CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xiangjun Li,Dening Zou,Libo Tong,Miaomiao Li,Yinxia Dong,Shiwei Xu,Qingjuan Wang,Kuaishe Wang
Self-healing materials have garnered considerable attention for their remarkable damage recovery capabilities. Nonetheless, the trade-off between enhanced mechanical strength and self-healing efficiency poses a formidable challenge. Inspired by the structure of biological enthesis, this study presents a self-healing polymer composite with complementary hydrogen bonding sites and gradient interface. The self-healing matrix is synthesized by incorporating multi-strength hydrogen bonds sites within a flexible polydimethylsiloxane backbone. The gradient interface is a character with “core-sheath” structure that integrates a rigid core (Ti 3 C 2 -MXene-grafted graphene oxide) and a soft shell (a cerium-polyphenol complex). The result exhibits impressive tensile strength (5.44 MPa, lifting approximately 4,434 times its own weight) and self-healing efficiency (96.4%) without requiring external stimuli. The resultant composite breaks through the monotony of the traditional two-dimensional (2D) nanofiller interface design and has the best mechanical performance in its kind. This composite coating also offers superior corrosion resistance (achieving a low-frequency impedance modulus of up to 5.25 × 10 9 ohm cm 2 ) and healing corrosion resistance after damage for magnesium. Furthermore, this composite integrates self-healing properties, corrosion resistance, flame retardancy, and recyclability, offers a promising avenue of self-healing polymer composite for practical applications.
研究领域:
材料科学
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生物仿生学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES PART B-ENGINEERING
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2025
·
IF 14.2
Yujie Yue,Guojun Song,Li Li,Jie Zhao,Xupeng Li,Guoqiang Cao,Xiang Luo,Bentao Yu,Min Fang,Yuankai Li,Guangshun Wu,Lichun Ma
The interface is crucial for the mechanical properties of composite which is tightly linked to the microstructure of CF surface and resin matrix. However, the modulus mismatch between CF and resin leads to stress concentration and poor interfacial performance. This study proposes a bidirectional structural design strategy aimed at optimizing the interfacial performance of CF/epoxy composites from the perspective of interfacial construction and modulus matching. An organic-inorganic three-dimensional hybrid particle (the notation indicates a composite formed between PDI and GO through both chemical and physical interactions) was synthesized to enhance the modulus and toughness of resin, as well as the chemical bonding, mechanical entanglement and wettability with resin of CF surface. Compared to the original and single pathway (either the CF or resin), the transverse tensile strength of the bidirectionally modified composites increased by 68.4%, 31.2% and 18.0%, and the interlaminar shear strength increased by 23.6%, 8.5%, 18.6%, respectively. Furthermore, a comprehensive exploration of synergistic reinforcement mechanisms and stress dispersion patterns at the composites was conducted. This bidirectional structural design strategy provides a new avenue for the next-generation high-performance composites in the fields of aerospace, rail transit and so on.
研究领域:
材料科学
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复合材料工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Yanjia Zhang,Kangyi Lu,Mei He,Xiaobiao Zuo,Gang Li,Xiaoping Yang
A rigid-and-flexible interphase was established by a starlike copolymer (Pc-PGMA/Pc) consisting of one tetraaminophthalocyanine (TAPc) core with four TAPc-difunctionalized poly(glycidyl methacrylate) (PGMA) arms through the surface modification of carbon fibers (CFs) and compared with various interphases constructed by TAPc and TAPc-connected PGMA (Pc-PGMA). The increase in the content of N–C═O showed that PGMA/Pc branches were successfully attached onto the CF-(Pc-PGMA/Pc) surface, exhibiting concavo-convex microstructures with the highest roughness. Through adhesive force spectroscopy by atomic force microscopy (AFM) with peak force quantitative nanomechanical mapping (PF-QNM) mode and visualization of the relative distribution of TAPc/PGMA via a Raman spectrometer, a rigid interphase with highly cross-linked TAPc and a flexible layer from PGMA arms as the soft segment were separately detected in CF-TAPc/EP and CF-(Pc-PGMA)/EP composites. The rigid-and-flexible interphase in the CF-(Pc-PGMA/Pc)/EP composite provided excellent stress-transfer capability by the rigid inner modulus intermediate layer and energy absorption efficiency from the flexible outer layer, which contributed to 64.6 and 61.8% increment of transverse fiber bundle test (TFBT) strength, and 33.8 and 40.6% enhancement in interfacial shear strength (IFSS) in comparison with those of CF-TAPc/EP and CF-(Pc-PGMA)/EP composites. Accordingly, schematic models of the interphase reinforcing mechanism were proposed. The interfacial failures in CF-TAPc/EP and CF-(Pc-PGMA)/EP composites were derived from the rigid interphase without effective relaxation of interfacial stress and soft interphase with excessive fiber–matrix interface slippage, respectively. The cohesive failure in the CF-(Pc-PGMA/Pc)/EP composite was attributed to the crack deflection through the balance of the modulus and deformability from the twin-stage gradient intermediate layer.
