Rice University’s laser-induced graphene makes simple, powerful energy storage possible
Rice University researchers who pioneered the development of laser-induced graphene have configured their discovery into flexible, solid-state microsupercapacitors that rival the best available for energy storage and delivery.
The devices developed in the lab of Rice chemist James Tour are geared toward electronics and apparel. They are the subject of a new paper in the journalAdvanced Materials.
Microsupercapacitors are not batteries, but inch closer to them as the technology improves. Traditional capacitors store energy and release it quickly (as in a camera flash), unlike common lithium-ion batteries that take a long time to charge and release their energy as needed.
Rice’s microsupercapacitors charge 50 times faster than batteries, discharge more slowly than traditional capacitors and match commercial supercapacitors for both the amount of energy stored and power delivered.
The devices are manufactured by burning electrode patterns with a commercial laser into plastic sheets in room-temperature air, eliminating the complex fabrication conditions that have limited the widespread application of microsupercapacitors. The researchers see a path toward cost-effective, roll-to-roll manufacturing.
“It’s a pain in the neck to build microsupercapacitors now,” Tour said. “They require a lot of lithographic steps. But these we can make in minutes: We burn the patterns, add electrolyte and cover them.”
Their capacitance of 934 microfarads per square centimeter and energy density of 3.2 milliwatts per cubic centimeter rival commercial lithium thin-film batteries, with a power density two orders of magnitude higher than batteries, the researchers claimed. The devices displayed long life and mechanical stability when repeatedly bent 10,000 times.
Their energy density is due to the nature of laser-induced graphene (LIG). Tour and his group discovered last year that heating a commercial polyimide plastic sheet with a laser burned everything but the carbon from the top layer, leaving a form of graphene. But rather than a flat sheet of hexagonal rings of atoms, the laser left a spongy array of graphene flakes attached to the polyimide, with high surface area.
The Latest on: Microsupercapacitors
via Google News
The Latest on: Microsupercapacitors
- Insights into the Worldwide Supercapacitors Industry to 2026 - COVID-19 has had an Adverse Impact on the Marketon May 25, 2020 at 2:48 am
Dublin, May 25, 2020 (GLOBE NEWSWIRE) -- The "Global Supercapacitors Market - Products, Modules and Applications" report has been added to ResearchAndMarkets.com's offering. The global market for ...
- Global Supercapacitors Market (2020 to 2026) - Products, Modules and Applications - ResearchAndMarkets.comon May 22, 2020 at 8:11 am
DUBLIN--(BUSINESS WIRE)--The "Global Supercapacitors Market - Products, Modules and Applications" report has been added to ResearchAndMarkets.com's offering. The global market for supercapacitors ...
- Global Supercapacitors Market (2020 to 2026) - Products, Modules and Applications - ResearchAndMarkets.comon May 22, 2020 at 7:22 am
The "Global Supercapacitors Market - Products, Modules and Applications" report has been added to ResearchAndMarkets.com's offering. The global market for supercapacitors is the largest, and also the ...
- Future batteries, coming soon: Charge in seconds, last months and power over the airon May 22, 2020 at 7:02 am
Scientists at Rice University have made a breakthrough in micro-supercapacitors. Currently, they are expensive to make but using lasers that could soon change. By using lasers to burn electrode ...
- Micro-Supercapacitors Market Detailed Analysis of Current Industry Figures With Forecasts Growth by 2026|on May 21, 2020 at 3:08 am
Complete study of the global Micro-Supercapacitors market is carried out by the analysts in this report, taking into consideration key factors like drivers, challenges, recent trends, opportunities, ...
- Power/Performance Bits: April 30on April 29, 2020 at 5:00 pm
“But our findings show that all-MXene printed micro-supercapacitors, made with an advanced inkjet printer, are an order of magnitude greater than existing energy storage devices made from other ...
- Yury Gogotsi, PhDon June 20, 2017 at 3:54 am
Tiny Micro-Supercapacitors Built Directly On a Chip Research by a team of international material scientists, including Yury Gogotsi, PhD, Distinguished University and Trustee Chair professor in the ...
- How boron could improve wearable techon May 18, 2015 at 7:19 am
The two-step process produces microsupercapacitors with four times the ability to store an electrical charge and 5 to 10 times the energy density of the earlier, boron-free version. The new ...
via Bing News