Professor Won-Jin Kwak from the Department of Energy and Chemical Engineering at the University of Natural Sciences and Technology in Ulsan, along with researchers from Hanyang University, has developed a method that significantly improves the efficiency and lifespan of batteries based on organic electrodes. These findings mark a significant milestone in the commercialization of eco-friendly batteries and pave the way for further advancements in the field.
Organic electrodes have long been recognized as cost-effective and readily available materials, making them a promising alternative to traditional materials used in lithium-ion batteries. However, the dissolution of these active materials in the electrolyte poses a significant challenge, limiting their practical application in batteries. To address this, the research team introduced diluted electrolytes as non-dissolving electrolytes that effectively mitigate the physical constraints associated with high concentration electrolytes (HCE) and prevent the dissolution of organic electrodes.
The study focused on perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA), a prominent material used as an organic electrode. When using diluted electrolyte, the PTCDA-based battery achieved impressive results in terms of capacity retention and performance. Over 1000 cycles of charge and discharge, the battery retained up to 91% of its capacity at a current of 1000 mA g−1. Through a combination of electrochemical and spectroscopic measurements, as well as dynamic molecular simulations, the team demonstrated effective inhibition of the dissolution of the active material and the mitigation of the detrimental ion transport effect, preventing capacity loss.
These studies present a promising strategy for achieving highly reversible organic electrode-based lithium-ion batteries, opening up new possibilities for the development of more efficient and sustainable energy storage solutions. By utilizing non-dissolving electrolytes, the team overcame the limitations associated with organic electrodes, paving the way for extending the lifespan of these eco-friendly batteries.
Professor Kwak emphasized the significance of this breakthrough, stating, “The development of non-dissolving electrolytes provides an effective method to inhibit the dissolution of organic electrode materials without compromising capacity or performance. This study represents a significant step towards practical applications of organic electrode-based batteries.”
The research team verified their findings through computational methods and experimental validation, confirming that the use of the developed electrolyte leads to effective inhibition of the dissolution of the active material. Over 1000 cycles of charge and discharge, more than 80% of the battery’s capacity was preserved, in contrast to conventional electrolytes that lost less than 50% of their capacity after only 20 cycles.
Secondary batteries based on organic electrodes with non-dissolving electrolytes hold great promise in addressing resource depletion and rising material costs. As scientists continue their work on these batteries, this study lays the foundation for future breakthroughs and advancements in the field.
The results of this research were published in Advanced Energy Materials on January 19, 2024. The study was supported by the National Research Foundation (NRF) and the Ministry of Science and Information and Communication Technology (MSIT) in Korea.
FAQ:
1. What method was developed by Professor Kwak and the researchers from Hanyang University?
Professor Won-Jin Kwak and researchers from Hanyang University have developed a method that significantly improves the efficiency and lifespan of batteries based on organic electrodes.
2. Why are organic electrodes a promising alternative for lithium-ion batteries?
Organic electrodes are considered cost-effective and readily available materials, making them a promising alternative to traditional materials used in lithium-ion batteries.
3. How did the research team address the issue of active material dissolution in the electrolyte?
The research team introduced diluted electrolytes as non-dissolving electrolytes, which mitigate the physical constraints associated with high concentration electrolytes (HCE) and prevent the dissolution of organic electrodes.
4. What material did the study focus on?
The study focused on perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA), a significant organic electrode used in batteries.
5. What results were achieved in terms of capacity retention and performance in the PTCDA-based battery?
Over 1000 cycles of charge and discharge, the PTCDA-based battery retained up to 91% of its capacity at a current of 1000 mA g−1.
6. What benefits does the use of non-dissolving electrolytes bring?
The use of non-dissolving electrolytes effectively inhibits the dissolution of the active material and mitigates the detrimental ion transport effect, preventing capacity loss.
7. What is the potential of secondary batteries based on organic electrodes with non-dissolving electrolytes?
Secondary batteries based on organic electrodes with non-dissolving electrolytes hold great promise in addressing resource depletion and rising material costs.
8. What are the potential applications of this technology?
This technology has the potential for use in energy storage and as an alternative to traditional lithium-ion batteries.
Terminology and Technical Language Explanations:
– Organic electrodes: Materials used as electrodes in batteries that are made from organic substances instead of traditional materials like lithium-ion.
– Non-dissolving electrolytes: Electrolytes that do not dissolve in the electrolyte, thus protecting organic electrodes from dissolving during battery operation.
– Diluted electrolytes: Electrolytes that are diluted to alleviate the constraints associated with high concentration electrolytes.
– Capacity retention: The ability of a battery to retain its capacity during multiple charge and discharge cycles.
– Performance: The effectiveness of a battery’s operation, measured, for example, by its ability to deliver energy at a specific current.
– Electrolyte: The liquid or gel electrolyte that allows the flow of ions between two electrodes in a battery.
– Conventional electrolytes: Standard electrolytes used in batteries.
– Charge and discharge cycles: The process in which a battery is charged and discharged multiple times to evaluate its performance and durability.
– Active material: The material used in an electrode that stores and releases energy during battery operation.
Suggested Related Links (Main domain links only, not subpages):
Ulsan National Institute of Science and Technology – Homepage of the Ulsan National Institute of Science and Technology, one of the institutions involved in the research.
Hanyang University – Homepage of Hanyang University, the second institution involved in the research.
Advanced Energy Materials – Homepage of the scientific journal where the research results were published.
National Research Foundation (NRF) – Homepage of the National Research Foundation (NRF), one of the sponsors of the research.
Ministry of Science and Information and Communication Technology (MSIT) in Korea – Homepage of MSIT, one of the sponsors of the research.
The source of the article is from the blog cheap-sound.com