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- W4307646516 abstract "Biochar-assisted water electrolysis (BAWE) facilitates the high-value utilization of biomass and energy-saving hydrogen production. However, the BAWE efficiency is hindered by slow kinetics of biochar oxidation reaction (BOR) at anode. Herein, to improve the overall efficiency of BAWE, three-dimensional porous nanosheets modified on nickel foam (Ni1Fe2-LDH@NF) was developed for BOR, and its mechanism was identified. Impressively, the BAWE system exhibited remarkable activity, including a low potential of 1.387 V vs. RHE for BOR over as-synthesized electrocatalyst at current density of 10 mA·cm−2, and excellent long-term stability over 20 h at a high current density of 200 mA·cm−2 and after 1000 CV cycles. The required electricity input was 3.29 kWh·Nm−3H2 at 10 mA·cm−2 for BAWE with Ni1Fe2-LDH@NF toward BOR. In addition, the reaction mechanism of BOR including biochar direct oxidation on the electrocatalysts surface and indirect oxidation in the electrolyte was deduced, according to the surface chemistry and composition changes of electrocatalysts and biochar, as well as the products. This work provides an effective strategy towards the enhancement of the BOR process by designing the binder-free electrocatalysts, and facilitates the development of BAWE for energy-efficient hydrogen production and biomass utilization." @default.
- W4307646516 created "2022-11-04" @default.
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- W4307646516 date "2023-01-01" @default.
- W4307646516 modified "2023-09-26" @default.
- W4307646516 title "Efficient anodic biochar oxidation over three-dimensional self-support nickel-iron nanosheet on nickel foam in biochar-assisted water electrolysis for hydrogen production" @default.
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- W4307646516 doi "https://doi.org/10.1016/j.ijhydene.2022.10.004" @default.
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