poorjohn
The table would have you believe that LiCobalt is a very poor performer compared to later Li technology. It would be interesting to know Boeing's supplier's reason for that choice.
Back in 2004/2005, it was the mainstream cathode chemistry. Many of these newer cathode chemistries either were developed or matured after the 787 program was in full development.
Momoe
Boeing are taking a beating partly because the planes aren't flying for a damn good reason, the other issue is Boeing's perceived lack of clear oversight across the design/implementation.
Designing aircraft batteries of any kind is not a core competency of Boeing Commercial Aviation. Yes, they are ultimately responsible for the decision to go Li-Ion instead of NiCad, but they chose Yuasa because of their expertise in aviation batteries and Li-Ion batteries for industrial uses.