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镍-钴双金属硫化物(NiCo_2S_4)具有典型的AB_2O_4尖晶石结构,NiCo_2S_4的电导率比NiCo_2O_4电导率高两个数量级,在室温下的电导率高达1.25×10~6S·m~(-1)。此外,NiCo_2S_4可提供比相应的单组分硫化物更有效的氧化还原反应,由于其独特的纳米结构和电化学性能,具有很大的应用潜力。本文系统地综述了不同结构纳米NiCo_2S_4的制备及其在电化学能量转换和储存中的应用,介绍了NiCo_2S_4纳米材料的形貌特征、物化特性以及合成方法。预处理条件、制备方法和生长基体都会对NiCo_2S_4纳米结构的形貌和性能产生影响,不同纳米结构(如纳米针、纳米线、纳米棒、纳米管、纳米盒、纳米片、纳米板和层次结构)的NiCo_2S_4可通过多种方法制得(如水热法和溶剂热法、低温合成法、阴离子交换法、蒸气转换法、电沉积方法、共沉淀法和自组装等),其中最常用的是水热和溶剂热法,因为它们成本低、易于处理且适合大规模制造。同时,总结了NiCo_2S_4纳米材料在电催化、超级电容器和锂离子电池领域中的应用现状;分析和比较其不同纳米结构的制备工艺、方法和应用,希望能促进NiCo_2S_4纳米材料在电化学能量转换和储存领域的发展;最后提出NiCo_2S_4纳米材料的发展及应用方向。
NiCo_2 S_4 has a typical AB_2O_4 spinel structure. The conductivity of NiCo_2 S_4 is two orders of magnitude higher than that of NiCo_2O_4, and the conductivity is as high as 1.25 × 10 ~ 6S · m ~ (-1) at room temperature ). In addition, NiCo_2S_4 can provide a more effective redox reaction than the corresponding one-component sulfides, which has great potential due to its unique nanostructure and electrochemical properties. This paper systematically reviews the preparation of nanostructured NiCo_2 S_4 nanocomposites and their applications in electrochemical energy conversion and storage. The morphologies, physico-chemical properties and synthesis methods of NiCo_2 S_4 nanomaterials are introduced. Pretreatment conditions, preparation methods and growth substrates all affect the morphology and properties of NiCo_2 S_4 nanostructures. Different nanostructures (such as nanowires, nanowires, nanorods, nanotubes, nanocrystals, nanosheets, nanosheets and hierarchical structures ) Of NiCo2S_4 can be prepared by a variety of methods (such as hydrothermal and solvothermal methods, low temperature synthesis, anion exchange, vapor conversion, electrodeposition, co-precipitation and self-assembly, etc.), of which the most commonly used is water Thermal and solvothermal processes because of their low cost, ease of handling and suitability for large scale manufacturing. At the same time, the application status of NiCo_2S_4 nanomaterials in the fields of electrocatalysis, supercapacitor and lithium ion battery was summarized. The preparation, methods and applications of different nanostructures were analyzed and compared. It is hoped that NiCo_2 S_4 nanomaterials can be used in electrochemical energy conversion and Storage area; Finally, the development and application of NiCo_2S_4 nanomaterials are proposed.