Liquid Graphene Oxide Binder and Modified Glass Fiber Separator for Lithium Sulfur Battery with Highly Improved Cycling Performance

10.26434/chemrxiv.14160404 ◽

2021 ◽

Author(s):

maryam sadat kiai

Keyword(s):

Graphene Oxide ◽

Glass Fiber ◽

Polyvinylidene Fluoride ◽

Large Scale ◽

Cycling Performance ◽

Energy Storage Devices ◽

Shuttle Effect ◽

Metal Anode ◽

Lithium Dendrites ◽

Lithium Sulfur

Lithium sulfur (Li-S) batteries with high theoretical energy density (~2.5 kWh kg-1) and high theoretical gravimetric capacity (1672 mAh g-1) have drawn great attention as they are promising candidates for large scale energy storage devices. Unfortunately some technical obstacles hinder the practical application of Li-S batteries such as formation of polysulfide intermediates between cathode and anode as well as the insulating nature of sulfur cathode and other discharge products. Glass fiber separators provide some cavities to withstand the volume change of sulfur during cycling leading to long-term cycling stability. Here, application of polar materials with novel liquid graphene oxide (L-GO) binder rather than the standard polyvinylidene fluoride (PVDF) binder as effective coatings on the glass fiber separator of the Li-S cell have been developed to suppress the shuttle effect. The deposition of silicon dioxide (SiO2), titanium dioxide (TiO2) and poly (1,5-diaminoanthraquinone) (PDAAQ) with L-GO binder on the glass fiber separator was investigated with polycarboxylate functionalized graphene (PC-FGF/S) cathode and Li metal anode. The cells with modified coatings and L-GO as an efficient binder could accelerate conversion of long-chain polysulfides to short-chain polysulfides and significantly delayed the growth of lithium dendrites resulted the capacity retention of ~ 1020, 1070 and 1190 mAh g-1 for the cells with SiO2/L-GO, TiO2/L-GO and PDAAQ/L-GO coated separators after 100 cycles. The results demonstrate that ultrathin SiO2, TiO2 and PDAAQ containing coatings with L-GO binder on the glass fiber separator can drastically improve the cyclability of the Li-S cells.

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Combined enhanced redox kinetics and physiochemical confinement in three-dimensionally ordered macro/mesoporous TiN for highly stable lithium-sulfur batteries

Nanotechnology ◽

10.1088/1361-6528/ac3e30 ◽

2021 ◽

Author(s):

Jiabing Liu ◽

Chenchen Hu ◽

Wanjie Gao ◽

Haipeng Li ◽

Yan Zhao

Keyword(s):

Discharge Capacity ◽

Active Sites ◽

Surface Region ◽

Cycling Performance ◽

Great Promise ◽

Energy Storage Devices ◽

Shuttle Effect ◽

Practical Applications ◽

Redox Kinetics ◽

Lithium Sulfur

Abstract Lithium-sulfur (Li-S) batteries with tremendous energy density possess great promise for the next-generation energy storage devices. Even though, the shuttle effect and sluggish redox kinetics of lithium polysulfides (LiPSs) seriously restrict practical applications of Li-S batteries. Herein, a three-dimensionally ordered macro/mesoporous TiN (3DOM TiN) nanostructure is established via using poly (methyl methacrylate) PMMA spheres as template. The interconnected macro/mesoporous channels are constructed to effectively alleviate the stacking of composite materials and render a large portion of inherent active sites exposed on the surface region. Moreover, TiN exhibits high electrical conductivity, which efficiently enhances charge transfer kinetics and guarantees the favorable electrochemical performance of sulfur cathode. More importantly, the as-prepared 3DOM TiN suppresses the shuttle effect and improves the redox kinetics significantly due to strong affinity toward LiPSs. Attributed to these unique features, the S/3DOM TiN electrode achieves an ultrahigh initial discharge capacity of 1187 mAh g-1 at 0.2 C, and stable cycling performance of 552 mAh g-1 over 500 cycles at 1 C. Meanwhile, the discharge capacity retention of 701 mAh g-1 (3.5 mAh cm-2) can be endowed for the S/3DOM TiN electrode under high sulfur loading of 5 mg cm-2 after 100 cycles at 0.1 C. Therefore, the 3DOM TiN nanostructure electrocatalyst provides a promising path for developing practically useable Li-S batteries.

