MOLECULES
·
2024
·Vol. 29
·期 18
·4452
·
IF 4.2
Xuehan Wang,Kaiqi Zhang,Huilin Shen,Hao Zhang,Hongyan Yao,Zheng Chen,Zhenhua Jiang
Solid-state electrolytes (SSEs), particularly garnet-type Li6.4La3Zr1.4Ta0.6O12(LLZTO), offer high stability and a wide electrochemical window. However, their grain boundaries limit ionic conductivity, necessitating high-temperature sintering for improved performance. Yet, this process results in brittle electrolytes prone to fracture during manufacturing. To address these difficulties, solvent-free solid-state electrolytes with a polyacrylonitrile (PAN) coating on LLZTO particles are reported in this work. Most notably, the PAN-coated LLZTO (PAN@LLZTO) electrolyte demonstrates self-supporting characteristics, eliminating the need for high-temperature sintering. Importantly, the homogeneous polymeric PAN coating, synthesized via the described method, facilitates efficient Li+transport between LLZTO particles. This electrolyte not only achieves an ionic conductivity of up to 2.11 × 10−3S cm−1but also exhibits excellent interfacial compatibility with lithium. Furthermore, a lithium metal battery incorporating 3% PAN@LLZTO-3%PTFE as the solid-state electrolyte and LiFePO4as the cathode demonstrates a remarkable specific discharge capacity of 169 mAh g−1at 0.1 °C. The strategy of organic polymer-coated LLZTO provides the possibility of a green manufacturing process for preparing room-temperature sinter-free solid-state electrolytes, which shows significant cost-effectiveness.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 8
·3153-3162
·
IF 8.067
Zeyu Zhang,Xiaoyong Chen,Guocheng Fang,Jiajie Wu,Aolong Gao
In biosensing and biophotonics, red/near-infrared fluorescent carbon dots (R-CDs) are attractive and deserve more attention. However, the synthesis and purification of R-CDs are time-consuming, impeding their industrial production and application on a large scale. We proposed a solvent-free method for reducing the number of raw materials used in the R-CD synthesis by utilizing the dehydration self-carbonation effect of the-HSO3 group in the precursor. The synthesized R-CDs exhibit a quantum yield of 59% and an emission wavelength of 600–800 nm with only one raw material (3,4-diaminobenzenesulfonic acid) and without the addition of any extra precursors, solvents, catalysts, dehydration agent, or other additives. We hypothesized that the red/near-infrared emission was caused by carbon-nucleus conjugated structures formed during the dissociation of the –HSO3 group at high temperatures. Additionally, the prepared R-CDs demonstrated a good response to the products of glucose oxidation, indicating glucose's sensing capability. Additionally, the synthesized R-CDs demonstrated excellent single-photon imaging of cells while being non-toxic, demonstrating their enormous potential in biophotonics. We believe that this simple and environmentally friendly R-CD synthesis can significantly accelerate industrialization and application.
研究领域:
材料科学
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生物传感
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生物光子学
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED POWDER TECHNOLOGY
·
2022
·
IF 4.969
Zihan Zhou,Xingwen Wang,Rui Yu,Rongli Jiang,Yu Gao,Xueshuai Chen,Huilin Hou
In this paper, b-axis oriented ZSM-5 zeolite was synthesized by solvent-free method with ammonia as growth regulator. Zeolites were characterized by modern detection techniques such as XRD, SEM, BET and NH 3 -TPD. The results showed that ammonia could not only promote the crystallization of ZSM-5 zeolite, but also direct the synthesis of ZSM-5 zeolite with b-axis oriented morphology, which was beneficial to enhance the selectivity of light olefins. B-axis oriented ZSM-5 zeolite did not need to be mixed and aged in aqueous solution, which could reduce the discharge of sewage, and avoided the generation of autogenic pressure in the crystallization process. Furthermore, it is consistent with the concept of environmental friendliness, which could guide the green preparation of industrial ZSM-5 zeolites.
