Structural design of Ni-silicate/CNT hybrid films as anode materials for highly reversible lithium and sodium storage

Lu, Pengyi; Yan, Xiao; Wang, Xinzhong; Hou, Feng; Liang, Ji

doi:10.1016/j.susmat.2021.e00375

Cited by 8 publications

(18 citation statements)

References 72 publications

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“…In the process of charging and discharging, the possible mechanism can be described as follows. [27,44] Fe…”

Section: Resultsmentioning

confidence: 99%

“…[34,35] The nanostructure of FS shortens the path of lithium/ sodium ions and electrons. [25][26][27] Porous carbon hollow spheres can improve the conductivity and accommodate the volume variation during cycling, contributing to electrode integrity and cycling stability. [19,36,37] The heterointerface of PC@FS exhibits interfacial lithium/sodium storage.…”

Section: Introductionmentioning

confidence: 99%

“…[22,23] Designing hierarchical nanostructure and compositing carbonaceous materials are effective means to enhance electrochemical performance. [24][25][26][27] Hierarchical nanostructures can not only shorten the ions and electron transport length but also buffer the strain caused by volumetric variation during cycling. [28][29][30] The composited carbonaceous materials can effectively improve the conductivity.…”

mentioning

confidence: 99%

“…[28][29][30] The composited carbonaceous materials can effectively improve the conductivity. [24][25][26][27]31] Zhu and his co-workers synthesized manganese silicate/graphene oxide composite (MS/GO). Porous and low-crystalline MS hollow spheres composed of nanobubbles accommodate the volume variation and facilitate the Li þ /Na þ diffusion.…”

mentioning

confidence: 99%

“…It also delivers a capacity of 643.7 mAh g À1 at 0.05 A g À1 in SIBs. [27] Zhou synthesized CNT@nickel silicate composite film for high-performance sodium storage, showing a high specific capacity up to 390 mAh g À1 at 50 mA g À1 for sodium storage. [31] The results indicate that metal silicates can be explored as potential candidates for both LIBs and SIBs.As a typical metal silicate, ferric silicate has many advantages, because ferric is abundant in the Earth's crust, is of low price, and environment friendly.…”

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confidence: 99%

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Porous Carbon@Ferric Silicate Hollow Spheres for Enhanced Lithium and Sodium Storage

Cui

Tang

et al. 2022

Energy Tech

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The intrinsic poor conductivity and large volume variation of ferric silicate severely hinder its practical application. Herein, a unique double‐shell‐structured amorphous porous carbon@ferric silicate hierarchical hollow sphere (PC@FS) is designed to improve its electrochemical performance. The amorphous feature of PC@FS is favorable for Li+/Na+ diffusion and avoids the structure collapse. FS nanosheets shorten the transport path of lithium/sodium ions. The hollow carbon spheres not only boost the conductivity but also accommodate volume variation. Besides, the heterointerface of PC@FS exhibits interfacial lithium/sodium storage. The synergistic effects bestow PC@FS enhanced lithium and sodium storage with high reversible capacity, excellent rate performance, and remarkable cycling stability. It manifests a capacity as high as 625.7 mAh g−1 at 5 A g−1 after 1000 cycles for lithium‐ion batteries and 315.7 mAh g−1 at 0.05 A g−1 after 50 cycles for sodium‐ion batteries.

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“…In the process of charging and discharging, the possible mechanism can be described as follows. [27,44] Fe…”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Porous Carbon@Ferric Silicate Hollow Spheres for Enhanced Lithium and Sodium Storage

Cui

Tang

et al. 2022

Energy Tech

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Fe₃O₄ Nanoparticles Enhanced Amorphous Ferric Silicate/Reduced Graphene Oxide for High‐Performance Lithium‐Ion Storage

