Novel High Rate Lithium Intercalation Cathode Materials
来源期刊：JOURNAL OF RARE EARTHS2005年第6期
论文作者：Cheng Yushan Zhang Yong Liu Yuwen Hu Xinguo
Key words：composite; neodymium oxide; lithium rechargeable batteries; high rate discharge; cathode; rare earths;
Abstract: Application of amorphous V2O5/carbon/neodymium oxide (Nd2O3) composite is one of ways to surmount the lower electrical conductivity of V2O5. A new type of V2O5/carbon/Nd2O3 composite was prepared by mixing vanadium oxide hydrosol, acetone, carbon and Nd2O3 powder. High rate discharge/charge property of the composite electrode was tested electrochemically. This composite with Nd2O3 added shows the improvement of not only the discharge capacity but also cycle durability discharge capacity. The rate capability of the composite cathode also increases with the addition of Nd2O3.and cycle life are probably caused by the increase in porosity of open pores and short diffusion length of the active material on the lithium-ion insertion.
Cheng Yushan1，Zhang Yong2，Liu Yuwen1，Hu Xinguo2
(1.Jiangmen JJJ Battery Co., Ltd, Jiangmen 529000, China;
2.Department of Applied Chemistry, Harbin Institute of Technology, Harbin 150001, China)
Abstract:Application of amorphous V2O5/carbon/neodymium oxide (Nd2O3) composite is one of ways to surmount the lower electrical conductivity of V2O5. A new type of V2O5/carbon/Nd2O3 composite was prepared by mixing vanadium oxide hydrosol, acetone, carbon and Nd2O3 powder. High rate discharge/charge property of the composite electrode was tested electrochemically. This composite with Nd2O3 added shows the improvement of not only the discharge capacity but also cycle durability discharge capacity. The rate capability of the composite cathode also increases with the addition of Nd2O3.and cycle life are probably caused by the increase in porosity of open pores and short diffusion length of the active material on the lithium-ion insertion.
Key words:composite; neodymium oxide; lithium rechargeable batteries; high rate discharge; cathode; rare earths;
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