage Materials

سال: 2022

ISSN: ['2405-8297', '2405-8289']

DOI: https://doi.org/10.1016/j.ensm.2022.03.047