Si/C particles on graphene sheet as stable anode for lithium-ion batteries

Han, Jian; Tang, Xusheng; Ge, Shanhai; Shi, Ying; Zhang, Chengzhi; Li, Feng; Bai, Shuo

doi:10.1016/j.jmst.2020.11.054

Cited by 47 publications

(21 citation statements)

References 40 publications

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“…28,29 Han et al used dopamine and graphene as carbon sources to synthesize Si/C/G materials through pyrolysis and freeze-drying, which improved the stability and cycle performance of electrode materials. 30 Moreover, some metal oxides such as TiO 2 and ZnO, 31,32 as well as inert oxides SiO 2 and SiO x can also act as stress-relief buffering matrixes to adapt to the volume variation of Si. 33,34 Particularly, SiO x has gained much attention on account of its abundant reserves, low cost, and easy synthesis.…”

Section: ■ Introductionmentioning

confidence: 99%

“…In addition, Si is generally dispersed into carbon buffering matrix materials to tolerate the bulk variation of Si particles, since carbon materials possess excellent flexibility, electrical conductivity, high mechanical strength, and good chemical stability . Carbon materials mainly include amorphous carbon, graphite, carbon nanotubes, and graphene. , Han et al used dopamine and graphene as carbon sources to synthesize Si/C/G materials through pyrolysis and freeze-drying, which improved the stability and cycle performance of electrode materials . Moreover, some metal oxides such as TiO 2 and ZnO, , as well as inert oxides SiO 2 and SiO x can also act as stress-relief buffering matrixes to adapt to the volume variation of Si. , Particularly, SiO x has gained much attention on account of its abundant reserves, low cost, and easy synthesis.…”

Section: Introductionmentioning

confidence: 99%

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Rational Design and Performance of Ansode Materials Based on Si/SiO_x/C Particles Anchored on Graphene Sheets

Peng

et al. 2021

ACS Appl. Energy Mater.

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Silicon (Si) is known as an advanced anode material in the application of high-energy lithium-ion batteries (LIBs). However, Si-based anodes still face many challenges in practical applications, such as larger volume expansion, poor conductivity, and knotty solid electrolyte interphase films. Enormous efforts are committed to design and develop the Si/C composites with special structures and morphologies in order to overcome the above deficiencies of Si-based anode materials. Herein, the silicon/ silicon oxide/carbon/graphene (Si/SiO x /C/Gr) composite is deliberately designed and synthesized by the magnesiothermic reduction and freeze-drying strategies in which the resorcinol-formaldehyde resin (RF) is used as the carbon source. Moreover, amorphous SiO x and carbon are embedded around the Si nanodomains, which can overcome the bulk change of Si anodes during cycling processes. At the same time, graphene (Gr) can further boost the conductivity of the anode and maintain a stable electrode. Accordingly, the Si/SiO x /C/Gr anode exhibits good cycling performance in LIBs, e.g., a first discharge capacity of 1180 mAh g −1 with an initial Coulombic efficiency of 65.4% and a retention rate of 79.5% after 200 cycles at 0.3 A g −1 , indicating that the Si-based anodes through the rational designing structure and morphology will have good application prospects in high-energy density LIBs.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Rational Design and Performance of Ansode Materials Based on Si/SiO_x/C Particles Anchored on Graphene Sheets

Peng

et al. 2021

ACS Appl. Energy Mater.

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“…[21][22][23][24] Unfortunately, the serious volume expansion of silicon (>300%) in the process of lithiation accompanied by structural fracture and pulverization limits its practical application. [25][26][27][28][29] Although massive efforts have been put in solving this issue, silicon anodes have not yet been broadly commercialized because of the costly and complex preparation. Well ahead of time, silica was considered to be electrochemically inactive toward lithium because of the low ion diffusivity and the electronic insulation.…”

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confidence: 99%

Core–Shell Structured C@SiO₂ Hollow Spheres Decorated with Nickel Nanoparticles as Anode Materials for Lithium‐Ion Batteries

