Credit: POSTECH
High-capacity anode materials such as silicon are essential for creating high-energy density lithium-ion batteries; they can provide a minimum of 10 times the capability of graphite or other anode products now offered. The obstacle here is that the volume growth of high-capacity anode products during the response with lithium positions a threat to battery performance and stability. To alleviate this concern, scientists have been examining polymer binders that can effectively control the volumetric growth.
Research to date has actually focused solely on chemical crosslinking and hydrogen bonding. Chemical crosslinking includes covalent bonding between binder molecules, making them strong but has a deadly flaw: when broken, the bonds can not be restored. On the other hand, hydrogen bonding is a reversible secondary bonding in between particles based upon electronegativity distinctions, but its strength (10-65 kJ/mol) is relatively weak.
The surface area of high-capacity anode products is primarily adversely charged, and the layering-charged polymers are arrayed alternately with positive and negative charges to successfully bind with the anode. The team presented polyethylene glycol to regulate the physical homes and assist in Li-ion diffusion, resulting in the thick high-capacity electrode and maximum energy density found in Li-ion batteries.
Teacher Soojin Park explained, “The research study holds the prospective to significantly increase the energy density of lithium-ion batteries through the incorporation of high-capacity anode materials, consequently extending the driving range of electrical lorries. Silicon-based anode products might possibly increase driving variety at least significantly.”
Referral: “Layering Charged Polymers Enable Highly Integrated High-Capacity Battery Anodes” by Dong-Yeob Han, Im Kyung Han, Hye Bin Son, Youn Soo Kim, Jaegeon Ryu and Soojin Park, 3 February 2023, Advanced Functional Materials.DOI: 10.1002/ adfm.202213458.
This research study was conducted with assistance from the Ministry of Science and ICT, the Nano-Material Technology Development Program, and the National Research Laboratory for Future Technology of Korea.
Scientists from POSTECH and Sogang University developed a functional polymeric binder for steady, high-capacity anode materials, offering 10 times the capacity of conventional graphite anodes. This breakthrough might substantially increase lithium-ion battery energy density and potentially extend electrical car driving range by at least tenfold.
POSTECH-Sogang University joint research study team establishes layering-charged, polymer-based steady high-capacity anode material.
The electric lorry market has actually been experiencing explosive development, with global sales surpassing $1 trillion (approximately 1,283 trillion Korean Won/KRW) in 2022 and domestic sales going beyond 108,000 systems. Inevitably, need is growing for high-capacity batteries that can extend EV driving variety. Recently, a joint group of researchers from POSTECH and Sogang University established a practical polymeric binder for steady, high-capacity anode material that could increase the current EV variety at least 10-fold.
A research study team led by POSTECH professors Soojin Park (Department of Chemistry) and Youn Soo Kim (Department of Materials Science and Engineering) and Professor Jaegeon Ryu (Department of Chemical and Biomolecular Engineering) of Sogang University developed charged polymeric binder for a high-capacity anode material that is both reliable and stable, using a capacity that is 10 times or higher than that of conventional graphite anodes. This breakthrough was accomplished by replacing graphite with Si anode combined with layering-charged polymers while maintaining stability and dependability. The research outcomes were released as the Front Cover Article in Advanced Functional Materials.
Recently, a joint group of researchers from POSTECH and Sogang University developed a practical polymeric binder for stable, high-capacity anode material that could increase the present EV variety at least 10-fold.
A research study team led by POSTECH teachers Soojin Park (Department of Chemistry) and Youn Soo Kim (Department of Materials Science and Engineering) and Professor Jaegeon Ryu (Department of Chemical and Biomolecular Engineering) of Sogang University developed charged polymeric binder for a high-capacity anode product that is both reputable and stable, using a capability that is 10 times or greater than that of conventional graphite anodes. High-capacity anode materials such as silicon are vital for creating high-energy density lithium-ion batteries; they can use at least 10 times the capability of graphite or other anode materials now offered. The surface of high-capacity anode materials is mostly negatively charged, and the layering-charged polymers are arrayed at the same time with unfavorable and positive charges to efficiently bind with the anode.