화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Chemical Engineering Research, Vol.50, No.1, 50-54, February, 2012
Export Citation
수퍼커패시터 전극을 위한 폴리아닐린/TiO2 복합체의 제조 및 전기화학적 성질
Preparation and Electrochemical Properties of PANI/TiO2 Composites for Supercapacitor Electrodes
박수근, 김광만1, 이영기1, 정용주2, 김석†
  • 부산대학교 화공생명공학부, 609-735 부산시 금정구 부산대학로 63-2
  • 1한국전자통신연구원 융합부품소재연구부문 전력제어소자팀, 305-700 대전광역시 유성구 과학로 218
  • 2한국기술교육대학교 응용화학공학과, 330-708 충남 천안시 동남구 병천면 충절로 1600
Sukeun Park, Kwang Man Kim1, Young-Gi Lee1, Yongju Jung2, and Seok Kim†
  • Department of Chemical and Biochemical Engineering, Pusan National University, 63-2, PusanDaehak-ro, Geumjeong-gu, Busan 609-735, Korea
  • 1Research Team of Power Control Devices, Electronics and Telecommunications Research Institute, 218 Gwahak-ro, Yuseong, Daejon 305-700, Korea
  • 2Department of Applied Chemical Engineering, Korea University of Technology and Education, 1600, Chungjul-ro, Byeongcheon-myeon, Cheonan-si, Chungnam 330-708, Korea
E-mail:
초록
본 연구는 커패시터 전극 응용을 위한 복합체 전극에 관련된 것으로 PANI와 PANI/TiO2로 구성된 수퍼커패시터 전극을 제조하여 cyclic voltammetry(CV)를 이용하여 6 M KOH 수용액에서 축전량(capacitance) 특성을 조사하였다. PANI/TiO2 복합체는 간단한 in-situ 방법을 통해 다양한 비율로 합성되었다. PANI/TiO2 복합체의 형태학(morphology)적 특징을 파악하기 위해서 주사전자현미경(SEM)과 투과전자현미경(TEM)을 통해 분석하였고, X선 회절 분석기(XRD)를 이용하여 복합체의 결정화도와 담지된 TiO2의 입자크기를 확인하였다. 전기화학적 시험 결과, 아닐린 대비 TiO2의 주입량이 10 wt%일 때 가장 우수한 축전량(626 Fg^(-1))을 나타냈고 높은 주사속도인 100 mVs^(-1)에서 286 Fg^(-1)의 비축전량을 나타내었다. 이는 폴리아닐린(PANI) 매트릭스(matrix)에 균일하게 담지된 TiO2(~6.5 nm)가 효과적인 연결 구조를 형성하여 전하이동현상이 증가하고, 축전이 가능한 반응면적이 증가한 것과 관련있다고 판단된다.
In this study, PANI and PANI/TiO2 composites were prepared as electrode materials for a supercapacitor application. Cyclic voltammetry (CV) was performed to investigate the supercapacity properties of these electrodes in an electrolyte solution of 6 M KOH. The PANI/TiO2 composites were polymerized by amount of various ratios through a simple in-situ method. The morphological properties of composites were analyzed by SEM and TEM method. The crystallinity of the composite and TiO2 particle size were identified using X-ray diffraction (XRD). In the electrochemical test, The electrode containing 10 wt% TiO2 content against aniline units showed the highest specific capacitance (626Fg^(-1)) and delivered a capacitance of 286 Fg^(-1) reversibly at a 100 mVs^(-1) rate. According to the surface morphology, the increased capacitance was related to the fact that nano-sized TiO2 particles (~6.5 nm) were uniformly connected for easy charge transfer and an enhanced surface area for capacitance reaction of TiO2 itself.
Keywords:Composite Electrode;Polyaniline;Titanium Dioxide;Supercapacitor;Capacitance
  1. Morimoto T, Hiratsuka K, Sanada Y, Kurihara K, J. Power Sources., 60(2), 239 (1996)
  2. Arico AS, Bruce P, Scrosati B, Tarascon JM, Schalkwijk WV, Nat. Mater., 4, 366 (2005)
  3. Frackowiak E, Phys. Chem. Chem. Phys., 9, 1774 (2007)
  4. Wang S, Jiang SP, Wang X, Electrochimica Acta., 56, 3338 (2011)
  5. Zhu, Murali S, Stoller MD, Velamakanni A, Piner RD, Ruoff RS, Carbon., 48, 2118 (2010)
  6. Snook GA, Kao P, Best AS, J. Power Sources, 196(1), 1 (2011)
  7. Amarnath CA, Chang JH, Kim D, Mane RS, Han SH, Sohn D, Mater. Chem. Phys., 113(1), 14 (2009)
  8. Guan H, Fan LZ, Zhang HC, Qu XH, Electrochim. Acta, 56(2), 964 (2010)
  9. Liu JL, Zhou MQ, Fan LZ, Li P, Qu XH, Electrochim. Acta, 55(20), 5819 (2010)
  10. Li GC, Zhang CQ, Li YM, Peng HR, Chen KZ, Polymer, 51(9), 1934 (2010)
  11. Lokhande CD, Dubal DP, Oh, Shim J, Curr. Appl. Phys., 11, 255 (2011)
  12. Chepuri RK, Rao M, Vijayan M, Synthetic Metals., 158, 516 (2008)
  13. Yuan C, Su L, Gao B, Zhang X, Electrochimica Acta., 54, 7039 (2008)
  14. Panic VV, Dekanski AB, Stevanovic RM, J. Power Sources, 195(13), 3969 (2010)
  15. Hu ZA, Xie YL, Wang YX, Mo LP, Yang YY, Zhang ZY, Mater. Chem. Phys., 114(2-3), 990 (2009)
  16. Zhang Y, Feng H, Wu X, Wang L, Zhang A, Xia T, Dong H, Li X, Zhang L, Int. J. Hydrog. Energy., 34, 4889 (2009)
  17. Wang DH, Kou R, Choi DW, Yang Z, Nie Z, Li J, Saraf LV, Hu D, Zhang J, Graff GL, Liu J, Pope, Askay M, ACS Nano., 23, 1587 (2010)
  18. Wang DW, Li F, Zhao J, Ren W, Chen ZG, Tan J, Wu ZS, Gentle L, Lu GQ, Cheng HM, ACS Nano., 3, 1745 (2009)
  19. Cheng Q, Tang J, Ma J, Zhang H, Shinya N, Qin LC, Carbon., 49, 2917 (2011)
  20. Kim KS, Park SJ, Electrochimica Acta., 56, 6547 (2011)
  21. Ko JM, Ryu KS, Kim S, Kim KM, J. Appl. Electrochem., 39(8), 1331 (2009)
  22. Lai C, Zhang HZ, Li GR, Gao XP, J. Power Sources, 196(10), 4735 (2011)
  23. Da D, Kim MG, Lee JY, Cho JP, Energy Environ. Sci., 2, 818 (2009)
  24. Chen X, Mao SS, Chem. Rev., 107(7), 2891 (2007)
  25. Zhao Y, Zhan L, Tian J, Nie S, Ning Z, Electrochimica Acta., 56, 1967 (2011)
  26. Stoller MD, Park SJ, Zhu Y, Ahn JH, Ruoff RS, Nano Lett., 8, 3498 (2008)
  27. Yan J, Wei T, Qiao WM, Shao B, Zhao QK, Zhang LJ, Fan ZJ, Electrochim. Acta, 55(23), 6973 (2010)