CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Amin Chen,Na Li,Chenxu Sun,Yanmin Qin,Luyao Qi,Huipei Zhang,Haifeng Bao
Both inorganic solid electrolytes and organic polymer solid electrolytes face limitations in practical applications due to their shortcomings. Inorganic solid electrolytes suffer from high interface impedance and poor mechanical properties, while polymer solid electrolytes struggle with low Li-ion conductivity, thermal stability and electrochemical stability. To overcome the drawbacks of single phase solid electrolytes while utilizing their respective advantages, composite solid electrolytes have emerged as a popular research direction in recent years. Typical composite solid electrolytes feature inorganic filler particles dispersed in a polymer matrix. In this work, we introduce a novel non-flammable composite solid electrolyte with inorganic matrix and inorganic fillers. The composite solid electrolyte was prepared by integrating a 3D Si-Zr-O-C inorganic fiber film with Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 (LLZTO) particles that have high ionic conductivity via a vacuum impregnation process, which is all-inorganic solid state electrolyte. This unique design of established network structure provides fast Li-ion transport channels, enabling high ionic conductivity (2.3 × 10 −4 S cm −1 at room temperature). Furthermore, the Si-Zr-O-C/LLZTO (SLTO) composite electrolyte also exhibits superior flexibility, thermal stability, and electrochemical stability. The SLTO composite solid electrolyte presents a promising electrolyte candidate for next generation lithium ion batteries.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Wenjing Yang,Xujie Zhang,Chenhang Ding,Wurikaixi Aiyiti,Cijun Shuai
Bacterial infections especially bacterial biofilm infections have always been a major obstacle to the reconstruction of deep skin defects. Herein, a photothermal activated multifunctional nanocatalyst (Ni@ZIF-C) is synthesized by doping Ni into zeolitic imidazolate framework-67 (ZIF-67) and carbonizing, following by introducing into polycaprolactone (PCL) to prepare porous scaffolds by selective laser sintering. Especially, the Ni@ZIF-C nanocatalyst endows scaffold favorable chemo/photodynamic/photothermal triple-mode antibacterial activity under near-infrared light irradiation. On the one hand, the highly conductive Ni@ZIF-C improves the separation efficiency of photogenerated electron-hole pairs to trigger reactive oxygen species (ROS) generation, achieving photodynamic sterilization. On the other hand, the superior photothermal conversion efficiency of Ni@ZIF-C in scaffold not only directly destruct bacterial biofilms by hyperthermia but also enhance its own peroxidase-like activity to induce more ROS production, and the latter is bactericidal by chemical mode. Importantly, the destruction of the biofilms enables the pre-generated ROS to kill deep bacteria, achieving a triple-mode combined or even synergistic antibacterial efficacy. Results demonstrated that the PCL/Ni@ZIF-C scaffold with triple bactericidal modalities presents stronger bactericidal ability than PCL/ZIF-67 and PCL scaffolds. Encouragingly, it remarkably destroyed S. aureus and E. coli biofilms and inhibited biofilm formation, effectively triggered massive ROS generation and ultimately eradicated the bacteria deep within the biofilms. Taken together, the scaffold exhibited tremendous potential in utilizing photothermal activated multimodal combined antibiofilm and antibacterial therapy.
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CERAMICS INTERNATIONAL
·
2024
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IF 5.1
Xiao-Chun Deng,Guo-Hua Zhang
A series of high-entropy carbide ceramics with high-performance were successfully prepared by SPS using self-synthesized fine high-entropy carbides powders as hard phase and metal Co as the binder. The effects of Ti and/or Mo addition on densification, grain size and mechanical properties of (ZrHfTaNb)C–10Co ceramic were investigated. The results showed that the addition of Mo improved the wettability between the ceramic phase and Co phase, and significantly increased the densification degree of the ceramics. In addition, the average grain size decreased and the microstructure became more uniform after adding Ti and/or Mo. Compared with the mechanical properties of (ZrHfTaNb)C–10Co ceramic, those of (ZrHfTaNbTiMo)C–10Co ceramic were greatly enhanced under the action of high-entropy effect and solid solution strengthening. The hardness and fracture toughness of the (ZrHfTaNbTiMo)C–10Co ceramic achieved the satisfactory values of 20.37 GPa and 8.59 MPa m 1/2 , respectively.
