Micro‐sized Si‐C Composite with Interconnected Nanoscale Building Blocks as High‐Performance Anodes for Practical Application in Lithium‐Ion Batteries

Yi, Ran; Dai, Fang; Gordin, Mikhail L.; Chen, Shuru; Wang, Donghai

doi:10.1002/aenm.201200857

Cited by 424 publications

(300 citation statements)

References 38 publications

Supporting

Mentioning

286

Contrasting

Unclassified

Order By: Relevance

“…[73] Tap density of various Si-based anode materials can be found in Figure 9. Compared with the low tap density of silicon nanoparticles (0.16 g cm −3 ), the tap density of SiC composite with granule hierarchical bottom-up assembly, [74] SiC composite from SiO disproportionation, [75] nano/microstructured Si/C, [46] and pomegranate Si microparticle [42] are 0.49, 0.78, 0.81, and 0.53 g cm −3 , respectively. Si-containing graphite composites also have shown great potential for practical application.…”

Section: −3mentioning

confidence: 94%

Challenges and Recent Progress in the Development of Si Anodes for Lithium‐Ion Battery

Jin

Zhu

et al. 2017

Advanced Energy Materials

745

580

View full text Add to dashboard Cite

Silicon, because of its high specific capacity, is intensively pursued as one of the most promising anode material for next‐generation lithium‐ion batteries. In the past decade, various nanostructures are successfully demonstrated to address major challenges for reversible Si anodes related to pulverization and solid‐electrolyte interphase. However, the electrochemical performance is still limited by challenges that stem from the use of nanomaterials. In this progress report, the focus is on the challenges and recent progress in the development of Si anodes for lithium‐ion battery, including initial Coulombic efficiency, areal capacity, and material cost, which call for more research effort and provide a bright prospect for the widespread applications of silicon anodes in the future lithium‐ion batteries.

show abstract

Section: −3mentioning

confidence: 94%

Challenges and Recent Progress in the Development of Si Anodes for Lithium‐Ion Battery

Jin

Zhu

et al. 2017

Advanced Energy Materials

745

580

View full text Add to dashboard Cite

show abstract

“…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: 97%

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

et al. 2014

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

“…Methods are needed to prepare bulk Si materials without structural degradation during lithiation/de-lithiation. Recently, porous structured Si and Sibased composites have attracted significant attention 14,[24][25][26][27][28][29][30][31][32] . The idea is to pre-form meso/macropores in the Si structure to accommodate the large volume expansion that accompanies the lithiation process.…”

mentioning

confidence: 99%

Mesoporous silicon sponge as an anti-pulverization structure for high-performance lithium-ion battery anodes

et al. 2014

Nat Commun

1,196

437

View full text Add to dashboard Cite

Nanostructured silicon is a promising anode material for high-performance lithium-ion batteries, yet scalable synthesis of such materials, and retaining good cycling stability in high loading electrode remain significant challenges. Here we combine in-situ transmission electron microscopy and continuum media mechanical calculations to demonstrate that large (420 mm) mesoporous silicon sponge prepared by the anodization method can limit the particle volume expansion at full lithiation to B30% and prevent pulverization in bulk silicon particles. The mesoporous silicon sponge can deliver a capacity of up to B750 mAh g À 1 based on the total electrode weight with 480% capacity retention over 1,000 cycles. The first cycle irreversible capacity loss of pre-lithiated electrode is o5%. Bulk electrodes with an area-specific-capacity of B1.5 mAh cm À 2 and B92% capacity retention over 300 cycles are also demonstrated. The insight obtained from this work also provides guidance for the design of other materials that may experience large volume variation during operations.

show abstract

Micro‐sized Si‐C Composite with Interconnected Nanoscale Building Blocks as High‐Performance Anodes for Practical Application in Lithium‐Ion Batteries

Cited by 424 publications

References 38 publications

Challenges and Recent Progress in the Development of Si Anodes for Lithium‐Ion Battery

Challenges and Recent Progress in the Development of Si Anodes for Lithium‐Ion Battery

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

Mesoporous silicon sponge as an anti-pulverization structure for high-performance lithium-ion battery anodes

Contact Info

Product

Resources

About