High-areal capacity Si architecture as an on-chip anode for lithium-ion batteries

Dynamic mechanical equilibrium of silicon anodes for lithium-ion batteries enabled by surface hydroxyl-rich bonding

“…26 And when silicon interacts with modifying molecules or binders, surface properties play a pivotal role. 27 However, the native oxide layer on silicon particles is thin and uneven. Efforts to modify the silicon surface and enhance interfacial strength offer a novel perspective on addressing silicon volume expansion issues.…”

Nano-Silicon Encased in a S, N Co-doped Carbon Shells Anode Delivers High Lithium-Ion Storage Performance

“…7,8 Nevertheless, Si particle undergoes a great intrinsic volume expansion (300%) during the alloying reaction process, which causes serious pulverization and structural collapse in the LIBs, thereby leading to an unsatisfactory reversible capacity, poor rate performance and diminished cycling stability. 9,10 To overcome the above problems, numerous strategies have been adopted, including the rational construction of Si-based composites, porous Si, and nanostructured Si. Especially, the incorporation of Si with some carbonaceous substances has become the optimal approach to improve electronic conductivity and buffer the significant volume expansion.…”

“…The accelerated evolution of new energy-storage equipment has placed higher demands on the energy density and working life for the forthcoming generation of lithium-ion batteries (LIBs). , The development history of LIBs has demonstrated that exploring advanced anode materials is the key to commercialization. Currently, the exploitation of new Si-based anode materials with high capacity and excellent cycling stability via a facile method has become a high-profile research trend in LIBs. − During the lithiation process, Si particles generate an alloying reaction with Li + at a low potential to form a Li 15 Si 4 alloy, thus delivering a splendid theoretical reversible capacity (3580 mAh/g). , Nevertheless, Si particle undergoes a great intrinsic volume expansion (300%) during the alloying reaction process, which causes serious pulverization and structural collapse in the LIBs, thereby leading to an unsatisfactory reversible capacity, poor rate performance and diminished cycling stability. , To overcome the above problems, numerous strategies have been adopted, including the rational construction of Si-based composites, porous Si, and nanostructured Si. Especially, the incorporation of Si with some carbonaceous substances has become the optimal approach to improve electronic conductivity and buffer the significant volume expansion. , Besides, the carbon coating layers on the Si anode can effectively avoid the direct access between Si particles and electrolyte, resluting in an improved electrode structural stability.…”