CAREER: Fast-Charging Energy Storage Devices Enabled by Modulating Internal Electric Field of Heterostructure

职业：通过调制异质结构内部电场实现快速充电储能装置

• 批准号: 2144708
• 负责人: Yue Zhou
• 金额: $ 50万
• 依托单位: South Dakota State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-04-01 至 2022-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2144708&HistoricalAwards=false
• 关键词: CAREER; Fast; Charging; Energy; Storage

This award is funded in whole or in part under the American Rescue Plan Act of 2021 (Public Law 117-2).Fast-charging capability, as one of the key features of energy storage devices, has drawn extensive interest. It holds great promise to expand or accelerate their applications in many areas, especially for fast-charging electric vehicles to replace internal combustion engine vehicles, as well as stabilizing energy storage from renewable energy sources that are inherently intermittent such as wind and wave energy. However, common energy storage devices, such as batteries, have exhibited severe degradation under fast charging conditions. This Career project is to develop a practical method to develop fast-charging energy storage devices by introducing an internal electric field in the electrode to improve the electrode kinetics and the device performance. The project will host Bootcamp to train rural middle and high school teachers in developing science curricula, equipping them to deliver enriching classroom activities and lectures. Moreover, the project will involve underrepresented students performing science and engineering related projects, especially Native Americans, women, and first-generation college students.The research objective of this Career project aims to develop a novel heterostructure in the electrode to improve the fast-charging capability of energy storage devices by more than 10 times compared with state-of-the-art research studies. Based on the preliminary studies, the central hypothesis is that an internal electric field, generated on the heterointerfaces can accelerate ion transport, enhance electrode kinetics by lowering the energy of activation, and hence improve the performance under fast-charging conditions. It is expected to address this challenge and fundamentally advance the correlation between the electric field of the heterostructure, and the resulting fast-charging performance at the energy storage device level. The major contributions to those multidisciplinary fields lie in several aspects. First, a fundamental understanding will be generated on the effect of the local electric field of the heterostructure on the diffusion coefficient and electrode kinetics. A simulation model will also be created to be integrated with experimental efforts. Second, a knowledge gap will be filled from the material properties of the electrode to the fast-charging functionality of the devices. Third, distinct from conventional nanostructure engineering approaches in state-of-the-art research studies, which have a complex and high-cost fabrication process, introducing a heterostructure in the electrode provides an effective, safe, facile, and transformative approach that remarkably enhances the charge transfer and holds great promise to resolve one of the biggest issues, “long charging time,” of existing energy storage devices. The fundamental study will also open a new door to resolving issues in other energy devices by modulating the electronic structures in the devices.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

作为储能设备的eaTuyy ofe ofe of thist充电能力引起了广泛的兴趣，它具有扩展或加速其在许多领域的应用，尤其是在快速充电的电动汽车上以替换内燃机的范围稳定的能量本质上固有地间歇性，例如风能，例如电池。该设备的性能将在开发科学课程的活动和讲座上培训Rurale和高中教师。与基于预预学研究的最先进的研究相比，电源储能设备的快速充电能力超过10倍以上，中心假设是中心假设是，在异质方面产生的内部电场可以加速加速，通过激活的能量来增强电极动力学，并在快速充电下改善了性能这些多学科领域的贡献是在几个方面的理解。电极到第三次的快速充电功能。现有储能设备的费用。基本研究还将通过设备中的电子结构在其他能源设备中发出的新大门。使用基金会的知识分子优点和更广泛的影响评估标准进行评估。