%0 Journal Article
%T Structure and Electrochemical Properties of Nd-doped LiMn2O4 Spinel<br>稀土掺杂锂锰氧化物LiMn2-xNdxO4(X=0.005～0.1)的结构和电性能研究
%A YANG Shu-Ting
%A JIA Jun-Hua
%A CHEN Hong-Jun
%A <br>杨书廷
%A 贾俊华
%A 陈红军
%J 无机材料学报
%D 2003
%I Science Press
%X LiMn_2-xNdxO_4 spinels doped with a wide range (x=0.005-0.1) of rare earth element (Nd) were synthesized. The result of the specific capacity dependence on x value shows that the sample with x=0.01 has the highest capacity among the samples. The structural change during cycles of LiMn2-xNdxO4(x=0.01) spinel was studied by X-ray powder diffraction which shows that the samples maintain spinel structure and after 100 cycles the symmetry of the unit cell increases. The charge-discharge curves of the obtained spinel show that after 100 cycles the capacity loss is only 14.9% which shows that the structure of LiMn2-xNdxO4(x=0.01) is stable. The FTIR spectra of LiMn1.99Nd0.01O4 samples indicate that there is no intense reaction between positive material and the electrolyte, but the trace of the H+/Li+ exchange may be the cause of the little capacity loss.
%K doping
%K lithium-ion batteries
%K spinel<br>掺杂
%K 锂离子电池
%K 尖晶石
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=ABC0063016AF57E1C73EF43C8D2212BD&aid=4365A18F612CE645&yid=D43C4A19B2EE3C0A&vid=13553B2D12F347E8&iid=0B39A22176CE99FB&sid=DFEE4E8C33C95CEF&eid=31BCE06A2FD82A16&journal_id=1000-324X&journal_name=无机材料学报&referenced_num=15&reference_num=18