电解液对氢氧化镍电极的影响

The Effects of Electrolyte on the Properties of Nickel Hydroxide Electrode

利用恒电流充放电和循环伏安技术 ,研究了电解液中添加LiOH、Li2 CO3、Na3PO4、K2 CO3等物质对氢氧化镍电极电化学性能的影响 ,并分析了氢氧化镍在反应过程中的存在状态。与常用的添加剂相比 ,适量的Li2 CO3和Na3PO4能够提高电极的电化学容量以及电极反应的可逆性。

The effects of LiOH,Li 2CO 3,Na 3PO 4 and K 2CO 3,which worked as the electrolyte additives,on the electrochemical properties of the nickel hydroxide electrode were studied by using constant current and cyclic voltammetry techniques.The exis ting state of nickel hydroxide during reaction was analyzed.It was found that as compared with LiOH,a certain content of Li 2CO 3 and Na 3PO 4 could improve the electrochemical capacity of the electrode and the reversibility of the reaction.