Metalorganic Deposition of YBCO Films for Second-Generation High-Temperature Superconductor Wires

MRS Bulletin ◽  
2004 ◽  
Vol 29 (8) ◽  
pp. 572-578 ◽  
Author(s):  
Martin W. Rupich ◽  
Darren T. Verebelyi ◽  
Wei Zhang ◽  
Thomas Kodenkandath ◽  
Xiaoping Li
Keyword(s):  
High Temperature ◽  
High Performance ◽  
High Temperature Superconductor ◽  
Second Generation ◽  
Ybco Film ◽  
Low Cost ◽  
High Rate ◽  
Ybco Films ◽  
Metalorganic Deposition ◽  
Film Fabrication

AbstractMetalorganic deposition (MOD) is an attractive process for low-cost, high-rate deposition of YBa2Cu3O7– (YBCO) films on continuous lengths of biaxially textured metallic templates for second-generation (2G) high-temperature superconductor (HTS) wires.MOD of YBCO films involves four steps:precursor synthesis, coating, decomposition, and reaction.The final films must meet stringent requirements, including high critical current, uniformity across the width and along the length of the textured substrate, and excellent mechanical properties.Achieving these properties has required the development of a metalorganic precursor that produces an intermediate BaF2-based film, which in turn is converted to a high-quality YBCO film.Understanding and controlling the deposition of the metalorganic precursor and its conversion to YBCO are critical to reproducibly manufacturing uniform, high-performance, HTS wires required for commercial applications.This article reviews the issues that must be addressed in the use of MOD for low-cost YBCO film fabrication and summarizes the performance of 2G HTS wires prepared by this manufacturing process.

Viewpoint on the manuscript by Zachary S. Hartwig et al “VIPER: An industrially scalable high current, high temperature superconductor cable” 2020 Supercond. Sci. Technol. 33

2021 ◽  
Author(s):  
Michael Parizh
Keyword(s):  
High Temperature ◽  
High Performance ◽  
High Temperature Superconductor ◽  
High Current ◽  
A Current

Abstract HTS tokamak SPARC is under development by the team lead by CFS, Cambridge, MA. The magnet will have toroidal coils operating at 20 T at a current in the 25 to 40 kA range. The ViewPoint describes VIPER, an advanced TSTC-based HTS cable that has a potential to meet all the criteria required for the HTS tokamak. If proven to be successful, the cable approach promises long lengths, hundreds of meters, of the high-performance cable with predictable and repeatable properties.

Low-cost, flexible graphene/polyaniline nanocomposite paper as binder-free high-performance supercapacitor electrode

2014 ◽  
Vol 07 (06) ◽  
pp. 1440010 ◽  
Author(s):  
Li Wang ◽  
Siliu Lv ◽  
Jianming Zhang ◽  
Chuanjian Zhang ◽  
Shanmu Dong ◽  
...  
Keyword(s):  
High Performance ◽  
Low Cost ◽  
Rolling Process ◽  
High Rate ◽  
Graphene Sheets ◽  
Supercapacitor Electrode ◽  
Binder Free ◽  
Paper Fabrication ◽  
Composite Paper ◽  
Polyaniline Nanocomposite

Nanopolyaniline coated graphene (GNP) was synthesized and flexible composite paper based on as-prepared GNP composite was fabricated by rolling process. Uniform PANI nanocoating prevents the graphene sheets from re-stacking during paper fabrication under high pressure. The composite paper was directly used as the supercapacitor without adding any binder and a specific capacitance of 255 F g-1 was achieved with high rate retention.

Pulse Magnetization Studies on Partially Slit Second-Generation High-Temperature Superconductor Tape

2015 ◽  
Vol 25 (3) ◽  
pp. 1-4 ◽  
Author(s):  
Edward Chen ◽  
Devdatta P. Kulkarni ◽  
Haran Karmaker ◽  
Dean Sarandria ◽  
Leslie Bromberg
Keyword(s):  
High Temperature ◽  
High Temperature Superconductor ◽  
Second Generation ◽  
Pulse Magnetization ◽  
Superconductor Tape

YBCO FILMS DOPING WITH SZO PARTICLES GROWN BY CHEMICAL SOLUTION DEPOSITION

2009 ◽  
Vol 23 (17) ◽  
pp. 3532-3537
Author(s):  
MIN LIU ◽  
DONGQI SHI ◽  
QI LI ◽  
LIN WANG ◽  
SHUAI YE ◽  
...  
Keyword(s):  
Ybco Film ◽  
Low Cost ◽  
Pinning Force ◽  
X Ray Diffraction ◽  
Solution Deposition ◽  
Ybco Films ◽  
X Ray ◽  
Metal Organic ◽  
Increasing Temperature ◽  
Applied Fields

