  Despite recent significant developments of Si composites, use of silicon with
significance in the anodes for Li-ion batteries is still limited. In fact,
nominal energy density is to be saturated around ~750 Wh/L regardless of
cell-types under the current material strategies. Use of Si-rich anode can push
the limit; however, the prolonged irreversible Li consumption becomes more
prominent. We previously showed that repeating c-Li3.75(+{\delta})Si
formation/decomposition, typically recognized to degrade the anodes, can
improve the irreversibility and accumulatively minimize the gross consumption.
Utilizing the insights combined with prelithiation techniques, here we provide
prototypic cell designs that can nonlinearly deplete the consumption.
