A KAIST research team developed a new hybrid energy storage device that can be charged in less than half a minute.
It employs aqueous electrolytes instead of flammable organic solvents, so it is both environmentally friendly and safe. It also facilitates a boosting charge with high energy density, which makes it suitable for portable electronic devices.
Professor Jeung Ku Kang and his team from the Graduate School of Energy, Environment, Water, and Sustainability developed this hybrid energy storage with high energy and power densities along over a long cycle life by assembling fibre-like polymer chain anodes and sub-nanoscale metal oxide cathodes on graphene.
Conventional aqueous electrolyte-based energy storage devices have a limitation for boosting charges and high energy density due to low driving voltage and a shortage of anode materials.
Energy storage device capacity is determined by the two electrodes, and the balance between cathode and anode leads to high stability. In general, two electrodes show differences in electrical properties and differ in ion storage mechanism processes, resulting in poor storage and stability from the imbalance.
The research team came up with new structures and materials to facilitate rapid speed in energy exchange on the surfaces of the electrodes and minimize the energy loss between the two electrodes.
The team made anodes with graphene-based polymer chain materials. The web-like structure of graphene leads to a high surface area, thereby allowing higher capacitance.
For cathode materials, the team used metal oxide in sub-nanoscale structures to elevate atom-by-ion redox reactions. This method realized higher energy density and faster energy exchange while minimizing energy loss.
The developed device can be charged within 20 to 30 seconds using a low-power charging system, such as a USB switching charger or a flexible photovoltaic cell. The developed aqueous hybrid energy device shows more than 100-fold higher power density compared to conventional aqueous batteries and can be rapidly recharged. Further, the device showed high stability with its capacity maintained at 100% at a high charge/discharge current.
Professor Kang said, “This eco-friendly technology can be easily manufactured and is highly applicable. In particular, its high capacity and high stability, compared to existing technologies, could contribute to the commercialization of aqueous capacitors. The device can be rapidly charged using a low-power charging system, and thus can be applied to portable electronic device.”
The Latest on: Energy storage device
- Putting underused smart devices to work on September 19, 2018 at 6:29 am
The storage, networking ... Explore further: Mathematicians suggest exchanging wireless energy for data collected by sensors in mobile devices More information: Per-Olov Östberg, James Byrne ... […]
- ElectrIQ Power Announces Their Latest Home Energy Storage System, the ElectrIQ PowerPod, and Amazon Alexa Integration on September 18, 2018 at 5:01 am
Alexa is joining other device integrations in the IQ System which help to ... About ElectrIQ Power ElectrIQ Power is an energy storage company developing hardware and software solutions for the clean ... […]
- Stem to Deploy AI-Powered Energy Storage for Solvay in Ontario, Canada on September 17, 2018 at 6:43 am
Intelligent energy storage systems are promising technologies to decouple ... Its products are used in planes, cars, batteries, smart and medical devices, as well as in mineral and oil and gas extract... […]
- Darfon expects green energy business to break even in 4Q18 on September 16, 2018 at 8:04 pm
PV micro-inverters and energy storage devices to reach break-even point in fourth-quarter 2018 and become profitable beginning 2019, according to company chairman Andy Su. Darfon has exported BESV bic... […]
- Advanced Battery Energy Storage System Market– Transformation Survey 2025 on September 12, 2018 at 5:23 pm
Energy storage is referred to as the capturing of energy produced at one point of time for future use. A device that is used for storing energy is often known as an accumulator. Energy is found in mul... […]
- Braille Energy Systems Completes the First Year of its Four Year Deal as the Exclusive Supplier of Approved Batteries for the Verizon IndyCar Series on September 12, 2018 at 2:06 pm
solar and wind energy storage as well as portable electronic devices. With two manufacturing locations in North America, BESI will provide customers with security of supply, off-the-shelf shipments an... […]
- EVs can function as energy storage systems on September 11, 2018 at 8:46 pm
With maximized use of renewable energy, EVs' batteries can function as mobile energy storage devices to supply electricity from batteries to power grids via V2G-enabled two-way smart charging stations ... […]
- Energy Storage Devices Market Know the Key Growth Drivers, Developments and Innovations by 2020 on September 11, 2018 at 3:33 pm
Future Market Insights has announced the addition of the “Energy Storage Devices Market: ASEAN Industry Analysis and Opportunity Assessment 2014 - 2020" report to their offering. Valley Cottage, NY -- ... […]
- IRS Sheds New Light on Solar Tax Credits, Leaves Energy Storage in the Dark on September 11, 2018 at 11:48 am
The IRS is still catching up to the emerging industry's innovations. The IRS has defined solar "energy property" in its regulations as including "storage devices, power conditioning equipment, transfe... […]
- California regulators approve measures to propel energy storage, DERs on September 7, 2018 at 7:19 am
The proposal approved for energy storage would allow BTM batteries to more easily ... In addition, it would allow a storage device to enter separate bids for charging and discharging. That would help ... […]
via Google News and Bing News