Controlled prelithiation of siloxene nanosheet anodes enables high performance 5 V-class lithium-ion batteries

Prelithiation: A Critical Strategy Towards Practical Application of High‐Energy‐Density Batteries

“…The chemical prelithiation method is to employ lithium-based organic solvents with a strong reducing ability. [81,[128][129][130][131][132][133][134][135][136][137][138][139][140][141][142] Common organic lithium solvents include n-butyl lithium, [140] lithium-naphthalene (Li-Naph), [129,[137][138][139] lithium-biphenyl (Li-Biph), [131,[133][134][135][136]142] Li-Biph derivatives, [128,132,141] and new organic compound of lithium have been developed. [130] In the early, Scott et al demonstrated that the initial irreversible capacity of carbon black electrode can be almost eliminated by the chemical pretreatment with the n-butyl lithium, which is ascribed to the formation of a stable SEI layer.…”

“…The chemical prelithiation method is to employ lithium‐based organic solvents with a strong reducing ability. [ 81,128–142 ] Common organic lithium solvents include n ‐butyl lithium, [ 140 ] lithium‐naphthalene (Li‐Naph), [ 129,137–139 ] lithium‐biphenyl (Li‐Biph), [ 131,133–136,142 ] Li‐Biph derivatives, [ 128,132,141 ] and new organic compound of lithium have been developed. [ 130 ] In the early, Scott et al.…”

A thermally etched N-doped porous layered silicon anode for improved cycling stability of lithium-ion batteries

“…S6 and S7, ESI †), the five-scan-cycle curves for P-Si NFs were better fitted, indicating good cycling stability. 49 To further characterize the charge transport kinetics of the P-Si NF anode, a power-law relationship between the peak current (i) and scan rate (v) was investigated to differentiate between the capacitive contribution (b = 1) and diffusionlimited responses (b = 0.5). 28 Eqn (1) indicates that the b value for the P-Si NF anode is 0.61 (Fig.…”

Unleashing the Potential of High-Capacity Anodes through an Interfacial Prelithiation Strategy

“…With the increased content of Si species in the composite, the Li + depletion of the corresponding electrode would become more pronounced, which translates to a substantial capacity fade and energy loss during practical use. ,− Therefore, affording the extra Li inventory, namely the prelithiation, has been proposed as a feasible strategy to counterbalance the cation depletion in the cell models. ,, As compared in Figure S1, despite a plethora of studies employing electrochemical pretreatments to mitigate the irreversible capacity loss, the complicated disassembly/reassembly procedures of temporary cell models hinder the industrial production. , Alternatively, Li-containing reagents, such as stabilized lithium metal powder (SLMP), − Li x Si @ Li 2 O, artificial-SEI-coated Li x Si, or Li x Sn@PPy, were incorporated during the anode slurry preparation. Unfortunately, their reducing property is incompatible with the polar N -methyl-2-pyrrolidone (NMP) or aqueous solutions, which poses extra technical barriers for electrode fabrication. , Mixing these chemical agents in the slurry-casting procedures, additionally, would induce the localized accumulation of metal deposits and further impede the Li + percolation across the electrode .…”

“…14,26−28 Therefore, affording the extra Li inventory, namely the prelithiation, has been proposed as a feasible strategy to counterbalance the cation depletion in the cell models. 18,29,30 Figure 1. Overview and stress evolution of the Si@C and prelithiated electrode with the Li 22 Si 5 @C/PVDF-HFP interfacial layer.…”