Engineering Empty Space between Si Nanoparticles for Lithium-Ion Battery Anodes

Wu, Hui; Zheng, Guangyuan; Liu, Nian; Carney, Thomas J.; Yang, Yuan; Cui, Yi

doi:10.1021/nl203967r

Cited by 683 publications

(524 citation statements)

References 49 publications

Supporting

Mentioning

496

Contrasting

Unclassified

Order By: Relevance

“…One of the remaining issues for Si anodes is the large capacity loss in the first cycle. The first-cycle Coulombic efficiency is typically very low, in the range of 50-80% 31,[35][36][37] , in spite of a few reports with higher values of B85% 38,39 .…”

mentioning

confidence: 98%

Dry-air-stable lithium silicide–lithium oxide core–shell nanoparticles as high-capacity prelithiation reagents

et al. 2014

Self Cite

View full text Add to dashboard Cite

Rapid progress has been made in realizing battery electrode materials with high capacity and long-term cyclability in the past decade. However, low first-cycle Coulombic efficiency as a result of the formation of a solid electrolyte interphase and Li trapping at the anodes, remains unresolved. Here we report Li x Si-Li 2 O core-shell nanoparticles as an excellent prelithiation reagent with high specific capacity to compensate the first-cycle capacity loss. These nanoparticles are produced via a one-step thermal alloying process. Li x Si-Li 2 O core-shell nanoparticles are processible in a slurry and exhibit high capacity under dry-air conditions with the protection of a Li 2 O passivation shell, indicating that these nanoparticles are potentially compatible with industrial battery fabrication processes. Both Si and graphite anodes are successfully prelithiated with these nanoparticles to achieve high first-cycle Coulombic efficiencies of 94% to 4100%. The Li x Si-Li 2 O core-shell nanoparticles enable the practical implementation of high-performance electrode materials in lithium-ion batteries.

show abstract

mentioning

confidence: 98%

Dry-air-stable lithium silicide–lithium oxide core–shell nanoparticles as high-capacity prelithiation reagents

et al. 2014

Self Cite

View full text Add to dashboard Cite

show abstract

“…To design a stable SEI at the interface between the electrolyte and electrode is crucial to achieve a stable and enhanced battery performance. Novel nanoarchitectured electrodes have recently been developed to tackle this issue, for example, hollow carbon nanotubeencapsulated Si NPs with empty space 16 and double-walled silicon nanotube 17 , exhibiting substantial improvement of cycling performance. However, the high surface area of nanostructured materials intrinsically leads to the formation of a large amount of SEI upon the decomposition of liquid electrolyte, and trapped lithium in the SEI layers results in a substantial first cycle irreversible capacity loss 18 .…”

mentioning

confidence: 99%

High-rate lithiation-induced reactivation of mesoporous hollow spheres for long-lived lithium-ion batteries

et al. 2014

View full text Add to dashboard Cite

Mechanical and chemical degradations of high-capacity anodes, resulting from lithiationinduced stress accumulation, volume expansion and pulverization, and unstable solidelectrolyte interface formation, represent major mechanisms of capacity fading, limiting the lifetime of electrodes for lithium-ion batteries. Here we report that the mechanical degradation on cycling can be deliberately controlled to finely tune mesoporous structure of the metal oxide sphere and optimize stable solid-electrolyte interface by high-rate lithiationinduced reactivation. The reactivated Co 3 O 4 hollow sphere exhibits a reversible capacity above its theoretical value (924 mAh g À 1 at 1.12 C), enhanced rate performance and a cycling stability without capacity fading after 7,000 cycles at a high rate of 5.62 C. In contrast to the conventional approach of mitigating mechanical degradation and capacity fading of anodes using nanostructured materials, high-rate lithiation-induced reactivation offers a new perspective in designing high-performance electrodes for long-lived lithium-ion batteries.

show abstract

“…Besides the improvment of binders in LIBs, various Si nanomaterials and modified nanostructured Si materials such as Si nanowires,57, 73, 74 Si particles, Si hollow spheres, Si porous nanostructures, and Si@C yolk–shell structures,60, 75, 76, 77 have also been constructed as LIBs anode materials, which prove their excellent rate performance and cycling stability. For example, Mulder and co‐workers have synthesized the binder/carbon‐free Si nanopartical anode, which exhibits high specific areal capacity as well as cycling stability 20.…”

Section: High‐capacity Anode Nanomaterials For Li‐ion Batteriesmentioning

confidence: 99%

Recent Advances in Designing High‐Capacity Anode Nanomaterials for Li‐Ion Batteries and Their Atomic‐Scale Storage Mechanism Studies

et al. 2018

View full text Add to dashboard Cite

Lithium‐ion batteries (LIBs) have been widely applied in portable electronics (laptops, mobile phones, etc.) as one of the most popular energy storage devices. Currently, much effort has been devoted to exploring alternative high‐capacity anode materials and thus potentially constructing high‐performance LIBs with higher energy/power density. Here, high‐capacity anode nanomaterials based on the diverse types of mechanisms, intercalation/deintercalation mechanism, alloying/dealloying reactions, conversion reaction, and Li metal reaction, are reviewed. Moreover, recent studies in atomic‐scale storage mechanism by utilizing advanced microscopic techniques, such as in situ high‐resolution transmission electron microscopy and other techniques (e.g., spherical aberration‐corrected scanning transmission electron microscopy, cryoelectron microscopy, and 3D imaging techniques), are highlighted. With the in‐depth understanding on the atomic‐scale ion storage/release mechanisms, more guidance is given to researchers for further design and optimization of anode nanomaterials. Finally, some possible challenges and promising future directions for enhancing LIBs' capacity are provided along with the authors personal viewpoints in this research field.

show abstract

Engineering Empty Space between Si Nanoparticles for Lithium-Ion Battery Anodes

Cited by 683 publications

References 49 publications

Dry-air-stable lithium silicide–lithium oxide core–shell nanoparticles as high-capacity prelithiation reagents

Dry-air-stable lithium silicide–lithium oxide core–shell nanoparticles as high-capacity prelithiation reagents

High-rate lithiation-induced reactivation of mesoporous hollow spheres for long-lived lithium-ion batteries

Recent Advances in Designing High‐Capacity Anode Nanomaterials for Li‐Ion Batteries and Their Atomic‐Scale Storage Mechanism Studies

Contact Info

Product

Resources

About