Development of biofuel cell adopting multiple poly(diallyldimethylammonium chloride) layers immobilized on carbon nanotube as powerful catalyst

Aqueous organic redox flow batteries using naphthoquinone and iodide maintaining pH of electrolytes desirably by adoption of carboxylic acid functionalized carbon nanotube catalyst

“…Since the amount of I 3 À ions (or I 2 molecules) needed for reaction (6) increases with SOC during the charging process, the reaction rate forming polyiodide increases proportionally to SOC of catholyte. Specifically, as the SOC of the catholyte is lower, the reaction rate forming polyiodide becomes slower.…”

“…For this purpose, energy storage systems (ESSs) are needed. [5][6][7][8] Of the ESSs, redox flow batteries (RFBs) have been the number one option. In RFB system, energy is stored via redox-active materials, which are contained in flowing electrolytes, while a couple of redox reactions occur to charge and discharge energy in two electrodes that are separated by a membrane.…”

Maximizing the enzyme immobilization of enzymatic glucose biofuel cells through hierarchically structured reduced graphene oxide

“…In 2015, according to Hyun and Kwon et al, the performance of biofuel cells was considerably increased when this LbL was used. 37,38 More specifically, alternating layers of GOx and PEI were well formed by the difference in surface charge between PEI with high isoelectric point and GOx with low isoelectric point. In addition, in 2018, a study producing 120 layers by the alternating stack of Tris(2-aminoethyl)amine (TREN) and GOx was also reported.…”

“…When LbL method is applied, the denaturation of GOx does not occur because LbL does not require chemical treatment, which is known to be the main cause of the denaturation of enzymes. In 2015, according to Hyun and Kwon et al, the performance of biofuel cells was considerably increased when this LbL was used 37,38 . More specifically, alternating layers of GOx and PEI were well formed by the difference in surface charge between PEI with high isoelectric point and GOx with low isoelectric point.…”