- iSDaily Wednesday – March 14th, 2018 – Episode 042
On this episode of iSDaily Wednesday with The One True Niz and Paul Gordon, On NewsFire, the Cattle Car Guide Rally of 2018 On Skynetter, Google Helps Killer Drones On Liberty Tech, Printing Cars in China [...]The post iSDaily Wednesday – March 14th, 2018 – Episode 042 appeared first on iState. […]
Aluminum -ion batteries have a lot benefits when compared to other batteries. They are cheaper to produce, they are not flammable, and they have high energy capacity storage. But one of the shortcomings of aluminum-ion batteries is a very poor cathodic performance, or how fast it transfers energy.
A scientist is proposing a new technique that could dramatically speed up that exchange and bring Aluminum-ion batteries in line with Li-ion batteries, while retaining all the advantages the aluminum-ion batteries have over li-ion batteries.
Aluminum-ion batteries (AIB) have significant merits of low cost, non-flammability, and high-capacity metallic aluminum anodes based on three-electron redox properties. However, due to its inadequate cathodic performance, especially in terms of capacity, high-rate capability, and cycle life, AIB still cannot compete with Li-ion batteries and supercapacitors.
A research team led by GAO Chao, a professor in ZJU’s Department of Polymer Science and Engineering, has proposed a “trihigh tricontinuous (3H3C) design” to achieve the ideal graphene film (GF-HC) cathode with excellent electrochemical performances.
The ordered assembly of graphene liquid crystal leads to a highly oriented structure satisfying requirement. High temperature annealing and concomitant gas pressure contribute to high-quality yet high channeling graphene structure simultaneously. Owing to this targeted 3H3C design, the resulting aluminum-graphene battery (Al-GB) achieves an ultralong cycle life (91.7 percent retention after 250,000 cycles), unprecedented high-rate capability (111 mAh g−1 at 400 A g−1 based on the cathode), a wide operation temperature range (−40° to 120°C), unique flexibility, and nonflammability.