화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.38, No.9, 1826-1833, September, 2021
DOI10.1007/s11814-021-0861-x  Export Citation
Effects of Pluronic P123 addition and Cr3+ doping on electrochemical properties of Li4Ti5O12 anode for lithium ion batteries
Jin-Seong Seo, and Byung-Ki Na†
  • Department of Chemical Engineering, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju, Chungbuk 28644, Korea
E-mail:
Spinel Li4Ti5O12 is an attractive anode material for lithium ion batteries due to its stable electrochemical characteristics. However, its low electrical conductivity is regarded as a critical disadvantage for commercialization. The addition of P123 with Cr3+ doping enhanced the surface area and the electrical conductivity, which improved the electrochemical properties of Li4Ti5O12. As-prepared samples were analyzed by X-ray diffraction, X-ray photoelectron spectroscopy, field-emission scanning electron microscopy, as well as BET and BJH analysis. Electrochemical properties were investigated by cyclic voltammetry, electrochemical impedance spectroscopy, powder conductivity measurement and cycle performance testing. P-Li4Ti4.95Cr0.05O12 showed excellent rate performance of 191, 189, 184, 175, 157, and 137 mAh/g at C-rates of 0.2, 0.5, 1, 2, 5, and 10 and high stable capacity retention of 147mAh/g at a C-rate of 10 after 300 cycles.
Keywords:Lithium-ion Battery;Li4Ti5O12;Doping;Electrical Conductivity;Porous Materials;P123
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