Kosenko Alexandra, Pushnitsa Konstantin, Kim Artem, Novikov Pavel, Popovich Anatoliy A
Institute of Machinery, Materials, and Transport, Peter the Great Saint Petersburg Polytechnic University, Politechnicheskaya ul. 29, 195251 Saint Petersburg, Russia.
Materials (Basel). 2022 Jan 26;15(3):931. doi: 10.3390/ma15030931.
The present paper illustrates a comparison of open-cell aluminum foams. The foams were fabricated by two different methods: spark plasma sintering and replication on a polyurethane template. The influence of pressure, temperature, and diameter of space holding material on foam obtained by the spark plasma sintering method was investigated. Additionally, the aluminum powder content in slurry and atmosphere during thermal processing of foam prepared by the replication technique were studied. The morphology and structure of obtained samples were analyzed by scanning electron microscopy and X-ray diffraction analysis. Supplementarily, mechanical properties and electrical conductivity were studied. The porosity of obtained samples was 83% for the SPS sample and 85% for the replication sample. The results of the studies carried out gave us an understanding that the SPS method is more promising for using the obtained foams as cathode current collectors in lithium-ion batteries due to excessive aluminum oxidation during sintering in the furnace.
本文阐述了开孔泡沫铝的比较。这些泡沫材料通过两种不同方法制备：放电等离子烧结法和在聚氨酯模板上的复制法。研究了压力、温度和造孔剂直径对通过放电等离子烧结法获得的泡沫材料的影响。此外，还研究了复制技术制备泡沫材料过程中浆料中的铝粉含量以及热处理过程中的气氛。通过扫描电子显微镜和X射线衍射分析对所得样品的形态和结构进行了分析。另外，还研究了力学性能和电导率。所得样品中，放电等离子烧结法样品的孔隙率为83%，复制法样品的孔隙率为85%。所开展研究的结果让我们认识到，由于在炉中烧结期间铝过度氧化，放电等离子烧结法对于将所得泡沫材料用作锂离子电池的阴极集流体更具前景。
