Researchers at the U.S. Naval Research Laboratory’s (NRL) Chemistry Division have developed a safer alternative to fire-prone lithium-ion batteries, which were recently banned for some applications on Navy ships and other military platforms.
Joseph Parker, Jeffrey Long, and Debra Rolison from NRL’s Advanced Electrochemical Materials group are leading an effort to create an entire family of safer, water-based, zinc batteries. They have demonstrated a breakthrough for nickel-zinc (Ni-Zn) batteries in which a three-dimensional (3-D) Zn “sponge” replaces the powdered zinc anode traditionally used. With 3-D Zn, the battery provides an energy content and rechargeability that rival lithium-ion batteries while avoiding the safety issues that continue to plague lithium.
Their research appears in the April 28th, 2017 issue of Science, the premiere journal of the American Association for the Advancement of Science. Additional contributors to this research article include former NRL staff scientist, Christopher Chervin, National Research Council postdoctoral associate, Irina Pala, as well as industry partners Meinrad Machler and CEO of EnZinc, Inc., Michael Burz.
“Our team at the NRL pioneered the architectural approach to the redesign of electrodes for next-generation energy storage,” said Dr. Rolison, senior scientist and principal investigator on the project. “The 3-D sponge form factor allows us to reimagine zinc, a well-known battery material, for the 21st century.”
Zinc-based batteries are the go-to global battery for single-use applications, but are not considered rechargeable in practice due to their tendency to grow conductive whiskers (dendrites) inside the battery, which can grow long enough to cause short circuits.
“The key to realizing rechargeable zinc-based batteries lies in controlling the behavior of the zinc during cycling,” said Parker, lead author on the paper. “Electric currents are more uniformly distributed within the sponge, making it physically difficult to form dendrites.”
The NRL team demonstrated Ni-3-D Zn performance in three ways: extending lifetime in single-use cells; cycling cells more than 100 times at an energy content competitive with lithium-ion batteries; and cycling cells more than 50,000 times in short duty-cycles with intermittent power bursts, similar to how batteries are used in some hybrid vehicles.
With the benefits of rechargeability, the 3-D Zn sponge is ready to be deployed within the entire family of Zn-based alkaline batteries across the civilian and military sectors. “We can now offer an energy-relevant alternative, from drop-in replacements for lithium-ion to new opportunities in portable and wearable power, and manned and unmanned electric vehicles,” said Dr. Long, “while reducing safety hazards, easing transportation restrictions, and using earth-abundant materials.”
[osd_subscribe categories=’nickel-zinc-batteries’ placeholder=’Email Address’ button_text=’Subscribe Now for any new posts on the topic “NICKEL-ZINC BATTERIES’]
The Latest on: Nickel-zinc batteries
- Surge Battery Metals Inc. (OTCMKTS:NILIF) Short Interest Down 53.8% in April
Surge Battery Metals Inc. (OTCMKTS:NILIF – Get Rating) was the recipient of a significant decline in short interest in the month of April. As of April 30th, there was short interest totalling 5,400 ...
- Kildare consumers recycled 15 batteries per person last year
Kildare consumers recycled the equivalent of 15 AA batteries per person in 2021, equalling the national average.
- Computers Could Teach Us How to Build a Longer-Lasting Battery
Machine learning may be the secret to a better battery, as computers predict the best factors for an efficient design.
- JLNPhenix Energy expands lithium battery capacity to 550 MWh/year
With the addition of a 150 MWh-a-year plant in Maharashtra, JLNPhenix Energy has expanded its lithium battery manufacturing capacity in India to 550 MWh annually.
- Smelting giant Korea Zinc to invest $6.6 billion in green power
Many of Korea Zinc’s renewable projects are in mining-heavy Australia, where billionaire resources magnate Andrew Forrest is planning a factory for making hydrogen-producing electrolyzers.
via Google News and Bing News