02287nas a2200217   4500008004100000022001400041245016200055210006900217260000900286300001200295490000800307520147800315653002101793653002001814653002201834653003401856653001401890100001901904700002701923856011901950       2024                        eng d  a0021-979700aTensile nanostructured hierarchically porous non-precious transition metal-based electrocatalyst for durable anion exchange membrane-based water electrolysis0 aTensile nanostructured hierarchically porous nonprecious transit  cJUN   a389-3990 v6643 a<p>
	Electrochemical water electrolysis is a promising method for sustainable hydrogen production while transiting towards hydrogen economy. Among many, the Anion Exchange Membrane (AEM) based water electrolyzer is an emerging yet potentially affordable technology on maturity for producing large-scale hydrogen accommodating the usage of Non-Platinum Group Metal (non-PGM) based inexpensive electrocatalysts. Herein, we demonstrate the excellent performance of a bifunctional Nickel Copper Phosphide-Nickel sulphide (NCP-NS) electrocatalyst with a unique tensile nanostructure obtained via a facile, controlled ambient galvanic displacement route. An AEM electrolyzer with a larger active area of 10 cm(2) stacked with the symmetric NCP-NS electrodes and a membrane demonstrates scalability with a requirement of a mere 1.66 V to reach a current density of 10 mA cm(-2). The nickel-copper phosphide boosts the kinetics of charge transfer between the electrode and electrolyte interface, while a unique combination of a few nickel sulphide phases present in the catalyst provides sufficiently appropriate active sites for the overall water electrolysis. For the first time, we report a room temperature performance of similar to 230 mA cm(-2) at 2 V for a non-PGM-based bifunctional electrocatalyst with exceptional durability for over 300 h of operation in an AEM water electrolyser with a retention rate of 95 %-97 % at a current density range of 80-800 mA cm(-2).</p>
10aAEM electrolyzer10aBifunctionality10aElectrodeposition10aNon-PGM based Electrocatalyst10astability1 aSingh, Kailash1 aSelvaraj, Kaliaperumal  uhttp://library.ncl.res.in/content/tensile-nanostructured-hierarchically-porous-non-precious-transition-metal-based01821nas a2200157   4500008004100000022001400041245012900055210006900184260000800253300001400261490000700275520120700282100001901489700002701508856012801535       2025                        eng d  a0888-588500aMaterial selection for enhanced performance in anion exchange membrane water electrolyzers: a study of membranes and gaskets0 aMaterial selection for enhanced performance in anion exchange me  cMAR  a7211-72190 v643 a<p>
	Anion exchange membrane water electrolyzer (AEMWE) is an emerging technology for large-scale hydrogen production, where membrane electrode assembly (MEA) plays a critical role in the electrolyzer efficiency. This study investigates the effects of different membranes (Piperion, Aemion, and Sustainion) and gaskets (Viton, poly(tetrafluoroethylene) (PTFE), and Silicon) using a non-platinum group metal (non-PGM) bifunctional electrocatalyst under fixed compression and flow rates. Membrane properties such as ionic resistance and diffusion and gasket properties like thermal suitability and compressibility significantly affect the overall performance of AEMWE. The results indicate that Sustainion and Aemion membranes are best suited for lab-scale and industrial applications, respectively, while Silicon and PTFE gaskets are optimal for corresponding scales. Understanding these effects can help to improve the efficiency and guide material selection. This study provides valuable insights for researchers developing AEMWE technology, enabling advancements from laboratory research to megawatt-level industrial hydrogen production and supporting the transition to clean-energy solutions.</p>
1 aSingh, Kailash1 aSelvaraj, Kaliaperumal  uhttp://library.ncl.res.in/content/material-selection-enhanced-performance-anion-exchange-membrane-water-electrolyzers-study