A lot of Toyota hybrids (but I believe not PHEVs) use NiMH batteries, which are longer lasting than the Li-ion batteries used in EVs and can withstand more charge cycles.
They’re used on hybrids because they’re more longer-lasting than Li-ion for the duty cycle hybrids have.
Li-ion is not universally better, but its energy density makes it better for EVs, and economies of scale mean that they’re becoming as cheap or cheaper than NiMH cells even if the hybrid duty cycle will make them degrade faster.
When used in the same duty cycle, most lithium cells/packs should last longer than the same capacity NIMH cells/packs.