Probing the electrolyte infiltration behaviour of activated carbon supercapacitor electrodes by in situ neutron scattering using aqueous NaCl as electrolyte

Journal Article · 24 April 2018 · Carbon

DOI: https://doi.org/10.1016/j.carbon.2018.04.072 · OSTI ID:1436046

Liu, Yiqun ^[1]; Li, Chen  ^[2]; Liu, Cong ^[1]; Chen, Yan  ^[3]; An, Ke  ^[3]; Landskron, Kai ^[1]

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1. Lehigh Univ., Bethlehem, PA (United States)
2. Univ. of California-Riverside, Riverside, CA (United States)
3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

In situ contrast-matched neutron scattering was used to probe the electrolyte infiltration behavior of activated supercapacitor carbon electrodes using an aquoeus 1 M NaCl solution. It was found that only about 20% of the pore volume was infiltrated at chemical equilibrium. The partial infiltration can be attributed to the co-existence of hydrophilic and hydrophilic pores. As a result, the study suggests that for the achievement of optimal capacitance, supercapacitor electrodes should be evacuated before electrolyte infiltration.

• Research Organization: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States); Energy Frontier Research Centers (EFRC) (United States). Energy Frontier Research in Extreme Environments (EFree)
• Sponsoring Organization: USDOE
• Grant/Contract Number: AC05-00OR22725
• OSTI ID: 1436046
• Journal Information: Carbon, Journal Name: Carbon Journal Issue: C Vol. 136; ISSN 0008-6223
• Publisher: ElsevierCopyright Statement
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY