This is potentially a very exciting breakthrough for hearing aid users if it can be miniaturized 
Researchers at Flinders University, Australia, appear to have solved one of the most persistent obstacles facing aqueous zinc-iodine batteries: their short operational lifespan. Publishing their findings in Angewandte Chemie, the research team reportedly developed a battery that can withstand more than 60,000 charge-discharge cycles while fully recharging in as little as three minutes. Depending on the operating settings, the cells run at 1.3 to 1.4 volts and deliver either 200 mAh/g across 8,000 cycles with a seven-minute charge, or a reduced 150 mAh/g across the much larger 60,000-cycle figure. The degradation rate is reported to be as low as 0.0001% to 0.0003% per cycle. - Jacob Fisher at Notebookcheck
Zinc-iodine alternatives offered a water-based, non-flammable escape route. But the face the “shuttle effect,1” where polyiodine species leak through the battery separator and degrade performance over time. That is where starch changes the game.
The team solved this by creating a host material using a low-cost, biodegradable cyclodextrin-based polymer (derived from starch) that traps and releases polyhalides.
Cyclodextrin molecules are widely used in cosmetics and food. The Flinders team engineered a microscopic cage. Its hydrophilic exterior and hydrophobic interior trap and release polyhalides on demand, stopping the leakage cold. - **Mrigakshi Dixit **of Interesting Engineering
You’re ignoring this member’s posts.
Poland