by In the world of electric vehicles (EVs), the rechargeable batteries that power these vehicles play a crucial role in their performance and longevity. While lithium-ion batteries have been the go-to choice for EVs, the focus is now shifting towards an intriguing alternative called dual-ion batteries (DIBs). These batteries, which utilize both lithium cations and counter anions, offer a high energy density and the ability to store a significant amount of energy. However, they have faced challenges related to durability, specifically due to the expansion and contraction of the graphite anode material during charge and discharge.
In a recent breakthrough, a collaborative research team consisting of scientists from Pohang University of Science and Technology (POSTECH), Seoul National University, Ulsan National Institute of Science and Technology (UNIST), and Sogang University, addressed the durability issues of dual-ion batteries through innovative polymer binder research. The team developed a novel polymer binder that incorporated azide groups and acrylate groups.
The azide groups formed a strong covalent bond with graphite, ensuring the structural integrity of the graphite anode during expansion and contraction. This chemical reaction was facilitated by ultraviolet light. On the other hand, the acrylate groups helped in reconnecting the graphite with the binder, even if the bond was disrupted.
The experimental results were promising, as the dual-ion batteries equipped with the newly developed binder demonstrated exceptional performance even after enduring over 3,500 recharge cycles. Additionally, these batteries showed rapid charging capabilities, with approximately 88% of the original capacity being restored within just 2 minutes.
Professor Soojin Park, a key member of the research team, highlighted the significance of dual-ion batteries, stating that they are not only cost-effective but also make use of Earth’s abundant graphite resources. This breakthrough is expected to drive further exploration and application of dual-ion batteries beyond electric vehicles.
The research was made possible with the support of the Mid-Career Researcher Program and the C1 Gas Refinery Program of the National Research Foundation of Korea (NRF) under the Ministry of Science and ICT, as well as the Basic Science Research Program (Doctoral Program Research Grant) of the NRF under the Ministry of Education of Korea.
This breakthrough in dual-ion battery technology is a significant step forward in enhancing the durability and charging efficiency of electric vehicles. With the ability to endure thousands of recharge cycles while maintaining exceptional performance, these batteries could greatly extend the lifespan of EVs. The rapid charging capabilities also address one of the major concerns associated with EVs, reducing charging time and improving convenience for users.
Furthermore, the utilization of Earth’s abundant graphite resources in dual-ion batteries makes them a cost-effective and environmentally-friendly option. As the world shifts towards a more sustainable future, the development and adoption of advanced battery technologies become increasingly crucial.
The findings from this research pave the way for further exploration and application of dual-ion batteries in various fields beyond electric vehicles. These batteries have the potential to revolutionize not only the automotive industry but also other sectors that require efficient and long-lasting energy storage solutions.
As the demand for EVs continues to rise, advancements in battery technology are of paramount importance. The breakthrough in dual-ion batteries represents a significant leap forward, offering a viable alternative to traditional lithium-ion batteries. With continued research and development, these batteries could soon become the standard for electric vehicles and various other applications that require reliable and high-performance energy storage systems.
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1. Source: Coherent Market Insights, Public sources, Desk research
2. We have leveraged AI tools to mine information and compile it
