摘要
以氨水作为催化剂,间苯二酚和甲醛为前驱体制备单分散酚醛(resorcinolformaldehyde,RF)树脂微球和碳微球.采用循环伏安法、电化学交流阻抗和恒电流充放电等方法对由RF树脂得到的碳微球的电化学性能的测试表明,其可以作为超级电容器电极材料.在扫描速率为1mV·s-1时,比电容为175.9F·g-1,电阻为0.5Ω,循环500圈后仍保持94.4%的电容量,具有优异循环寿命.结果表明,由酚醛树脂制备的单分散碳微球作为超级电容器的电极材料具有降低离子运输阻力和提高超级电容器稳定性的功能.
Monodisperse resorcinol-formaldehyde （RF）resin and carbon microspheres are obtained using ammonia solution （NH3 · H2 O）as catalyst,resorcinol and formaldehyde as precursor.The carbon microspheres obtained from RF resin are evaluated as the supercapacitor electrode material with several analytical tools, such as cyclic voltammetry （CV ）, electrochemical impedance spectroscopy （EIS）and galvanostatic charge-discharge measurement.It presents the low resistance value （R）of 0.5 Ω.The maximum specific capacitance of the electrode measured from cyclic voltammetry is up to 175.9 F·g-1 at a scan rate of 1 mV·s-1 .The specific capacitance only decays 5.6% after 500 cycles,which indicates that the sample possesses excellent cycle durability.Highly monodispersity carbon microspheres from RF resin can serve as supercapacitor electrode materials with the functions of reducing mass transport resistance and improving supercapacitor performance reliability.
出处
《大连理工大学学报》
EI
CAS
CSCD
北大核心
2014年第4期403-407,共5页
Journal of Dalian University of Technology
关键词
酚醛树脂微球
碳微球
聚合物
电极材料
超级电容器
RF resin microspheres
carbon microspheres
polymers
electrode material
supercapacitor
