A microgrid-patterned silicon electrode as an electroactive lithium host

Abstract

Lithium (Li) hosts, which can electrochemically accommodate Li in preformed pores of three-dimensional frameworks, have been investigated as an advanced electrode architecture for high-energy-density Li-metal batteries. However, most of the...

Taming Solvent–Solute Interaction Accelerates Interfacial Kinetics in Low‐Temperature Lithium‐Metal Batteries

“…Additionally, regulating the spatially electronic and ionic conducting network of cathode and anode materials is also an effective solution to improve the low‐temperature battery performance. [ 7 ] However, the key recognition of the low‐temperature operation of Li‐metal batteries remains unclear. Very recently, attention has been paid to the kinetic barrier of interfacial reactions to account for the inferiority of Li‐metal batteries at low temperature.…”

Si Nanowires: From Model System to Practical Li-Ion Anode Material and Beyond

“…Though binder-free Si NW (or a-Si) coating on high surface area CCs can be a path to higher ED, the mass and/or thickness of CCs used in many reports are usually missing, with little effort made to calculate ED (this is particularly the case where only half-cell testing is carried out). The ED plot in Figure 3 k focuses on the impact of the mass of planar Cu CC (assuming a 4 mAh cm –2 a-Si coating and a 3.8 mAh cm –2 NMC cathode 59 ) on ED. For the industrially used Cu CC thickness range of 5–15 μm, a high ED range of 400–545 Wh kg –1 can potentially be achieved (values on the curve shaded in orange).…”

PEO-Li21Si5 as a pre-lithiation and structural protection layer for lithium-ion batteries

“…Among them, the Li 21 Si 5 alloy used as a pre-lithiation additive has the advantages of low cost, extremely high lithium enrichment, and low chemical potential. [22][23][24][25][26][27][28][29][30][31] In our previously reported work, 32 the Li 21 Si 5 alloy is synthesized using a quick and spontaneous Li-Si alloying reaction by utilizing defects in the oxide layer of micron-sized Si. And it achieved ultra-high ICE of the solid-state battery without contact with the solution.…”