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Batteries are a promising technology in the field of electrical energy storage and have made tremendous strides in recent few decades. In particular, lithium-ion batteries are leading the smart device era as an essential component of portable electronic devices. From the materials aspect, new and creative solutions are required to resolve the current technical issues on advanced lithium (Li) batteries and improve their safety. Metal-organic frameworks (MOFs) are considered as tempting candidates to satisfy the requirements of advanced energy storage technologies. In this review, we discuss the

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Soft-templated synthesis of mesoporous nickel oxide using poly(styrene-block-acrylic acid-block-ethylene glycol) block copolymers, Microporous and Mesoporous Materials (2018),

Lithium metal batteries have recently gained tremendous attention owing to their high energy capacity compared to other rechargeable batteries. Nevertheless, lithium (Li) dendritic growth causes low Coulombic efficiency, thermal runaway, and safety issues, all of which hinder the practical application of Li metal as an anodic material. In this review, the failure mechanisms of Li metal anode are described according to its infinite volume changes, unstable solid electrolyte interphase, and Li dendritic growth. The fundamental models that describe the Li deposition and dendritic growth, such as the thermodynamic, electrodeposition kinetics, and internal stress models are summarized. From these considerations, porous carbon-based frameworks have emerged as a promising strategy to resolve these issues. Thus, the main principles of utilizing these materials as a Li metal host are discussed. Finally, we also focus on the recent progress on utilizing one-, two-, and three-dimensional carbon-based frameworks and their composites to highlight the future outlook of these materials.

A new low-cost optimized hydrothermal process of direct synthesis of ZnO nanowires (NWs)/graphene oxide (GO) hybrid on silicon substrates at a low growth temperature (∼60°C) is reported. The careful optimization of the growth conditions and ZnO/GO relative ratios have resulted in high-density ZnO NWs formation with homogenous density and size distributions directly on GO sheets. The fabricated nanocomposites were intensively investigated by employing different structural, optical and electrical characterization techniques such as SEM, EDX, XRD, FTIR, UV-VIS and I-V. SEM analysis showed a formation of highly dense ZnO NWs on GO sheets with homogenous size di stributions with average approximate diameter and length of 70 nm and 310 nm, respectively. The EDX combined with FTIR and XRD measurements confirmed the exact chemical composition of the intended structure. The roomtemperature UV-VIS spectra revealed an enhance optical absorption of UV-light at an absorption band centered at 370 nm. Under UV-excitation a significant photocurrent increase has been observed. This is can be attributed to the large surface to volume ratio in ZnO-NWs structure, which is associated with oxygen desorption at the large ZnO-NWs surfaces that reduces the recombination rate of photogenerated free charge carriers. The optimum electrical and optical properties of the device have been observed at ZnO-NWs/Go relative ratio of 1:5. These findings could be promising for potential enhanced UV-detectors and flexible optoelectronics devices.