CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Yanqi Zhao,Wenjing Miao,Ruixing Quan,Changshun Yuan,Hao Ling,Hui Cao,Yaxuan Xiong,Yulong Ding
Composite PCMs use a graft semi-interpenetrating polymer network and short-cut carbon fibers. • The cross-linked network ensures excellent form stability and boosts mechanical properties. • High thermal energy storage capacity is maintained alongside the enhanced mechanical strength. • The g-IPN-PCM effectively suppresses battery temperature rise during charge-discharge cycles. • Adding short-cut carbon fibers enhances thermal management and protection for battery modules. Phase change materials offer energy-saving and uniform temperature control in lithium-ion battery thermal management. Enhancing the mechanical properties of phase change materials enables them to serve as structural protection against impact or accidental damage to batteries. In this work, a composite phase change material with a graft semi-interpenetrating polymer network is developed via a one-step in situ polymerization strategy, in which the polyurethane phase served as the thermal energy storage component and the acrylic copolymer phase provided structural reinforcement. The influence of polyethylene glycol molecular weight on the thermal and mechanical properties of the composite phase change material is investigated, and polyethylene glycol with a molecular weight of 6000 is identified as the optimal matrix component. The resulting g-IPN-PU6000 exhibited a high latent heat of 52.46 J/g and a tensile strength of 13.76 MPa. To further enhance mechanical robustness and interfacial stability, acid-treated short carbon fibers were incorporated into the g-IPN-PU6000 matrix. With 15 wt% acid-treated short carbon fibers, the composite phase change material achieved a tensile strength of 25.04 MPa and an impact strength of 4.31 kJ/m 2 , while maintaining latent heat values in the range of 51.73–70.32 J/g and a phase transition temperature between 52.51 and 57.93 °C. Numerical simulations demonstrated that IPN/ASCF CPCMs could maintain safe battery module temperatures under multiple 1C 2C charge-discharge cycles in various ambient conditions. Experimental results showed that under 3C discharge, the IPN/ASCF CPCM reduced battery temperature rise by 2.2 °C and mitigated battery damage by 45% during drop-ball impact tests. By integrating high latent heat with enhanced mechanical strength, the proposed multifunctional material has great potential to simultaneously perform thermal management and structural protection functions in battery systems.
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Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124100
·
IF 7.5
Qiang Zhang,Yiyang Ma,Qihua Sun,Yan Xu,Jialin Li,Zhaofeng Wu,Haiming Duan
Ethylene glycol (C 2 H 6 O 2 ) is a widely used industrial chemical whose leakage poses significant environmental and health risks, necessitating the development of efficient detection technologies. Current chemiresistive ethylene glycol sensors mostly rely on metal oxides that have high operating temperatures, poor moisture resistance, and high costs. Here, to tackle this issue, we fabricated biomass-derived carbon materials via one-step pyrolysis using raw equisetum (RE) as the abundant natural precursor. The as-obtained carbonized equisetum (CE) retains the native tubular vascular structure of the raw plant and carries trace self-doped K and Cl originating from the pristine plant. By regulating the pyrolysis temperature, the CE-4 sensor (carbonized at 400 °C) exhibits excellent room-temperature sensing performance toward ethylene glycol. On this basis, this study focused on investigating the ethylene glycol sensing mechanism of the horsetail-based biocarbon material. It systematically clarified the intrinsic correlation between the material’s defect density, surface adsorbed oxygen concentration, and carrier transport properties under pyrolysis temperature regulation. It also elucidated the regulatory mechanism of these factors on the sensing performance.
