TiNb6O17 and TiNb2O7 were synthesized using a solid-state method. The techniques used to assess the electrochemical performance lithium diffusion kinetics of related unit cell volume with TiNb2O7. charge-discharge curves cyclic voltammetry revealed have similar redox potential as well high discharge capacity. rate was measured capability test. SSCV EIS showed that had higher coefficients during charging. From GITT, at phase transition region largest increase from TiNb6O17.

LiδPyOz–coated LiNi0.5Co0.2Mn0.3O2 cathode materials doped with P and Si ions were prepared by direction reaction of LiOH SiP2O7-coated Ni0.5Co0.2Mn0.3(OH)2 precursors. The coated cathodes exhibited quite impressive results; rate capability was improved almost 100% at a 7 C compared to pristine LiNi0.5Co0.2Mn0.3O2. Furthermore, the amount heat generation 4.5 V charge cut-off as result evolution oxygen reduced 79%, sample.

This paper presents the battery charging algorithm for electric vehicle. In order to charge main bank EV, safety and time must be contemplated. The charger also requires that it is a capable of high power capacity. Therefore, three-phase AC-DC boost converter suitable EV. For applications above several kilowatts system LCL-filter more attractive than L-filter. filter design, contemplating minimum value reactor. conjunction with hardware charger, important development charger. required reduce...

Energy harvesting, especially for powering low-power internet-of-things (IoT) devices, is gaining attention in recent years. Triboelectric nanogenerators have been studied to improve the output by applying a structure that can concentrate electrons on surface of generator materials. For enhancing triboelectrification output, we herein focused power line. A method increasing amount lead potential difference and their acceleration was studied. rod shaken external vibrations; accumulated...

This paper presents a theoretical and experimental strategy for thermal de-isolation of silicon microstructures during plasma etching process. Heat sinking blocks thin metal layers are implemented around thermally isolated mass to avoid severe spring width losses by steep temperature rise. Thermal significantly reduces the fabrication errors from −51.0% −9.0% −39.5% −6.7% widths resonant frequencies, respectively. also standard deviation frequencies 8.7% 1.5% across wafer, which clearly...

This paper presents the new concept of RF MEMS silicon contact switch and its verification for high isolation at 50-110 GHz. A is achieved by locating floating top electrode 30 ¿m apart from bottom coplanar waveguide (CPW) signal line in lateral direction initial off-state. The realized dual axis movement, namely a movement comb electrodes following vertical electrode. actuation voltages are measured movement. was GHz to prove improvement using

Medical magnetrons to operate the medical linear accelerator (LINAC) are widely used for radiation therapy systems. The operation performances of LINAC generating high energy X-ray treat cancers depends on RF medial magnetron. 9.3 GHz coaxial magnetron is investigated by using three-dimensional particle-in-cell simulation analyze performances. maximum output power 1.88 MW with efficiency 53 % measured at stable π-mode resulted from 20-electron spokes. And, frequency bandwidth controlled...

Abstract Li2(OH)0.9F0.1Cl, Li2(OH)0.9Br0.1Cl, and Li2OHCl0.8Br0.2 solid electrolytes were synthesized compared with Li2OHCl to analyze the exact improvement mechanism for Li+ conductivity electrochemical stability of Li2OHX-type electrolyte. The substituted materials exhibit improved Li2OHCl. Among these materials, Li(OH)0.9F0.1Cl has due a reduction OH– concentration was also increased large interstitial site. In case it had highest good migration by both effects because larger site low OH−...

Nano Aerial Vehicles have become widely used for a variety of complex missions due to their mobility and the ability access hard-to-reach areas. In most cases, these tasks require vehicles land on ground targets or perch platforms mounted diverse surfaces. Considering surface vehicle will reach, controlling perching is obviously challenging task. Besides, reliability target position direction estimation has significant impact performance. this paper, multi-sensor-based pose autonomous...

P-type Cu-Se thin films were deposited on glass substrates at room temperature using radio frequency magnetron sputtering by a single multi-component CuSe2 target. When target, the impact of power homogeneity and stoichiometry within should be investigated in depth direction to demonstrate secondary effect electrical optical properties films. Systematic characterization films, including morphology, microstructure, chemical composition, depth-directional bonding state defect structure...

This paper reports a low-loss RF MEMS silicon switch that employs reflowed glass as structural material beneath contact metal. The structure is inserted into substrate through the reflow process to reduce insertion loss of switch. To verify this enhancement in characteristic, two types switches were fabricated with different materials underneath metal: or glass. reference totally made silicon. In frequency range 5 30 GHz, S-parameter measurements carried out and losses measured 0.12 ~ 0.33...

Electron linear accelerators are used as x-ray generators for diagnosing the human body. In this paper conceptual design of electron beam compact gun was calculated by using EGN2w and CST-Particle Studio codes. The structure Pierce diode type specification selected 500 cGy/min. Specifications designed were focused on current, size normalized emittance. Optimized diameter emittance 226.88 mA, 0.689 mm (Full width) 1.03π mm· mrad, respectively two simulation Accuracy verified comparison...

This paper presents how to design a converter that robust the load variable. The proposed LLC resonant can control output voltage by applying phase-shift switching method. In this paper, first It was describe configuration of Phase Control LLC(PCLLC) converter. After that, input is analyzed harmonic approximation analysis. Then, principle operation for explained each mode.

We fabricated and characterized the magnetoelectric (ME) properties of 3-0 ME composite materials comprised high piezoelectric voltage coefficient material, 0.9Pb(Zr0.52Ti0.48)O3-0.1 Pb(Zn1/3Nb2/3)O3 + 0.005Mn (PZT-PZN), magnetostrictive Ni0.8Zn0.2Fe2O4 (NZF). As effect is generated by product coupling between properties, NZF content should be optimized for a higher coefficient. The dielectric constant spontaneous polarization (P) were decreased with increasing before percolation...

Over the past decades, quadcopters have been investigated, due to their mobility and flexibility operate in a wide range of environments. They used various areas, including surveillance monitoring. During mission, drones do not remain active once they reached target location. To conserve energy maintain static position, it is possible perch stop motors such situations. The problem achieving reliable highly accurate perching method remains challenge promising. In this paper, vision-based...