研究领域:
材料科学
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界面工程
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高分子化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-11
·
IF 15.7
Fan Wenjie,Zhu Chunliu,Wang Xingjie,Wang Huanlei,Zhu Yue,Chen Jingwei,Tian Weiqian,Wu Jingyi,Yu Guihua
Paring seawater electrolyte with zinc metal electrode has emerged as one of the most sustainable alternative solutions for offshore stationary energy storages owing to the intrinsic safety, extremely low cost, and unlimited water source. However, it remains a substantial challenge to stabilize zinc metal negative electrode in seawater electrolyte, given the presence of chloride ions and complex cations in seawater. Here, we reveal that chloride pitting initiates negative electrode corrosion and aggravates dendritic deposition, causing rapid battery failure. We then report a charge gradient negative electrode interface design that eliminates chloride-induced corrosion and enables a sustainable zinc plating/stripping performance beyond 1300 h in natural seawater electrolyte at 1 mA cm -2 /1 mAh cm -2 . The gradually strengthened negative charges formed via diffusion-controlled electrostatic complexation of biomass-derived polysaccharides serve to repel the unfavorable accumulation of chloride ions while simultaneously accelerating the diffusion of zinc ions. The seawater-based Zn | |NaV 3 O 8 ·7H 2 O cell delivers an initial areal discharge capacity of 5 mAh cm -2 and operates over 500 cycles at 500 mA g -1 .
研究领域:
材料科学
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能源存储
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2022
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IF 9.965
Gang Qin,Yongcun Liu,Wenye Zhang,Wenjie He,Xiaoxiang Su,Qianqian Lv,Xiang Yu,Qiang Chen,Jia Yang
Flexible supercapacitors have attracted more and more attention because of their promising applications in wearable electronics, however, it is still important to harmonize their mechanical and electrochemical properties for practical applications. In the present work, a seamless transition between polyaniline (PANI) electrode and NH 4 VO 3 _FeSO 4 dual redox-mediated gel polymer electrolyte (GPE) is presented through in situ formation of gradient interface structure. Multiple physical interactions make the GPE excellent mechanical and self-healing properties. Meanwhile, double role functions of Fe 2+ ions greatly relieve the traditional contradiction between mechanical and electrochemical properties of GPE . Moreover, benefiting from the structure and reversible redox reactions of VO 3- and Fe 2+ , the integrated supercapacitor delivers an exceptional specific capacitance of 441.8 mF/cm 2 , a high energy density of 63.1 μWh/cm 2 , remarkable cyclic stability. Simultaneously, the gradient structure from PANI electrode to GPE greatly improves the electrode/electrolyte interface compatibility and ion transport, which endows the supercapacitor with stable electrochemical performance. Furthermore, the supercapacitor well-maintains the specific capacitance even at −20 °C with over 89.19 % retention after 6 cutting/healing cycles. The gradient interface structure design will promote the development of high-performance supercapacitor.