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A Robust PVDF-Assisted Composite Membrane for Tetracycline Degradation in Emulsion and Oil-Water Separation

Nanomaterials ◽

10.3390/nano11123201 ◽

2021 ◽

Vol 11 (12) ◽

pp. 3201

Author(s):

Huijun Li ◽

Xin Xu ◽

Jiwei Wang ◽

Xuefeng Han ◽

Zhouqing Xu

Keyword(s):

Graphene Oxide ◽

Glass Fiber ◽

Polyvinylidene Fluoride ◽

Large Scale ◽

Environmental Crisis ◽

Polluted Water ◽

Separation Performance ◽

Water Separation ◽

Oil Water Separation ◽

Oil Water

Tetracycline (TC) contamination in water has progressively exacerbated the environmental crisis. It is urgent to develop a feasible method to solve this pollution in water. However, polluted water often contains oil. This paper reported a glass fiber (FG)-assisted polyvinylidene fluoride (PVDF) hybrid membrane with dual functions: high TC degradation efficiency in emulsion and oil-water separation. It can meet the catalytic degradation of tetracycline in complex water. This membrane was decorated by coating the glass fiber with PVDF solution containing hydrophilic graphene oxide hybridized NH2-MIL-101(Fe) particles. Moreover, due to its strong mechanical strength enhanced by the glass fiber, it can be reused as TC degradation catalysts for dozens of times without cracking. Thanks to the hydrophobicity of PVDF and the surface pore size of MOFs, the prepared membrane showed a good oil-water separation performance. Besides, the hydrophilic graphene oxide (GO) and NH2-MIL-101(Fe) improved the membrane’s anti-fouling performance, allowing it to be reused as the separation membrane. Therefore, the outstanding stability and recoverability of the membrane make it as a fantastic candidate material for large-scale removal of TC as well as oil-water separation application.

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A composite of CoNiP quantum dots decorating reduced graphene oxide as a sulfur host for Li-S batteries

Journal of Materials Chemistry A ◽

10.1039/d1ta03608d ◽

2021 ◽

Author(s):

Tingjiao Xiao ◽

Fengjin Yi ◽

Mingzhi Yang ◽

Weiliang Liu ◽

Mei Li ◽

...

Keyword(s):

Quantum Dots ◽

Graphene Oxide ◽

Reduced Graphene Oxide ◽

Rate Capability ◽

Cycling Performance ◽

Practical Application ◽

Shuttle Effect ◽

Reduced Graphene ◽

Sulfur Host ◽

Kinetics Of

The “shuttle effect” and sluggish reaction kinetics of lithium polysulfides lead to inferior cycling performance and rate capability of Li-S batteries, which hurdles their practical application. Herein, a composite of...

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Novel melamine-based porous organic polymers: synthesis, characterizations, morphology modifications, and their applications in lithium-sulfur batteries

Nanotechnology ◽

10.1088/1361-6528/ac39c9 ◽

2021 ◽

Author(s):

Haiyang Liu ◽

Jiaxing Wang ◽

Miao SUN ◽

Yu Wang ◽

Runing Zhao ◽

...

Keyword(s):

High Performance ◽

Rational Design ◽

Specific Capacity ◽

High Capacity ◽

Lithium Ion ◽

Organic Polymer ◽

Energy Storage Devices ◽

Shuttle Effect ◽

Physical Constraints ◽

Lithium Sulfur

Abstract Lithium-sulfur (Li-S) batteries have been considered to be one of the most promising energy storage devices in the next generation. However, the insulating properties of sulfur and the shuttle effect of soluble lithium polysulfides (LiPSs) seriously hinder the practical application of Li-S batteries. In this paper, a novel porous organic polymer (HUT3) was prepared based on the polycondensation between melamine and 1,4-phenylene diisocyanate. The micro morphology of HUT3 was improved by in-situ growth on different mass fractions of rGO (5%, 10%, 15%), and the obtained HUT3-rGO composites were employed as sulfur carriers in Li-S batteries with promoted the sulfur loading ratio and lithium ion mobility. Attributed to the synergistic effect of the chemisorption of polar groups and the physical constraints of HUT3 structure, HUT3-rGO/S electrodes exhibits excellent capacity and cyclability performance. For instance, HUT3-10rGO/S electrode exhibits a high initial specific capacity of 950 mAh g-1 at 0.2 C and retains a high capacity of 707 mAh g-1 after 500 cycles at 1 C. This work emphasizes the importance of the rational design of the chemical structure and opens up a simple way for the development of cathode materials suitable for high-performance Li-S batteries.

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Graphene Oxide Interlayered in binder-free Sulfur Vapor Deposited Cathode for Lithium-Sulfur Battery

Journal of Physics D Applied Physics ◽

10.1088/1361-6463/ac4b55 ◽

2022 ◽

Author(s):

Mahdieh Hakimi ◽

Zeinab Sanaee ◽

Shahnaz Ghasemi ◽

Shamsoddin Mohajerzadeh

Keyword(s):

Graphene Oxide ◽

Coulombic Efficiency ◽

Morphological Characteristics ◽

Deposition Process ◽

Sulfur Cathode ◽

Shuttle Effect ◽

Binder Free ◽

The One ◽

Sulfur Battery ◽

Lithium Sulfur

Abstract The main drawback of Lithium-Sulfur (Li-S) batteries which leads to a short lifetime, is the shuttle effect during the battery operation. One of the solutions to mitigate the shuttle effect is the utilization of interlayers. Herein, graphene oxide (GO) paper as an interlayer has been implemented between the sulfur cathode fabricated by the vapor deposition process as a binder-free electrode and a separator in a Li-S battery in order to gain a sufficient capacity. The morphological characteristics and electrochemical performance of the fabricated electrode have been investigated. The fabricated battery demonstrates an initial discharge capacity of 1265.46 mAh g-1 at the current density of 100 mA g-1. The coulombic efficiency is obtained to be 88.49% after 40 cycles. The remained capacity for the battery is 44.70% after several cycles at different current densities. The existence of the GO interlayer improves the electrochemical properties of the battery compared to the one with a pure sulfur cathode. The obtained results indicate that after 40 cycles, the capacity retention is 2.1 times more than that of the battery without the GO implementation.

