The Study Of Organic Additives’s Influence On Lithium-ion Battery Cycle Performance And Safety Performance

With the characteristics of high capacity, low pollution, light weight, no memory effec Lithium ion batteries which be widely used in mobile phone, notebook computer, digital camera and other fields favored by people, It has a wide application prospect. Galvanized steel with good corrosion resistance, low price, convenient operation, often used for corrosion protection of steel, it is widely applied in electroplating.The main research carried out in this dissertation are summarized as follows:1、Diallyl maleate+TMSB with a volume ratio of 1% was added to the electrolyte containing 1 mol·L-1 LiPF6 in ethylene carbonate (EC), dimethyl carbonate (DMC) (1:1 by volume).The first charging discharging and the performance of lithium ion battery were studied, The results indicated that Diallyl maleate can cooperates with TMSB to improve the performance of lithium ion battery.2、2-Methoxynaphthalene was studied as an overcharge additive in 1 mol/L LiPF6 /ethylene (EC)+methyl ethyl carbonate (EMC) (1:1 by volume) electrolyte for lithium ion batteries with LiFePO4 materials as cathode. The electrochemical performance of the batteries were studied by charge/discharge methode.The results indicated that 2-methoxynaphthalene does not have negative effect on the capacity of lithium-ion batteries, as welle as the most obvious for overcharge process of battery was observed when mass fraction of 2-methoxynaphthalene is 5%.3、This work is a sudy of the electrodeposition on to glassy-carbon electrode using solutions containing additive 3-(2-Furyl)acrolein. The additive’s influence on mechanism and nucleation Process of zinc electrodeposition onto glassy-carbon electrode was investigated by using cyclic voltammetry (CV), chronoamperometry(CA) and atomic force microscope (AFM). The results show that 3-(2-Furyl)acrolein can inhibition zinc nucleation and increasing the overpotential of zinc nucleation, it aslo can change the Kinetics process of zinc electrodeposition without changing zinc electrodeposition modes. In solution with additive of 3-(2-Furyl)acrolein, the nucleation mechanism of zinc translate 3D-instantaneous process into 3D-progressive process while the nucleation density (No) become larger and nucleation rate(A) of zinc turn smaller.