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ACS Applied Nano Materials
·
2026
·Vol. 9
·期 30
·14427-14438
·
IF 5.8
Wang Dandan,Cui Yuandong,Wang Hongxiao,Li Xin,Ben Haoxi,Yang Xiaoli
Selective conversion of cellulose into C 2 polyols
under
aqueous-phase conditions remains challenging due to the difficulty
in coordinating hydrolysis, C–C bond scission, and hydrogenation
while suppressing nonproductive side reactions. Herein, we report
an ultrasmall entropy-stabilized multimetallic PdPtRuCuNi nanocatalyst
supported on defect-rich nanostructured WO x that enables precise interfacial regulation of the interfacial functional
balance. Under relatively mild hydrothermal conditions, the nanocatalyst
achieves complete cellulose conversion with a high ethylene glycol
selectivity of 65.7%, significantly outperforming the corresponding
single-metal nanocatalysts. Spectroscopic and kinetic analyses reveal
an exceptionally low apparent activation energy, which originates
from the surface-assisted hydrolysis pathway constructed by the nanoscale
metal-oxide contact interface with superior interfacial wettability
and abundant oxygen vacancies at the nanointerface. Mechanistic studies
demonstrate that the electronically coupled multimetallic sites provide
an ultrahigh hydrogenation rate that effectively traps reactive C 2 fragments before they undergo rearrangement to organic acids.
This work identifies rational modulation of nanoscale interfacial
functional balance as a universal design principle to boost target
product selectivity and carbon utilization efficiency for aqueous-phase
biomass catalytic conversion.
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JOURNAL OF APPLIED ELECTROCHEMISTRY
·
2026
·Vol. 56
·期 6
·107
·
IF 3.7
He Xinkuai,Liu Jie,Guo Ruqing,Chen Xu,Zeng Genfa,Wang Yuxin,Wu Junhui,Du Jingjing,Wu Luye
The hygroscopic nature of ethylene glycol (EG) can induce spontaneous fluctuations in water content throughout anhydrous EG media. However, the residual water content may affect metal electrodeposition process in the EG media. Therefore, this study elucidates water content effect on Co(II) reduction process and cobalt electrocrystallization mechanism. Compared with those in anhydrous EG, the Co(II) electrochemical reduction mechanism and the metallic cobalt electrocrystallization mechanism in EG containing various water contents remain unchanged. Co(II) reduction follows one-step irreversible reaction. However, varying water content can modify some reduction characteristics such as nucleation overpotential, peak potential, peak current density, and kinetic irreversibility in the EG-H 2 O system. Cobalt nucleation follows a typical diffusion-controlled mechanism and demonstrates the three-dimensional instantaneous growth behavior. Additionally, adding water to anhydrous EG can alter the Co(II) transport mechanism and interface reaction kinetics, and lead to the occurrence of adsorption phenomena that do not occur in anhydrous EG. Importantly, with increasing water content, the charge transfer resistance of Co(II) decreases gradually. The kinetic control can transition from electrochemical polarization at low overpotentials to mixed diffusion/charge-transfer control at high overpotentials. Water content exhibits a negligible effect on the composition of cobalt deposits, but a significant effect on their microstructure. These findings collectively demonstrate that the role of water in the cobalt electrodeposition process cannot be ignored in EG-based electrolytes, and controlling the water content can precisely regulate the cobalt coatings microstructure. This work provides a simple and efficient method for precisely controlling material microstructure.
Section
Graphical
The alternative text for this image may have been generated using AI.
