Journal of Energy Chemistry
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2023
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IF 13.1
Qiang Lv,Yajie Song,Bo Wang,Shangjie Wang,Bochen Wu,Yutong Jing,Huaizheng Ren,Shengbo Yang,Lei Wang,Lihui Xiao,Dianlong Wang,Huakun Liu,Shixue Dou
Solid polymer electrolytes (SPEs) are one of the most promising alternatives to flammable liquid electrolytes for building safe Li metal batteries. Nevertheless, the poor ionic conductivity at room temperature (RT) and low resistance to Li dendrites seriously hinder the commercialization of SPEs. Herein, we design a bifunctional flame retardant SPE by combining hydroxyapatite (HAP) nanomaterials with N-methyl pyrrolidone (NMP) in the PVDF-HFP matrix. The addition of HAP generates a hydrogen bond network with the PVDF-HFP matrix and cooperates with NMP to facilitate the dissociation of LiTFSI in the PVDF-HFP matrix. Consequently, the prepared SPE demonstrates superior ionic conductivity at RT, excellent fireproof properties, and strong resistance to Li dendrites. The assembled Li symmetric cell with prepared SPE exhibits a stable cycling performance of over 1200 h at 0.2 mA cm −2 , and the solid-state LiFePO 4 ||Li cell shows excellent capacity retention of 85.3% over 600 cycles at 0.5 C.
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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DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2023
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IF 6.6
Ju Huang,Leting Yang,Wei Wang,Bin Yu,Chengfei Cao,Zhuyun Bi,Jue Wang,Jian Shen,Lei Song
Constructing fire-protective coatings has been to be an effective strategy for reducing fire hazards of polymeric materials. However, it remains a huge challenge to fabricate high-performance flame retardant coatings with biodegradability, excellent mechanical and thermal properties, as well as strong adhesion. Herein, inspired by snails exhibiting strong adhesion to a variety of surfaces by interfacial hydrogen-bonding, a biomimetic , highly adhesive, supramolecular nano-coating consisting of a tannic acid (TA)-functionalized hexagonal boron nitride nanosheets (TA-BNNS), TA and polyvinyl alcohol (PVA) was prepared by using a hydrogen-bond self-assembly strategy of solvent volatilization regulation. TA-BNNS was prepared via an efficient and green ball milling exfoliation method under mild conditions. Dynamically regulating the hydrogen bonds between PVA and TA molecules through the volatilization of ethanol was to achieve physical cross-linking. Then such a nanocoating was applied for surface treatment of rigid polyurethane foam (RPUF), which exhibiting excellent flame retardant properties. Compared to pure RPUF, the peak heat release rate (PHRR) and peak smoke production rate (PSPR) of the TA/PVA@BNNS coated RPUF were reduced by ~52.4 % and ~53.4 %, respectively. Therefore, this work provides new approach to the design and manufacture of green, efficient and non-toxic flame retardant materials.
研究领域:
材料科学
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化学工程
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纳米技术
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高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
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2023
·Vol. 34
·期 11
·3631-3643
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IF 3.4
Lei Li,Yishen Chen,Xuejun Lai,Hongqiang Li,Xingrong Zeng
Phosphorus-nitrogen intumescent flame retardant (IFR) is one of the most promising halogen-free flame retardants in enhancing the fire safety of polypropylene (PP), but its efficiency needs to be further improved. Herein, a novel single-component polyphosphazene IFR containing pentaerythritol caged phosphate (PEPA) functionalized titanium carbide nanosheet (MXene), named PZS-MXene, was prepared. When the amount of PZS-MXene was 25 wt%, PP/PZS-MXene classed a UL-94 V-0 rating with the limiting oxygen index of 32.7%. Compared with PP, its peak of heat release rate, total heat release rate and total smoke production rate were reduced by 74.5%, 33.0%, and 19.8%, respectively. The flame-retardant mechanism revealed that PZS-MXene quenched high-active free radicals to inhibit the degradation of PP during the combustion. MXene rapidly catalyzed the carbonization of PZS to form high-quality intumescent char layer on its surface. Besides, MXene acted as the supporting skeletons and exerted the layered barrier effect to improve the compactness of the intumescent char layer, thus effectively inhibited the degradation and combustion of PP. This work provided new insights for the efficient halogen-free flame-retardant PP.
