01363nas a2200265 4500008004100000022001400041245017100055210006900226260000800295300001600303490000600319520035100325653000900676653004100685653002400726653004800750653002500798653002100823653001000844100002800854700003500882700003500917700002200952856012300974 2022 eng d a2574-096200aFormation of the secondary phase domain by multi-cation substitution for the superior electrochemical performance of spinel cathodes for high-voltage li-ion batteries0 aFormation of the secondary phase domain by multication substitut cDEC a15345-153550 v53 a

{Disorder-structured spinel oxides are opening frontiers for high-capacity/high-voltage cathodes to meet the challenges of independ-ence on cobalt-containing cathodes toward cheap and sustainable energy storage sources in Li-ion batteries (LIBs). In the present work, a series of Co-free materials: LiMn2-x-y-zNixFeyAlzO4 (x = 0.8-0.5

10a5Ni010acation-doped spinel cathode material10acobalt-free cathode10adisorder structured spinel cathode material10ahigh-voltage cathode10ali-ion batteries10aLiMn11 aNayaka, Girish, Praveen1 aShivamurthy, Bogalera, Papaiah1 aThripuranthaka, Marulasiddappa1 aShelke, Manjusha. uhttps://library.ncl.res.in/content/formation-secondary-phase-domain-multi-cation-substitution-superior-electrochemical02332nas a2200313 4500008004100000022001400041245008900055210006900144260000800213300000800221490000700229520130700236653002101543653004501564653002001609653002601629100001701655700001701672700001901689700001801708700002101726700003001747700002601777700002801803700002401831700002601855700002301881856011401904 2024 eng d a1388-076400aAn effective, facile, and rapid synthesis of nanosized Mn3O4 using a microwave route0 aeffective facile and rapid synthesis of nanosized Mn3O4 using a  cOCT a2390 v263 a

Microwave-assisted one-pot, one-step, calcination-free synthesis of nanosized Mn3O4 is reported using only benzylamine and manganese acetate. Benzylamine in this protocol plays a vital role for efficient microwave synthesis. This microwave method enables the synthesis of nanosized Mn3O4 in just few hours only in a single step eliminating the need of calcinations of any intermediate. The synthesized nanosized Mn3O4 was analyzed by XRD, HRTEM, EDAX, and Raman spectroscopy. The catalytic and electrochemical properties of as-synthesized Mn3O4 were investigated. In galvanostatic charge-discharge experiments, after 800 cycles, more than 89% capacitance was retained for electrodes made by as synthesized Mn3O4 nanomaterials indicating its very good stability. In the catalytic conversion of cinnamyl alcohol to cinnamaldehyde via oxidation, using as prepared nanosized Mn3O4 as a catalyst, it displays effective catalytic properties. A probable mechanical study of its formation was also envisaged. This synthesis protocol is additive-free, occurs in a short time, is facile, is energy efficient, and eliminates the use of many chemicals. These silent features make these reported protocols economically viable and environmentally benign which adhere to the principles of Green Chemistry.

10aCalcination free10aElectrochemical and catalytic properties10aNanosized Mn3O410aSingle-step synthesis1 aYadav, Akash1 aJha, Ratnesh1 aBhatkar, Akash1 aKamble, Aditi1 aVaishnav, Vishal1 aBogalera, Shivamurthy, P.1 aManikandan, Marimuthu1 aNayaka, Girish, Praveen1 aUmbarkar, Shubhangi1 aRaja, Thirumalaiswamy1 aBhatte, Kushal, D. uhttps://library.ncl.res.in/content/effective-facile-and-rapid-synthesis-nanosized-mn3o4-using-microwave-route01951nas a2200181 4500008004100000022001400041245014800055210006900203260000800272300001400280490000700294520122200301100003501523700003501558700002501593700002801618856012301646 2024 eng d a0887-062400aInfluence of the crystal plane orientation in enhancing the electrochemical performance of a trication-substituted cathode for Li-ion batteries0 aInfluence of the crystal plane orientation in enhancing the elec cFEB a4653-46650 v383 a