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Surfaces and Interfaces
·
2026
·
IF 6
Fochun Deng,Qin Zhao,Kuiliang Gong,Qilong Zhao,Gaiqing Zhao,Zhuang Xu,Xiaobo Wang
A renewable bio-based phytic acid-based deep eutectic solvent (DES) was developed as a green lubricant additive. • DES addition improved PEG400 friction and wear performance under various conditions. • The lubrication mechanism of DES has been elucidated. Driven by the goals of sustainable development and environmental protection, this study aims to address the reliance of conventional lubricant additives on non-renewable petrochemical resources. To this end, a green deep eutectic solvent (DES) type lubricant additive was designed and prepared using renewable bio-based phytic acid (PA) as the raw material. The tribological performance of the DES in PEG400 under various testing parameters was evaluated using a reciprocating friction and wear tribometer (SRV). Findings indicate that the DES markedly enhances the friction-reducing and anti-wear performance of Polyethylene glycol 400 (PEG400) under various loads (50–300 N), a wide temperature range (25–150 °C), and multiple frequencies (5–45 Hz). When 0.25 wt% is added, the average coefficient of friction (ACOF) of PEG400 was reduced by up to 48.69%, the wear volume decreased by 97.68%. The lubrication mechanism of the PA-based DES was elucidated by analyzing the microstructure and chemical composition of the wear surfaces. It was found that the DES forms an in situ organic-inorganic hybrid composite lubricating film at the friction interface through chemical adsorption and tribochemical reactions, thereby delivering excellent lubrication performance. The work thus proposes a new direction for creating sustainable, high-performance lubricant additives. Download: Download high-res image (265KB) Download: Download full-size image
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FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
·
2023
·
IF 2.3
Wei Li,Bei Xi,Jing Ma,XiaoXia Tian,Xu Gao,YanZhong Yang,Liang Xian
Ultrafine Pt nanoparticles (Pt/SWCNTs) supported on single-walled carbon nanotubes (SWCNTs) were prepared by a photochemical method assisted by ethylene glycol (EG) as a reducing agent without the addition of stabilizing agents. the application in the reduction of 4-Nitrophenol (4-NP) was also explored. XRD diffraction patterns show that the content of Pt (111) crystal planes is higher, which is beneficial for improving the catalytic activity of platinum nanoparticles. TEM results showed that Pt/SWCNTs-E3 prepared under Ultra Violet (UV) light irradiation had a small-size particle with an average particle size of about 2.2 nm. XPS results showed that the prepared Pt nanoparticles mainly existed in the form of Pt0. The catalytic performance test results showed that the Pt/SWCNTs prepared under the UV condition of 395 nm had the highest activity for catalyzing the reduction of 4-NP, and the apparent rate constant was k = 0.34 min−1, indicating that it had good catalytic activity. After seven cycles, the conversion rate remains about 83%, which has good reusability and stability. The results show that the aggregation of Pt intermediates can be effectively controlled by photo-induced and strong metal − support interaction (SMSI) to obtain ultrafine nanoparticles dominated by Pt0.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2017
·
IF 3.133
Weidong Zhang,Qizhi Dong,Haozi Lu,Bonian Hu,Yong Xie,Gang Yu
Three-dimensional (3D) network structure nanomaterials (NMs) show excellent catalytic performance due to the larger active surface area. A glucose-directed, surfactant-free and one-step direct chemical co-reduction method for synthesis of Pt-Cu alloy nanowires (NWs) under room temperature was demonstrated in present paper. The Pt-Cu NWs were obtained through the co-reduced of CuCl 2 and H 2 PtCl 6 by sodium borohydride in the presence of glucose, the glucose in which not only acted as one-dimensional (1D) growth-directing agent, also as the stabilizing agent. The average diameter of NWs was about 3.1 nm and NWs showed typical face-centered-cubic (fcc) alloy crystal structure. The influence of Pt/Cu ions ratios in precursor solution on the bimetallic composition of NWs had been studied, and NWs displayed the feature of composition-tuning. The electro-catalytic activity of Pt-Cu alloy NWs for ethylene glycol oxidation reaction (EGOR) in alkaline medium was strongly related on their compositions. The Pt 31 Cu 69 NWs exhibited about 1.8 times higher than that of commercial Pt/C and higher durability. The enhanced catalytic performance of Pt-Cu alloy NWs was mainly attributed to their unique 3D network structure and the synergetic effects between Pt and Cu.
