Rice University researchers invented a nanotube-based solid supercapacitor. It is expected to integrate the best properties of high-energy batteries and fast-charge capacitors in one device for use in extreme environments. The relevant research results were published in the Carbon Magazine.
Electric double layer capacitors (EDLCs), commonly referred to as supercapacitors, have several hundred times more energy than battery-powered, fast-burst standard capacitors used to regulate flow or supply power, as well as the ability to quickly charge and discharge. However, traditional EDLCs based on liquid or gel electrolytes can fail under overheating or undercooling conditions. The supercapacitor developed by the Rice team replaced the electrolyte with a solid nanometer surface layer of an oxide dielectric, avoiding this problem.
The key to supercapacitors is to allow electrons to have more surface area in their habitats, and nothing on the planet has more advantages than carbon nanotubes in this area. When put into use, nanotubes will self-assemble into dense, aligned structures. When converted into self-contained supercapacitors, each nanotube bundle is 500 times longer than its width, and a small chip may have tens of millions of nanobeams.
The Rice team first cultivated a large array of 50-micron arrays of nano-beam single-walled carbon nanotubes ranging from 15 nanometers to 20 nanometers for this new device. This array will in turn be converted into a copper electrode whose coating consists of gold and titanium, which helps it to improve adhesion and electrical stability. To improve the conductivity, nanotube bundles (original electrodes) are doped with **, and then coated with aluminum oxide (dielectric layer) and aluminum-doped zinc oxide by atomic layer deposition (ALD). The film of the counter electrode).
This type of energy storage device has a wide range of applications, from chips as small as nanocircuits to large power plants. Researcher Kari-Pinter said that no one has built this device with such a high aspect ratio material and ALD-like methods. "This supercapacitor can have a charge at high frequency cycles and can be naturally incorporated into the material."
Robert Hogg, a chemist at Rice Labs, said the new supercapacitor is stable and expandable. "All solid-state solutions for energy storage will be tightly integrated into many devices, including flexible displays, biological implants, multiple sensors and other electronic devices. They all benefit from rapid charging and discharging."
Electric double layer capacitors (EDLCs), commonly referred to as supercapacitors, have several hundred times more energy than battery-powered, fast-burst standard capacitors used to regulate flow or supply power, as well as the ability to quickly charge and discharge. However, traditional EDLCs based on liquid or gel electrolytes can fail under overheating or undercooling conditions. The supercapacitor developed by the Rice team replaced the electrolyte with a solid nanometer surface layer of an oxide dielectric, avoiding this problem.
The key to supercapacitors is to allow electrons to have more surface area in their habitats, and nothing on the planet has more advantages than carbon nanotubes in this area. When put into use, nanotubes will self-assemble into dense, aligned structures. When converted into self-contained supercapacitors, each nanotube bundle is 500 times longer than its width, and a small chip may have tens of millions of nanobeams.
The Rice team first cultivated a large array of 50-micron arrays of nano-beam single-walled carbon nanotubes ranging from 15 nanometers to 20 nanometers for this new device. This array will in turn be converted into a copper electrode whose coating consists of gold and titanium, which helps it to improve adhesion and electrical stability. To improve the conductivity, nanotube bundles (original electrodes) are doped with **, and then coated with aluminum oxide (dielectric layer) and aluminum-doped zinc oxide by atomic layer deposition (ALD). The film of the counter electrode).
This type of energy storage device has a wide range of applications, from chips as small as nanocircuits to large power plants. Researcher Kari-Pinter said that no one has built this device with such a high aspect ratio material and ALD-like methods. "This supercapacitor can have a charge at high frequency cycles and can be naturally incorporated into the material."
Robert Hogg, a chemist at Rice Labs, said the new supercapacitor is stable and expandable. "All solid-state solutions for energy storage will be tightly integrated into many devices, including flexible displays, biological implants, multiple sensors and other electronic devices. They all benefit from rapid charging and discharging."
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