Advances in Applied Ceramics
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2016
·
IF 1.162
X. J. Zeng,W. L. Liu
B4C green tapes are prepared by aqueous tape casting and a spark plasma sintering (SPS) process using polyethylenimine (PEI) as dispersant, hydroxypropyl methyl cellulose (HPMC) as binder and polyethylene glycol (PEG) as plasticiser. The influences of solid content, dispersant content, mass ratio of plasticiser to binder (R value) and milling time on the slurry viscosity are studied. The samples are characterised by means of hardness tester, universal testing machine and scanning electron microscopy. The results indicate that the solid content of B4C slurry achieves 47.5 wt-% with milling time of 12 h when the content of PEI, HPMC and PEG is 1.5, 5 and 5 wt-%, respectively. The relative density of B4C ceramics subject to SPS at 1600°C and 50 MPa for 8 min is up to 97.2%. The Vickers hardness, flexural strength and fracture toughness of B4C ceramics reach 36.5 ± 0.7 GPa, 510.3 ± 19.4 MPa and 5.04 ± 0.29 MPa m−1/2, respectively.
研究领域:
材料科学
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陶瓷工程
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产品关联
DOI
高影响因子
Small
·
2022
·Vol. 18
·期 28
·2202651
·
IF 15.153
Shuanglin Wu,Yingmei Yao,Xiaolin Nie,Zhifeng Yu,Yanting Yu,Fenglin Huang
Exploring a scalable strategy to fabricate a multifunctional separator is of great significance to overcome the challenges of lithium polysulfides (LiPSs) and dendritic growth in lithium-sulfur batteries (LSBs). Herein, a binder-free Janus separator is constructed by interfacial engineering. At the cathode interface, an ultra-thin covalent triazine piperazine film containing tailorable micropores and adsorption sites is decorated on polyacrylonitrile (PAN) membrane by in situ interfacial polymerization, building a triple barrier for LiPSs. The combination of steric hindrance and chemical adsorption reduces LiPS's migration by 81.85%. Meanwhile, at the anode interface, a fast-ionic conductor Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO) is created on the surface of PAN nanofiber by magnetron sputtering to suppress dendrite growth. Even though there is no binder between the ceramic layer and the fibrous separator, sputtering creates an inter-embedded structure that ensures no depowering after cycling. Furthermore, the PAN-based separator displays a high temperature tolerance of 180 °C. Consequently, the cell delivers a high capacity of 1287.9 mAh g −1 at 0.5 C and stable cycling performance with an ultra-low capacity decay rate of 0.059% per cycle over 500 cycles. This work provides a scalable strategy for functionalizing separators to tackle the challenges in LSBs, which is binder-free, stripping-free, and essentially thickening-free.
研究领域:
材料科学
·
能源存储技术
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产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Xiaojing Wu,Rui Zhang,Hanbing Wang,Xujing Sun,Ning Luo,Dongjiang You,Lingyu Du,Yunming Li,Litao Kang
Despite showing low cost, inherent safety, and high suitability, the rechargeable Zn–I2 aqueous batteries are still seriously suffering from self-discharge and energy density issues stemming from I2 dissolution, polyiodide shuttling, and low I2 mass loading. Herein, we develop a novel polyquaternium-10 (P10, a cationic cellulose)-based binding system to simultaneously circumvent these issues. The water-borne P10 binder can suppress I2 dissolution and polyiodide shuttling by not only adsorbing polyiodides via its quaternary ammonium groups and oxygen heteroatoms but also eliminating the use of toxic, expensive, and I2-dissolving organic solvents (e.g., N-methylpyrrolidone, NMP), enabling a facile and green cathode-fabricating process. More importantly, the P10 binder is conducive to the preparation of thick cathode coatings with high I2 mass loadings, thanks to its high elasticity and mechanical toughness after swelling by the electrolyte. As a result, Zn–I2 batteries prepared with the P10 binder demonstrate much better anti-self-discharge performance than those prepared with conventional PVDF binders (capacity retention: 84 vs 63% after 200 h of open-circuit storage). Even at an ultrahigh I2 mass loading of 14.5 mg cm–2, the batteries can still deliver significant specific capacity (216 mAh g–1) and cyclability (96.8% capacity remained after 385 cycles). This binder should be highly compatible with other performance-improving strategies, providing a green yet affordable approach for the construction of high-performance Zn–I2 aqueous batteries.
