New inorganic spinel oxides for use as negative electrode materials in future lithium-ion batteries

The electrochemical behaviour and associated structural changes of Li4Ti5O12 have been investigated down to 0.01 V vs. Li/Li+. In addition, member of the solid solutions Li1+xM1−3xTi1+2xO4, M=Fe, Ni and Cr (x=0.30) have been studied by a combination of electrochemical measurements and structural studies including neutron diffraction on as-prepared samples.