A new company Tenka Energy, LLC ™ has been formed to exploit and commercialize the Next Generation Super-Capacitors and Batteries. The opportunity is based on Nanoporous-Nickel Flexible Thin-Form, Scalable Super Capacitors and Si-Nanowire Battery Technologies with Exclusive IP Licensing Rights from Rice University.
… Problem 1: Current capacitors and batteries being supplied to the relevant markets lack the sustainable power density, discharge and recharge cycle and warranty life. Combined with a weight/ size challenge and the lack of a ‘flexible form factor’, existing solutions lack the ability to scale and manufacture at Low Cost, to satisfy the identified industries’ need for solutions that provide commercial viability & performance.
Solution: For Marine & Drone Batteries – Medical Devices
- High Energy Density = 2X More Time on the Water; 2X Flight Time for Drones
- Simplified Manufacturing = Lower Costs
- Simple Electrode Architecture = Flex Form Factor (10X Energy Density Factor)
- Flexible Form = Dramatically Less Weight and Better Weight Distribution
- Easy to Scale Technology
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Drones are used for various applications such as aero picturing, disaster recovery, and delivering. Despite attracting attention as a new growth area, the biggest problem of drones is its small battery capacity and limited flight time of less than an hour. A fuel cell developed by Prof. Gyeong Man Choi (Dept. of Materials Science and Engineering) and his research team at POSTECH can solve this problem.
Prof. Choi and his Ph.D. student Kun Joong Kim have developed a miniaturized solid oxide fuel cell (SOFC) to replace lithium-ion batteries in smartphones, laptops, drones, and other small electronic devices. Their results were published in the March edition of Scientific Reports, the sister journal of Nature.
Their achievement has been highly evaluated because it can be utilized, not only for a small fuel cell, but also for a large-capacity fuel cell that can be used for a vehicle.
The SOFC, referred to as a third-generation fuel cell, has been intensively studied since it has a simple structure and no problems with corrosion or loss of the electrolyte. This fuel cell converts hydrogen into electricity by oxygen-ion migration to fuel electrode through an oxide electrolyte. Typically, silicon has been used after lithography and etching as a supporting component of small oxide fuel cells. This design, however, has shown rapid degradation or poor durability due to thermal-expansion mismatch with the electrolyte, and thus, it cannot be used in actual devices that require fast On/Off.
The research team developed, for the first time in the world, a new technology that combines porous stainless steel, which is thermally and mechanically strong and highly stable to oxidation/reduction reactions, with thin-film electrolyte and electrodes of minimal heat capacity. Performance and durability were increased simultaneously. In addition, the fuel cells are made by a combination of tape casting-lamination-cofiring (TLC) techniques that are commercially viable for large scale SOFC.
The fuel cells exhibited a high power density of ~ 560 mW cm-2 at 550 oC. The research team expects this fuel cell may be suitable for portable electronic devices such as smartphones, laptops, and drones that require high power-density and quick on/off. They also expect to develop large and inexpensive fuel cells for a power source of next-generation automotive.
With this fuel cell, drones can fly more than one hour, and the team expects to have smartphones that charge only once a week.
This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology.
Inside the Otis Air National Guard Base—in Cape Cod, Mass.—the commercial DJI Flamewheel drone zipped down a row lined with cardboard boxes and tarps. At the end of the row, it smacked against the aircraft hangar’s floor, bounced, and tumbled to a stop.
The Defense Advanced Research Project Agency (DARPA) is playing with commercial drones. Well, not so much playing as experimenting.
Recently, DARPA’s Fast Lightweight Autonomy (FLA) program completed their first-flight data collection. In it, the program’s three performer teams demonstrated the commercial drone’s capability of reaching manned speeds up to 20 m/s, or 45 mph, and successfully navigating obstacles at slower speeds without human aid.
“Very lightweight UAVs (Unmanned Aerial Vehicles) exist today that are agile and can fly faster than 20 m/s, but they can’t carry sensors and computation to fly autonomously in cluttered environments,”said the program’s manager Mark Micire. “And large UAVs exist that can fly high and fast with heavy computing payloads and sensors on board. What makes the FLA program so challenging is finding the sweetspot of a small size, weight and power air vehicle with limited onboard computing power to perform a complex mission completely autonomously.”
The drone—outfitted with E600 motors, 12 in. propellers, and a 3DR Pixhawk autopilot—carried a variety of high-definition cameras and sensors, such as LIDAR, sonar, and inertial measuring instruments.
The three performances teams included Draper, which teamed with Massachusetts Institute of Technology; Univ. of Pennsylvania; and Scientific Systems Company, Inc., which teamed with AeroVironment.
According to Defense News, DARPA was offering $5.5 million in research funding for the program.
“We’re excited that we were able to validate the airspeed goal during the first-flight data collection,” said Micire. “The fact that some teams also demonstrated basic autonomous flight ahead of schedule was an added bonus. The challenge for the teams now is to advance the algorithms and onboard computational efficiency to extend the UAV’s perception range and compensate for the vehicles’ mass to make extremely tight turns and abrupt maneuvers at high speeds.”
Once fully developed, these drone systems will aid the military in surveillance operations, either patrolling hazardous urban environments or responding to disasters. As trials continue, the testing environment will grow more complex, with more obstacles added.