研究领域:
材料科学
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催化化学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Junyan Tang,Dehua Wang,Wen Qin,Siyu Fang,Ting Xu,Jiming Huang,Mi Tang,Zhengbang Wang
Nanofiller/polymer composite electrolytes have been regarded as promising candidates for all-solid-state lithium-metal batteries. However, well-dispersion of nanofillers in polymer composite electrolytes is still a great challenge. Herein, we report an in-situ solvent-free processable method to the MOF/polymer composite electrolyte with highly dispersed and defected MOF nanoparticles. The high MOF dispersion without aggregation not only suggests the uniform composite structure with high utilization of MOF nanofillers but also induces the formation of continuous and uniform Li + transport paths. The defected MOF structure is favorable to adsorb anions and promote Li + transportation. As a result, Such MOF/polymer electrolyte demonstrates enhanced electrochemical performance and the assembled LiFePO 4 /Li full cells also exhibit both the excellent rate capability and cycling stability. This study proposes a simplified and efficient methodology for the highly dispersed MOF/polymer composite electrolytes for high performance solid-state batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Nature Communications
·
2021
·Vol. 12
·期 1
·1-10
·
IF 14.919
Wu Xueke,Wang Zuochao,Zhang Dan,Qin Yingnan,Wang Minghui,Han Yi,Zhan Tianrong,Yang Bo,Li Shaoxiang,Lai Jianping,Wang Lei
Exploring a simple, fast, solvent-free synthetic method for large-scale preparation of cheap, highly active electrocatalysts for industrial hydrogen evolution reaction is one of the most promising work today. In this work, a simple, fast and solvent-free microwave pyrolysis method is used to synthesize ultra-small (3.5 nm) Ru-Mo 2 C@CNT catalyst with heterogeneous structure and strong metal-support interaction in one step. The Ru-Mo 2 C@CNT catalyst only exhibits an overpotential of 15 mV at a current density of 10 mA cm −2 , and exhibits a large turnover frequency value up to 21.9 s −1 under an overpotential of 100 mV in 1.0 M KOH. In addition, this catalyst can reach high current densities of 500 mA cm −2 and 1000 mA cm −2 at low overpotentials of 56 mV and 78 mV respectively, and it displays high stability of 1000 h. This work provides a feasible way for the reasonable design of other large-scale production catalysts.
研究领域:
材料科学
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电催化
·
能源化学
✓ 已验证
DOI
PubMed
高影响因子
FIBERS AND POLYMERS
·
2023
·Vol. 24
·期 6
·1903-1917
·
IF 2.5
Tian Qianjun,Huang Zhichao,Wang Lin,Shi Lei,Shen Liangen,Qi Dongming
Self-healing polyurethane materials with excellent mechanical properties have a wide range of applications, including textiles, clothing, leather, and flexible electronics. However, determining methods to obtain this material in green and environment-friendly ways is an interesting and challenging task. In this study, a series of self-healing polyurethane materials with soft segments containing diselenide bonds and hard segments including multiple hydrogen bonds were prepared using a solvent-free method. The characterization results demonstrated that the T–Se–SFPU–2 sample exhibited both favorable self-healing function as well as mechanical properties with a tensile breaking strength of 6.15 MPa, and the greatest healing effect was achieved after 6 h at room temperature under visible light. The research results further demonstrated that the hydrogen bond in the hard segment can considerably improve the mechanical properties of polyurethane. The best micro-phase separation was achieved by controlling the hydrogen bond content in the hard segment, achieving a force balance between the soft and hard segments, and finally, the optimal balance between the self-healing performance and mechanical strength of polyurethane was achieved. These results provide a new strategy for preparing polymers with different self-healing capabilities.
