Scalable synthesis of N-doped Si/G@voids@C with porous structures for high-performance anode of lithium-ion batteries

Wang, Lei; Jiang, Yan; Li, Shao-Yuan; Chen, Xiu-Hua; Xi, Feng-Shuo; Wan, Xiao-Han; Ma, Wen-Hui; Deng, Rong

doi:10.1007/s12598-023-02472-0

Cited by 53 publications

(9 citation statements)

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“…To further ascertain the contribution ratio of the two distinct storage processes, a quantitative calculation can be performed using eq 11. 11) where I, ν, k 1 , and k 2 denote the output current, scan rate, and two constants, respectively. After controlled sulfurization, there is a notable increase in the dominance of the capacitivecontrolled process (Figure S12).…”

Section: Resultsmentioning

confidence: 99%

“…13−17 Nevertheless, the rather low energy density of SCs precludes future deployment, and the possibility of addressing this issue directly points to the crucial component of SCs�electrode materials. 11,18,19 The key lies in how to judiciously design and construct complicated electrodes to overcome the bottleneck of SCs. 20 So far, battery-type electrode materials, such as metal hydroxides, metal sulfides, and metal oxides, have garnered a lot of interest from researchers owing to their high theoretical capacity.…”

Section: Introductionmentioning

confidence: 99%

“…Nowadays, the burgeoning industrial progress has led to the increasingly conspicuous emergence of environmental issues. − The need for energy conversion and storage technologies has skyrocketed as a result of the rapid development of green energy. − Many novel devices are being investigated for energy storage applications, including but not limited to lithium-ion batteries, , Ca/Al/Zn-ion batteries, ,,, supercapacitors, and so forth. Among them, supercapacitors (SCs) have received a lot of interest as potential future energy storage devices due to impressive specific capacitance, exceptional cycling stability, high power density, cost-effectiveness, and environmental friendliness, showing great promise for renewable energy. − Nevertheless, the rather low energy density of SCs precludes future deployment, and the possibility of addressing this issue directly points to the crucial component of SCselectrode materials. ,, The key lies in how to judiciously design and construct complicated electrodes to overcome the bottleneck of SCs …”

Section: Introductionmentioning

confidence: 99%

“…1−6 The need for energy conversion and storage technologies has skyrocketed as a result of the rapid development of green energy. 7−10 Many novel devices are being investigated for energy storage applications, including but not limited to lithium-ion batteries, 5,11 Ca/Al/Zn-ion batteries, 6,9,10,12 supercapacitors, and so forth. Among them, supercapacitors (SCs) have received a lot of interest as potential future energy storage devices due to impressive specific capacitance, exceptional cycling stability, high power density, cost-effectiveness, and environmental friendliness, showing great promise for renewable energy.…”

Section: Introductionmentioning

confidence: 99%

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Constructing Hierarchical CoGa₂O₄–S@NiCo-LDH Core–Shell Heterostructures with Crystalline/Amorphous/Crystalline Heterointerfaces for Flexible Asymmetric Supercapacitors

Li,

Huang

et al. 2024

ACS Appl. Mater. Interfaces

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The rational design and construction of composite electrodes are crucial for overcoming the issues of poor working stability and slow ionic electron mobility of a single component. Nevertheless, it is a big challenge to construct core−shell heterostructures with crystalline/amorphous/crystalline heterointerfaces in straightforward and efficient methods. Here, we have successfully converted a portion of crystalline CoGa 2 O 4 into the amorphous phase by employing a facile sulfidation process (denoted as CoGa 2 O 4 −S), followed by anchoring crystalline NiCo-layered double hydroxide (denoted as NiCo-LDH) nanoarrays onto hexagonal plates and nucleation points of CoGa 2 O 4 −S, synthesizing dual-type hexagonal and flower-like 3D CoGa 2 O 4 −S@NiCo-LDH core−shell heterostructures with crystalline/ amorphous/crystalline heterointerfaces on carbon cloth. Furthermore, we further adjust the Ni/Co ratio in LDH, achieving precise and controllable core−shell heterostructures. Benefiting from the abundant crystalline/amorphous/crystalline heterointerfaces and synergistic effect among various components, the CoGa 2 O 4 −S@Ni 2 Co 1 -LDH electrode exhibits a specific capacity of 247.8 mAh•g −1 at 1 A•g −1 and good rate performance. A CoGa 2 O 4 −S@Ni 2 Co 1 -LDH//AC flexible asymmetric supercapacitor provides an energy density of 58.2 Wh•kg −1 at a power density of 850 W•kg −1 and exhibits an impressive capacitance retention of 105.7% after 10,000 cycles at 10 A•g −1 . Our research provides profound insights into the design of other similar core−shell heterostructures.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Constructing Hierarchical CoGa₂O₄–S@NiCo-LDH Core–Shell Heterostructures with Crystalline/Amorphous/Crystalline Heterointerfaces for Flexible Asymmetric Supercapacitors

Li,

Huang

et al. 2024

ACS Appl. Mater. Interfaces

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“…Perovskite materials exhibit a variable direct bandgap energy ranging from 1.3 eV to 2.2 eV. This extended bandgap energy is attributed to their distinctive optical characteristics [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Structural, electronic, optical, and mechanical properties of cubic perovskite LaMnX₃ (X = Cl, Br, I) compound for optoelectronic applications: a DFT study

Shahzad,

Sana,

Tahir

et al. 2024

Phys. Scr.

