Electrochemical codeposited polypyrrole–tungsten oxide composite materials with wide potential windows

Abstract

The three-dimensional morphology has sufficient interface contact and can be in favor of the electronic transport process. In this work, the demand for highperformance electrodes such as energy storage devices has been designed. Polypyrrole and tungsten oxide composite materials (PPy-WO 3) have been synthesized by cyclic voltammetry (CV) technology at −0.6 to 0.9 V versus saturated calomel electrode (SCE) for 20 cycles. The PPy-WO 3 20 mV/s , PPy-WO 3 60 mV/s , and PPy-WO 3 120 mV/s electrodes have been prepared by CV technology at sweep rates of 20, 60, and 120 mV/s. The influences of scan rate on morphologies and charge storage properties of the composites are discussed. Among them， a three-dimensional flake structure for PPy-WO 3 20 mV/s with a size of up to several micrometers was synthesized. PPy-WO 3 20 mV/s composites

Thermal conductivity enhancement for CuO nanoflakes in oil‐based and oil blend‐based nanofluids

“…Nanofluids are a colloidal suspension of nanoparticles with a size of 1-100 nm dispersed in base fluids, which may be water, oil, ethylene glycol, and other organic liquids. [12][13][14][15][16] Nanofluids are exploited in various applications such as the cooling performance of smart and advanced computer devices, damping and sealing, removal of ions, thermal energy storage, biomedical applications, and renewable energy applications. [17][18][19][20][21] Applications of nanofluids in drug delivery, polymerase chain reaction, cancer treatment, and antibacterial activity are concluded by Thakur et al [22] One of the important areas of application of nanofluids is heat transfer.…”