3D printing technology has demonstrated great potential in fabricating flexible and customizable high-performance batteries, which are highly desired the forthcoming intelligent ubiquitous energy era. However, a significant performance gap, especially cycling stability, still exists between 3D-printed conventional electrodes, seriously limiting practical applications of batteries. Here, for first time, series thermoplastic polyurethane (TPU)-based electrodes is developed via fused deposition...

We have formed BaZrO3 nanocolumns and (Gd,Y)2O3 nanoprecipitates in reel-to-reel metal organic chemical vapor deposition (MOCVD) processed (Gd,Y)Ba2Cu3O7−x coated conductors increased the critical currents (Ic) of applied magnetic fields to remarkable levels. A tape 1 m length with 6.5% Zr-additions 30% composition rich both Gd Y showed Ic values 813 A/cm width at (self-field, 77 K) above 186 (1 T, K). The strongly enhanced flux pinning over a wide range field orientations can be attributed...

Despite the extensive interest in solid-state lithium batteries (SSLBs), voids/gaps inside electrolyte (SSE) and between SSE-electrode interfaces significantly limit performance of SSLBs. In this work, we developed a void-free design combining an inorganic-gel hybrid with in-situ polymeric interlayers for The designed SSE enables facile Li+ ion conduction, fabricated solid polymer electrodes improves interfacial compatibility. We found that, during Li plating-stripping, property dictates...

SuperPower has successfully transferred from low throughput IBAD (Ion beam assisted deposition) YSZ technology to high MgO technology. Pilot-scale system and pilot-scale epi-buffer deposition system, each with capabilities of producing single-piece lengths over 1000 m have been established. Helix tape handling approach instead wide is chosen due its immense advantages approach. High-performance buffer stack their processes developed together where layer in the processed at 40 m/h speed or...

Abstract The performance of the lithium (Li) metal anode in rechargeable batteries has been hampered by formation unstable solid‐electrolyte interphase layers, which compromise cycle life and pose significant safety concerns. Herein, for first time, anodizing oxidation pure Li a liquid electrolyte is developed using tetrahydrofuran with LiNO 3 . With this novel process, thickness‐controllable oxide films situ nitrogen doping during process can be obtained. resulting nitrogen‐doped film (NLO)...

Abstract A novel flux‐pinning design for REBa 2 Cu 3 O 7‐δ (REBCO) films intended high‐field magnet applications is proposed, which based on BaCuO nanorods in Gd 0.5 Yb Ba (Gd BCO) films. The metal–organic chemical vapor deposition (MOCVD) process has been developed to achieve the desired microstructure. influence of MOCVD parameters microstructure and critical current behavior BCO systematically investigated. morphology density crystallites within are highly sensitive temperature, oxygen...

Multi-metal oxides (MMOs) have emerged as promising electrocatalysts for high-performance Li-O2 batteries (LOBs) because of their tailored intrinsic properties. However, the complex nature MMOs, with multiple elements involved, has made it challenging to fully comprehend electrochemical behaviour MMOs in relation metal composition. Herein, we systematically synthesized a series spinel including Ni-Co-Fe, Mn-Co-Fe, and Ni-Mn-Fe oxides, by doping Ni, Co, or Mn into Fe3O4 via hydrothermal...

Manipulating the surface reconstruction of Ni-based catalysts to form NiOOH intermediates is crucial for electrooxidation. Herein, we report a phytate coordination-induced enrichment on phytate-coordinated Ni foam, which exhibited high catalytic performance 5-hydroxymethylfurfural electro-oxidation. The HMF oxidation rate 0.76 mmol h-1 outperformed majority catalysts.

Piezoelectric ZnO thin films have been successfully used for multilayer surface acoustic wave (SAW) and bulk (BAW) devices. Magnesium zinc oxide (Mg/sub x/Zn/sub 1-x/O) is a new piezoelectric material, which formed by alloying MgO. Mg/sub 1-x/O allows flexibility in film SAW device design, as its properties can be tailored controlling the Mg composition, well using 1-x/O/ZnO structures. We report metal-organic chemical vapor deposition (MOCVD) growth, structural characterization evaluation...

BaZrO <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> (BZO) nanocolumns have long been shown to be very effective for raising the pinning force Fp of REBa xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> Cu O xmlns:xlink="http://www.w3.org/1999/xlink">x</sub> (REBCO, where RE = rare earth) films at high temperatures and recently low too. We successfully incorporated a density BZO nanorods into metal organic chemical vapor deposited...

Filamentization has been proven to be an effective way reduce the ac loss of coated conductor superconducting tapes. However, all filamentization techniques date involve material removal at some stage processing. Utilizing inkjet printing and electrodeposition, a novel, completely etch-free method fabricating multifilamentary RE-Ba-Cu-O (REBCO, <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex...