YBa 2 Cu 3 O 7-δ ( YBCO ) films with SrZrO 3 ( SZO ) doping have been prepared successfully by a non-vacuum, low cost, and easily scalable metal–organic deposition method, and their microstructures and physical properties were investigated. From the analysis of x-ray diffraction and φ-scan results, the doped films had sharp biaxial textures. Although the doped YBCO film had a wider critical temperature transition width than that of the un-doped YBCO film, the critical current density, J c , was significantly enhanced under applied fields as compared to the un-doped film. Furthermore, the ratio of J c , doped to J c , un-doped became gradually larger with increasing temperature and magnetic field, indicating that an effective pinning force was created by SZO doping. These results clearly demonstrate that there are appealing prospects for applications of the doped film in high magnetic fields and temperatures.

Oxygen loading in second-generation high-temperature superconductor tapes

2006 ◽  
Vol 6 (3) ◽  
pp. 511-514
Author(s):  
N.M. Strickland ◽  
G.V.M. Williams ◽  
Anita Semwal ◽  
D.T. Verebelyi ◽  
W. Zhang
Keyword(s):  
High Temperature ◽  
High Temperature Superconductor ◽  
Second Generation

Thermal Model for the AC Armature Winding of a High Temperature Superconductor Airborne Motor

2005 ◽  
Author(s):  
A. M. Morega ◽  
J. C. Ordonez ◽  
J. V. C. Vargas
Keyword(s):  
High Temperature ◽  
High Performance ◽  
High Temperature Superconductor ◽  
Variable Magnetic Field ◽  
Thermal Design ◽  
Magnetic Field Effects ◽  
Electromagnetic Design ◽  
Circuit Simulator ◽  
Low Weight ◽  
Preliminary Study

This paper describes a preliminary study on a cooling concept for an airborne high performance synchronous motor that has a High Temperature Superconductor (HTS) field winding: whereas the rotor is actually an HTS DC field winding, the armature is an AC copper winding, mounted in an iron-less stator — a so-called “air winding”. The efforts aimed at prototyping a low weight/volume motor lead to a dedicated thermal design where an important role is played by the thermal management of the AC winding, which is the siege of intense power dissipation by Joule and variable magnetic field effects. The analysis reveals thermal constraints that are overlooked by the initial, first stage electromagnetic design and that need to be addressed. The thermal analysis reported here is based on equivalent, lumped thermal circuits: (a) a simplified circuit, aimed at delivering fast, design class results, that may be solved analytically; (b) more complex schemes aimed at assessing variable regimes, which are solved numerically by a circuit simulator. Both approaches are valuable, and complement each other in the quest for a meaningful preliminary design.

Effect of Different Iron Sources on In-Situ Growth of Zeolitic Imidazolate Frameworks-8: For Efficient Oxygen Reduction Electrocatalysts

2021 ◽  
Vol 21 (10) ◽  
pp. 5319-5328
Author(s):  
Sha-Sha Luo ◽  
Yu-Meng Ma ◽  
Peng-Wei Li ◽  
Ming-Hua Tian ◽  
Qiao-Xia Li
Keyword(s):  
Catalytic Activity ◽  
High Temperature ◽  
Oxygen Reduction ◽  
High Performance ◽  
Low Cost ◽  
Three Dimensional ◽  
Precious Metals ◽  
High Catalytic Activity ◽  
Zeolitic Imidazolate Frameworks ◽  
Wide Range

Transition metal and nitrogen co-doped carbon-based catalysts (TM-N-C) have become the most promising catalysts for Pt/C due to their wide range of sources, low cost, high catalytic activity, excellent stability and strong resistance to poisoning, especially Fe–N–C metal-organic frameworks (MOFs), which are some of the most promising precursors for the preparation of Fe–N–C catalysts due to their inherent properties, such as their highly ordered three-dimensional framework structure, controlled porosity, and tuneable chemistry. Based on these, in this paper, different iron sources were added to synthesis a sort of zeolitic imidazole frameworks (ZIF-8). Then the imidazole salt in ZIF-8 was rearranged into high N-doped carbon by high-temperature pyrolysis to prepare the Fe–N–C catalyst. We studied the physical characteristics of the catalysts by different iron sources and their effects on the catalytic properties of the oxygen reduction reaction (ORR). From the point of morphology, various iron sources have a positive influence on maintaining the morphology of ZIF-8 polyhedron. Fe–N/C–Fe(NO3)3 has the same anion as zinc nitrate, and can maintain a polyhedral morphology after high-temperature calcination. It had the highest ORR catalytic activity compared to the other four catalyst materials, which proved that there is a certain relationship between morphology and performance. This paper will provide a useful reference and new models for the development of high-performance ORR catalysts without precious metals.

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