Negative pole piece for lithium ion battery and sodium ion battery as well as preparation method and application of negative pole piece

• Main Authors: MA MEI, YU BINHAO, ZHU MINGZHU
• Format: Patent
• Language: Chinese; English
• Published: 26.12.2023
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention provides a negative pole piece for a lithium ion battery and a sodium ion battery as well as a preparation method and application of the negative pole piece, and relates to the technical field of battery materials. The preparation method comprises the following steps: mixing graphene oxide and Sn (HPO4) 2 nanosheets to prepare Sn (HPO4) 2/GO composite precursor powder, and finally carrying out heat treatment on the Sn (HPO4) 2/GO composite precursor powder to obtain the SnP2O7/rGO composite material. The SnP2O7/rGO composite material is used as an active material to prepare the negative pole piece, and the negative pole piece is used for preparing the lithium ion battery and the sodium ion battery, so that the lithium storage rate performance and the sodium storage rate performance of the lithium ion battery and the sodium ion battery are remarkably improved. 本发明提供了一种锂离子电池和钠离子电池用负极极片及其制备方法和应用，涉及电池材料技术领域。本发明是将氧化石墨烯和Sn(HPO4)2纳米片混合后制成Sn(HPO4)2/GO复合前驱体粉末，最后对其进行热处理从而得到SnP2O7/rGO复合材料。本发明利用SnP2O7/rGO复合