The critical current behavior of REBa2Cu3O7−δ (REBCO, with RE = Yb, Y, Ho, Dy, Gd, Eu, GdYb, DyY, GdY, EuY, SmY, GdEu, GdSm) superconducting tapes has been systematically studied for the temperature range 10–77 K, magnetic field 0–5 T and orientation (angle between tape) 0°–180°. We report that size dependencies in-field density (Jc) at low temperatures (below 40 K) are significantly different from those 77 K. In a 1–3 applied Jc REBCO films increases ionic radius (r). EuBCO film, largest r...

We have developed a thermo-compression soldering appliance for joining rare-earth barium copper oxide (REBCO) tapes with excellent control of process temperature and pressure. With this tool, we systematically investigated the effects parameters solder materials on electrical mechanical performances soldered joints between REBCO superconducting laminated stabilizers. Low resistivity about 30 nΩ·cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...

Zr:GdYBCO films were grown by reel-to-reel metal organic chemical vapor deposition (MOCVD) on hastelloy tapes with IBAD-MgO-based buffer. The composition was varied systematically to investigate the effects of changes in (Gd+Y)/Ba, (Gd+Y)/Cu and Gd/Y ratios Zr-doping concentration critical current density (J <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">c</sub> ) an applied magnetic field (B). magnetic-field-angle dependence J measured at 77 K...

Substrate surface smoothness comparable to electropolished substrate has been demonstrated by planarization of multilayers amorphous oxide films on as received flexible metal tapes. An in-plane texture 6.4 degrees was achieved short samples after the final buffer process. A critical current density (J <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">c</sub> ) over 3 MA/cm <sup xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> samples. The...

Flux pinning in REBCO (rare-earth Ba-Cu-O) by self-assembly of BZO (barium zirconate) nanorods has emerged as one the most prominent techniques for improving in-field performance 2G-HTS wire terms <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">I</i> <sub xmlns:xlink="http://www.w3.org/1999/xlink">c</sub> and angular anisotropy. In our previous study on metalorganic chemical vapor deposition wire, an optimum was found 7.5% Zr at 1 T, 77 K, while...

We report on the transport properties and pinning analysis of BaFe1.84Co0.16As2 (Ba122:Co) thin films metal tapes by pulsed laser deposition. The exhibit a large in-plane misorientation 5.6°, close to that buffer layer SrTiO3 (5.9°). Activation energy U0(H) reveals power law relationship with field, having three different exponents at field regions, indicative variation from single-vortex collective flux creep regime. Ba122:Co coated conductors present = 20.2 K 19.0 along self-field Jc 1.14...

Applications of coated conductors based on high- Tc superconductors often require detailed knowledge their critical current density Jc as a function magnetic field orientation well strength and temperature. This work demonstrates experimental methods for obtaining the angularly dependent using contact-free measurements, qualifies those several defined conditions. The studies complement traditional transport techniques are readily extended to conditions temperature where is very large become...

While the performance of YBa <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> Cu xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> O xmlns:xlink="http://www.w3.org/1999/xlink">7-x</sub> (YBCO)-based coated conductors under dc currents has improved significantly in recent years, filamentization is being investigated as a technique to reduce ac loss so that 2nd generation (2G) high temperature superconducting (HTS) wires can also be...

We experimentally demonstrate a demodulation scheme for 20 Gbaud/s nonreturn-to-zero differential quadrature phase-shift keying signals using silicon microring resonator. Either the I or Q channel can be selected by electrical tuning carrier depletion effect. Error-free (bit error rate <10(-9)) operations achieved both and channels with ~1.5 dB power penalty compared commercial GHz Mach-Zehnder delay interferometer. The range of ring resonator up to 60 GHz, which enables operation over wide...

A multipass metal organic chemical vapor deposition (MOCVD) process has been optimized to fabricate REBa <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> Cu xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> O xmlns:xlink="http://www.w3.org/1999/xlink">7-δ</sub> (REBCO) (RE= Gd+ Y with Gd/Y = 1) thin-film superconducting tapes high critical currents. Some optimum MOCVD parameters for are found be different from those single-pass process,...

<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> A leading approach to the fabrication of long-length, high-performance <formula formulatype="inline"><tex Notation="TeX">${\rm REBa}_{2}{\hbox {Cu}}_{3}{\hbox {O}}_{7}$</tex></formula> (REBCO) coated conductor is by metal-organic chemical vapor deposition (MOCVD) REBCO on buffered templates. Templates are produced ion beam assisted textured MgO onto polished metal substrates. The overall...