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POLYMER DEGRADATION AND STABILITY
·
2013
·Vol. 98
·期 9
·1591-1600
·
IF 2.77
Lidong Feng,Xinchao Bian,Zhiming Chen,Gao Li,Xuesi Chen
Two novel biodegradable copolymers , including poly(ethylene glycol)-succinate copolymer (PES) and poly(ethylene glycol)-succinate- l -lactide copolymer (PESL), have been successfully synthesized via melt polycondensation using SnCl 2 as a catalyst. The copolymers were used to toughen PLA by melt blending . The DSC and SEM results indicated that the two copolymers were compatible well with PLA, and the compatibility of PESL was superior to that of PES. The results of tensile testing showed that the extensibility of PLA was largely improved by blending with PES or PESL. At same blending ratios, the elongation at break of PLA/PESL blends was far higher than that of PLA/PES ones. The elongation maintained stable through aging for 3 months. The moisture absorption of the blends enhanced due to the strong moisture absorption of PEG segments in PES or PESL molecules , which did not directly lead to enhance the hydrolytic degradation rate of the PLA. The PLA blends containing 20–30 wt% PES or PESL were high transparent materials with high light scattering. The toughening PLA materials could potentially be used as a soft biodegradable packaging material or a special optical material .
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CARBOHYDRATE POLYMERS
·
2018
·
IF 5.158
Le Li,Rui-Ying Bao,Tao Gao,Zheng-Ying Liu,Bang-Hu Xie,Ming-Bo Yang,Wei Yang
Improving the physical properties of biobased polymers using bionanofillers is essential to preserve its biodegradability. This work presents a dopamine-induced functionalization of cellulose nanocrystals (CNCs) with polyethylene glycol (PEG), to enhance the crystallization, mechanical and barrier properties of poly( L -lactic acid) (PLLA) bionanocomposites. The effect of molecular weight of grafted PEG on the properties of PLLA is also studied. PEGylation of CNCs significantly enhance the crystallization of PLLA, especially for CNCs functionalized with PEG of lower molecular weight, which lead to balanced strength and ductility, and 66.4% reduction in the oxygen permeability coefficient at a low content of 0.5 wt %. Moreover, 168% improvement of ductility for PLLA can be obtained by CNCs functionalized with longer PEG chains. The surface functionalization of CNCs proposed here opens up a green avenue towards designing and fabricating fully bio-based, high-barrier and low-cost polymer nanocomposites for packaging applications.
研究领域:
高分子材料
·
纳米复合材料
·
生物基包装
·
材料科学
·
聚合物改性
·
结晶动力学
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高影响因子
MACROMOLECULES
·
2014
·
IF 5.927
Bo Zhang,Hui Tang,Peiyi Wu
Dynamic thermal phase transition behavior of a thermoresponsive copolymer P(MEO2MA-co-PEGMA2080) synthesized by ATRP random copolymerization of 2-(2-methoxyethoxy)ethyl methacrylate(MEO2MA, Mn = 188 g/mol) and poly(ethylene glycol) methyl ether methacrylate (PEGMA, Mn= 2080 g/mol) in D2O was studied by means of infrared spectroscopy in combination with two-dimensional correlation analysis (2Dcos). Because of the absence of strong intermolecular hydrogen bonding interactions between polymer chains and the amphiphilic property of PEGMA2080 with long ethylene glycol segments, this copolymer exhibited an unusual thermally induced multistep aggregation process. In general, the change of hydrophilic side chain takes place before carbonyl groups and backbones during the whole process and thus the driving force of this phase transition process of P(MEO2MA-co-PEGMA2080) should be hydration changes of side chains. 2Dcos was finally employed to discern the sequence order of all the group motions during heating process in different temperature regions. It is concluded that during the phase transition P(MEO2MA-co-PEGMA2080) chains successively experience “unimers–clusters–micelles– aggregates” four consecutive conformation changes.
