Three-dimensional Porous Biogenic Si/C Composite for High Performance Lithium-ion Battery Anode Derived from Equisetum Fluviatile

Li, Kunru; Hu, Xinghui; Zhang, Zhengfu; Guo, Yuzhong; Huang, Ruian

doi:10.15541/jim20200525

Cited by 6 publications

(3 citation statements)

References 28 publications

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“…4 Numerous researchers have been investigating cutting-edge materials, such as cathode, anode, and electrolyte, 5 to increase performance. Because of its maximal capacity, Silicon 6 is the most promising anode material for next-generation lithium-ion batteries in terms of anode materials. At room temperature, the specific capacity of silicon is much larger than that of graphite (372 mAh g −1 ) 7 for 4200 mAh g −1 , 8 and silicon is abundantly available.…”

Section: ■ 1 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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Section: ■ 1 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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“…To solve the key challenges of microscale Si-based materials, recently, considerable efforts such as porous structures, 20 carbon coating 21,22 and novel binders 23 have been put forward to prepare Si-based electrodes. Among them, porous structures can significantly enhance the electrochemical performance and structural stability of the electrodes.…”

Section: Introductionmentioning

confidence: 99%

Modified preparation of Si@C@TiO₂ porous microspheres as anodes for high-performance lithium-ion batteries

Luo

Xiao

et al. 2023

Dalton Trans.

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“…To address these issues, researchers have designed rational methods to improve the performance, specifically converting the bulk silicon to form nanostructures such as silicon nanoparticles, coating modification, , and core–shell or yolk–shell structure. , The utilization of silicon nanoparticles can alleviate the expansion of the material and avoid the pulverization to a certain degree. Coating modification and core–shell structures could accelerate the mass transfer and prevent the direct contact of silicon and the electrolyte. − Designing a yolk–shell structure can introduce empty spaces for mitigating volume expansion.…”

Section: Introductionmentioning

confidence: 99%

In Situ Partial Pyrolysis of Sodium Carboxymethyl Cellulose Constructing Hierarchical Pores in the Silicon Anode for Lithium-Ion Batteries

Chang

Liu

Zha

et al. 2021

ACS Appl. Energy Mater.

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Silicon is an attractive anode material for the high-energy-density lithium-ion battery due to its high theoretical capacity (4200 mA h g −1 ). However, larger volume expansion (∼300%) and pulverization during cycling hinder the commercialization of silicon anodes. The modification of silicon materials is a widely recognized approach to enhance the anode performance, but the volume expansion cannot be solved completely when only focusing on the active material but ignoring the overall structural optimization of the anode. In the study, additional hierarchical pores were constructed in the electrodes by in situ partial pyrolysis of the binder sodium carboxymethyl cellulose (CMC) at low temperature. Benefiting from the extra buffer space, the electrodes can accommodate more expansion and enhance the conduction of electrons and ions. In addition, the partially degraded CMC reduced the adsorption energy between the binder and the active material, reducing the stress during the swelling process, which is demonstrated by density functional theory. The as-obtained electrode delivered a high reversible capacity of 1035 mA h g −1 at 1000 mA g −1 , while the capacity retention was 78.7%, and the Coulombic efficiency was stable at 99.3% after 200 cycles. The modification of the electrode structure provides guidance for the construction of high-efficiency anodes.

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Three-dimensional Porous Biogenic Si/C Composite for High Performance Lithium-ion Battery Anode Derived from Equisetum Fluviatile

Cited by 6 publications

References 28 publications

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

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

Modified preparation of Si@C@TiO₂ porous microspheres as anodes for high-performance lithium-ion batteries

In Situ Partial Pyrolysis of Sodium Carboxymethyl Cellulose Constructing Hierarchical Pores in the Silicon Anode for Lithium-Ion Batteries

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Three-dimensional Porous Biogenic Si/C Composite for High Performance Lithium-ion Battery Anode Derived from Equisetum Fluviatile

Cited by 6 publications

References 28 publications

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

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

Modified preparation of Si@C@TiO2 porous microspheres as anodes for high-performance lithium-ion batteries

In Situ Partial Pyrolysis of Sodium Carboxymethyl Cellulose Constructing Hierarchical Pores in the Silicon Anode for Lithium-Ion Batteries

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Modified preparation of Si@C@TiO₂ porous microspheres as anodes for high-performance lithium-ion batteries