Carbon-coated SiO2 nanoparticles as anode material for lithium ion batteries

Yu, Yao; Zhang, Jingjing; Xue, Leigang; Huang, Tao; Yu, Aishui

doi:10.1016/j.jpowsour.2011.08.009

Cited by 273 publications

(203 citation statements)

References 22 publications

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“…Currently, the best known host material SiO 2 would support high storage capacity as well as alleviate volume change during lithium insertion and extraction, and they attributed this to the effects of Li 2 O or Li 4 SiO 4 [7]. It is known that inert Li 2 O is formed by a reaction of lithium ions with metal oxide.…”

Section: Introductionmentioning

confidence: 99%

Novel Nanostructured SiO2/ZrO2 Based Electrodes with Enhanced Electrochemical Performance for Lithium-ion Batteries

Choi

Choy²

2016

Electrochimica Acta

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In this article, a novel anode material with high electrochemical performance, made of elements abundant on the Earth, is reported for use in lithium ion batteries. A chemically synthesised material (SiO 2 /ZrO 2 ) containing Si-O-Zr bonds, exhibits as much as 2.1 times better electrochemical performance at the 10 th cycle than a physically mixed material (SiO 2 +ZrO 2 ) of the same elements. When compared to synthesized SiO 2 or conventional graphite-based electrodes, the SiO 2 /ZrO 2 anode shows superiorcapability and cycling performance. This superior performance is ascribed to the effect of ternary compounds, which contributes not only to increasing the packing density, but also to creating the Si-O-Zr bond that makes additional reactions between SiO 2 /ZrO 2 and lithium ions possible. The Si-OZr bond also contributes to improved conductivity for SSZ and provides facile paths for charge transfer at the electrode/electrolyte interface. Therefore, the overall internal resistance in a battery would be decreased and better performance could thus be obtained, with this type of anode. In every result, the positive influence of the Si-O-Zr bonds in the anode of a lithium ion battery was confirmed.

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Section: Introductionmentioning

confidence: 99%

Novel Nanostructured SiO2/ZrO2 Based Electrodes with Enhanced Electrochemical Performance for Lithium-ion Batteries

Choi

Choy²

2016

Electrochimica Acta

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“…This result could be attributed to the stable SiO 2 /C network structure because the amorphous SiO 2 within the composite nanofiber structure reduced to Li 2 O and Li 4 SiO 4 in the initial lithiation process, which could help buffer the volume change caused by the alloying of Si nanoparticles with Li, and thereby increasing the cycling stability by minimizing the pulverization of the active Si material and the loss of electrical contact between Si nanoparticles and the carbon nanofiber matrix. 32,42 From Figure 9, it was also seen that the cycling performance of CVD carbon-coated Si/SiO 2 /C nanofibers was even better than that of Si/SiO 2 /C nanofibers. The capacity retention and coulombic efficiency of CVD carbon-coated Si/SiO 2 /C nanofibers was 91% and 97.4%, respectively, at the 50th cycle.…”

Section: Resultsmentioning

confidence: 97%

“…When SiO 2 was formed in the PVA matrix, the -OH stretching peak of PVA at around 3300 cm −1 was reduced, which could be explained by the intermolecular interaction between the -OH groups of PVA and silica. [30][31][32] In addition, the broad Si-O-Si peak around 1100 cm −1 contained a shoulder at around 1200 cm −1 , which could be attributed to the reaction between -OH groups of PVA and silanol groups of silica. The formation of this new bond and the reduction of -OH bond intensity demonstrated that silica crosslinked with PVA and formed a network structure containing Si-O-PVA-O-Si bridges (Figure 3).…”

Section: Resultsmentioning

confidence: 99%

Carbon-Confined PVA-Derived Silicon/Silica/Carbon Nanofiber Composites as Anode for Lithium-Ion Batteries

