Binder and conductive additive free silicon electrode architectures for advanced lithium-ion batteries

Sarode, Krishna Kumar; Choudhury, Rini; Martha, Surendra K.

doi:10.1016/j.est.2018.04.002

Cited by 7 publications

(4 citation statements)

References 26 publications

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“…Reversible capacity and cycle stability of silicon anodes significantly reduce upon cycling at deep cutoff potentials. Cycling silicon anodes above 50 mV reduce the formation of crystalline phases and result in good electrochemical performance. , Thus, galvanostatic charge–discharge cycling of our Si-NPs was carried out in the potential range between 1.2 and 0.05 V. The 3D Si–C composite electrodes annealed at different temperatures show higher reversible capacity (Figure a) compared to conventional silicon composite electrode which suggest 3D electrode architecture and enables the complete utilization of active material coated onto the CF compared to conventional silicon electrode. The conventional silicon composite electrodes show a high irreversible capacity of 48% with an initial lithiation capacity of 3201 mA h g –1 .…”

Section: Resultsmentioning

confidence: 99%

“…Silicon NPs are synthesized by magnesiothermic reduction of fumed silica. , In brief, 1:2 mol ratio of fumed silica and magnesium powder are mixed thoroughly in a mortar pestle for 1 h, followed by annealing at 700 °C under argon gas for 2 h. The obtained product was treated with 1 N HCl solution to eliminate MgO and Mg 2 Si-producing pure Si-NPs. Powder XRD patterns of Si-NPs, CFs, and so forth were performed by using a PANalytical X’Pert Pro diffractometer (The Netherlands) [reflection θ–θ geometry, Cu Kα (1.54 Å) radiation].…”

Section: Methodsmentioning

confidence: 99%

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Nanostructured Silicon–Carbon 3D Electrode Architectures for High-Performance Lithium-Ion Batteries

et al. 2018

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Silicon is an attractive anode material for lithium-ion batteries. However, silicon anodes have the issue of volume change, which causes pulverization and subsequently rapid capacity fade. Herein, we report organic binder and conducting diluent-free silicon–carbon 3D electrodes as anodes for lithium-ion batteries, where we replace the conventional copper (Cu) foil current collector with highly conductive carbon fibers (CFs) of 5–10 μm in diameter. We demonstrate here the petroleum pitch (P-pitch) which adequately coat between the CFs and Si-nanoparticles (NPs) between 700 and 1000 °C under argon atmosphere and forms uniform continuous layer of 6–14 nm thick coating along the exterior surfaces of Si-NPs and 3D CFs. The electrodes fabricate at 1000 °C deliver capacities in excess of 2000 mA h g –1 at C/10 and about 1000 mA h g –1 at 5 C rate for 250 cycles in half-cell configuration. Synergistic effect of carbon coating and 3D CF electrode architecture at 1000 °C improve the efficiency of the Si–C composite during long cycling. Full cells using Si–carbon composite electrode and Li 1.2 Ni 0.15 Mn 0.55 Co 0.1 O 2- based cathode show high open-circuit voltage of >4 V and energy density of >500 W h kg –1 . Replacement of organic binder and copper current collector by high-temperature binder P-pitch and CFs further enhances energy density per unit area of the electrode. It is believed that the study will open a new realm of possibility for the development of Li-ion cell having almost double the energy density of currently available Li-ion batteries that is suitable for electric vehicles.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Nanostructured Silicon–Carbon 3D Electrode Architectures for High-Performance Lithium-Ion Batteries

et al. 2018

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“…Conductive additives provided an electronic path in charging/discharging but after some cycles failed to contact silicon particles because conductive additives could not provide binding force Si particles (Beattie et al, 2008 ; Renganathan et al, 2010 ). To overcome these issues, numbers of conductive binders were used to improve electronic conductivity and stability of Si anode for long cycle life (Lin et al, 2016 ; Sarode et al, 2018 ). By taking the advantages of self-healing ability of a material, a conductive binder was prepared by use of ureidopyrimidinone (UPy) and polyethylene glycol (PEG).…”

