Poly(vinyl diphenylquinoxaline) as a hydrogen storage material toward rapid hydrogen evolution

Organic redox polymers as electrochemical energy materials

“…The polymer gel quickly releases two equivalents of hydrogen gas (within 2 h) under the same mild conditions (entry 3, Table 2). 129,130 Tetrahydro-/quinaldine (hydrogen density: 2.7 wt%) was introduced into poly(acrylic acid); its Ircatalyst-containing hydrogel evolved hydrogen gas at a rate of 160 mL g( polymer) −1 by warming at 80 °C for 3 h. 131 In addition to aromatic compounds, many organic liquids have been investigated for their abilities to reversibly hydrogenate. 125,132,133 Among them, aliphatic secondary alcohols are relatively easily dehydrogenated due to smaller enthalpy changes associated with dehydrogenation than those of other organic liquids (despite exhibiting larger changes than those of the aromatic compounds described above).…”

“…The polymer gel quickly releases two equivalents of hydrogen gas (within 2 h) under the same mild conditions (entry 3, Table 2). 129,130 Tetrahydro-/quinaldine (hydrogen density: 2.7 wt%) was introduced into poly(acrylic acid); its Ir-catalyst-containing hydrogel evolved hydrogen gas at a rate of 160 mL g(polymer) −1 by warming at 80 °C for 3 h. 131…”

A Bird’s-Eye View on Polymer-Based Hydrogen Carriers for Mobile Applications

“…The calculated H 2 uptake in this polymer was up to 2.6 wt% (related to the repeating unit), which is a fairly high number for a chemical solid-state hydrogen carrier so far. This group published another article to improve the hydrogenation rate of quinoxaline-based polymers [ 43 ]. A poly(vinyl diphenylquinoxaline) was obtained by modifying bromo-quinoxaline to give 6-vinyl-2,3-diphenylquinoxline and polymerizing it in THF.…”