Page 450 - Handbook of Battery Materials
P. 450

422  14 Lithium Alloy Anodes


                       400





                       300



                      EMF vs. Li (mV)  200








                       100





                         0
                          -0.2     -0.1    0.0      0.1      0.2     0.3
                                            X in Li 4.4+x Sn

                    Figure 14.9  Potential vs composition in the Li 4.4 Sn phase at ambient temperature [47].


                         6.0
                                                            Charge mode
                                                            Discharge mode
                        -6.2

                      Log {D c (cm 2 /s)}  -6.4


                        -6.6


                        -6.8

                        -7.0
                           -0.1                  0.0                   0.1
                                                     Sn
                                              X in Li 4.4+x
                    Figure 14.10  Composition dependence of the chemical
                    diffusion coefficient in the Li 4.4 Sn phase at ambient tempera-
                    ture [47].
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