Lie复合氧化物负极材料制备与工业化应用研究.docxVIP

AbstractThe Abstract The rapid development of portable consumer electronics，electric vehicles and smart grid energy storage devices for solar cells and wind energy accelerates the demand ofhigh．performance lithium ion batteries，especially for high power density, high capacity density,low cost and long cycle life．Many studies have been performed to identify alternative materials for anode．A variety of transition metal oxides have been employed for this purpose．Materials based on iron oxide have been considered as potential substitute anode materials due to their high storage capacities，low cost， environmental friendliness and the abundance of the raw materials．The study ln this Master thesis includes mainly the synthesis of Li-Fe composite oxide anode materials using a so．．called self-catalytic reverse atom transfer radical polymerization approach． We have also optimized the composition and manufacture process of such an anode laminate to meet the requirements of practical applications．Finally,we apply a solid．1iquid reaction method to prepare copper sulfide(CuS)as another potential anode material． In Chapter 1．we introduce the history and status of lithium—ion batteries，the working principle and manufacturing procedure，anode materials especially transition metal oxides，the methodology and objectives of this thesis． In Chapter 2，we l ist the experimental chemicals and equipments used in the thesis．And we present the process of making a 3023 type coin cell in detail．The electrochemical and structural analyses methods are also described． In Chapter 3，we explore a new gel-polymer synthesis method named “self-catalytic reverse atom transfer radical polymerization’method to prepare Li—Fe composite oxide anode materials powders．This method iS based on the”Radiated Polymer Gel’’method and thermal acrylic acid polymerization process in our group and the reverse atom transfer radical polymerization(RATRP)．In comparison with ’’Radiated Polymer Gel”method and thermal acrylic ac