SusChem: Development and fundamental investigation of high capacity cathode materials for high energy and low cost Na-ion batteries

SusChem：高能低成本钠离子电池高容量正极材料的开发与基础研究

• 批准号: 1706723
• 负责人: Hailong Chen
• 金额: $ 33.93万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2017
• 资助国家: 美国
• 起止时间: 2017-09-15 至 2021-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1706723&HistoricalAwards=false
• 关键词: SusChem; Development; fundamental; investigation; capacity

This project addresses energy storage systems for the transportation and the intermittent supply of electricity generated by wind and solar power technologies. One potential solution for these applications is the use of sodium-ion batteries that utilizes widely available and domestic resources. Sodium ion batteries have similar functioning mechanisms as lithium ion batteries but cost less, as sodium is much more abundant than lithium. Currently, the performances of sodium ion batteries are mainly limited by the cathode electrode materials. Most of the existing cathode materials of sodium ion batteries suffer from low capacity and short cycle life. In addition, precious metals such as cobalt and nickel are typically used in these electrode materials, which increases the cost. This project aims to develop low cost and high performance novel cathode materials based on the oxides of one of the most abundant elements, manganese. The cathode materials are designed using strategies derived from fundamental science that allow the cathode to be charge-discharge cycled for hundreds of times with minimal performance degradation. For educational impacts, the project will advance knowledge in the fields of solid state chemistry and electrochemistry. The progress and new findings of the project will be included in undergraduate and graduate courses and disseminated to high school teachers and students through summer programs. The outcomes of the project will expedite the development and commercialization of sodium ion batteries, and therefore significantly improve the sustainability of energy storage technologies. The stability of the crystal structure in cathode electrode materials in continuous electrochemical charge-discharge cycles is key to obtain long cycle life in sodium ion batteries. This project focuses on rational design of novel sodium manganese oxide cathode materials with layered structures. Novel strategies are used to stabilize their structure by doping selected elements into the manganese sites. The doping is expected to effectively delay or mitigate the phase transitions during the sodium intercalation and deintercalation processes, therefore allowing high capacity and long cycle life. The designed materials will be synthesized and electrochemically tested. Multiple advanced characterization methods such as in situ X-ray diffraction will be used to investigate the changes of the crystal structure of the materials during electrochemical cycling. By interpreting the results from synthesis, electrochemical tests, and structure characterizations, insights on the structural stability of the layered cathode materials will be revealed, the hypotheses will be validated, and the materials design strategies will be verified and further refined to guide the development of next generation high performance cathode electrode materials for sodium ion batteries.

该项目致力于解决运输储能系统以及风能和太阳能技术产生的间歇性电力供应问题。这些应用的一种潜在解决方案是使用钠离子电池，该电池利用广泛可用的国内资源。钠离子电池具有与锂离子电池相似的功能机制，但成本更低，因为钠比锂丰富得多。目前，钠离子电池的性能主要受到正极材料的限制。现有的钠离子电池正极材料大多存在容量低、循环寿命短的问题。此外，这些电极材料通常使用钴、镍等贵金属，这增加了成本。该项目旨在开发基于最丰富的元素之一锰的氧化物的低成本和高性能新型阴极材料。阴极材料的设计采用源自基础科学的策略，使阴极能够充放电循环数百次，而性能下降最小。就教育影响而言，该项目将增进固态化学和电化学领域的知识。该项目的进展和新发现将纳入本科生和研究生课程，并通过暑期项目向高中教师和学生传播。该项目的成果将加速钠离子电池的开发和商业化，从而显着提高储能技术的可持续性。连续电化学充放电循环中正极材料晶体结构的稳定性是钠离子电池获得长循环寿命的关键。该项目重点是合理设计具有层状结构的新型钠锰氧化物正极材料。通过将选定的元素掺杂到锰位点中，采用新颖的策略来稳定其结构。掺杂有望有效延迟或减轻钠嵌入和脱嵌过程中的相变，从而实现高容量和长循环寿命。设计的材料将被合成并进行电化学测试。将采用原位X射线衍射等多种先进表征方法来研究电化学循环过程中材料晶体结构的变化。通过解释合成、电化学测试和结构表征的结果，将揭示对层状正极材料结构稳定性的见解，验证假设，并验证和进一步完善材料设计策略，以指导层状正极材料的开发。用于钠离子电池的下一代高性能正极材料。

项目成果

Facile and scalable electrodeposition of copper current collectors for high-performance Li-metal batteries

• DOI: 10.1016/j.nanoen.2019.02.048
• 发表时间: 2019-05
• 期刊: Nano Energy
• 影响因子: 17.6
• 作者: Xuetian Ma;Zhantao Liu;Hailong Chen

Li 15 P 4 S 16 Cl 3 , a Lithium Chlorothiophosphate as a Solid-State Ionic Conductor

Li 15 P 4 S 16 Cl 3 ，一种固态离子导体氯硫代磷酸锂

• DOI: 10.1021/acs.inorgchem.9b01751
• 发表时间: 2019
• 期刊: Inorganic Chemistry
• 影响因子: 4.6
• 作者: Liu, Zhantao;Zinkevich, Tatiana;Indris, Sylvio;He, Xingfeng;Liu, Jue;Xu, Wenqian;Bai, Jianming;Xiong, Shan;Mo, Yifei;Chen, Hailong
• 通讯作者: Chen, Hailong