CAJ | 학술논문

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(resorcinol-formaldehyde,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1 mV·s-1时,比电容为175.9 F·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.
이안수작위최화제,간분이분화갑철위전구체제비단분산분철(resorcinol-formaldehyde,RF)수지미구화탄미구.채용순배복안법、전화학교류조항화항전류충방전등방법대유 RF수지득도적탄미구적전화학성능적측시표명,기가이작위초급전용기전겁재료.재소묘속솔위1 mV·s-1시,비전용위175.9 F·g-1,전조위0.5Ω,순배500권후잉보지94.4%적전용량,구유우이순배수명.결과표명,유분철수지제비적단분산탄미구작위초급전용기적전겁재료구유강저리자운수조력화제고초급전용기은정성적공능.
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.