Centrosymmetric to non-centrosymmetric transition in the CaMnTiO double perovskite system studied through structural analysis and dielectric properties.

We have used high-pressure synthesis to synthesize samples of CaMnTiO double perovskite, where varies between 0.2 and 1. The synthesized materials were structurally characterized with powder X-ray diffraction (XRD).

Reuse of LiCoO Electrodes Collected from Spent Li-Ion Batteries after Electrochemical Re-Lithiation of the Electrode.

The recycling of used Li-ion batteries is important as the consumption of batteries is increasing every year. However, the recycling of electrode materials is tedious and energy intensive with current methods, and part of the material is lost in the process. In this study, an alternative recycling method is presented to minimize the number of steps needed in the positive electrode recovery process.

Atomic/molecular layer deposition and electrochemical performance of dilithium 2-aminoterephthalate.

Control of the redox potential of lithium terephthalate LiTP anode material is demonstrated by functionalizing its terephthalate backbone with an electron-donating amino group; this lowers - as intended - the redox potential of LiTP by 0.14 V. The two Li-organic electrode materials, LiTP and LiTP-NH, are fabricated as crystalline thin films from gaseous precursors using the atomic/molecular layer deposition (ALD/MLD) technique.

Comprehensive study to design advanced metal-carbide@garaphene and metal-carbide@iron oxide nanoparticles with tunable structure by the laser ablation in liquid.

Core-shell nanoparticles represent a class of materials that exhibit a variety of properties. By rationally tuning the cores and the shells in such nanoparticles (NPs), a range of materials with tailorable properties can be produced which are of interest for a wide variety of applications. Herein, experimental and theoretical approaches have been combined to show the structural transformation of NPs resulting to the formation of either NiFeC encapsulated in ultra-thin graphene layer (NiFe@UTG) or NiC/FeC@FeO NPs with the universal one-step pulse laser ablation in liquid (PLAL) method.

High performance low temperature carbon composite catalysts for flexible dye sensitized solar cells.

Roll-to-roll manufacturing of dye sensitized solar cells (DSSCs) requires efficient and low cost materials that adhere well on the flexible substrates used. In this regard, different low temperature carbon composite counter electrode (CE) catalyst ink formulations for flexible DSSCs were developed that can be simply and quickly coated on plastic substrates and dried below 150 °C. The CEs were investigated in terms of photovoltaic performance in DSSCs by current-voltage measurements, mechanical adhesion properties by bending and tape tests, electro-catalytic performance by electrochemical impedance spectroscopy and microstructure by electron microscopy.