One-step synthesis method of flower-like Si@NiO/rGO composites as high-performance anode for lithium-ion batteries

Pan, Jinghong; Sun, Chuxiao; Liu, Jiajun; Zhao, Xishan; Jiao, Chunxiao; Wang, Chengkai; Wang, Qi

doi:10.1016/j.jallcom.2023.169506

Cited by 22 publications

(6 citation statements)

References 66 publications

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“…The optical band gap (Eg) was determined from the transmittance plot. The absorption coefficient (α) was calculated using Lambert's law, as shown in (2).…”

Section: Characterizationmentioning

confidence: 99%

“…NiO is widely used by researchers due to its exceptional characteristics. This material is used in various fields, such as battery cathodes [2], solar cells [3], electrochromic coatings [4], antiferromagnetic materials [5], smart windows [6], and supercapacitors [7], due to its remarkable properties such as having a wide band gap ranging between 3.6 to 4.0 eV. The surface area, color, and nonstoichiometric levels of NiO samples can vary depending on the preparation conditions [8].…”

Section: Introductionmentioning

confidence: 99%

“…The values obtained are presented in Table3. The Eg values were gained from the linear line graph of (αhv)2 versus photon energy (hv), and the estimated values for undoped NiO and Li-doped NiO are 3.94 eV and 3.95 eV, respectively. Based on the results, the Eg values of the samples fall within the range of 3.6 -4.0 eV, which is consistent with the literature[20].…”

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confidence: 99%

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Undoped and Li-Doped NiO Coral Reef-like Structures Fabricated using Immersion Method

Ladjahirin,

Parimon,

Mamat

et al. 2024

MATEC Web Conf.

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Nickel oxide (NiO) is one of the p-type semiconductors with unique properties suitable for nanosensor applications. It has a wide range band gap and can be fabricated in various methods, leading to different nanostructures and results. In this study, undoped and lithium (Li)-doped NiO were fabricated using the immersion method to investigate their properties. The field emission scanning electron microscopy analysis revealed that both samples produced two layers of nanosheet and nano coral reef-like (CR) structures. X-ray diffraction patterns confirmed the average crystallite sizes for undoped and Li-doped NiO are 24.70 nm and 31.19 nm, respectively. According to ultraviolet-visible spectroscopy, Li-doped NiO has a higher average transmittance percentage of 53% compared to undoped NiO, which has 40%. The estimated optical band gap values are not much different, with 3.94 eV for undoped and 3.95 eV for Li-doped. Electrical measurements also indicated that Li-doped NiO has a higher conductivity value of 7.9 x 10-2 S.m-1, whereas undoped NiO has 7.71 x 10-2 S.m-1.

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“…The optical band gap (Eg) was determined from the transmittance plot. The absorption coefficient (α) was calculated using Lambert's law, as shown in (2).…”

Section: Characterizationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Undoped and Li-Doped NiO Coral Reef-like Structures Fabricated using Immersion Method

Ladjahirin,

Parimon,

Mamat

et al. 2024

MATEC Web Conf.

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“…However, several issues prevent Si from being widely used in anodes . For example, the silicon surface produces a solid electrolyte interface (SEI) layer during charging and discharging, which leads to a shortened cycle life, most notably due to the relatively large volume expansion of the silicon electrodes (up to 300%) and even pulverization when embedded with lithium ions, as well as the relatively low electrical conductivity of silicon, Together, these factors contribute to the dramatic drop in battery capacity in the presence of poor cycling. Researchers have suggested a number of strategies to lessen the negative effects of Si-based anodes, with the most prominent one being the cladding of Si NPS with other conductive/protective materials, which can increase ionic conductivity and buffer the volume change of silicon and nitride during battery charging and discharging, as demonstrated by Liu et al Fe-FeC 3 @Si–C composites were designed and created in order to limit Si volume expansion and prevent irreversible damage to the electrode sheet’s structural integrity from the intense stress that was created inside the electrode sheet.…”

Section: Introductionmentioning

confidence: 99%

Seaweed─Modification of Si by Natural Nitrogen-Doped Porous Biochar for High-Efficiency Lithium Batteries

