Controllable Preparation And Study On The Electrochemical Properties Of Novel Functional Electrode Materials

With the development of economy,the issues of energy and environmental have become more and more serious.The rapid development of the energy industry based on environment protecting and energy efficiency,which have simulated researchers to explore renewable energy materials and new energy storage system.Traditional inorganic electrode materials cannot satisfy the concept of environmental protection due to their high price,and the non-renewable transition metal,and so on.It promoted the development of organic electrode materials.Compared with traditional inorganic electrode materials,novel organic electrode materials have the advantages,including simple synthesis method,renewable raw materials and flexible molecular structure design.It is essential for designing new organic electrode materials with high capacity and insoluble properties in electrolyte.In addition,researchers are devoted to developing a safer energy storage system.Compared with alkaline metal ion batteries,water zinc ion battery is higher safety,because of their nonflammable electrolyte.Thus,in this paper,the main contents are as follows:?-Conjugated polypyrene nanoflowers with high specific surface area(324.2 m²g^-1)and thermal stability were prepared by a simple hydrothermal method.When tested as anode for lithium ion batteries(LIBs)and potassium ion batteries(PIBs),it shows excellent structural stability and good electrochemical performance.In PIBs,after 1000 cycles,the reversible capacity is about 190 m Ah g^-1at 500 m A g^-1.In LIBs,at 1000 m A g^-1,the capacity can still reach 565 m Ah g^-1 after 800 cycles.2-Amino-4-thiazoleacetic acid with redox active group was polymerized and salted by direct synthesis method.The product shows nanosheets structure.When tested as the anode for sodium ion batteries(NIBs),the polymer shows excellent electrochemical stability.At 1000m A g^-1,the capacity can maintain 190 m Ah g^-1,even after 1000 cycles.KMn₈O₁₆ nanofiber microspheres were successfully prepared by hydrothermal reaction and the electrochemical performance in different electrolytes was studied as the cathode material for Aqueous ZIBs.The capacity is about 200 m Ah g^-1 after 100 cycles at 200 m A g^-1;K⁺can stabilize the framework of manganese;The addition of EG can inhibit the side reaction of hydrogen evolution and enhance the electrochemical performance at low temperature.