Journal
ACS APPLIED ENERGY MATERIALS
Volume 2, Issue 8, Pages 5992-6001Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsaem.9b01109
Keywords
gel polymer electrolytes; supercapacitors; regenerated cellulose nanoparticles; ionic liquids; graphene oxide
Funding
- Energy development Foundation of College of Energy, Xiamen University [2018NYFZ03, 2017NYFZ02]
Ask authors/readers for more resources
To solve the current situation of low efficiency and instability of SCs, herein, the regenerated cellulose nanoparticles are applied on the electrolyte for the first time and a kind of solid-state SC with high performance is synthesized in a facile way. The electrolyte is prepared taking copolymer poly(vinyl alcohol) (PVA) as the polymer matrix, 1-butyl-3-methylimidazolium trifluoromethansulfonate (BmimCF(3)SO(3)) as the supporting electrolyte, graphene oxide as the ionic conducting promoter, and regenerated cellulose nanoparticles as the regulator. This doped ion gel significantly improves the charge-transfer resistance, because the homogeneously distributed regenerated cellulose nanoparticles make the ion transmission more orderly and stable and then reduce charge transfer resistance greatly. A model of the transmission of ions in the novel electrolyte is proposed. The cellulose-based gel electrolyte enables the SC to show good capacity retention of about 80%, and its charge/discharge efficiency maintains at 98% after 10,000 cycles. Those satisfactory performances are due to the high ionic conductivity, excellent compatibility with carbon electrodes and long-term stability of the doped ion gel. Attributed to the simple procedure and its components, the gel electrolyte is highly scalable, cost-effective, safe, and nontoxic as well as has application potential in various energy storage and delivery systems.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available