研究领域:
材料科学
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阻燃材料
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高影响因子
DIAMOND AND RELATED MATERIALS
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2025
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IF 5.1
Yitong Guo,Chenxiao Wang,Xianju Shi,Yanhuan Chen,Lifang Wang,Yanan Liu,Yuqian Wang,Xiaoning Wang,Yukai Chang,Aiguo Zhou
In this paper, a green and efficient low-concentration ammonium fluoride etching strategy is developed for the synthesis of two-dimensional highly pure Mo 2 CT x MXene. Using the Mo 2 Ga 2 C MAX phase as the precursor, highly pure Mo 2 CT x MXene was prepared via hydrothermal etching with a 1 M NH 4 F aqueous solution at 160 °C for 12 h. By employing a slow-release fluorine source mechanism, the NH 4 F concentration was maintained at 1 M, significantly reducing toxicity risks and improving operational safety while providing a safe pathway for large-scale MXene production. The structural characterization of the material revealed that the as-prepared Mo 2 CT x MXene exhibits a typical two-dimensional layered structure, with microscopic morphology and crystal parameters consistent with those obtained by conventional etching methods. As an anode material for lithium-ion batteries, the Mo 2 CT x MXene delivered an initial discharge specific capacity of 873.5 mAh g −1 at a current density of 0.05 A g −1 , and retained 33.7 mAh g −1 after 100th cycles of high-rate cycling at 0.5 A g −1 . This represents the first application of a low-concentration NH 4 F etching system for preparing Mo 2 CT x MXene. The findings of this study not only enhance the safety of MXene synthesis but also provide new research directions for the development of green synthesis processes for Mo 2 CT x MXene.
研究领域:
材料科学
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纳米科技
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电化学
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能源存储
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无机非金属材料
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DOI
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
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2026
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IF 7.9
Ziyan Wang,Hetang Wang,Xiaolong Zhu,Xiaojuan Li,Panpan Yang,Yanshu Zhang
Traditional dust suppressants are typically chemical agents, which suffer from poor biodegradability and potential toxicity. This study evaluates the anionic dust suppressant sodium dodecyl benzene sulfonate (SDBS), the nonionic fatty alcohol polyoxyethylene ether-9 (AEO-9), and the biological rhamnolipid in terms of wettability, biodegradability, and acute toxicity. Wettability was assessed by measuring surface tension using a foam interfacial rheometer. Biodegradation was evaluated via foam fluctuation rates after shaking with activated sludge. Acute toxicity was assessed through intratracheal instillation in mice, with median lethal dose (LD50) calculated using Horn’s method, and lung tissues analyzed histopathologically via Hematoxylin and Eosin (HE) staining. The results demonstrated distinct differences in wettability, biodegradability, and acute toxicity among the dust suppressants. Wettability variations were reflected in equilibrium surface tension and critical micelle concentration (CMC). Biodegradation tests confirmed 100 % degradation for all agents, but with faster kinetics for rhamnolipid (26 h) than SDBS and AEO-9 (28 h). Acute toxicity, assessed via LD50 and histopathological analysis, revealed pulmonary toxic responses. This study proposes a comprehensive evaluation framework for dust suppressants, integrating wettability, biodegradability, toxicity, and histopathology. This framework proposes a systematic approach to differentiate environmental compatibility and biosafety, providing practical guidance for screening, optimization, and regulatory assessment in coal mining and related industries.
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高影响因子
ACS Applied Materials & Interfaces
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2019
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IF 8.456
Manni Li,Zhoujie Zhang,Yuting Yin,Weichang Guo,Yuge Bai,Fan Zhang,Bin Zhao,Fei Shen,Xiaogang Han
A porous polyimide (PI) membrane is successfully prepared via nonsolvent-induced phase separation with two porogens: dibutyl phthalate and glycerin. The as-prepared uniform porous PI membrane shows excellent separator properties for lithium-ion batteries (LIBs). Compared with the commercial polyethylene (PE) separator, the PI separator exhibits significant thermal stability, better ionic conductivity, and wettability both in carbonate and ether electrolytes for LIBs. The battery coin-cells assembled with the PI separator is more robust and still works even after heating at 140 °C for 1 h, while the cells with the commercial PE separator could not charge any more due to the shrinkage of the PE under the same condition.
