Multi-level structural LDH@CoS composite electrode and preparation method

• Main Authors: DOU YIBEI, YANG FAN, LI JIANRONG, ZHOU JIAN, XIE YABO
• Format: Patent
• Language: Chinese; English
• Published: 26.10.2016
• Subjects: BASIC ELECTRIC ELEMENTS; CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES ORLIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The invention relates to a multi-level structural LDH@CoS composite electrode and a preparation method, belonging to the technical field of research and development of electrochemical energy storage materials. The preparation method comprises the following steps of: uniformly growing a LDH film on a nickel/platinum sheet substrate through simple hydrothermal reaction, then, growing Co-MOF having good crystal form in situ on the LDH surface, and finally, sulfidizing the constructed LDH@Co-MOF composite material so as to obtain the multi-level structural LDH@CoS electrode. A super capacitor constructed based on the electrode has high energy density and power density and excellent cycle stability; and simultaneously, the method has an important reference significance for constructing the multi-level structural electrochemical energy storage materials. 种多级结构LDH@CoS复合电极及制备方法，属于电化学储能材料研发的技术领域。通过简单的水热反应在镍/铂片基底上均匀生长LDH薄膜，进而在LDH表面原位生长良好晶形的Co-MOF，最终将构筑的LDH@Co-MOF复合材料硫化处理获得多级结构的LDH@CoS电极。基于该电极构筑的超级电容器具有高的能量密度和功率密度、及优异的循