Dirican

Yanılmaz

et al. 2014

J. Electrochem. Soc.

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Novel silicon/silica/carbon (Si/SiO 2 /C) composite nanofibers were synthesized by electrospinning and subsequent heat-treatment of a mixture of Si nanoparticles, sol-gel tetraethyl orthosilicate solution, and aqueous polyvinyl alcohol solution. These Si/SiO 2 /C nanofiber composites were also coated with amorphous carbon by chemical vapor deposition (CVD) technique. The CVD carboncoated nanofiber composites formed freestanding, conductive nonwoven mats that were used directly as binder-free anodes in lithium-ion batteries. Results indicated that the SiO 2 component of the composite anodes provided sufficient buffer function to accommodate the volume expansion of the Si nanoparticles and the CVD amorphous carbon coating helped maintain the Si nanoparticles within the carbon nanofiber matrix during repetitive charging and discharging processes. Electrochemical performance tests showed that the capacity retention of CVD carbon-coated Si/SiO 2 /C nanofiber composites was greater than 91% and the corresponding coulombic efficiency was 97.4% at the 50th cycle. Electrochemical energy storage has been demonstrated as one of the most promising technologies for different applications such as grid storage, electric vehicles, and portable electronic devices.1-3 Because of their superior properties, including high energy density, good cycle life and good power performance, lithium-ion batteries are considered as the most preferred rechargeable battery technology in recent years.4-6 The development of high-capacity electrode materials for high-energy lithium-ion batteries is critically important for technological improvements on portable electronics and electric vehicles that use lithium-ion batteries as the power source. 7,8 Current commercial lithium-ion batteries use graphitic materials in the anode. However, graphitic anode materials cannot meet the capacity requirements of future portable electronics because of their low specific capacity of 372 mAh g −1 . 7,9,10 Lithium storage capacities of alloy-type anodes, such as silicon (Si), tin, germanium, etc., are much higher than that of commercially-used intercalation-type graphite anodes. Among all alloy-type anodes, Si has the highest theoretical capacity of 4200 mAh g −1 , making it the best candidate for next-generation high-energy lithium-ion batteries.11-13 However, the insertion of lithium ions into Si during cycling induces large volumetric change (up to 400%), which causes intense pulverization of active Si material, loss of electrical contact between Si and carbon conductor, and unstable solid electrolyte interphase (SEI) formation on the Si surface.14-16 These drawbacks bring together the performance degradation of active Si material during repetitive lithiation and de-lithiation processes. 17,18 To eliminate the aforementioned drawbacks, Si-based composite anodes have been widely investigated. Among them, Si/carbon (Si/C) composites have drawn great attention, which can potentially combine the advantageous properties of Si (high capacity) and C (excellent electr...

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“…[17][18][19][20] Generally, carbonaceous materials are highly attractive for applications in energy conversion and storage systems such as LIB electrode material, 21 the supporting matrix for catalysts in fuel cells, 22 and electrochemical capacitors. 23 Yao et al 24 claimed that C-SiO 2 prepared by pyrolysis product of sucrose coating on SiO 2 particle with 50.1% SiO 2 showed high storage capacity and good cycling stability which remained above 500 mAh g ¹1 at 50th cycle due to the carbon leading to lower interfacial impedance and higher storage capacity. Wang et al 25 prepared nano-sized SiO x /C composite with an O/Si ratio close to 1 exhibited a higher reversible capacity of about 800 mAh g ¹1 but low initial coulombic efficiency, which ensured the good rate capacity by the nano feature of the SiO x /C particle and the electronic conductive nature of carbon coating layer.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of SiO<sub>2</sub>/C Composite and Its Application as Anode Material for Lithium Ion Batde

et al. 2015

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SiO 2 /C composite as an anode material of lithium ion batteries was prepared by a facile synthesis method using raw materials of polyaniline and silicon dioxide. The SiO 2 /C composite shows the higher reversible capacity of 533.4 mAh g −1 after 100th cycles with good cycling stability. This improvement of electrochemical performance of the synthesized composite is benefit from the carbon coated on the SiO 2 nanospheres, which improves the electrical conductivity and restrains the volume variation during the lithiation and delithiation process. Due to the superior electrochemical performance, the SiO 2 /C composite prepared via facile synthesis could be promising as anode materials with high capacity, low-cost for lithium-ion batteries.

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Carbon-coated SiO2 nanoparticles as anode material for lithium ion batteries

Cited by 273 publications

References 22 publications

Novel Nanostructured SiO2/ZrO2 Based Electrodes with Enhanced Electrochemical Performance for Lithium-ion Batteries

Novel Nanostructured SiO2/ZrO2 Based Electrodes with Enhanced Electrochemical Performance for Lithium-ion Batteries

Carbon-Confined PVA-Derived Silicon/Silica/Carbon Nanofiber Composites as Anode for Lithium-Ion Batteries

Facile Synthesis of SiO<sub>2</sub>/C Composite and Its Application as Anode Material for Lithium Ion Batde

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