Sang,

Sun,

Pan

et al. 2024

ACS Appl. Mater. Interfaces

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Due to the porous structure and high electrical conductivity of carbon materials, lithium-ion batteries (LIBs) frequently employ carbon cladding to modify silicon anodes. However, the high cost and convoluted manufacturing process have prevented widespread use of carbon-based materials. Due to the abundance of seaweed (Gelidium amansii: GAm), there is a developing interest in seaweed's additional uses. We present, for the first time in lithium-ion batteries, the modification of silicon anodes by algal biomass carbon, which was thoroughly analyzed morphologically, structurally, and electrochemically. Seaweed's biomass carbon is porous and highly linked, making it ideal for evenly enclosing silicon nanoparticles and supplying the porous carbon skeleton with sufficient nitrogen after annealing. The Si@ self-encapsulated naturally nitrogen-doped biochar prepared from seaweed composites displayed reversible capacities of 1111.61 mAh g −1 after 500 cycles at a high current of 1 A g −1 and 714.08 mAh g −1 after 1000 cycles at the same current density.

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“…Therefore, graphene oxide has attracted much attention in the field of humidity sensing [ 28 , 29 , 30 ]. Furthermore, due to the large surface-to-volume ratio caused by the porous structure, weak bonding ability with hydroxyl groups in water molecules, and dense pores, multi-walled carbon nanotubes (MWCNTs) exhibit a capillary effect on humidity, thus generating a capacitive response [ 31 , 32 , 33 , 34 , 35 ]. Hydroxylated MWCNTs contain hydroxyl groups, which can form hydrogen bonds with water, resulting in an improved overall water-absorption performance.…”

Section: Introductionmentioning

confidence: 99%

GO/CNT−OH/Nafion Nanocomposite Humidity Sensor Based on the LC Wireless Method

Wang,

Jiao,

Wang

et al. 2023

Nanomaterials

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In recent years, LC resonant sensors have gained widespread attention for their extensive applications in industries such as pharmaceutical storage and food transportation. A wireless passive sensor with a good sensing performance is proposed based on a GO/CNT−OH/Nafion nanocomposite. The sensor was fabricated via inkjet printing technology, and the surface morphology of the GO/CNT−OH/Nafion nanocomposite was characterized by SEM measurement. It is found that the MWCNTs support the GO layer and the hydrophobic chains of Nafion interact with the hydrophobic layer of GO, resulting in a larger cavity and hydrophilic surface of the entire material. This structure well reflects the fact that the mixing of MWCNTs and Nafion provides the entire material with a stronger water absorption. The experimental study shows that the proposed humidity sensor has a frequency variation of 103 kHz/%RH at low humidity (30–60% RH) and a sensitivity of 931 kHz/%RH at high humidity (60–95% RH), while the sensitivity value from 30–95% RH is 547 kHz/% RH. The response time and recovery time are 110 s and 115 s, respectively. In addition, the tests showed that the GO/CNT−OH/Nafion nanocomposite applied to the humidity sensor had a maximum humidity hysteresis of about 3% RH at 30–95% RH, the resonant frequency remained basically unchanged after 50 h of testing, and the whole sensor possessed a good stability. After conducting several repeated experiments, it was found that the resonant frequency error of the whole sensor was low and did not affect the overall sensing test, which proved the reproducible preparation of the sensor. Finally, the humidity-sensing mechanism of the proposed sensor was analyzed in this paper, and it was found that GO enhanced the hygroscopic properties of GO/CNT−OH/Nafion nanocomposite when it was supported by MWCNT-OH and included uniformly dispersed Nafion. Therefore, our proposed humidity sensor is suitable for humidity detection above 30% RH in both sealed and open environments.

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One-step synthesis method of flower-like Si@NiO/rGO composites as high-performance anode for lithium-ion batteries

Cited by 22 publications

References 66 publications

Undoped and Li-Doped NiO Coral Reef-like Structures Fabricated using Immersion Method

Undoped and Li-Doped NiO Coral Reef-like Structures Fabricated using Immersion Method

Seaweed─Modification of Si by Natural Nitrogen-Doped Porous Biochar for High-Efficiency Lithium Batteries

GO/CNT−OH/Nafion Nanocomposite Humidity Sensor Based on the LC Wireless Method

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