Preparation method for applying hollow heterostructure Co9S8/ZnS (at) C to lithium-sulfur battery diaphragm

The invention relates to a preparation method for applying a hollow heterostructure Co9S8/ZnS (at) C to a lithium-sulfur battery diaphragm, which comprises the following steps: synthesizing an MOF material ZIF-67 from a cobalt source and 2-methylimidazole according to a certain proportion, and vulca...

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Bibliographische Detailangaben
Hauptverfasser:	CAI HAOYU, HUANG MEIHUI, YANG QINGRU, FENG JINSHUAI, RUAN YANLI, XU HANG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BASIC ELECTRIC ELEMENTS ELECTRICITY PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY
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Beschreibung
Zusammenfassung:	The invention relates to a preparation method for applying a hollow heterostructure Co9S8/ZnS (at) C to a lithium-sulfur battery diaphragm, which comprises the following steps: synthesizing an MOF material ZIF-67 from a cobalt source and 2-methylimidazole according to a certain proportion, and vulcanizing and carbonizing the ZIF-67 serving as a precursor to obtain an MOF derivative Co9S8 with a hollow structure. In order to obtain a heterostructure, PVP is used as a surfactant, a zinc source and 2-methylimidazole are added, and centrifugation, washing and drying are performed after stirring is performed for 12 hours. And then carrying out high-temperature carbonization to finally obtain the Co9S8/ZnS-C composite material with the hollow heterostructure. Co9S8/ZnS (at) C can be mixed with Super P and PVDF according to a certain proportion to form slurry, and the slurry is coated on a commercial Celgard2500 diaphragm and is used for modifying a lithium-sulfur battery diaphragm. The prepared hollow heterostructu