Liu

et al. 2021

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Especially, LIBs have been employed as the storage units to build power stations, by means of storing electrochemical energy converted from the intermittently green and sustainable energy (e.g., solar and wind energy). [8][9][10][11][12][13][14][15] Up to now, LIBs are dominating the energy systems because of their high energy densities, light weight, and good durability. However, the commercial anode material, graphite, exhibits a theoretical specific capacity of 372 mAh g −1 , hindering the large-scale applications of next-generation LIBs that combine high energy and high power. [16][17][18][19][20] Consequently, there is an urgent need for exploring and developing new anode materials with environmental benignity, high capacity, and low cost for the performance-enhanced LIBs.Silicon has attracted considerable attention as one of the potential anode candidates owing to the high theoretical capacity (4200 mAh g −1 ) and desired discharge voltage (<0.5 V vs Li/Li + ). [21][22][23][24] Unfortunately, the serious volume expansion of silicon (>300%) in the process of lithiation accompanied by structural fracture and pulverization limits its practical application. [25][26][27][28][29] Although massive efforts have been put in solving this issue, silicon anodes have not yet been broadly commercialized because of the costly and complex preparation. Well ahead of time, silica was considered to be electrochemically inactive toward lithium because of the low ion diffusivity and the electronic insulation. Noteworthily, recent reports have declared that silica can react with lithium to produce irreversible phases (Li 2 O and Li 4 SiO 4 ) and reversible phase (Si), exhibiting a high theoretical capacity of 1965 mAh g −1 . [30][31][32][33][34] The irreversible phases can serve as buffering matrices to alleviate volume expansion and shrinkage of Si during cycling. Moreover, silica has exceedingly bountiful supply together with cost-effective preparation and environmental friendliness. It has been supposed to be an attractive anode material for commercialization in LIBs. However, silica anodes still suffer from non-negligible volume change, initiating the surface cracks and even pulverization and ultimately resulting in the loss of electrical contact and rapid capacity fading.Nanostructure engineering and carbon incorporation are two mainstream strategies for improving the lithium storage performance of silica. Nanostructured silica can effectively reduce Silicon oxide is regarded as a promising anode material for lithium-ion batteries owing to high theoretical capacity, abundant reserve, and environmental friendliness. Large volumetric variations during the discharging/charging and intrinsically poor electrical conductivity, however, severely hinder its application. Herein, a core-shell structured composite is constructed by hollow carbon spheres and SiO 2 nanosheets decorated with nickel nanoparticles (Ni-SiO 2 /C HS). Hollow carbon spheres, as mesoporous cores, not only significantly facilitate the electron transfer but also ...

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“…The flexible materials usually are carbon materials with doped boron, nitrogen, which combine with Si‐based materials via doping and void. [ 29 ] Considering the cost of carbon materials in Si anodes, the pyrocarbon from pitch and polymers seems to be the very good options and many works have been done. [ 30 ] These designed materials could buffer silicon volume change, enhance electrical conductivity, and provide channels for ion transportation.…”

Section: Efficient Strategies Toward Si Anodesmentioning

confidence: 99%

Challenges and Recent Progress on Silicon‐Based Anode Materials for Next‐Generation Lithium‐Ion Batteries

et al. 2021

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The electrode materials are the most critical content for lithium‐ion batteries (LIBs) with high energy density for electric vehicles and portable electronics. Considering the high abundance, environmental friendliness, low cost, high capacity, and low operation potential of silicon‐based anode, it has been intensively studied as one of the most promising anode materials for high‐energy LIBs. However, the widespread application of silicon anode is impeded by the poor electrical conductivity, large volume variation, and unstable solid–electrolyte interfaces films. In the past decade, significant efforts have been demonstrated to tackle these major challenges toward industrial applications. Herein, the focus is on combining with advanced structure like nanostructure and composite with other materials, exploring various new polymer binders, improving electrolyte, different prelithiation strategies, and Si/graphite design to meet commercialization requirements, particularly summarized the progress on areal capacity, initial Coulombic efficiency, and cost. Finally, the guidelines and trends for practical silicon electrodes are presented based on the recent reports.

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Si/C particles on graphene sheet as stable anode for lithium-ion batteries

Cited by 47 publications

References 40 publications

Rational Design and Performance of Ansode Materials Based on Si/SiO_x/C Particles Anchored on Graphene Sheets

Rational Design and Performance of Ansode Materials Based on Si/SiO_x/C Particles Anchored on Graphene Sheets

Core–Shell Structured C@SiO₂ Hollow Spheres Decorated with Nickel Nanoparticles as Anode Materials for Lithium‐Ion Batteries

Challenges and Recent Progress on Silicon‐Based Anode Materials for Next‐Generation Lithium‐Ion Batteries

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Si/C particles on graphene sheet as stable anode for lithium-ion batteries

Cited by 47 publications

References 40 publications

Rational Design and Performance of Ansode Materials Based on Si/SiOx/C Particles Anchored on Graphene Sheets

Rational Design and Performance of Ansode Materials Based on Si/SiOx/C Particles Anchored on Graphene Sheets

Core–Shell Structured C@SiO2 Hollow Spheres Decorated with Nickel Nanoparticles as Anode Materials for Lithium‐Ion Batteries

Challenges and Recent Progress on Silicon‐Based Anode Materials for Next‐Generation Lithium‐Ion Batteries

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Rational Design and Performance of Ansode Materials Based on Si/SiO_x/C Particles Anchored on Graphene Sheets

Rational Design and Performance of Ansode Materials Based on Si/SiO_x/C Particles Anchored on Graphene Sheets

Core–Shell Structured C@SiO₂ Hollow Spheres Decorated with Nickel Nanoparticles as Anode Materials for Lithium‐Ion Batteries