Tang

et al. 2022

Adv Materials Inter

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Metal silicates characterized as layered structure can promote the reversible intercalation/deintercalation of lithium ions, which are considered as promising anodes due to their high capacity and abundant reserves. [16][17][18][19] However, metal silicates have fatal defects due to their poor electrical conductivity (≈10 −4 -10 −8 S m −1 ) and large volumetric variation during cycling, causing poor rate capability and cycling performance. [20,21] To tackle these issues, researchers adopt two effective strategies, compounding metal silicates with carbonaceous materials and dwindling the material size from bulk to nanosize. [22][23][24] For instance, ultrathin nickel silicate nanoplates embedded into porous carbon tube (CNT) have been fabricated using tubular porous carbon/silica as raw materials by Lu group. The composite shows pleasurable rate performance and low capacity deterioration. [22] Wang et al. synthesized sandwich-like structure composite with nickel silicate nanoplates grown on reduced graphene oxide (RGO), which exhibits highly reversible lithium storage. [23] The nanoplate structure can shorten the transportation distance of lithium ion. The cooperation of CNT and RGO can improve the electronic conductivity effectively. The flexibility of CNT and RGO can relax the volume change during cycling. It manifests that combining two strategies together can greatly enhance the electrochemical performance of the composites.As a typical metal silicates, ferric silicate (FS) has been explored as anode material and exhibits electrochemical activity. [25][26][27] Due to its poor electronic conductivity and large volumetric variation, the lithium storage is not so satisfactory. It is reported that the composite decorated with good conductivity nanoparticles can improve its electrical conductivity and enhance the lithium storage. [11][12][13] Fe 3 O 4 has excellent conductivity with the conductance coefficient of 2.5 × 10 4 S m −1 , much higher than FS. Therefore, a unique hybrid structure with Fe 3 O 4 @ferric silicate anchored on the RGO is fabricated (FO@FS/RGO) via facile hydrothermal method to improve the electrochemical performance.As shown in Figure 1, in step I, SiO 2 was deposited on the surface of GO via modified Stöber method. In step II, SiO 2 was in situ transformed into amorphous FS nanosheets and FO nanoparticles are embedded in the nanosheets via Ferric silicate (FS) has been explored as a potential lithium ion batteries candidate for its environment benign, low cost, rich reserves, and high capacity. Despite these advantages, poor electronic conductivity and large volume variation obstruct its practical utilization. To improve its electrochemical performance, a unique hybrid structure with Fe 3 O 4 @ferric silicate nanosheets anchored on the reduced graphene oxide (FO@FS/RGO) is fabricated. The disordered amorphous nanosheet structure of FS not only shortens the transferred length for lithium ions but also facilities the Li + diffusion and can effectively keep the structure integrity. RGO substrate...

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Mn‐doping ensuring cobalt silicate hollow spheres with boosted electrochemical property for hybrid supercapacitors

Ding,

Wang,

Wang

et al. 2023

Battery Energy

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Recently, transition metal silicates (TMSs) have garnered significant attention as promising candidates for electrode materials in supercapacitors (SCs), especially cobalt silicate (Co2SiO4, CoSi) related materials. However, due to the poor conductivity and narrow potential range of CoSi, its electrochemical properties are not fully developed and far from desirable. Herein, to enhance the electrochemical properties of CoSi, hollow spheres of Mn‐doped CoSi (CoMnSi) were fabricated through a hydrothermal method. The dopant Mn facilitates the formation of CoMnSi hollow spheres assembled by nanosheets and these nanosheets connect with each other to form the core‐shell hollow architecture. The effect of the Mn/Co ratio on the electrochemical properties of CoSi has been investigated. CoMnSi‐2 (Mn/Co = 1/9) displays the specific capacitance of 495 F g−1 at 0.5 A g−1, surpassing to that of CoSi (279 F g−1 at 0.5 A g−1) and manganese silicate (denoted as MnSi, 38 F g−1 at 0.5 A g−1). The CoMnSi‐2//active carbon hybrid supercapacitor (CoMnSi‐2//AC HSC) achieves the specific capacitance with 181 mF cm−2 (151 F g−1) at 1 mA cm−2 and energy density with 0.644 Wh m−2 at 2 W m−2. The device displays a practical application by powering the LED lamp circuit bulb working for more than 25 min repeatedly. The performance achieved by CoMnSi is superior to some state‐of‐the‐art electrode materials of TMSs. Density functional theory calculations have provided evidence that Mn‐doping enhances the electronic conductivity and reduces the electron transport barrier of CoSi, boosting its electrochemical properties. This work supplies a strategy for tailoring structures of TMSs to enhance their electrochemical performance.

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Structural design of Ni-silicate/CNT hybrid films as anode materials for highly reversible lithium and sodium storage

Cited by 8 publications

References 72 publications

Porous Carbon@Ferric Silicate Hollow Spheres for Enhanced Lithium and Sodium Storage

Porous Carbon@Ferric Silicate Hollow Spheres for Enhanced Lithium and Sodium Storage

Fe₃O₄ Nanoparticles Enhanced Amorphous Ferric Silicate/Reduced Graphene Oxide for High‐Performance Lithium‐Ion Storage

Mn‐doping ensuring cobalt silicate hollow spheres with boosted electrochemical property for hybrid supercapacitors

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Structural design of Ni-silicate/CNT hybrid films as anode materials for highly reversible lithium and sodium storage

Cited by 8 publications

References 72 publications

Porous Carbon@Ferric Silicate Hollow Spheres for Enhanced Lithium and Sodium Storage

Porous Carbon@Ferric Silicate Hollow Spheres for Enhanced Lithium and Sodium Storage

Fe3O4 Nanoparticles Enhanced Amorphous Ferric Silicate/Reduced Graphene Oxide for High‐Performance Lithium‐Ion Storage

Mn‐doping ensuring cobalt silicate hollow spheres with boosted electrochemical property for hybrid supercapacitors

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Fe₃O₄ Nanoparticles Enhanced Amorphous Ferric Silicate/Reduced Graphene Oxide for High‐Performance Lithium‐Ion Storage