Fabrication and Properties of a New Type Micro Super-capacitor

摘要：

　　A new type of micro super-capacitor with high working voltage,high over loading,small bulk,and low impedance was fabricated by a new process.The hydrous ruthenium oxide powder was prepared in a solution of RuCl3·xH2O and NaHCO3.Different composites loaded with certain amount of carbon black were synthesized with this technique.Super capacitor performance was assessed via cyclic voltammetry (CV),charge-discharge studies (DC),and impedance analysis (AC).The results show that the capacitance and resistivity of ruthenium oxide materials were dependent on the sample annealing temperature.The materials heated at 300℃ exhibit the highest rate capacitance of 1000F/g.4-6 cells of this capacitor was stacked up in series by conductive films in order to achieve higher working voltage.After packaged in resin,charge/discharge studies and impedance analysis were tested via the electrochemical test system.In the research,supercapacitors with a four-layer structure exhibited fine characteristics with high working voltage over 5.5V and low impedance under 1.5 ohm.Also,it had the ability of high-rate discharge performance and considerable large capacitance.

关键词： micro super-capacitor, hydrous ruthenium, laminar type, fabrication

作者: Yin Yajiang Wang Xiaofeng Lu Wushuang Li Xiangyu You Zheng

作者单位: State Key Laboratory of Precision Measurement Technology and InstrumentsDepartment of Precision Instruments and Mechanology,Tsinghua University, Beijing,100084, China

会议类型: 国际会议

会议名称: 中国微米纳米技术学会第14届学术年会、第3届国际年会暨第6届微米纳米技术“创新与产业化国际研讨与展览会(CSMNT2012 & ICMAN2012)

会议地点: 杭州

会议语种:英文

页码: 1-6

在线出版日期: 2012-11-04（万方平台首次上网日期，不代表论文的发表时间）