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A separator modified by spray-dried hollow spherical cerium oxide and its application in lithium sulfur batteries

RSC Advances ◽

10.1039/c6ra23582d ◽

2016 ◽

Vol 6 (116) ◽

pp. 114989-114996 ◽

Cited By ~ 12

Author(s):

Xinye Qian ◽

Di Zhao ◽

Lina Jin ◽

Shanshan Yao ◽

Dewei Rao ◽

...

Keyword(s):

Cerium Oxide ◽

Large Scale ◽

Redox Process ◽

Shuttle Effect ◽

Lithium Sulfur Batteries ◽

Spray Dried ◽

Lithium Sulfur

Large-scale application of lithium sulfur batteries (LSBs) has been hindered by certain intrinsic obstacles, particularly the shuttle effect of lithium polysulfides (LiPSs) generated during the redox process.

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MXene-Derived Defect-Rich TiO2@rGO as High-Rate Anodes for Full Na Ion Batteries and Capacitors

Nano-Micro Letters ◽

10.1007/s40820-020-00471-9 ◽

2020 ◽

Vol 12 (1) ◽

Cited By ~ 7

Author(s):

Yongzheng Fang ◽

Yingying Zhang ◽

Chenxu Miao ◽

Kai Zhu ◽

Yong Chen ◽

...

Keyword(s):

Graphene Oxide ◽

Electrode Materials ◽

Low Cost ◽

Parent Phase ◽

High Capacity ◽

Cycling Performance ◽

Maximum Energy ◽

Sodium Ion ◽

High Rate ◽

Energy Storage Devices

AbstractSodium ion batteries and capacitors have demonstrated their potential applications for next-generation low-cost energy storage devices. These devices's rate ability is determined by the fast sodium ion storage behavior in electrode materials. Herein, a defective TiO2@reduced graphene oxide (M-TiO2@rGO) self-supporting foam electrode is constructed via a facile MXene decomposition and graphene oxide self-assembling process. The employment of the MXene parent phase exhibits distinctive advantages, enabling defect engineering, nanoengineering, and fluorine-doped metal oxides. As a result, the M-TiO2@rGO electrode shows a pseudocapacitance-dominated hybrid sodium storage mechanism. The pseudocapacitance-dominated process leads to high capacity, remarkable rate ability, and superior cycling performance. Significantly, an M-TiO2@rGO//Na3V2(PO4)3 sodium full cell and an M-TiO2@rGO//HPAC sodium ion capacitor are fabricated to demonstrate the promising application of M-TiO2@rGO. The sodium ion battery presents a capacity of 177.1 mAh g−1 at 500 mA g−1 and capacity retention of 74% after 200 cycles. The sodium ion capacitor delivers a maximum energy density of 101.2 Wh kg−1 and a maximum power density of 10,103.7 W kg−1. At 1.0 A g−1, it displays an energy retention of 84.7% after 10,000 cycles.

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Synthesis of carbon nanoflake/sulfur arrays as cathode materials of lithium-sulfur batteries

Functional Materials Letters ◽

10.1142/s1793604718400015 ◽

2018 ◽

Vol 11 (06) ◽

pp. 1840001 ◽

Cited By ~ 5

Author(s):

Fan Wang ◽

Xinqi Liang ◽

Minghua Chen ◽

Xinhui Xia

Keyword(s):

Cathode Materials ◽

Cycling Performance ◽

High Rate ◽

Synthetic Method ◽

Sulfur Cathode ◽

Dual Roles ◽

High Quality ◽

Shuttle Effect ◽

Lithium Sulfur Batteries ◽

Lithium Sulfur

It is of great importance to develop high-quality carbon/sulfur cathode for lithium-sulfur batteries (LSBs). Herein, we report a facile strategy to embed sulfur into interconnected carbon nanoflake matrix forming integrated electrode. Interlinked carbon nanoflakes have dual roles not only as a highly conductive matrix to host sulfur, but also act as blocking barriers to suppress the shuttle effect of intermediate polysulfides. In the light of these positive characteristics, the obtained carbon nanoflake/S cathode exhibit good LSBs performances with high capacities (1117[Formula: see text]mAh[Formula: see text]g[Formula: see text] at 0.2[Formula: see text]C, and 741[Formula: see text]mAh[Formula: see text]g[Formula: see text] at 0.6[Formula: see text]C) and good high-rate cycling performance. Our synthetic method provides a novel way to construct enhanced carbon/sulfur cathode for LSBs.

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