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Perovskite materials are used extensively in the area of material science for theoretical computations. Density functional theory (DFT) calculations are used in this study to determine the properties of the cubic halide perovskite LaMnX3 (X = Cl, Br, and I). These compounds contain PM3M-221 space groups and a cubic structure. They were created via the Cambridge serial total energy package (CASTEP) program, which also used HSE (Heyd-Scuseria-Ernzerhof) exchange-correlation functionals. The structural, electrical, optical, and mechanical characteristics of the compounds are determined.LaMnCl3, LaMnBr3, and LaMnI3all have direct bandgaps of 2.366 eV, 1.844 eV, and 1.579 eV, respectively, based on their structural characteristics. Total and partial densities of states (TDOS and PDOS) offer proof of the degree of electron localization in specific bands. Electronic studies indicate that LaMnX3 materials (X = Cl, Br, I) are semiconductors. The dielectric function's extensive range of energy transparency can be seen in the imaginary element dispersion. LaMnCl3 compound's absorption and conductivity are preferable to those of LaMnBr3 and LaMnI3, improving its applicability for Optoelectronic applications and work function. We found that the cubic structures of all three compounds allow them to be mechanically stable. The calculated elastic results also satisfy the compound's mechanical strength requirements. Such materials are used in optoelectronic applications.

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Controllable Interface Engineering for the Preparation of High Rate Silicon Anode

Wang,

Lu,

et al. 2024

Adv Funct Materials

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Silicon (Si) is considered to be the promising candidate anode for the next generation of high‐energy‐density batteries. However, the poor initial coulombic efficiency (ICE) and rate performance severely hinder its commercial development. Here, fully exploits the 2D structure of photovoltaic silicon waste (PV‐WSi), combining with the advantage of controllable depositing layers offered by fluidized bed atomic layer deposition (FBALD), to simultaneously achieve high ICE and highrate performance of Si‐based anodes. The characteristic of Li+ embedding vertically into the plane direction of the 2D sheet‐like structure of PV‐WSi helps shorten the diffusion distance, alleviating the pulverization problem caused by volume expansion. FBALD is utilized to controllably deposit Li2O (≈1 nm) and TiO2 (≈4 nm) layers to compensate for the loss of Li sources, further suppressing the volume expansion of Si and isolating the side reactions between Si and electrolyte. The prepared Si@Li2O@TiO2 demonstrates ultrahigh ICE (90.9%) and outstanding rate performance (>900 mAh g−1 at a rate of 20 A g−1). Full cells with the Si@Li2O@TiO2 anode and LiFePO4 cathode deliver a stable capacity of 100 mAh g−1 after 300 cycles at 0.5 C. This work provides new ideas for the development of high ICE, high‐rate Si‐based anodes based on low‐cost photovoltaic waste.

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Scalable synthesis of N-doped Si/G@voids@C with porous structures for high-performance anode of lithium-ion batteries

Cited by 53 publications

References 50 publications

Constructing Hierarchical CoGa₂O₄–S@NiCo-LDH Core–Shell Heterostructures with Crystalline/Amorphous/Crystalline Heterointerfaces for Flexible Asymmetric Supercapacitors

Constructing Hierarchical CoGa₂O₄–S@NiCo-LDH Core–Shell Heterostructures with Crystalline/Amorphous/Crystalline Heterointerfaces for Flexible Asymmetric Supercapacitors

Structural, electronic, optical, and mechanical properties of cubic perovskite LaMnX₃ (X = Cl, Br, I) compound for optoelectronic applications: a DFT study

Controllable Interface Engineering for the Preparation of High Rate Silicon Anode

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Scalable synthesis of N-doped Si/G@voids@C with porous structures for high-performance anode of lithium-ion batteries

Cited by 53 publications

References 50 publications

Constructing Hierarchical CoGa2O4–S@NiCo-LDH Core–Shell Heterostructures with Crystalline/Amorphous/Crystalline Heterointerfaces for Flexible Asymmetric Supercapacitors

Constructing Hierarchical CoGa2O4–S@NiCo-LDH Core–Shell Heterostructures with Crystalline/Amorphous/Crystalline Heterointerfaces for Flexible Asymmetric Supercapacitors

Structural, electronic, optical, and mechanical properties of cubic perovskite LaMnX3 (X = Cl, Br, I) compound for optoelectronic applications: a DFT study

Controllable Interface Engineering for the Preparation of High Rate Silicon Anode

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Product

Resources

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Constructing Hierarchical CoGa₂O₄–S@NiCo-LDH Core–Shell Heterostructures with Crystalline/Amorphous/Crystalline Heterointerfaces for Flexible Asymmetric Supercapacitors

Constructing Hierarchical CoGa₂O₄–S@NiCo-LDH Core–Shell Heterostructures with Crystalline/Amorphous/Crystalline Heterointerfaces for Flexible Asymmetric Supercapacitors

Structural, electronic, optical, and mechanical properties of cubic perovskite LaMnX₃ (X = Cl, Br, I) compound for optoelectronic applications: a DFT study