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Toyota's proven fuel-cell stack reduces cost, complexity in H2 semi-truck

SAE Truck & Off-Highway Engineering: June 2019

Sebastian Blanco
  • Magazine Article
  • 19TOFHP06_14
Published 2019-06-01 by SAE International in United States

Hydrogen proponents likely know that Mirai means “future” in Japanese, but Toyota is only just beginning to explore how important the fuel cell stack in its H2-powered passenger car will be to the future of the company.

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EMBATT looks to double the driving range of EVs

Automotive Engineering: June 2019

Kami Buchholz
  • Magazine Article
  • 19AUTP06_11
Published 2019-06-01 by SAE International in United States

A chassis-integrated sandwich structure of solid electrolytes currently in development is projected to deliver all-electric driving ranges that far out-distance today's typical 200-mile (320 km) EV real-world driving range. IAV, Thyssenkrupp AG and Fraunhofer Institute for Ceramic Technologies and Systems (IKTS) are the core project partners working to develop EMBATT, a chassis-embedded energy technology.

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Impact-Resistant Battery Electrolyte Solidifies When Hit

  • Magazine Article
  • TBMG-34633
Published 2019-06-01 by Tech Briefs Media Group in United States

Lithium-ion batteries commonly used in consumer electronics are notorious for bursting into flame when damaged or improperly packaged. Inspired by the unusual behavior of some liquids that solidify on impact, researchers have developed a practical and inexpensive way to help prevent these fires.

 
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Battery Electrolyte Doubles Driving Range for Electric Vehicles

  • Magazine Article
  • TBMG-34610
Published 2019-06-01 by Tech Briefs Media Group in United States

Conventional electrolytes used in lithium-ion batteries that power household electronics like computers and cellphones are not suitable for lithium-metal batteries. Lithium-metal batteries that replace a graphite electrode with a lithium electrode are the holy grail of energy storage systems because lithium has a greater storage capacity and, therefore, a lithium-metal battery has double or triple the storage capacity. That extra power enables electric vehicles to drive more than two times longer between charges.

 

Consideration of Corrosion Behavior of Aluminum Wire at Crimped Terminal and Effective Anti-Corrosion Treatment

Fujikura, Ltd.-Takuya Kawaguchi, Keiji Fukaura, Yuki Nakamura, Makoto Mochizuki, Satoshi Otani
Published 2019-04-02 by SAE International in United States
The demand for weight reduction of vehicles is growing in compliance with CO2 emission control requirements. Also, demand for copper is on the rise with an increase in the number of electric vehicles because their motors and wiring require a lot of copper. This has raised concerns about higher copper prices and vehicle weight. Recently, attempts to reduce vehicle weight have been actively made by partially replacing copper with aluminum, which is lighter and less expensive. Although the use of aluminum wires on limited areas of some vehicles has already been reported, that on all areas has not been reported yet. The authors focus on reducing weight of wiring harnesses, which is about 20 kg per vehicle, and consider using aluminum instead of copper as the conductor of the electrical wires. One of the factors impeding the use of aluminum wires in wider areas is galvanic corrosion occurring at crimped terminals. Since aluminum causes galvanic corrosion when the metal is in electrical contact with a different metal in an electrolyte, it is essential to prevent…
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Modular Biosensor Patch

  • Magazine Article
  • TBMG-34137
Published 2019-04-01 by Tech Briefs Media Group in United States

Researchers are identifying new biomarkers to help monitor cognition and stress in the human body and enhance human performance. Traditional biomarkers like heart rate, temperature, oxygen partial pressure, blood glucose, electrolyte concentration, and others have been correlated with cognition and stress states. However, the correlation is indirect. Molecular biomarkers with stronger and more specific links are preferred.

 

5 Ws of the SAFIRE Lithium-Ion Battery

  • Magazine Article
  • TBMG-33211
Published 2018-11-01 by Tech Briefs Media Group in United States

The Safe Impact Resistant Electrolyte (SAFIRE) fire-resistant battery can be used in consumer electronics such as cellphones, in drones and cars, and in soldiers’ packs.

 

Electric double layer capacitors prepared with polyvinyl alcohol and multi-walled carbon nanotubes

Carbon Sci-Tech Labs, School of Electrical and Computer Engi-Carla Giselle Martins Real, Rafael Vicentini, Willian Gonçalves Nunes, Otávio Vilas Boas, Lenon Henrique Costa, Davi Marcelo Soares, Hudson Zanin
Published 2018-09-03 by SAE International in United States
Portable electronics, wearables, electric vehicles and solar cells are sectors in increasingly development which include innovation and miniaturization of the devices. In this scenario, the development of smaller and lightweight energy storage devices, which store more energy, is required. Besides, it is desirable for these devices to be environmentally friendly to minimize pollution. In an attempt to meet these requirements, this work purposes the development and the characterization of nanofibers-based electrode composed of Polyvinyl alcohol (PVA) and multi-walled carbon nanotubes (MWCNT) for electric double layer capacitors (ELCDs) devices with aqueous electrolyte. This composite has been prepared by electrospinning technique and consolidate an electrical conductive and high-surface material electrode. After that, the PVA/MWCNT electrode was assembled in coin cell device with Sodium Sulfate (Na2SO4) electrolyte for electrochemical characterization. The characterization results showed that EDLCs devices present specific capacitance of ∼4.8 Fg-1, energy density of ∼0.1 Wh kg-1, power density of ∼600W kg-, fast charge transfer at electrode/electrolyte interface and high lifetime All these results encourage further development on PVA/MWCNT materials as electrode for EDLCs and Li-Air…
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Anodic Treatment of Magnesium Alloys Acid Type, Thin Coat

AMS B Finishes Processes and Fluids Committee
  • Aerospace Material Specification
  • AMS2479D
  • Current
Published 2018-08-23 by SAE International in United States
This specification establishes the engineering requirements for producing an acid-type, anodic coating on magnesium alloys and the properties of the coating.
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Anodic Treatment of Magnesium Alloys Acid Type, Full Coat

AMS B Finishes Processes and Fluids Committee
  • Aerospace Material Specification
  • AMS2478E
  • Current
Published 2018-08-23 by SAE International in United States
This specification establishes the engineering requirements for producing an acid-type, anodic coating on magnesium alloys and the properties of the coating.
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