02390nas a2200205 4500008004100000022001400041245014600055210006900201260000800270300001600278490000700294520164200301100001701943700002101960700001701981700002001998700001802018700001702036856013102053 2025 eng d a2040-336400aNiFeMo layered triple hydroxide and MXene heterostructure for boosted oxygen evolution reaction in anion exchange membrane water electrolysis0 aNiFeMo layered triple hydroxide and MXene heterostructure for bo cMAY a12094-121070 v173 a

Efficient, low cost and stable electrocatalysts are highly desirable for overcoming the sluggish kinetics of the oxygen evolution reaction (OER) in alkaline water electrolysis for hydrogen production. Interfacial engineering of heterostructures is quite beneficial for improving charge transfer efficiency at the interface. In this context, heterostructures of layered triple hydroxides (LTHs) and MXenes have shown great potential as OER electrocatalysts owing to their 2D-2D structure and unique physiochemical properties. Coupling LTHs with MXenes can potentially enhance their conductivity and stability, thereby boosting OER activity. In this study, we report a heterointerface between NiFeMo-LTH on Ti3C2Tx MXene, which exhibited superior catalytic activity and stability in alkaline freshwater and seawater, reducing the activation energy. Importantly, the heterostructure achieved a current density of 100 mA cm-2 at the cost of 292 mV and 340 mV overpotentials in alkaline saline water and real seawater, respectively, and showed robustness over 100 h without hypochlorite formation in alkaline real seawater, exhibiting corrosion-resistant behaviour. Moreover, NiFeMo-LTH/MXene explored in alkaline anion exchange membrane water electrolyzer (AEMWE) achieved a current density of 750 mA cm-2 at 2.16 V cell voltage at an operating temperature of 60 degrees C with an energy efficiency of 60.5%. Raman analysis and XPS analysis post stability test demonstrated easy electron transfer from LTH to MXene at the heterointerface, leading to the formation of NiOOH electroactive species that facilitated the OER activity.

1 aPal, Santanu1 aChaturvedi, Ekta1 aDas, Chandni1 aSinha, Nibedita1 aAhmed, Tanbir1 aRoy, Poulomi uhttps://library.ncl.res.in/content/nifemo-layered-triple-hydroxide-and-mxene-heterostructure-boosted-oxygen-evolution-reaction02606nas a2200241 4500008004100000245015100041210006900192260000800261300001600269490000600285520175600291653001302047653001402060653002902074653001802103653003302121100002102154700001702175700001702192700001902209700001802228856011802246 2026 eng d00aChitosan and layered double hydroxide nanosheets composite-based triboelectric nanogenerators for energy harvesting and touch sensing applications0 aChitosan and layered double hydroxide nanosheets compositebased  cJUN a10860-108740 v93 a

The alarming coexistence of increasing energy demand and environmental concerns has raised the immediate need to find suitable alternative energy resources. This need drives the development of environment-friendly, highly efficient tribo electric nanogenerators (TENGs), which have already gained significant success in mechanical energy harvesting. However, it still possesses challenges like ultralow current, which restricts its extensive applications in the real world. This article proposed the innovative combination of advanced layered double hydroxides (LDH) as a nanofiller with sodium chloride ionic salt as a simple strategy to enhance the output current of biodegradable chitosan polymer-based triboelectric nanogenerators (CS-TENG). Polymer chitosan provides a flexible matrix with many active sites, while the addition of LDH effectively enhances the surface area and positively charged sites due to its inherently positively charged layered nanostructure. This combination, together with NaCl-induced ionization and enhanced interfacial polarization, leads to an overall increase in the output performance of TENG. The developed TENG generated an output voltage (V OC) and current (I SC) of 101.6 V and 55.42 mu A, respectively, with a maximum power density of 629.5 mW m-2 at an external load resistance of 10 K Omega. It had the capability to power small-scale electronics like a watch, a calculator, an alarm buzzer, etc. A touch-sensitive TENG-based door sensor was also developed, which was capable of lighting LEDs just by a simple push on the door. This work demonstrated a simple, promising method to explore the potential of environmentally friendly CS-based mechanical energy harvesters for practical applications.

10aChitosan10aComposite10alayereddouble hydroxides10atouch sensing10atriboelectric nanogenerators1 aChaturvedi, Ekta1 aRoy, Poulomi1 aPal, Santanu1 aHossain, Afrin1 aAhuja, Mayank uhttps://library.ncl.res.in/content/chitosan-and-layered-double-hydroxide-nanosheets-composite-based-triboelectric02647nas a2200253 4500008004100000022001400041245013100055210006900186260000900255300001100264490000800275520175400283653003102037653002102068653002802089653002302117653001402140100002102154700003402175700001702209700001702226700002102243856012902264 2026 eng d a0257-897200aEnergy efficient electrophoretic coatings of MXene multilayers for enhanced corrosion resistance and tribological performances0 aEnergy efficient electrophoretic coatings of MXene multilayers f cMAY  a1334270 v5283 a

Surface wear, friction and corrosion have always been among major challenges faced by industries globally which cause significant economic and energy losses yearly. The recent emergence of two dimensional (2D) MXenes in tribology as protective coatings is noteworthy due to their layered structure, tuneable properties, easy to shear ability, and capability of forming anti-corrosion wear resistant tribo-films. In this work, multiple layers of Ti3C2Tx MXene coatings were applied on stainless steel (SS) substrates via energy electrophoretic deposition (EPD) process at low voltage of 5 V to enhance tribology and anti-corrosion behaviour of substrates. The tribological performance was investigated by rotating ball-on-disk tribometry at 5 N load with rotating velocity and radius of 500 RPM and 3 mm respectively. The effect of multiple coating layers on microstructure and tribological performance was also investigated to optimize the coating thickness followed by the extensive characterization of MXene and developed coatings. Surface hardness and coating thickness increased proportionally with increase in number of coating layers resulting into the maximum values of 311.39 HV and 3.25 mu m respectively. Tribological performance confirmed significant reduction in coefficient of friction (COF) and specific wear rate for MXene coated samples compared to uncoated SS substrates. Precisely, two coating layers' sample (MX2) demonstrated the best performance achieving approximate 41.3% and 65.7% reduction in coefficient of friction (COF) and wear rate, respectively. Further, corrosion studies also confirmed the protective role of MXene layers and great anti-corrosion behaviour of MX2 sample with 72.2% protection efficiency.

10aElectrophoretic deposition10aenergy efficient10aMultiple coating layers10aTi 3 C 2 T x MXene10aTribology1 aChaturvedi, Ekta1 aBapanapalle, Chandra, Obulesu1 aPal, Santanu1 aRoy, Poulomi1 aMandal, Nilrudra uhttps://library.ncl.res.in/content/energy-efficient-electrophoretic-coatings-mxene-multilayers-enhanced-corrosion-resistance