Hydrogen storage on boron substituted carbon materials

• Investigation on the effect of hydrogen adsorption on heteroatom (B) substituted carbon.
• Compared to pure carbon (without B) enhanced H2 adsorption on boron substituted carbon was observed.
• Heteroatom (B) substituted carbon, which allowed us to store more than 5 wt% H2 at 298 K and 100 bar.

Hydrogen storage capacity of boron substituted carbon materials synthesized by the carbonization of resorcinol and triethylborate as carbon and boron sources respectively is reported. The effects of the boron-doping and carbonization temperature and the role of functional groups have been investigated. The hydrogen adsorption capacity has been studied with a high pressure volumetric analyzer (HPVA) and a maximum of 5.9 wt% hydrogen storage capacity was observed at 298 K and 100 bar pressure. At 77 K in both carbon samples (namely BC-600 or BC-800) show only fractional weight percent of hydrogen sorption (1.1 and 0.5 wt%). The nearly 5 weight % hydrogen storage was obtained by loading heteroatom (B) to carbon sample at 298 K and 100 bar.