Behera, SnehanjaliSnehanjaliBeheraChauhan, ChetansinhChetansinhChauhanMondal, BiswajitBiswajitMondal2025-08-312025-08-312024-08-0110.1002/smll.2023119462-s2.0-85186620720http://repository.iitgn.ac.in/handle/IITG2025/2879538446102The convergence of water electrolysis and alkaline fuel cells offers captivating solutions for sustainably harvesting energy. The research explores both hydrazine-assisted seawater electrolysis (hydrazine oxidation reaction (HzOR) and hydrogen production reaction (HER)), as well as alkaline hydrazine fuel cell reactions (HzOR and Oxygen reduction reaction (ORR)) by using a bifunctional cobalt polyaniline derived (Co PANI/C) catalyst. The catalyst shows excellent performance for hydrazine-assisted seawater electrolysis in harsh seawater environments to produce H<inf>2</inf> as fuel with nearly 85% Faradaic efficiency and during alkaline HzOR, the bifunctional catalyst generates H<inf>2</inf> with 95% Faradaic efficiency by acting as both anode and cathode side catalyst. Also, the same catalyst requires only a potential of 0.34 V versus RHE and 0.906 V versus RHE for HzOR and ORR, respectively, in 1 m KOH, which makes this overall process useful for a Hz/O<inf>2</inf> fuel cell.falsecobalt | electrocatalysis | hydrazine oxidation | hydrogen evolution reactionArticle161368291 August 20249231194611WOS:001174761900001