
238 Electrochemically Enabled Sustainability
LiFeBO
3
are disadvantageous for practical purposes in terms of the energy
density. However, the theoretical capacities of LiMBO
3
are higher by approx-
imately 50 mAh g
−1
than those of the corresponding LiMPO
4
, which in turn
compensates for the lower voltage, allowing the theoretical energy densi-
ties of lithium metal borates (660−880 Wh kg
−1
) to be 10% higher than those
of olivine phosphates (595−802 Wh kg
−1
) [8,77,78], as shown in Table 6.3.
Additionally, LiMnBO
3
and LiCoBO
3
exhibit attractive operating voltages as
cathodes for the conventional Li cell.
6.3.4 Lithium Ion Diffusion
Fast Li ion dif