Fabrication of multi-shell coated silicon nanoparticles via in-situ electroless deposition as high performance anodes for lithium ion batteries

Ren, Wenfeng; Li, Jun‐Tao; Zhang, Shaojian; Lin, Ai-Ling; Chen, You‐Hu; Gao, Zhen-Guang; Zhou, Yao; Deng, Li; Huang, Ling; Sun, Shi‐Gang

doi:10.1016/j.jechem.2020.01.001

Cited by 41 publications

(17 citation statements)

References 38 publications

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“…To solve the aforementioned drawbacks, researchers have proposed a series of strategies. One effective way is to fabricate nanoscale Si-based materials, including nanoparticles, nanotubes, nanofibers, and nanowires, , which could significantly reduce the mechanical stress caused by the huge volume expansion of Si. Ahmadabadi et al applied flexible Si/carbon nanofibers through electrospinning, which showed an improved cycling stability and rate capability compared to large-size Si .…”

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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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%

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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“…44 The Si 2p spectrum (Figure S10b) shows that the weak peak of Si−O of the cycled μSi−CMC-co-SN electrodes demonstrate the formation of dense and robust SEI films, compared with that of μSi−CMC. 45 The main peak of SiO at 102.9 eV can be split as two peaks at 103.6 and 102.6 eV, corresponding to the two asymmetric peaks of 2p 3/2 and 2p 1/2 for Si−O, respectively. 46 The F 1s spectrum (Figure S10c) displays more LiF for the cycled μSi−CMC-co-SN electrodes than for the cycled μSi−CMC, indicating the formation of stable SEI films.…”

Section: Resultsmentioning

confidence: 99%

“…The C 1s spectrum (Figure S10a) shows that the peak of polycarbonate at 288.5 eV is inexistent for the cycled μSi–CMC- co -SN, demonstrating that the strong hydrogen-bonding forces of CMC- co -SN with the surface of μSi-active materials decrease the formation of polycarbonate within SEI films . The Si 2p spectrum (Figure S10b) shows that the weak peak of Si–O of the cycled μSi–CMC- co -SN electrodes demonstrate the formation of dense and robust SEI films, compared with that of μSi–CMC . The main peak of SiO at 102.9 eV can be split as two peaks at 103.6 and 102.6 eV, corresponding to the two asymmetric peaks of 2p 3/2 and 2p 1/2 for Si–O, respectively .…”

Section: Results and Discussionmentioning

confidence: 99%

Improving the Electrochemical Property of Silicon Anodes through Hydrogen-Bonding Cross-Linked Thiourea-Based Polymeric Binders

Ren

et al. 2020

ACS Appl. Mater. Interfaces

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Binders play a crucial role in the development of silicon (Si) anodes for lithium-ion batteries with high specific energy. The large volume change of Si (∼300%) during repeated discharge and charge processes causes the destruction and separation of electrode materials from the copper (Cu) current collector and ultimately results in poor cycling performance. In the present study, we design and prepare hydrogen-bonding cross-linked thiourea-based polymeric binders (denoted CMC-co-SN) in consideration of their excellent binding interaction with the Cu current collector and low cost as well. The CMC-co-SN binders are formed through in situ thermopolymerization of chain-type carboxymethylcellulose sodium (CMC) with thiourea (SN) in the drying process of Si electrode disks. A tight and physical interlocked layer between the CMC-co-SN binder and Cu current collector is derived from a dendritic nonstoichiometric copper sulfide (Cu x S) layer on the interface and enhances the binding of electrode materials with the Cu current collector. When applying the CMC-co-SN binders to micro- (∼3 μm) (μSi) and nano- (∼50 nm) (nSi) Si particles, the Si anodes exhibit high initial Coulomb efficiency (91.5% for μSi and 83.2% for nSi) and excellent cyclability (1121 mA h g–1 for μSi after 140 cycles and 1083 mA h g–1 for nSi after 300 cycles). The results demonstrate that the CMC-co-SN binders together with a physical interlocked layer have significantly improved the electrochemical performance of Si anodes through strong binding forces with the current collector to maintain electrode integrity and avoid electric contact loss.

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“…Engineering the carbon-encapsulating germanium-based materials has extensively studied as one of the most promising strategy to improve the electrode conductivity and simultaneously suppress the volume expansion effect [7,8]. For instance, Yu et al have proposed a precursor pyrolysis strategy to synthesize carboncoated Ge nanowires with organic-inorganic hybrid GeO x / ethylenediamine nanowires as precursor, which have exhibited excellent Li-ion storage properties (approximately 1200 mAh g À1 at 0.2 C) [9].…”

Section: Introductionmentioning

confidence: 99%

In-situ construction of conducting alloy interphase towards modulating Li-ion storage kinetics

Wang

et al. 2021

Journal of Energy Chemistry

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Fabrication of multi-shell coated silicon nanoparticles via in-situ electroless deposition as high performance anodes for lithium ion batteries

Cited by 41 publications

References 38 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

Improving the Electrochemical Property of Silicon Anodes through Hydrogen-Bonding Cross-Linked Thiourea-Based Polymeric Binders

In-situ construction of conducting alloy interphase towards modulating Li-ion storage kinetics

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Fabrication of multi-shell coated silicon nanoparticles via in-situ electroless deposition as high performance anodes for lithium ion batteries

Cited by 41 publications

References 38 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

Improving the Electrochemical Property of Silicon Anodes through Hydrogen-Bonding Cross-Linked Thiourea-Based Polymeric Binders

In-situ construction of conducting alloy interphase towards modulating Li-ion storage kinetics

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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