High-voltage spinel cathodes with low nickel are promising candidates for Li-ion batteries owing to their high energy and power density, thermal stability, and eco-friendliness. However, the high operating voltage (similar to 4.7 V) leads to the decomposition of electrolytes, structural disorder, and deterioration of the cathode-electrolyte interphase (CEI) as well as hinders practical capability. We have synthesized trication-substituted spinel cathode materials with exposed (111) crystal planes and truncated octahedral shapes. These materials have demonstrated high specific discharge capacity and high rate capability up to 1000 cycles with a voltage window of 3.5-5 V. The crystal plane orientation of these materials has been investigated using X-ray diffraction of electrodes and electron microscopic studies and correlated with the electrochemical performance of the surface plane of exposed cathode materials. Among the three synthesized materials, the LMNFA2 cathode has shown a specific discharge capacity of 109.29 mAh g(-1) at 1 C after 1000 cycles with a capacity retention of 76.3%, which is nearly equal to the previously reported dual-phase material with the same metal compositions.

1 aShivamurthy, Bogalera, Papaiah1 aThripuranthaka, Marulasiddappa1 aShelke, Manjusha, V.1 aNayaka, Girish, Praveen uhttps://library.ncl.res.in/content/influence-crystal-plane-orientation-enhancing-electrochemical-performance-trication02557nas a2200205 4500008004100000022001400041245018300055210006900238260000800307300001700315490000700332520174700339100002402086700002002110700002802130700001902158700002402177700002202201856012802223 2026 eng d a0743-746300aEnhanced photocatalytic hydrogen evolution in deionized/natural seawater and removal of organic pollutants using the heterostructure of CuO/Cu2O nanoparticles under visible light0 aEnhanced photocatalytic hydrogen evolution in deionizednatural s cFEB aPMID 98827360 v423 a

Water splitting for hydrogen production and reducing water pollution using solar light are part of the Sustainable Development Goals, which require highly active photocatalytic materials. The heterostructures have demonstrated remarkable photocatalytic advantages in visible light. Herein, we report microwave-assisted green synthesis of CuO/Cu2O nanoparticles using Tridax plant leaf extract. The synthesized nanoparticles were characterized by using PXRD, UV-DRS, Raman spectroscopy, XPS, PL, TRPL, FE-SEM, HR-TEM, BET, and photocurrent. The photocatalytic water splitting performance of CuO/Cu2O and CuO was measured under visible light (lambda >= 420 nm) irradiation using methanol as a sacrificial reagent in DI water and natural seawater. The H2 evolution rates in DI water for CuO/Cu2O and CuO are 2043.21 and 970.09 mu mol g-1 h-1 with apparent quantum efficiency (AQE) values of 5.60 and 2.66 %, respectively. In natural seawater, the H2 evolution rates are 2599.29 and 1370.54 mu mol g-1 h-1 with AQE values of 7.12 and 3.75 %, respectively. The rate of H2 evolution slightly increased in natural seawater. Also, the degradation of the methylene blue dye was examined here, and the efficiency of CuO/Cu2O was determined to be 97 % under natural sunlight. Electrocatalytic H2 evolution was also studied here by using linear sweep voltammetry. Tafel slope values for CuO/Cu2O and CuO are 153 and 250 mV dec-1, respectively. The lowest Tafel value of CuO/Cu2O indicates a faster rate of reaction, thereby producing easier charge separation and lowering the electron-hole recombination due to the presence of surface defects, smaller particle size, enhanced crystallinity, and the synergistic effect between Cu2O and CuO.

1 aKangutkar, Raju, S.1 aWalko, Priyanka1 aNayaka, Girish, Praveen1 aNigam, Sandeep1 aMajumder, Chiranjib1 aManjanna, Jayappa uhttps://library.ncl.res.in/content/enhanced-photocatalytic-hydrogen-evolution-deionizednatural-seawater-and-removal-organic