Porous Silicon Nanoparticle and Graphite Hybrid Structures for Li-Ion Battery Anodes

用于锂离子电池阳极的多孔硅纳米颗粒和石墨混合结构

• 批准号: 538876-2019
• 负责人: Dasog, Mita
• 金额: $ 1.82万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=681054
• 关键词: Porous; Silicon; Nanoparticle; Graphite; Hybrid

This engage grant will focus on the development of porous silicon nanoparticle/graphite (Si/C) hybrid materials in collaboration with Elcora Advanced Materials and Dasog research lab which will be explored as high capacity anodes for lithium-ion batteries (LIBs). LIBs are widely used for energy storage in portable electronics and Elcora produces high-quality graphite that is used as anodes in commercial LIBs. However, the low theoretical gravimetric capacity of the conventional graphite anodes makes them inapt for grid-scale storage. Combining graphite with silicon can increase the gravimetric capacity and improve the conductivity and ion-transport in the anode, as well as mitigate the problems with volume expansion in pure silicon anodes. The Si/C hybrid materials that will be developed in this project will provide high-capacity anodes that can position Elcora in the marketplace with a disruptive new LIB product that can be used for grid-scale storage. Dr. Dasog has expertise in silicon nanomaterials and her research group will prepare the Si/C hybrid materials with the graphite supplied by Elcora. The porosity and the hierarchal makeup of the hybrid materials will be varied by the Dasog lab to accommodate volume expansion in silicon during lithiation. These materials will be tested as anodes in LIBs by Elcora researchers. Growing concerns over increased carbon dioxide emissions and to mitigate climate change, society needs to increase the use of renewable sources of energy such as solar and wind. However, storage solutions also need to be developed simultaneously for large-scale integration of intermittent energy sources such as solar into electrical grids. The project will help Elcora Advanced Materials develop energy storage solutions has the potential to deliver a large proportion of Canada's electricity needs in a sustainable manner.

该基金将与Elcora Advanced Materials和Dasog研究实验室合作，重点开发多孔硅纳米颗粒/石墨（Si/C）混合材料，该材料将作为锂离子电池（LIB）的高容量阳极进行探索。LIB广泛用于便携式电子产品的能量存储，Elcora生产的高质量石墨用作商业LIB的阳极。然而，传统石墨阳极的低理论重量容量使得它们不适于网格规模的存储。将石墨与硅组合可以增加重量容量并改善阳极中的导电性和离子传输，以及减轻纯硅阳极中的体积膨胀问题。该项目将开发的Si/C混合材料将提供高容量阳极，使Elcora在市场上具有颠覆性的新型LIB产品，可用于电网规模的存储。Dasog博士拥有硅纳米材料方面的专业知识，她的研究小组将用Elcora提供的石墨制备Si/C混合材料。Dasog实验室将改变混合材料的孔隙率和层次结构，以适应锂化过程中硅的体积膨胀。这些材料将由Elcora的研究人员作为LIB的阳极进行测试。 随着人们对二氧化碳排放量增加的担忧日益加剧，为了缓解气候变化，社会需要增加对太阳能和风能等可再生能源的使用。然而，还需要同时开发存储解决方案，以便将太阳能等间歇性能源大规模集成到电网中。该项目将帮助Elcora Advanced Materials开发储能解决方案，有可能以可持续的方式满足加拿大大部分的电力需求。