研究领域:
材料科学
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高分子化学
·
绿色化学
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机械工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Zhuangzhuang Gao,Baoju Li,Zhan Li,Tongwen Yu,Shuchang Wang,Qianrong Fang,Shilun Qiu,Ming Xue
Metal–organic frameworks (MOFs) are promising candidates for the advanced membrane materials based on their diverse structures, modifiable pore environment, precise pore sizes, etc. Nevertheless, the use of supports and large amounts of solvents in traditional solvothermal synthesis of MOF membranes is considered inefficient, costly, and environmentally problematic, coupled with challenges in their scalable manufacturing. In this work, we report a solvent-free space-confined conversion (SFSC) approach for the fabrication of a series of free-standing MOF (ZIF-8, Zn(EtIm)2, and Zn2(BIm)4) membranes. This approach excludes the employment of solvents and supports that require tedious pretreatment and, thus, makes the process more environment-friendly and highly efficient. The free-standing membranes feature a robust and unique architecture, which comprise dense surface layers and highly porous interlayer with large amounts of irregular-shaped micron-scale pore cavities, inducing satisfactory H2/CO2 selectivities and exceptional H2 permeances. The ZIF-8 membrane affords a considerable H2 permeance of 2653.7 GPU with a competitive H2/CO2 selectivity of 17.1, and the Zn(EtIm)2 membrane exhibits a high H2/CO2 selectivity of 22.1 with an excellent H2 permeance (6268.7 GPU). The SFSC approach potentially provides a new pathway for preparing free-standing MOF membranes under solvent-free conditions, rendering it feasible for scale-up production of membrane materials for gas separation.
研究领域:
材料科学
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化学工程
·
纳米材料
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气体分离
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环境友好合成
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膜技术
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多孔材料化学
✓ 已验证
DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Wenlin Zhang,Jiahua Meng,Yongjin Zou,Chuanguo Ma,Yuqi Liu
Simultaneously achieving high performance and green benzoxazine resins is challenging yet highly significant. In this work, a bifunctional benzoxazine monomer, HT-fa, was successfully synthesized using a green strategy with hydroxytyrosol as the phenol source and furylamine as the amine source, and the monomer demonstrated excellent processability. Cured HT-fa resin, poly(HT-fa), exhibited a high glass transition temperature (Tg) of 297 °C and an initial decomposition temperature (Tdi) of 354 °C. Additionally, it demonstrated exceptional flame retardancy, with a limiting oxygen index (LOI) of 44.1%, a heat release capacity (HRC) of 21.3 J/g·K, a total heat release (THR) value of 2.9 kJ/g, and a flame-retardant rating of UL-94 V-0. Notably, its LOI, HRC, and THR were superior to those of all benzoxazines synthesized using biomass-derived amine and phenolic sources and a solvent-free method. The excellent properties of HT-fa and poly(HT-fa) are due to their unique rigid-flexible molecular structures. In addition, HT-fa can be used as a modifier for the commercially available bisphenol A/aniline based benzoxazine (BA-a). The addition of HT-fa not only significantly reduces the curing temperature of BA-a but also enhances the heat-resistance and flame-retardant properties of the cured resins. Poly(HT-fa) and these copolymers have potential applications in the field of halogen- and phosphorus-free flame-retardant materials.
研究领域:
高分子科学
·
材料工程
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绿色化学
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热分析
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消防安全工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Dechao Zhang,Xijun Xu,Shaomin Ji,Zhuosen Wang,Zhengbo Liu,Jiadong Shen,Renzong Hu,Jun Liu,Min Zhu
Solid polymer electrolytes (SPEs) with the advantages of high safety, low volatility, and the ability to suppress Li dendrites are highly desirable to be used in next generation high-safety and high-energy lithium-ion batteries. The exploration of SPEs with superior comprehensive properties has received extensive attention for high-performance all-solid-state batteries (ASSBs). Herein, a sandwich-like nanofibrous membrane-reinforced poly-caprolaclone diol and trimethyl phosphate (TMP) composite polymer electrolyte (CPE) has been designed by a facile “solvent-free” solution-casting method. Specifically, the flame-retardant TMP is employed as a plasticizer, which can improve the ionic conductivity effectively. The as-prepared solid electrolyte exhibits superior comprehensive performance in terms of high ionic conductivity, wide electrochemical window, good compatibility with lithium metal, and superior thermal stability. Furthermore, the assembled Li//LiFePO4 ASSBs with this solid CPE show outstanding cycling stability and high average discharge capacity at room temperature (30 °C). Undoubtedly, our study provides a new facile method and a qualified solid electrolyte material for next generation high-performance ASSBs.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）