应用改进固相合成法制备亚微米Li4Ti5O12锂离子电池材料.X射线衍射(XRD)、扫描电镜(SEM)和激光粒度分析分别显示:物相单一且粒度均匀,D50为0.886μm,属于亚微米级材料.合适的粒度和分布使得该材料展示出优良的电化学性能,以其装配的半电池中,0.1C首次放电容量为165 mAh/g,5C时放电容量可达107 mAh/g,10C时仍可达到54 mAh/g.
杜晨树
,
杨化滨
,
周作祥
,
吴孟涛
,
黄来和
. 亚微米Li_4Ti_5O_(12)材料的电化学性能研究[J]. 电化学, 2008
, 14(3)
: 238
-242
.
DOI: 10.61558/2993-074X.1898
The sub-micronmeteric Li4Ti5O12 powder material was successfully prepared through an improved solid-state synthesis process.The results of X-ray diffraction(XRD),scanning electron microscopy(SEM) and laser particle size distribution analysis showed that only a single spinel phase and a normal distribution pattern with the average size(D50) of 0.886μm could be observed.Due to the suitable partical size distribution,the Li4Ti5O12 powders showed a promising electrochemical performance.At the discharge current densities of 0.1C(16.5 mAh/g) and 5C,the discharge capacities reached 165 mAh/g and 107 mAh/g,respectively.Even at 10C,it still reached 54 mAh/g.
[1]Prosini P P,Mancini R,Petrucci L,et al.Li4Ti5O12asanode in all-solid-state,plastic,lithium-ion batteries forlow-power applications[J].Solid State Ionics,2001,144:185-192.
[2]Yao X L,Xie S,Chen C H,et al.Comparisons ofgraphite and spinel Li1.33Ti1.67O4as anode materials forrechargeable lithium-ion batteries[J].ElectrochimicaActa,2005,50:4076-4081.
[3]Hao Y J,Lai Q Y,Liu D Q,et al.Synthesis by citricacid sol-gel method and electrochemical properties ofLi4Ti5O12anode material for lithium-ion battery[J].Materials Chemistry and Physics,2005,94:382-387.
[4]Hao Y J,Lai Q Y,Xu Z H,et al.Synthesis by TEAsol-gel method and electrochemical properties ofLi4Ti5O12anode material for lithium-ion battery[J].Solid State Ionics,2005,176:1201-1206.
[5]Zaghib K,Simoneau M,Armand M,et al.Electro-chemical study of Li4Ti5O12as negative electrode for Li-ion polymer rechargeable batteries[J].J PowerSources,1999,81-82:300-305.
[6]Guerfi A,Sevigny S,Lagace M,et al.Nano-particleLi4Ti5O12spinel as electrode for electrochemical genera-tors[J].J Power Sources,2003,119-121:88-94.
[7]Wen Z Y,Gu Z H,Huang S H,et al.Research onspary-drid lithium titanate as electrode materials for lith-ium ion batteries[J].J Power Sources,2005,146:670-673.
[8]Guerfi A,Charest P,Kinoshita K,et al.Nano elec-tronically conductive titanium-spinel as lithium ion stor-age negative electrode[J].J Power Sources,2004,126:163-168.
[9]Jiang C H,Ichihara M,Honma I,et al.Effect of parti-cle dispersion on high rate performance of nano-sizedLi4Ti5O12anode[J].Electrochimica Acta,2007,52:6470-6475.
[10]Yang J W(杨建文),Zhong H(钟晖),Zhong HY(钟海云),et al.Properties of Li4Ti5O12prepared with a-morphous TiO2[J].The Chinese Journal of Process En-gineering(in Chinese)2005,5(2):170-174.
[11]Bach S,Pereira-Ramos J P,Baffier N.Electrochemi-cal properties of sol-gel Li4Ti5O12[J].J PowerSources,1999,81~82:273-276.
[12]Nakahara K,Nakajima R,Matsushima T,et al.Prep-aration of particulate Li4Ti5O12having excellent charac-teristics as an electrode active material for power stor-age cells[J].J Power Sources,2003,117:131-136.
[13]Allen J L,Jow T R,wolfenstine J.Low temperatureperformance of nanophase Li4Ti5O12[J].J PowerSources,2006,159:1340-1345.
[14]Kostlanova T,Dedecek J,Krtil P.The effect of the in-ner particle structure on the electronic structure of thenano-crystalline Li-Ti-O spinels[J].ElectrochimicaActa,2007,52:1847-1856.
[15]Li J R,Tang Z L,Zhang Z T.Controllable formationand electrochemical properties of one-dimensionalnanostructured spinel Li4Ti5O12[J].ElectrochemistryCommunications,2005,7:894-899.