研究领域:
高分子科学
·
材料化学
·
物理化学
·
智能材料
·
光谱学
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高影响因子
JOURNAL OF POWER SOURCES
·
2021
·
IF 9.127
Shujiao Yang,Zhihua Zhang,Lin Shen,Peng Chen,Zhi Gu,Mingyuan Chang,Yue zhao,Hao He,Xiayin Yao
An asymmetric solid polymer electrolyte (ASPE) is designed as two-in-one layered structure driven by gravity and in-situ polymerization. The rigid layer composed of polymer embedded three-dimensional continuous Li 1.5 Al 0.5 Ge 1.5 (PO 4 ) 3 (LAGP) framework improves the Li + transference number and critical current densities. The soft poly(ethylene glycol) (PEG) layer prepared via thermal polymerization by poly(ethylene glycol) methyl ether methacrylate (PEGMEM) makes good interfacial contact with cathodes. Driven by gravity, the two layers are automatically stratified during the polymerization. By virtue of this structural merit, the Li + transference number of PEG@LAGP ASPE extends to 0.144 (vs. 0.083 of PEG SPE), and symmetric Li/PEG@LAGP ASPE/Li cells can stably cycle over 400 h at current density of 0.5 mA cm −2 under 60 °C. LiFePO 4 /PEG@LAGP ASPE/Li cell exhibits excellent electrochemical performance at 2.5 C (0.5 mA cm −2 ) under 60 °C, reaching to a maximum specific capacity of 130.8 mA h g −1 and a capacity retention of 87.2% after 1000 cycles. Furthermore, the cells operating at high rates or high temperatures also have been demonstrated. This work provides a promising electrolyte design strategy for all-solid-state batteries with superior interface compatibility and long cycle life.
研究领域:
材料科学
·
电化学
·
储能技术
·
高分子科学
·
电池技术
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Bolun Mei,Yueru Wang,Zhouxuan Zang,Ouyang Liu,Xu Liang,Guoji Liu,Han Sun,Xingchuan Yang,Li Xu
Calcination-driven Cu exsolution from a CuZr precursor tunes the Cu-ZrO 2 interfacial environment. • Catalysts with the optimal interfacial environment achieve ethanol selectivity approaching 90%. • Kinetic analysis and in situ DRIFTS support a dehydration‑hydrogenation pathway at the Cu-ZrO 2 interface. • DFT reveals that Cu-ZrO 2 interface converts high-barrier concerted dehydration into a lower-barrier stepwise route. The selective hydrogenolysis of ethylene glycol (EG) to ethanol is a critical step in the dimethyl oxalate (DMO)-to-ethanol process, yet the catalytically relevant Cu environment for this transformation remains insufficiently understood. Here, we prepared a series of CuZr catalysts with distinct Cu-ZrO 2 interfacial structures through calcination-induced structural evolution. Structural characterization reveals that calcination progressively redistributes Cu species from a more bulk-associated state in ZrO 2 to surface-enriched Cu, and ultimately to segregated Cu-rich domains. Among the catalyst series, calcination at an intermediate temperature of 550 °C gave the best performance. Ethanol yield scaled with the accessible Cu surface area, and both exhibited a volcano-type dependence on calcination temperature, whereas the Cu-normalized TOF decreased monotonically. This discrepancy underscores that exposed Cu alone cannot account for the catalytic behavior, and suggests an important contribution from coupled Cu-ZrO 2 interfacial environments. Kinetic analysis and in situ DRIFTS support a pathway involving dehydration-related transformation of EG followed by hydrogenation of carbonyl-type intermediates. DFT results further suggest that, relative to pristine ZrO 2 , the Cu-ZrO 2 interface stabilizes dehydration related carbon-containing intermediates, thereby enabling a more accessible stepwise pathway for EG dehydration and facilitating the subsequent hydrogenation to ethanol. These findings provide an interface engineering strategy for designing Cu-based catalysts in the DMO-to-ethanol process and related polyol hydrogenolysis reactions. Download: Download high-res image (129KB) Download: Download full-size image
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