用AI加速设计环保有机电极,提升电池性能。
AI-Driven Discovery of High Performance Polymer Electrodes for Next-Generation Batteries
- 融合多源数据的机器学习模型预测有机电极性能。
- 可快速筛选候选材料,实现电压与容量的逆向设计。
- 适合关注可持续能源存储与材料智能设计的研究者。
电动汽车电池中过渡金属的使用依赖锂、钴、镍等关键元素,带来显著环境压力。用具氧化还原活性的有机材料替代金属,可使电池碳足迹降低一个数量级。然而,此类材料面临可用性低、导电性差、电压和比容量低及长期稳定性不足等挑战。为此,本文开发了一种基于机器学习的电池信息学框架,利用大规模电池数据集与先进机器学习技术,加速并优化红氧化学材料的发现与设计。提出一种数据融合的元学习模型,可预测多种有机负极与载流子(正极材料)组合下的电池性能、电压及比容量。该模型显著加快实验进程,支持材料逆向设计,并从三个大型材料库中识别出合适候选材料,推动可持续储能技术发展。
原文摘要 · Abstract (English)
The use of transition group metals in electric batteries requires extensive usage of critical elements like lithium, cobalt and nickel, which poses significant environmental challenges. Replacing these metals with redox-active organic materials offers a promising alternative, thereby reducing the carbon footprint of batteries by one order of magnitude. However, this approach faces critical obstacles, including the limited availability of suitable redox-active organic materials and issues such as lower electronic conductivity, voltage, specific capacity, and long-term stability. To overcome the limitations for lower voltage and specific capacity, a machine learning (ML) driven battery informatics framework is developed and implemented. This framework utilizes an extensive battery dataset and advanced ML techniques to accelerate and enhance the identification, optimization, and design of redox-active organic materials. In this contribution, a data-fusion ML coupled meta learning model capable of predicting the battery properties, voltage and specific capacity, for various organic negative electrodes and charge carriers (positive electrode materials) combinations is presented. The ML models accelerate experimentation, facilitate the inverse design of battery materials, and identify suitable candidates from three extensive material libraries to advance sustainable energy-storage technologies.
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