研究领域:
材料科学
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储能技术
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高分子化学
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电化学
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DOI
高影响因子
Nature Communications
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2026
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IF 18.1
Chen Hao,Huang Jiawen,Peng Si-Hao,Liu Zhi-Hua,Zeng Zhi-Wei,Tang Pei-Jie,Liu Bo-Wen,Zeng Fu-Rong,Wang Yu-Zhong,Zhang Lin,Zhao Hai-Bo
Solid polymer electrolytes are important for lithium metal batteries, but their limited Li + transference efficiency hinders large-scale deployment. Here we report a Li⁺ shuttle bus strategy that immobilizes anions at one-dimensional charged interface, promotes lithium salt dissociation, and guides Li⁺ enrichment. The effect of Coulombic repulsion among densely coordinated Li⁺ species weakens solvation structure for Li + , achieving fast, collective and one-dimensional ion shuttling at the microscopic scale. Consequently, the designed solid polymer electrolyte exhibits a high ionic conductivity of 0.92 × 10 −3 S cm −1 at 28 °C. Li | |LiFePO 4 cells operate nearly 5000 cycles at 5 C and maintain 77% capacity after 900 cycles at −40 °C. Li | |LiNi 0.8 Co 0.1 Mn 0.1 O 2 pouch cell further realizes high specific energy (508 Wh kg −1 , 200 cycles, 95.2% retention). This work establishes a Li⁺ shuttle-bus strategy for constructing solid polymer electrolytes with fast-charging capability and wide-temperature adaptability, offering findings into the design of solid-state lithium metal batteries.
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Tong Liu,Jingtao Li,Zhihui Han,Xuening Ding,Zhaoxin Chen,Kexin Guo,Qile Miao,Guangbing Wan,Tianhe Jiang,Qi Li,Yajie Tian,Jieling Li,Anhe Wang,Sen Liang,Hong Li,Shuo Bai
Endoscopic submucosal dissection (ESD) is often challenged by rapid injectate diffusion and a lack of thermal monitoring, which increases perforation risks. Here, we developed a co-assembled supramolecular hydrogel (Fmoc-YL/Cy5) that integrates robust physical elevation with real-time fluorescence thermometry. Formed via non-covalent interactions between a peptide derivative and a near-infrared dye, the resulting nanofibrous network effectively suppresses aggregation-caused quenching (ACQ). The hydrogel exhibits excellent shear-thinning, instantaneous self-healing, and highly sensitive, reversible temperature responsiveness. Both in vitro and in vivo evaluations confirm its superior anti-dispersion capability and biosafety. This dual-functional platform offers a promising "smart" strategy to minimize thermal injury and enhance safety during ESD procedures. Download: Download high-res image (166KB) Download: Download full-size image
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DOI
高影响因子
Biomedicines
·
2026
·Vol. 14
·期 7
·1488
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IF 4.5
Jiayi Li,Xiaoyao Fu,Zhonghuan Qu,Yanjun Yang
Background: Psoriasis is a chronic inflammatory skin disease characterized by abnormal epidermal hyperplasia and immune-inflammatory imbalance. Although celastrol (Cel) exhibits potent anti-inflammatory activity, its strong hydrophobicity and low local delivery efficiency limit its therapeutic application.Methods: To enhance its transdermal delivery and topical therapeutic efficacy, a Cel-loaded liposomal hydrogel microneedle system (Cel-lipo-MNs) was developed in this study. Cel-loaded liposomes were first prepared by the thin-film dispersion method, and Cel-lipo-MNs were subsequently fabricated using a multistep vacuum micromolding process combined with UV-induced photocrosslinking.Results: In vivo studies demonstrated that, in an imiquimod-induced psoriasis-like mouse model, Cel-lipo-MNs markedly alleviated erythema, scaling, and skin thickening, reduced PASI-like scores. Further investigation revealed that Cel-lipo-MNs significantly downregulated the serum levels of IL-17, IL-23, and IFN-γ, and exhibited superior therapeutic efficacy compared with free celastrol, conventional liposomes, and blank microneedles.Conclusions: These findings indicate that Cel-lipo-MNs can substantially enhance the therapeutic effect of celastrol against psoriasis-like skin lesions, possibly through suppression of the IL-23/IL-17 inflammatory axis and related immune-inflammatory responses, and provide a promising transdermal delivery strategy for topical psoriasis treatment.
