I D
× COMMENTARYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEENGINEERING PRACTICEENVIRONMENTAL MANAGEREQUIPMENT & SERVICESFOCUS
Focus on Valves
Safe combustible-dust-explosion isolation Isolation is essential to protect adjoining system…
NEW PRODUCTS + Show More

Comment

Rechargeable MnO2-Zn batteries with a higher voltage

By Scott Jenkins |

Researchers at the City University of New York Energy Institute (ccny.cuny.edu) have developed a low-cost battery based on manganese dioxide and zinc that reaches voltages of greater than 2 V, a first-time achievement that could allow batteries with these low-cost raw materials to compete with lithium-ion batteries. Alkaline MnO2/Zn batteries are familiar as primary (one-time discharge) batteries for small electronics, but they generate low (1.2 V) voltages because both the cathode and anode reactions occur in alkaline electrolyte. The CCNY research group has designed Zn/Mn batteries with both reversibility and higher voltage. Previous attempts to raise the voltage of the system thermodynamically has involved separating electrolytes with ceramic or ion-selective membranes so that the anode reaction occurs in alkaline conditions and the cathode half-reaction in acid environs. However, the membranes push the battery’s costs too high to compete with existing alternatives. The CCNY team, led by professor Gautam Yadav, invented a novel way to separate the battery half-cells by engineering the alkaline electrolyte into a thick gel whose interfacial properties prevent it from mixing with the liquid acidic solution and undergoing neutralization…
Related Content
Shifting to EVs
While it may not be obvious to the average driver, the number of electric vehicles (EVs) on the roads is…

Andritz

mproving chemical production processes with IIoT and AI technologies

How new control and monitoring mechanisms add value to filtration processes for a wide range of chemical applications - A paper about Filter presses supported by Industrial Internet of Things (IIoT) and Artificial Intelligence (AI)-technologies.

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
Improving chemical production processes with IIoT and AI technologies
New filtration technology for highly corrosive media
PTA production: Lowering OPEX without compromising on quality
Sure that zero means zero in your zero-liquid discharge (ZLD) process?
How separation processes profit from Industrial Internet of Things (IIoT) solutions

View More

Live chat by BoldChat