研究领域:
电化学
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材料科学
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能源存储
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产品关联
DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2024
·
IF 2.6
Chen Wang,Li Wenxin,Jiang Jiahao,Yao Changyu,Li Li,Gao Hanyang
Silicon nanomaterials have received much attention due to their ability to adapt to large volume changes and thus avoid fragmentation. Studies have shown that two-dimensional flaky silicon particles (F–Si) have better mechanical stability than spherical silicon particles (S–Si), but the larger specific surface area of flaky silicon highlights the problem of chemical stability. A suitable binder can stabilize the surface of the silicon particles through interaction with the silicon particles. This work is a comparative study of various binder systems for S–Si and F–Si: sodium carboxymethyl cellulose (CMC), polyacrylic acid (PAA), and sodium alginate (SA). The relationships between the rheological properties of the electrode slurry, the functional group states of the silicon particles and electrode coatings, the state of the dried electrode surface, and the type of binder were investigated. The experimental analysis shows that CMC and SA as rigid binders exhibit better cycling performance in S–Si/F–Si electrodes due to their better dispersion states. The dispersion of S–Si electrodes with higher silanol (Si–OH) content is dominantly influenced by electrostatic repulsion, and that of F–Si electrodes with lower Si–OH content is dominantly influenced by bridging. The experimental analysis demonstrates that CMC and SA as rigid binders exhibit better cycling performance in S–Si/F–Si electrodes, respectively, due to their better dispersion states. The dispersion of S–Si electrodes with higher silanol Si–OH content is dominantly influenced by electrostatic repulsion, and that of F–Si electrodes with lower Si–OH content is dominantly influenced by bridging.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
MATERIALS SCIENCE FORUM
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2016
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IF 0
Wei Liang Liu,Min Wu,Zhong Tao Shi,Zhao Liang Xu,Jie Ping Ruan
B4C ceramic tapes were prepared by aqueous tape-casting with boron carbide powders as starting material, deionized water as solvent, polymine (PEI) as dispersant, polyethylene glycol (PEG) as plasticizer, poval (PVA) or gelatin as binders. The influences of pH, dispersant content, kind and content of binder on the stability and rheological property of tape slurries were studied. The experimental results indicated that, when the pH was ranged in 3-4, the slurries with good stability and good rheology could be obtained with 0.8 wt% PEI, 4.0 wt% PVA or 6.5 wt% gelatin. PVA as binder made cast tape with certain strength, and gelatin as binder made cast tape with poor strength.
研究领域:
材料科学
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陶瓷工程
✓ 已验证
DOI
CARBON
·
2023
·
IF 10.9
Xinrui Ding,Xiaolin Xu,Zihan He,Yifu Liang,Xiaohua Wu,Zongtao Li
Activated carbon is one of the most widely used electrode materials for supercapacitors owing to its excellent porosity, large specific surface area and long cycle life. However, its utilization in electrode fabrication necessitates the incorporation of insulating binders to facilitate shaping due to its powdery nature. This may obstruct the pores and increase the internal resistance of the electrode, resulting in poor flexibility and electrochemical performance. To address this problem, an innovative and universal packaging strategy is proposed, in which composite films are prepared by double vacuum filtration, coated with gel electrolyte and then patterned by selective laser carving based on the principle of “Selective Optical Transmittance”, to achieve the fabrication of binder-free and substrate-free all-carbon-based micro-supercapacitors. The areal capacitance of obtained Activated Carbon/Super P-Reduced Graphene Oxide Micro-supercapacitors (AC/SP-rGO MSCs) without binder are three times higher than those with binder. The prepared AC/SP-rGO MSCs exhibit remarkable areal capacitance of 177.32 mF cm −2 , volumetric capacitance of 52.15 F cm −3 and high energy density of 4.44 mWh cm −3 . Meanwhile, they also exhibit excellent flexibility with no capacitance degradation after 5000 bending cycles. Specifically, the energy provided by four AC/SP-rGO MSCs connected in series can light up to 46 red LEDs or provide a thermo-hygrometer with a long endurance of over 45 min. This packaging method has proven to be an effective strategy for the fabrication of powdery materials into binder-free electrodes, presenting a unique idea for the fabrication of electrodes within the realm of flexible electronics.