研究领域:
材料科学
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能源存储
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纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-14
·
IF 15.7
Song Yexin,Chen Manjing,Zhong Ziyang,Liu Zhexuan,Liang Shuquan,Fang Guozhao
Developing practical technical index of aqueous zinc metal batteries (ZMBs) is crucial to support safe large-scale energy storage. However, the realistic performance demonstration of ampere hour (Ah)-scale aqueous ZMBs under high mass loading and large areal capacity, which is the key to the industrial application of aqueous ZMBs, remains a critical challenge. In this paper, we propose a bilateral in-situ functionalization strategy in response to the issues that face high mass loading and large areal capacity of aqueous ZMBs. A gradient interface of Zn negative electrode was formed by directional adsorption and in-situ decomposition of organic sodium salt electrolyte additive. It avoids the influences from the fluctuation of electrolyte state and positive electrode dissolution, realizing uniform large-capacity plating/stripping in Ah-scale pouch cell. The positive electrode interface was also in-situ modified by electrolyte additive, which not only facilitated ion intercalation but also suppressed positive electrode dissolution through adsorption at the interface, thereby achieving high-loading stability. As a result, the cyclic stability in coin cell maintained more than 4000 cycles at 2 A g −1 , underscoring the superior compared to its counterpart. More importantly, the Ah-scale pouch cell can last more than 680 cycles with an accumulated capacity of 319.6 Ah. This work offers a roadmap for designing practical Ah-scale ZMB pouch cells.
研究领域:
储能技术
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电化学
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材料科学
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电池技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2023
·Vol. 14
·期 1
·1-12
·
IF 16.6
Wang Wei,Chen Shan,Liao Xuelong,Huang Rong,Wang Fengmei,Chen Jialei,Wang Yaxin,Wang Fei,Wang Huan
In situ formation of a stable interphase layer on zinc surface is an effective solution to suppress dendrite growth. However, the fast transport of bivalent Zn-ions within the solid interlayer remains very challenging. Herein, we engineer the SEI components and enable superior kinetics of Zn metal batteries under harsh conditions through regulating the sequence of interfacial chemical reaction. With the differences in chemical reactivity of trimethyl phosphate co-solvent and trifluoromethanesulfonate anions in the Zn 2+ -solvation shell, Zn 3 (PO 4 ) 2 and ZnF 2 are successively generated on Zn metal surface to form a gradient ZnF 2 –Zn 3 (PO 4 ) 2 interphase. Mechanistic studies reveal the outer ZnF 2 facilitates Zn 2+ desolvation and inner Zn 3 (PO 4 ) 2 serves as channels for fast Zn 2+ transport, contributing to long-term cycling at subzero temperatures. Impressively, the gradient SEI enables a high lifespan over 7000 hours in Zn symmetric cell and a capacity retention of 86.1% after 12000 cycles in Zn–KVOH full cell at –50 °C.
研究领域:
电化学
·
材料科学
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电池技术
✓ 已验证
DOI
PubMed
高影响因子
Advanced Energy Materials
·
2021
·Vol. 11
·期 12
·2100026
·
IF 29.368
Yu Cheng,Jun Shu,Lin Xu,Yangyang Xia,Lulu Du,Gang Zhang,Liqiang Mai
Solid-state lithium batteries (SSLBs) have attracted more attention due to their improved safety and high energy density. Although numerous solid-state electrolytes (SSEs) with high ionic conductivity have been frequently reported, poor solid–solid interfacial contact and interfacial chemical reactions around the cathode in SSLBs can hinder their practical application. Here, a gradient nanowire (NW) cathode is demonstrated for advanced interface engineering in SSLBs by a facile solvent evaporation process. In this unique gradient cathode membrane, one side surface with more ionic conductive polymer provides a smooth contact with SSE, while the other side surface with more electronic conductive NW/reduced graphene oxide composite provides rapid electron transport acting as a current collector. Furthermore, the inside NW cathode materials are uniformly coated by a solid polymer electrolyte and such a structure changes the point-to-point contact to a large-area contact in the cathode, providing continuous channels for rapid electron/ion transport and improved mechanical strength. The effective interface engineering gives SSLBs enhanced structural stability and excellent electrochemical performance. The as-obtained SSLBs can deliver 200 mAh g –1 capacity after 100 cycles at room temperature without obvious structural degradation. This novel design of NW-based gradient cathodes demonstrates a promising strategy for solid–solid interface engineering in solid-state lithium batteries.
研究领域:
材料科学
·
储能
·
电化学
·
纳米技术
·
电池技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）