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The researchers have developed a prototype battery cell, comparable in size to the batteries found in mobile phones, showcasing the capabilities of their technology by storing significantly more energy than conventional graphite-based batteries.

This innovative technology substitutes graphite with compounds derived from easily accessible food acids.

Iryna Inshyna/iStock

Researchers from the University of NSW have made a remarkable breakthrough in the realm of battery technology by tapping into an unlikely source: food acids, including those present in wine.

They have successfully created a battery component utilizing compounds derived from these food acids, which are prevalent and frequently discarded as waste.

According to the researchers in a recent press release, “A novel battery component that employs food-based acids found in sherbet and the winemaking process has the potential to enhance the efficiency, affordability, and sustainability of lithium-ion batteries.”

At present, lithium-ion batteries lead the energy market, powering a range of devices from smartphones to electric vehicles. Yet, they also face numerous challenges.

A key component of these batteries is the anode, which has traditionally been made from graphite. Unfortunately, the process of producing graphite poses significant environmental challenges due to the mining activities, the energy-intensive purification process, and the utilization of harsh chemicals.

Professor Neeraj Sharma, who spearheaded the research team, emphasizes that the standard method of sourcing graphite for batteries is highly unsustainable.

“Approximately 60% of the graphite is wasted during processing, which typically involves high temperatures and powerful acids to achieve the necessary purity… leading to a considerable environmental impact,” he noted.

The innovative technology introduces an alternative by using compounds derived from food acids such as tartaric and malic acid instead of graphite.

“Our aim is to thoroughly comprehend the materials utilized in batteries and their behavior during operation. This knowledge empowers us to create superior materials,” stated Professor Sharma.

“By incorporating large-scale waste products for battery components, the industry can broaden its sources while tackling environmental and sustainability issues.”

The research team has demonstrated the promise of their innovation by constructing a prototype battery cell.

This prototype resembles the size of those found in mobile devices and stores more energy compared to conventional graphite-based batteries. This advancement could enable devices to store more power and require less frequent charging.

“We conducted experiments to gain insights into the underlying processes, crafting reactions aimed at enhancing performance and analyzing the resulting compounds along with their efficiency,” Sharma explained.

The team is currently focused on scaling up their production approach, transitioning from small coin-sized batteries to larger pouch cells designed for more demanding applications. They are also performing tests to ensure the longevity of the batteries through repeated use and under various temperature conditions.

“By delving into the chemistry of batteries, we can improve their physical attributes and boost their energy storage capacity [to accommodate more power], ionic conductivity [which allows for quicker energy discharge and recharge], or structural stability [to extend their lifespan and enhance sustainability],” noted Sharma.

This significant advancement has the potential to enhance not only the sustainability of batteries but also their affordability and efficiency.

The researchers are investigating how this technology can be applied to sodium-ion batteries, which serve as an emerging alternative to lithium-ion batteries.

Professor Sharma emphasized the significance of having a variety of battery technologies for various uses and the necessity for more sustainable methods and materials.

“It’s about utilizing different battery technologies for different applications, including integrating solar and battery power into a single device,” he stated.

This advancement marks a significant progress in battery technology, demonstrating how food waste can be transformed into a valuable resource for global energy needs.

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Aman Tripathi is a dynamic and multifaceted journalist and news editor. He has reported on both regular and breaking news for various prominent publications and media outlets, such as The Hindu, Economic Times, Tomorrow Makers, among others. Aman specializes in politics, travel, and tech news, with particular emphasis on AI, advanced algorithms, and blockchain technology, driven by a keen interest in the broader fields of science and tech.

2 days ago