研究领域:
材料科学
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能源存储
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DOI
高影响因子
ENERGY & FUELS
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2020
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IF 3.421
Yonghou Xiao,Qiangqiang Xue,Kerun Zhu,Gaohong He
High-efficiency adsorbents are essential for ultradeep desulfurization through selective adsorption, which features low energy consumption without causing secondary pollution. Aluminum oxide is always added as a binder to form physically bound pellets, which weakens the adsorptive desulfurization performance. In this work, a novel micro–mesoporous binderless ZSM-5 (BL-ZSM-5) was successfully prepared through in situ crystallization, which could efficiently remove thiophene from model fuel. Desulfurization ability was investigated by static and fixed bed adsorption. The breakthrough adsorption capacity of thiophene on BL-ZSM-5 reaches 0.38 mg/g, which is twice as high as that of ZSM-5 with alumina binders (Al-ZSM-5). The improvement is attributed to the conversion of alumina into molecular sieves, which could increase the adsorption sites and provide appropriate mesoporous channels for thiophene transfer. The thermal stability of BL-ZSM-5 is superior to that of Al-ZSM-5. The adsorption performance of BL-ZSM-5 is maintained well after 6 cycles of regeneration. The results demonstrate that the attractive prospect of BL-ZSM-5 in highly efficient desulfurization of transport fuels through selective adsorption.
研究领域:
化学工程
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环境科学
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DOI
高影响因子
Scientific Reports
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2015
·Vol. 5
·期 1
·1-6
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IF 5.578
Xiong Xiaoqin,Luo Wei,Hu Xianluo,Chen Chaoji,Qie Long,Hou Dongfang,Huang Yunhui
A flexible membrane consisting of MoS 2 /carbon nanofibers has been fabricated by a simple electrospinning method. MoS 2 nanosheets are uniformly encapsulated in the inter-connected carbon nanofibers with diameters of ~150 nm. When evaluated as a binder-free electrode for sodium-ion batteries, the as-obtained electrode demonstrates high performances, including high reversible capacity of 381.7 mA h g −1 at 100 mA g −1 and superior rate capability (283.3, 246.5 and 186.3 mA h g −1 at 0.5, 1 and 2 A g −1 , respectively). Most importantly, the binder-free electrode made of MoS 2 and carbon nanofibers can still deliver a charge capacity of 283.9 mA h g −1 after 600 cycles at a current density of 100 m A g −1 , indicating a very promising anode for long-life SIBs.
研究领域:
材料科学
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能源存储
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纳米技术
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产品关联
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2024
·
IF 5.4
Leshuai Qiao,Yang Chen,Xuanxuan Zhang,Xiangxin Cheng,Wanfu Liang,Yuyu Li,Jingchao Chai,Ming Xie,Dianbo Ruan,Zhihong Liu
Water-based binders in lithium-ion batteries have garnered increasing attention owing to their environmental benignity and cost effectiveness. In this research, a waterborne poly(lithium acrylate-co-acrylonitrile) copolymer, P(LiAA-AN), was prepared and utilized as a high-performance binder for 4.5 V LiCoO2 in a lithium-ion battery. This copolymer binder integrates characteristics of both polyacrylic lithium and polyacrylonitrile. It has the ability to compensate for additional Li ions and engage in the formation of a stable cathode solid electrolyte interface (CEI) on the surface of 4.5 V LiCoO2. Consequently, in comparison with poly(vinylidene fluoride) (PVDF) and LiPAA binders, the water-based P(LiAA-AN) binder leads the 4.5 V LCO/Li battery to superior rate performance and high cycle stability. When the cell was cycled under a current density of 0.5 C (1 C = 185 mAh g–1) and a cutoff voltage of 3.0–4.5 V (vs Li+/Li), a high capacity retention ratio of 91.5% was achieved after 200 cycles. In addition, the P(LiAA-AN) binder demonstrates an excellent electrolyte absorption and a reduced charge transfer impedance. These results substantiate the effectiveness of the P(LiAA-AN) water-based binder in enhancing the electrochemical performance of the high-voltage LiCoO2 cathode.
研究领域:
材料科学
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电化学
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能源存储
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产品关联
DOI
高影响因子
Energy Storage Materials
·
2021
·
IF 17.789
Yong Wang,Hui Xu,Xi Chen,Hong Jin,Jiping Wang
Binders play an important role in preserving the mechanical stability of electrodes. Nevertheless, the typical binders normally are not stretchable to withstand a repeated large volume change, which are not suitable for high-loading silicon anodes. Herein, inspired by the natural parthenocissus, an elastic self-healing CA-PAA binder is designed for silicon anode to implement long-terms stable cycling. The multiple hydrogen bonds formed by in-situ cross-linking of water soluble citric acid (CA) and poly (acrylic acid) (PAA) can establish a reversible network for silicon particles. The CA molecule not only serves as the protecting buffer layer to release the inner stress and stabilize the solid electrolyte interface (SEI), but it can also connect with PAA to form a “inner flexibility and outer rigidity” spatial topology. Consequently, this self-healing binder enhanced silicon anode exhibits an excellent performance on accommodating the large volume change during cycling process. As expected, the silicon anode shows an impressive initial areal capacity of 6.5 mAh cm −2 , 78% capacity retention after 50 cycles with a high mass loading of 1.8 mg cm −2 , and an initial Coulombic efficiency of 89.5%. Meanwhile, the Si||NCM 811 full cell shows 74% capacity retention after 100 cycles with a reversible capacity of 1.7 mAh cm −2 .
