Abstract:
Amidst the rising population and energy demands, hydrogen fuel provides a cleaner, greener, and more
sustainable alternative to fossil fuels. In this aspect, electrochemical oxidation of biomass such as
glucose, affords a more energy-efficient method as compared to water electrolysis in terms of
energy storage, enhanced hydrogen (H 2 ) production and production of a value-added fuel viz.
glucaric acid. Herein, we have designed nickel manganese oxide over OCNT as a bifunctional
electrocatalyst for hydrogen evolution reaction (HER) at the cathode and glucose oxidation reaction
(GOR) at the anode. While assembled a full cell (GOR-HER), 370 mV of potential was saved and
a boost in hydrogen production from 0.05 mL min−1 to 0.16 mL min−1 was recorded. Moreover,
selective formation of glucaric acid was confirmed by HR-MS, 1 H-NMR and 13 C-NMR with a F.E. of
62.8% at 1.3 V vs. RHE.
