Enhanced cathode performance of Fe₂O₃, boron nitride-doped rGO nanosheets for microbial fuel cell applications

Abstract

Iron(iii) oxide (Fe2O3) and boron nitride (BN)-doped reduced graphene oxide (rGO) nanosheets were prepared successfully using a surfactant-free hydrothermal method.

Towards Integration of Two-Dimensional Hexagonal Boron Nitride (2D h-BN) in Energy Conversion and Storage Devices

“…The EIS evaluations also confirm that Pt/C cathode has better performance since its correlated semicircle in the high-frequency area has a smaller diameter than that of rGO-BN-Fe 2 O 3 (Figure 10c). Power density measurements of the cells also reveal that rGO-BN-Fe 2 O 3 is a promising cathode catalyst for MFCs with a power density of 1673 mW/m 2 , which is 81% of the obtained power density for MFC using Pt/C cathode (Figure 10d) [155]. All in all, the abundance and cost effectiveness of this new cathode material makes it a competitive catalyst compared to other conventional ones.…”

“…Although 2D h-BN can participate in catalytic reactions [14], there are not many reports on 2D h-BN being employed in fuel cell electrodes. Recently, a novel nanostructure of rGO-2D BN-Fe 2 O 3 was introduced as the cathode catalyst of a microbial fuel cell (MFC) [155]. The concept is based on the insertion of 2D h-BN and Fe 2 O 3 onto the r-GO nanosheets to enhance the surface area for facile transport of reactants and improve electron transport to graphene.…”

Catalytic depolymerization of calcium lignosulfonate to high-value oxygenated aromatic compounds over the efficient Fe2O3-La0.8Sr0.2FeO3

“…When the crystallization duration was 2 h, the aggregated state during the initial stages of nucleation resulted in a large pore size. 20 As the crystallization time was extended to 12 h, the specific surface area was 33.5 m 3 g −1 , the pore size was 27.8 nm, and the pore volume was 0.2 cm 3 g −1 . Due to the high specific surface area and large pore structure parameters, the Fe 2 O 3 crystals presented better adsorption capability.…”

“…According to previous studies, Fe 2 O 3 has acquired much interest because of its low costs, non-toxicity, and superior stability. 17,18 Generally, Fe 2 O 3 can be prepared through low-temperature hydrothermal synthesis method, 19–21 precipitation method, 22 sol–gel method, 23 and microemulsion. 24 However, when Fe 2 O 3 spent is regenerated at high temperature with the air, it cannot avoid the sintering problem, which not only lowers the specific surface area and pore structure of the catalyst, reducing the mass transfer process, but also has a prodigious impact on the stability and cyclic regeneration of the catalyst.…”

Advances in boron nitride‐based materials for electrochemical energy storage and conversion

“…Fuel cells are promising energy devices with the advantages of high energy conversion efficiency, low emission and noise, flexibility in fuel selection, cogeneration capability, and low maintenance requirements 171,172 . In recent years, BN‐based materials have been introduced as catalysts in PEM fuel cells, 88,173 solid oxide fuel cell (SOFC), 174 and microbial fuel cell 175 …”