研究领域:
材料科学
·
能源存储技术
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
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IF 8.6
Zheng Zhang,Jinfeng Zhang,Zhihua Zhang,Xiao Du,Xiaogang Hao,Xiaowei An,Guoqing Guan,Jun Li,Zhong Liu
A novel physically blended polyvinylidene fluoride (PVDF) and polyacrylic acid (PAA) composite binder enhanced LiMn 2 O 4 /C (carbon black) film based electrode was successfully fabricated, and applied in an electrochemically switched ion exchange (ESIX) process for selective extraction of Li + from high Mg/Li ratio brine. The multifunctional composite binder system enabled the obtained LiMn 2 O 4 /C/PVDF- b -PAA film coated electrode to exhibit superior mechanical, hydrophilic and electrochemical properties compared with the LiMn 2 O 4 /C/PVDF film coated electrode. Based on the density functional theory (DFT) calculations, the ion exchange interaction between H + of –COOH groups in PAA and Li + facilitated the transport of Li + at the electrode interface, which enhanced lithium extraction performance of the film coated electrode. For treating the simulated brine (Mg/Li: ∼500), the intercalation capacity of Li + was about 15.1 mg g −1 , and the total extraction efficiency of lithium reached up to 62.8% after two electrochemical intercalation tests. Moreover, the film coated electrode displayed excellent selectivity towards Li + ions even in pre-treated actual brine (Mg/Li: ∼292.2). The Mg/Li mass ratio in the recovery solution could decrease to 0.46, and the calculated Li + /Mg 2+ separation coefficient reached as high as 631.08. In particular, the highly stable and scalable electroactive film could be prepared effectively, thus increasing its applicability. It is expected that such a LiMn 2 O 4 /C/PVDF- b -PAA film coated electrode could be a promising candidate for the selective extraction of Li + from high Mg/Li mass ratio brines.
研究领域:
材料科学
·
电化学工程
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DOI
高影响因子
CHINESE JOURNAL OF POLYMER SCIENCE
·
2025
·
IF 4
Peng Hao,Liu Lin,Zhang Qiao,Liu Shuhao,Lin Man,Li Hao,Deng Yonghong,Jiao Chuanlai,Wang Chaoyang,Xu Hongli
High-voltage LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) cathodes are critical for enhancing the energy density of lithium-ion batteries (LIBs). The development of binders compatible with high-voltage NCM811 cathode materials is crucial to enhance the electrochemical performance of LIBs. However, the traditional fluoropolymer binder, poly(vinylidene difluoride) (PVDF), can potentially leach components or break down into poly(fluoroalkyl substances) (PFAS) chemicals, thereby contributing to PFAS contamination. A novel fluorine-free polymer, polysulfone-polyamide-polyimide (SPIO), was designed and synthesized as a binder for NCM811 cathodes. The SPIO binder exhibits exceptional mechanical properties and superior electrochemical characteristics. The cathode film fabricated with SPIO demonstrated a remarkable delamination force of 8 N (390 N·m −1 ), indicating robust adhesion. The Li∥NCM811 cell incorporating the SPIO binder retained 80% of its initial capacity after 300 cycles at a current density of 0.2 C. In comparison, the control cells assembled with the PVDF binder retained only 52% of their capacities under the same cycling conditions. Furthermore, the SPIO binder exhibited improved compatibility with the electrolyte. Transmission electron microscopy analysis of the cathode films after 100 cycles revealed the formation of a uniform, dense, and continuous chemical-electrochemical interface (CEI) by the SPIO binder on the surface of the NCM811 particles, which significantly contributed to the enhancement of the electrochemical performance. These results highlight the potential of SPIO as an advanced binder material for high-performance lithium-ion batteries.
研究领域:
材料科学
·
能源技术
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）