Uniform coating of nano-carbon layer on SiOx in aggregated fluidized bed as high-performance anode material

Xiao, Zhexi; Yu, Chunhui; Lin, Xianqing; Chen, Xiao; Zhang, Chenxi

doi:10.1016/j.carbon.2019.04.051

Cited by 45 publications

(22 citation statements)

References 50 publications

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“…The X‐ray powder diffraction (XRD) technique was performed to identify the crystal structure and phase components of mesoporous SiO x @NC. As shown in Figure S2, the broad diffraction peak at 20°‐23° can be observed for all the SiO x @NC samples, indicating an amorphous or a low crystallinity feature, which are well in accordance with amorphous SiO x and amorphous carbon [1c] . To further investigated the chemical components of the SiO x @NC, the FT‐IR measurement was carried.…”

Section: Resultsmentioning

confidence: 70%

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Nitrogen‐Doped Carbon‐Encapsulated Ordered Mesoporous SiO_x as Anode for High‐Performance Lithium‐Ion Batteries

Gao

Peng

Guan

2022

Chemistry An Asian Journal

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SiO x (0 < x < 2) has been broadly investigated as a promising anode in lithium-ion batteries (LIBs) due to its high theoretical capacity, low cost, and proper working voltage. Nevertheless, its practical application is hindered by volume expansion during the lithiation process and low electrical conductivity, resulting in rapid capacity decay. Herein, we designed a core-shell structured nitrogen-doped carbonencapsulated ordered mesoporous SiO x composite (SiO x @NC) using 3-aminophenol-formaldehyde (3-AF) as carbon and nitrogen precursor, tetraethyl orthosilicate (TEOS) as the silica precursor, and cationic surfactant cetyltrimethylammonium bromide (C 16 TAB) as the mesoporous template. The obtained composite electrode not only can effectively reduce the volume expansion, but also can effectively improve electronic conductivity and further enhance the charge and ion transfer kinetics. Benefiting from the unique structural merits, the obtained SiO x @NC-2 delivers a high reversible capacity of 602.4 mAh g À 1 at 0.1 A g À 1 after 100 cycles and long-term cyclability (maintain 426.1 mAh g À 1 over 1000 cycles at 1 A g À 1 ).

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Section: Resultsmentioning

confidence: 70%

“…Among them, due to the high electrical conductivity and chemical stability, carbon materials are the most studied conductive material. And different SiO x /carbon composites have been designed [1a,c,6] . For example, Chen et al [7] .…”

Section: Introductionmentioning

confidence: 99%

Nitrogen‐Doped Carbon‐Encapsulated Ordered Mesoporous SiO_x as Anode for High‐Performance Lithium‐Ion Batteries

Gao

Peng

Guan

2022

Chemistry An Asian Journal

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“…To mitigate the challenges above, an effective strategy is to engineer its composite with conductive carbon or provide buffer structure toward the volume variation. − Park et al designed a porous SiO x with high specific surface area, which showed an initial charge capacity of 730 mA h·g –1 and a Columbic efficiency of 52% but a considerable capacity retention of 86.3% after 100 cycles . A unique watermelon-like structure of the SiO x –TiO 2 @C anode was engineered via the sol–gel method by Li et al, which performed an initial charge capacity and Columbic efficiency of 1011 mA h·g –1 and 63%, respectively.…”

Section: Introductionmentioning

confidence: 99%

Boosting Cyclability and Rate Capability of SiO_x via Dopamine Polymerization-Assisted Hybrid Graphene Coating for Advanced Lithium-Ion Batteries

Gu¹,

Wang

Zeng

et al. 2022

ACS Appl. Mater. Interfaces

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SiO x suffers from the 200% volume change during cycling and low electronic conductivity, resulting in poor cyclability and rate capability as a lithium-ion battery anode. Herein, we demonstrate a dopamine polymerization-guided carbon coating for SiO x anodes (SiO x @PDA@GNH). SiO x @PDA@GNH delivers charge capacities of 1269 and 1140 mA h·g–1 at charge rates of 0.05 and 3 C, respectively, and a capacity retention of 79.60% after 150 cycles at 1 C. A full cell with LiNi0.8Co0.1Mn0.1O2 or cathode demonstrates a capacity retention of >80% after 100 cycles at the rate of 0.33 C with an area capacity over 3.2 mA h·cm–2. Suppressed crack and overgrowth of the SEI layer are the key contributions for the improved performance. These results enlighten a practical pathway for the designing and modifications of SiO x anodes for high energy density lithium-ion batteries.

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“…10–12 However, the practical application of SiO x anodes is still limited by large volume expansion and slow electron/ion transport. 13–15…”

Section: Introductionmentioning

confidence: 99%

“…[10][11][12] However, the practical application of SiO x anodes is still limited by large volume expansion and slow electron/ion transport. [13][14][15] Combining SiO x and carbon materials is an effective method to solve the abovementioned problems. To date, various carbon-containing SiO x materials have been reported to improve the performance of SiO x -based electrodes.…”

Section: Introductionmentioning

confidence: 99%

One-step synthesis of uniformly distributed SiO_x–C composites as stable anodes for lithium-ion batteries

Chen

2022

Dalton Trans.

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Uniform coating of nano-carbon layer on SiOx in aggregated fluidized bed as high-performance anode material

Cited by 45 publications

References 50 publications

Nitrogen‐Doped Carbon‐Encapsulated Ordered Mesoporous SiO_x as Anode for High‐Performance Lithium‐Ion Batteries

Nitrogen‐Doped Carbon‐Encapsulated Ordered Mesoporous SiO_x as Anode for High‐Performance Lithium‐Ion Batteries

Boosting Cyclability and Rate Capability of SiO_x via Dopamine Polymerization-Assisted Hybrid Graphene Coating for Advanced Lithium-Ion Batteries

One-step synthesis of uniformly distributed SiO_x–C composites as stable anodes for lithium-ion batteries

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Uniform coating of nano-carbon layer on SiOx in aggregated fluidized bed as high-performance anode material

Cited by 45 publications

References 50 publications

Nitrogen‐Doped Carbon‐Encapsulated Ordered Mesoporous SiOx as Anode for High‐Performance Lithium‐Ion Batteries

Nitrogen‐Doped Carbon‐Encapsulated Ordered Mesoporous SiOx as Anode for High‐Performance Lithium‐Ion Batteries

Boosting Cyclability and Rate Capability of SiOx via Dopamine Polymerization-Assisted Hybrid Graphene Coating for Advanced Lithium-Ion Batteries

One-step synthesis of uniformly distributed SiOx–C composites as stable anodes for lithium-ion batteries

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Product

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Nitrogen‐Doped Carbon‐Encapsulated Ordered Mesoporous SiO_x as Anode for High‐Performance Lithium‐Ion Batteries

Nitrogen‐Doped Carbon‐Encapsulated Ordered Mesoporous SiO_x as Anode for High‐Performance Lithium‐Ion Batteries

Boosting Cyclability and Rate Capability of SiO_x via Dopamine Polymerization-Assisted Hybrid Graphene Coating for Advanced Lithium-Ion Batteries

One-step synthesis of uniformly distributed SiO_x–C composites as stable anodes for lithium-ion batteries