超级电容器用NiCo-LDH电极材料研究进展

Research progress in NiCo-LDH electrode materials for supercapacitors

镍钴层状双金属氢氧化物(NiCo-LDH)具有理论比电容大、成本低等优势,作为超级电容器电极材料得到广泛研究,但导电性能和电化学性能较差,限制了实际应用。简要介绍NiCo-LDH电极材料的储能原理、电化学性能影响因素(如比表面积、孔径和导电性等)和制备方法,其中包括水热法(溶剂热法)、微波法、电化学沉积法、化学共沉淀法和牺牲模板法等。重点介绍NiCo-LDH电极材料的改性研究(如改变形貌、制备复合材料等),并对研究方向进行展望。

Nickel-cobalt layered double hydroxide(NiCo-LDH)had been widely studied due to its advantages of large theoretical capacitance and low cost.However,the poor conductivity and electrochemical performance limited the practical application.The energy storage principle,influencing factors of electrochemical performance(such as specific surface area,pore size and conductivity,etc.)and preparation methods of NiCo-LDH electrode materials were briefly introduced,including hydrothermal method(solvothermal method),microwave method,electrochemical deposition method,chemical co-precipitation method and sacrificial template method,etc.The modification methods(such as morphology changing and preparing composite materials,etc.)were mainly introduced and the research directions were prospected.