种用作超级电容器电极材料的硒化钴纳米材料及其制备方法

• Format: Patent
• Language: Chinese
• Published: 11.09.2018
• 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

本发明公开种用作超级电容器电极材料的CoSe纳米材料及其制备方法，该纳米材料为纤维状纳米结构。该CoSe纳米材料采用了两步水热的合成方法，步骤包括先采用水热反应法制得先驱体Co(OH)(CO)纳米线，然后在该先驱体上再次通过水热反应法进行硒化处理，得到CoSe纳米材料。将该纳米材料置于三电极体系下测试，该纳米电极材料在2A/g的电流密度下表现出1249F/g的高比容量，100mA电流下经过3000次循环充放电后仍能保持80%以上的比容，其电荷转移阻抗为0.32Ω/cm。本发明制备的CoSe纳米电极材料具有比电容高、循环性能好、制备方法简单、成本低的优点。 The invention discloses a Co<0.85>Se nanometer material serving as an electrode material of a supercapacitor and a preparation method of the Co<0.85>Se nanometer material. The nanometer material adopts a fibrous nanometer structure. The Co<0.85>Se nanometer material adopts a two-step hydrothermal synthesis method, and the two-step hydrothermal synthesis method comprises the steps of firstly, preparing a precursor Co(OH)(CO )<0.5> nanowire by a hydrothermal reaction method; and secondly, carrying out selenization processing on the precursor by the hydrothermal reaction method to obtain the Co<0.85>Se nanometer material. When placed in a three-electrode system for test, the nanometer electrode material is endowed with high specific cap