Section: Applications Of Silicon-based Porous Nanomaterialsmentioning

confidence: 99%

Big Potential From Silicon-Based Porous Nanomaterials: In Field of Energy Storage and Sensors

et al. 2018

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Silicon nanoparticles (SiNPs) are the promising materials in the various applications due to their unique properties like large surface area, biocompatibility, stability, excellent optical and electrical properties. Surface, optical and electrical properties are highly dependent on particle size, doping of different materials and so on. Porous structures in silicon nanomaterials not only improve the specific surface area, adsorption, and photoluminescence efficiency but also provide numbers of voids as well as the high surface to volume ratio and enhance the adsorption ability. In this review, we focus on the significance of porous silicon/mesoporous silicon nanoparticles (pSiNPs/mSiNPs) in the applications of energy storage, sensors and bioscience. Silicon as anode material in the lithium-ion batteries (LIBs) faces a huge change in volume during charging/discharging which leads to cracking, electrical contact loss and unstable solid electrolyte interphase. To overcome challenges of Si anode in the LIBs, mSiNPs are the promising candidates with different structures and coating of different materials to enhance electrochemical properties. On the basis of optical properties with tunable wavelength, pSiNPs are catching good results in biosensors and gas sensors. The mSiNPs with different structures and modified surfaces are playing an important role in the detection of biomarkers, drug delivery and diagnosis of cancer and tumors.

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“…However, an in-depth investigation has demonstrated that electrode materials play a crucial role in the performance of lithium-based batteries. Finding appropriate electrode materials with high electronic conductivity, a large specific surface area, high efficiency, and great electrochemical performance is the major challenge toward developing efficient LIB storage systems. − Currently, several materials have been investigated as LIB electrodes, including metal oxide, − graphene, − carbon nanotubes, , and so on. Due to their superior electrical conductivity and large pore volume, these materials are considered as good electrodes or support materials for lithium-based batteries.…”

Section: Introductionmentioning

confidence: 99%

Exploring the Optical and Energetic Properties of a Co(II)-Based Mixed Ligand MOF

Abid,

Mjejri,

Jaballi

et al. 2024

Inorg. Chem.

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Due to their remarkable properties, including remarkable porosity and extensive surface area, metal−organic frameworks (MOFs) are being investigated for various applications. Herein, we report the first Co(II)-based mixed ligand MOF, formulated Co 4 (HTrz) 2 (D-cam) 2.5 (μ−OH) 3 . Its 3D structure framework is composed of helical chains {[Co 4 (μ 3 -HTrz) 4 ] 8+ } n connected by D-camphorate ligand building blocks and featured as an extended structure in an AB−AB fashion. The investigated compound displays a wide absorption range across the visible spectrum, characterized by an optical gap energy of 3.7 eV, indicating its semiconducting nature and efficient sunlight absorption capabilities across various wavelengths. The electrochemical performance demonstrated an excellent reversibility, cyclability, structural stability, as well as a specific capacity of up to 100 cycles at a scan rate of 0.1 mV•s −1 and a current density of 50 mA•g −1 . Thus, it showcases its ability to retain the capacity over numerous charge−discharge cycles. Additionally, the investigated sample displayed an impressive rate capability during the Liion charge/discharge process. Therefore, the material's remarkable electrochemical properties can be ascribed to the synergistic effects of its large specific surface area of 348.294 m 2 •g −1 and well-defined pore size distribution of 20.448 Å, making it a promising candidate for high-performance Li-ion batteries.

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Binder and conductive additive free silicon electrode architectures for advanced lithium-ion batteries

Cited by 7 publications

References 26 publications

Nanostructured Silicon–Carbon 3D Electrode Architectures for High-Performance Lithium-Ion Batteries

Nanostructured Silicon–Carbon 3D Electrode Architectures for High-Performance Lithium-Ion Batteries

Big Potential From Silicon-Based Porous Nanomaterials: In Field of Energy Storage and Sensors

Exploring the Optical and Energetic Properties of a Co(II)-Based Mixed Ligand MOF

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