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DOI
高影响因子
Advanced Energy Materials
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2025
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IF 26
Jia-Xin Guo,Chang Gao,Yun-Fei Du,Feng Jiang,Nai-Lu Shen,Wen-Bo Tang,Xin Shen,Xin-Bing Cheng,Yuping Wu
Solvents in liquid and gel polymer electrolytes are recognized for contributing to high ionic conductivity in high-energy-density lithium metal batteries. However, parasitic reactions involving solvents and lithium metal induce safety risks under thermal abuse conditions and poor lifespan during room-temperature cycles, which are rarely investigated. This study introduces a thermoresponsive mono-solvent electrolyte as a built-in safety switch. The mono-solvent electrolyte polymerizes at elevated temperatures, creating a passivate polymer network without residue solvents. The polymer exhibits high thermal stability with 91% mass retention at 200 °C and significantly suppresses side reactions between lithium metal and the electrolyte, reducing thermal runaway risks. Ah-level Li||LiNi 0.8 Co 0.1 Mn 0.1 O 2 pouch batteries employing this electrolyte can efficiently improve the critical temperature of thermal runaway by 75 °C compared to the thermoresponsive gel polymer electrolyte. At ambient temperatures, the electrolyte promotes the formation of a stable solid electrolyte interphase (SEI) rich in LiF and Li 2 O, effectively reducing side reactions and dendrite growth on the lithium anode. Consequently, Li||LiNi 0.5 Co 0.2 Mn 0.3 O 2 cells retain 91% capacity after 152 cycles, even under high-loading cathodes (19.7 mg cm −2 , 3 mAh cm −2 ). This research offers valuable insights into inhibiting parasitic reactions during the electrochemical cycle and thermal runaway, enhancing the lifespan and safety of high-energy-density batteries.
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
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2024
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IF 4.9
Xin Bai,Jian Nie,Siyao Cheng,Daohu Sheng,Jijun Xiao,Wei Dong
The development of non-viral gene delivery systems often requires balancing transfection efficiency and cytotoxicity, particularly when using cationic polymers. Poly(2-hydroxypropenimine) (PHP), with its hydroxyl groups, presents a more biocompatible alternative to traditional polymers such as polyethyleneimine (PEI). In this study, we explored the potential to enhance PHP’s transfection capabilities and reduce its cytotoxicity through a targeted fluorination strategy. Specifically, fluorinated alkyl groups were grafted onto PHP via an ethylene oxide ring-opening reaction, with the reaction conditions optimized for temperature, solvent, and time to ensure efficiency. Transfection experiments using HEK 293 cells demonstrated that fluorinated PHP variants, especially PHP-FH8 16 , significantly improved transfection efficiency, achieving a 75.1 % gene expression rate at an N/P ratio of 2, compared to 44.0 % for unmodified PHP. The transfection experiments in Hela cells also showed substantial transfection efficiency. The gene expression rate was 53.2 % at an N/P ratio of 2 compared to 31.6 % for unmodified PHP. Notably, the fluorinated polymers exhibited lower cytotoxicity and increased serum stability, which suggests their potential as safer gene delivery systems. This study carefully evaluates the feasibility of using fluorinated cationic polymers as next-generation gene delivery vectors, balancing efficacy and safety. It underscores the strategic application of fluorination technology in developing modified polymer vectors that could lead to more efficient and safer non-viral gene therapy solutions.
研究领域:
生物材料学
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基因治疗
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分子生物学
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产品关联
DOI
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
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2025
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IF 8
Yajun Huang,Weifeng Xu,Yu Fan,Yanli Miao,Junling Wang,Yawei Lu,Zhirong Wang,Ye-Tang Pan
The widespread application of epoxy resin (EP) is limited by its inherent high fire hazard, primarily attributed to its substantial release of heat and the generation of toxic byproducts during combustion. The usage of 2D material of titanium carbide (MXenes, defined as MX) has been confirmed to show potentials in flame retardation. However, the flame-retardant efficiency of MX is relatively-low. Thus, the interfacial engineering strategy is employed for in-situ development of MoS 2 nanoflakes on MX surface, acquiring the product of MX@MoS 2 , which shows the higher interfacial interaction with EP matrix and dispersion stability. By only using 1.0 wt% MX@MoS 2 , the PHRR and THR are obviously decreased by 35.8 % and 38.0 %, respectively. Notably, the addition of 3 % MX@MoS 2 results in a higher PHRR reduction 49.4 %. Meanwhile, the PSPR and TSP have reduced by 48.6 % and 36.9 %. Such results indicate the enhanced flame retardance, benefiting from the physical barrier and chemical catalyst roles of MX@MoS 2 . Of note, the peak CO and CO 2 yields are decreased by 53.3 % and 57.2 %. Upon exposure to heat source, MX@MoS 2 promotes the formation of dense, thermally-stable char layer, which effectively insulates the underlying polymer, slows down thermal and material transport, and impairs the volatile emissions. It is satisfying to find that the mechanical characteristics of EP composites are enhanced after adding MX@MoS₂. This study offers ideas to produce an extremely efficient MX-based flame retardant, extending the applications of composites made of polymers.
研究领域:
材料科学
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化学工程
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纳米技术
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）