Synthesis And Electrochemical Performance Of Multi-metal/Carbon Nanotube Composites As Electrical Catalyst

As tremendous pressure from fossil energy depletion as well as greenhouse effect and environmental issues derived from petrochemical energy,the clean and efficient renewable energy is urgently needed.It is of great potential for the application of fuel cells with clean environmental protection,high energy conversion rate,discharge waste less,safe and reliable,good operating performance and flexibility.Therefore,composite materials with low cost,high performance and good stability were prepared to replace Pt electric catalyst.The main research as followed:1.Based on the carbon nanotube starting materials,we adopted a one-step in-situ approach for the efficient synthesis of Ni,Mn/NCNT composite materials.In a systematic way,we studied the effect of different transition metals and calcination temperature on the behavior of catalysts.Ni,Mn/NCNT exhibited comparable half-wave potential than commercial Pt/C and it has a superior endurance to the methanol and durability,therefore,it has a great application potential in renewable energy conversion systems.2.A simple method for fabricate CuS/NCNT composites was designed by combining in situ assembling and thermal treatment.The effect of hydrothermal temperature,calcined temperature and morphology are systematically explored.The introduction of nitrogen and sulphur seems brought the following advantages:(1)increase conductivity of complex through reduction at high temperature;(2)assist the combination of Cu nanoparticles nanocrystals on CNT that could accelerate charge and mass transformed capability and more catalytic active sites.3.We adopted a one-step hydrothermal approach for the efficient synthesis of Mn-Mo@NCNT composite material.The composite material was applied in catalytic performance.The influence from the temperature of water,ethanol,ethylene glycol,DMF(Dimethyl Formamide)and calcination on composite materials were respectively investigated,meanwhile,synergistic effect in the process of catalytic was observed in composite materials.