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Al取代α-Ni（OH）₂的有机溶剂法合成及其电化学性能

Synthesis of Al-substituted alpha-nickel hydroxide in organic solvent and its electrochemical performance

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【Author】 XIAO Huiming1,2, WANG Jianming1, CHEN Hui1, PAN Tao1, ZHANG Jianqing1(1. Department of Chemistry, Zhejiang University, Hangzhou 310027, China; 2. Department of Biology and Chemical Engineering,Zhejiang University of Science and Technology, Hangzhou 310012, China)

【机构】浙江大学化学系；浙江大学化学系浙江杭州310027；浙江科技学院生物与化学工程系；浙江杭州310012；浙江杭州310027；浙江杭州310027；

【摘要】采用化学共沉淀法,在醇水溶剂体系中合成了Al取代的α Ni(OH)2。应用AAS、ICP AES技术测定了样品中元素Ni和Al的含量,并运用XRD、FTIR和TG DSC等现代分析手段,对其结构进行了表征。所得产品的密度为1.68g·cm-3,放电中点电位为370mV,电化学比容量达303mA·h·g-1。经372个大电流充放电循环,样品的电化学容量循环衰减率仅为9.6%。更多还原

【Abstract】 Alsubstituted alphanickel hydroxide was synthesized through chemical coprecipitation method in organic solvent. Using AAS and ICPAES technique, Ni and Al contents were measured. The structure was investigated by means of XRD, FTIR and TGDSC. The experimental results show that the product prepared by this method has better electrochemical performance, with discharge mediate potential 370mV, and electrochemical specific capacity 303mAh·g-1. Tapping density was 1.68g·cm-3. The sample exhibits the cyclelife behavior with deterioration rate 9.6% during 372 galvanostatic chargedischarge cycles.更多还原