02158nas a2200229   4500008004100000022001400041245012900055210006900184260000800253300001100261490000700272520129700279653003401576653001901610653003701629653003001666653003001696653001601726100002901742700002701771856013001798       2021                        eng d  a2452-262700aMolecularly engineered graphene oxide anchored metal organic assembly: an active site economic bi-functional electrocatalyst0 aMolecularly engineered graphene oxide anchored metal organic ass  cSEP  a1002690 v293 aLow-temperature fuel cells are the most promising sustainable energy technology as they use hydrogen, an environmentally clean fuel. However, the sluggish kinetics of oxygen electrochemistry, a chronic issue, is holding them from commercialization. Herein, we address this issue through a molecular level design of a Graphene oxide anchored Metal Organic Molecular Assembly (G-MOMA) based catalyst. This non-precious metal catalyst consists of Ni and Fe ions ligated by graphene oxide supported terpyridine, a unique molecular assembly design that maximizes the utilization of active metal centers. This G-MOMA catalyst brings down an over potential (240 mV) for oxygen evolution reaction (OER) as close as that of the bench mark catalyst Ru/C with an impressive Tafel slope of 58 mV/dec and a cyclic stability of >30,000 cycles. G-MOMA excels in oxygen reduction reaction (ORR) too with an onset at 0.88 V (vs RHE). The remarkably stable G-MOMA catalyst surprises with an excellent bi-functionality towards both OER and ORR with an overall potential difference of mere 0.77 V, which is 180 mV and 70 mV lesser than the standard Pt/C and Ru/C catalysts, respectively. The G-MOMA catalyst is well in the activity range of the state-of-art bi-functional catalysts and yet cheaper by many folds.10aBi-functional electrocatalyst10agraphene oxide10aMetal organic molecular assembly10aOxygen Evolution Reaction10aoxygen reduction reaction10aterpyridine1 aJhajharia, Suman, Kumari1 aSelvaraj, Kaliaperumal  uhttps://library.ncl.res.in/content/molecularly-engineered-graphene-oxide-anchored-metal-organic-assembly-active-site-economic02495nas a2200241   4500008004100000022001400041245012000055210006900175260000800244300001100252490000800263520161100271653004701882653003301929653003201962653003001994653001202024100001902036700002002055700001902075700002702094856013202121       2025                        eng d  a0013-468600aHighly active and durable MNS bifunctional electrocatalysts for enhanced anion exchange membrane water electrolysis0 aHighly active and durable MNS bifunctional electrocatalysts for   cDEC  a1474080 v5423 a<p>
	The development of non-platinum group metal (non-PGM) electrocatalysts with performance comparable to their noble metal counterparts remains a significant challenge for overall water splitting. In this study, we demonstrate the performance of an Anion Exchange Membrane (AEM) water electrolyzer using a bifunctional, non-PGM electrocatalyst: reduced graphene oxide (rGO)-encapsulated MoS2/Ni3S2 (MNS) grown on a nickel foam (NF) substrate. The rGO/MoS2/Ni3S2 (rGO-MNS) electrode was synthesized via a facile, single-step hydrothermal method. For the hydrogen evolution reaction (HER), the rGO-MNS electrode exhibited a low overpotential of 94 mV at a current density of 100 mA cm-2, maintaining excellent stability over 50 h with a minimal degradation rate of 120 mu V h-1. In the case of the oxygen evolution reaction (OER), an overpotential of 410 mV was required to reach the same current density, with a similarly robust durability and a degradation rate of only 360 mu V h-1. When employed as symmetric electrodes for overall water electrolysis, the rGO-MNS system achieved a current density of 10 mA cm-2 at a cell voltage of 1.51 V, outperforming the benchmark Pt/C &amp; Vert;Ru/C catalyst pair, which required 1.58 V to reach the same performance. The enhanced electrocatalytic activity and durability are attributed to the conductive rGO encapsulation, which facilitates charge transfer and mitigates surface oxidation of the catalyst. These results present a promising strategy for designing cost-effective, durable, and highperformance non-PGM electrodes for AEM water electrolysis.</p>
10aAnion Exchange Membrane Water Electrolysis10aBifunctional Electrocatalyst10ahydrogen evolution reaction10aOxygen Evolution Reaction10arGO-MNS1 aSingh, Kailash1 aYadav, Himanshu1 aSamdani, Kunda1 aSelvaraj, Kaliaperumal  uhttps://library.ncl.res.in/content/highly-active-and-durable-mns-bifunctional-electrocatalysts-enhanced-anion-exchange-membrane