The electrochemical properties of spinel compound LiNi0.5Mn1.2Ti0.3O4 were investigated in this study. The chemicals LiAc·2H2O, ity of the sample reached 134 mAh/g at a current rate of 0.1C. The first and fifth cycle voltammogram almost overlapped, which showed that the prepared sample LiNi0.5Mn1.2Ti0.3O4 had excellent good cycle performance. There were two oxidation peaks at 4.21 V and 4.86 V, and two reduction peaks at 4.55 V and 3.88 V in the cycle voltammogram, respectively. By electrochemical impedance spectroscopy and its fit-ted result, the lithium ion diffusion coefficient was measured to be approximately 7.76×10-11 cm2/s.
参考文献
| [1] | Xiao LF;Zhao YQ;Yang YY;Ai XP;Yang HX;Cao YL .Electrochemical properties of nano-crystalline LiNi0.5Mn1.5O4[J].Journal of solid state electrochemistry,2008(6):687-691. |
| [2] | Amine K.;Yasuda H.;Fujita Y.;Tukamoto H. .A NEW THREE-VOLT SPINEL LI1+XMN1.5NI0.5O4 FOR SECONDARY LITHIUM BATTERIES[J].Journal of the Electrochemical Society,1996(5):1607-1613. |
| [3] | Oh S.H;Chung K.Y;Jeon S.H;Kim C.S Cho W and Cho B.W .Structural and electrochemical investigations on the LiNi0.5-xMn1.5-yMx+yO4(M = Cr,Al,Zr)compound for 5 V cathode material[J].Journal of Alloys and Compounds,2009,469:244. |
| [4] | Oh S.Y;Jeon S.H;Cho W.I;Kim C.S and Cho B.W .Synthesis and characterization of the metal-doped high-voltage spinel LiNi0.5Mn1.5O4 by mechanochemical process[J].Journal of Alloys and Compounds,2008,452:389. |
| [5] | Du G.D;Li Y.N;Yang J;Wang J.L .Fluorine-doped LiNi0.5Mn1.5O4 for 5 V cathode materials of lithium-ion battery[J].Materials Research Bulletin,2008,43:3607. |
| [6] | Fu L.J;Liu H;Li C,Wu Y.P;Rahm E Holze R and Wu H.Q .Electrode materials for lithium secondary batteries prepared by sol-gel methods[J].Progress in Materials Science,2005,50:881. |
| [7] | Wu Y.P;Rahm E;Holze R .Effects of heteroatoms on electrochemical performance of electrode materials for lithium ion batteries[J].Electrochimica Acta,2002,47:3491. |
| [8] | Kim J.H;Myung S.T;Yoon C.S;Oh I.H and Sun Y.K .Effect of Ti substitution for Mn on the structure of LiNi0.5Mn1.5-xTixO4 and their electrochemical properties as lithium insertion material[J].Journal of the Electrochemical Society,2004,151:A1911. |
| [9] | Fang H.S;Wang Z.X;Li X.H;Guo H.J and Peng W.J .Exploration of high capacity LiNi0.5Mn1.5O4 synthesized by solid-state reaction[J].Journal of Power Sources,2006,153:174. |
| [10] | Wei Y.J;Kim K.B;Chen G .Evolution of the local structure and electrochemical properties of spinel LiNixMn2-xO4(0 《x《 0.5)[J].Electrochimica Acta,2006,51:3365. |
| [11] | Liu G.Q;Xie H.W;Tian Y .Synthesis and electrochemical performances of spinel LiCr0.1Ni0.4Mn1.5O4 compound[J].Materials Research Bulletin,2007,42:1955. |
| [12] | Cao Q;Zhang HP;Wang GJ;Xia Q;Wu YP;Wu HQ .A novel carbon-coated LiCoO2 as cathode material for lithium ion battery[J].Electrochemistry communications,2007(5):1228-1232. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%