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Yurou Zhong,Zhe Zhang,Jinfeng Tian,Weiwei Tang,Wei Gao,Yufeng Li,Yuanhong Shang
Solar desalination driven by interfacial heating is regarded as a promising technique to mitigate the freshwater shortage crisis. Significant efforts have been dedicated to developing innovative photothermal materials and optimizing thermal management to enhance system evaporation rates. Carbon-based photothermal materials typically exhibit superior broadband light absorption due to their unique energy band structures. However, the fabrication of solvent-processable carbon materials demonstrating both high light absorption and broadband spectral coverage remains a significant challenge. Microstructural engineering of these materials presents a promising approach for enhancing their optical absorption characteristics and resultant photothermal conversion efficiency. In this study, a carbon shell with adjustable light absorption capacity was fabricated on the outer layer of Fe x O y @silicon cores. Adjustable light absorption is achieved through a critical fabrication process comprising templated co-condensation of silica and resorcinol-formaldehyde resin and subsequent carbonization. The rough and nanoporous carbon layers introduce randomness that disrupts spherical symmetry and eliminates light scattering-induced reflection peaks, thus enhancing solar energy absorption and utilization. After establishing the nanoparticle preparation process with optimal light absorption capability, nanoparticles are coated onto the surface of wood sponge to fabricate anti-pollution solar evaporators. These solar evaporators combine excellent light absorption with salt resistance, yielding a solar evaporation rate of 1.32 kg m −2 h −1 and an outstanding photothermal conversion efficiency of 91.8 % under 1 sun irradiation. The evaporator demonstrated exceptional practical applicability by effectively purifying real-world water matrices, including seawater, domestic sewage, and industrial wastewater. It achieved high ion removal rates (>97 % for major seawater ions), efficient heavy metal rejection (e.g., 99.09 % for Cu 2+ , 99.79 % for Ag + ), and significant reduction in organic pollutants and total dissolved solids, with the purified water meeting stringent WHO and EPA standards for drinking and discharge. Owing to its exceptional salt resistance and self-cleaning properties, the sponge@coating interfacial evaporator enabled continuous desalination operation with minimal fouling. Ultimately, a multifunctional device for sustainable freshwater production (encompassing desalination, purification, and harvesting) was developed and demonstrated in an operational solar interfacial evaporation platform.
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ADVANCED FUNCTIONAL MATERIALS
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2025
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IF 19
Quanyu Wang,Zichao Wang,Zhiqian Li,Pu Liu,Zonglin Pan,Zhaoqian Xie,Yongxin Song,Xuegang Zhang,Ruisong Xu
Obtaining multi-mode tactile information with one sensor in deep sea is greatly needed yet still challenging. In this paper, a flexible deep sea tactile sensor is reported, capable of detecting object's conductivity, hardness, pressing pressure and position simultaneously just by one touch. The sensor works by using single-walled carbon nanotubes doped thermoplastic polyurethane elastomer (SWNTs-TPU film) for differentiating object's conductivity based on the work function difference induced electron transfer. A porous anionic aliphatic waterborne polyurethane film containing carboxyl functional groups (C-WPU) is used for generating ionic currents under pressing to determine the pressing pressure and position and recognize the relative hardness of an object. It is found that the magnitude of current signal generated by a metallic object is much larger than that of an insulative object. The signal magnitude increases with the increase in the applied pressure, the pressing area and the film thickness. Furthermore, completely encapsulating the C-WPU film and introducing carboxylic functional groups significantly improve the sensitivity (maximum 1.2 kPa −1 ). The response time and recovery time of sensing signals are 150 and 530 ms respectively. A pressure detection range of 45–625 kPa is achieved, with a pressure detection resolution of 9.2 kPa. The signal magnitude is decreased only by 10.54% when the sensor is placed under a simulated 100 m water depth. Proof of concept demonstration of underwater object discrimination and hardness recognition with this sensor placed on a mechanical finger of a ROV (Remotely Operated Vehicle) is successfully achieved. This work provides a new solution for multi-modal tactile information sensing in deep-sea environment.
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Materials Today
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2024
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IF 21.1
Xuanfeng Chen,Ziang Jiang,Qihou Li,Shunrui Luo,Yujie Wang,Fulu Chu,Chunhao Qin,Feixiang Wu
Lithium-metal fluoride batteries with higher energy density than commercial lithium-ion batteries are promising candidates for future energy storage. However, challenges such as poor electronic and Li + conductivity, active material dissolution, and volume expansion during cycling hinder their practical application. Here, a well-designed yolk-shell FeF 3 @C is aimed to address these issues. The outer carbon shell, derived from an organic carbon source, enhances the electronic conductivity of the embedded FeF 3 nanoparticles and protects them from unfavorable dissolution. The hollow design is utilized to provide sufficient space for FeF 3 nanoparticles to expand during cycling, preserving the carbon shell to not be destroyed. Post-mortem studies reveal the in-situ formation of Fe/O shell during cycling, which further prevents the loss and shuttle of Fe. Consequently, the FeF 3 @C nanocomposites deliver a capacity of 400 mAh g −1 at 1.0 C over 1500 cycles with a high capacity retention close to 95 %, and achieve super-rate capability up to 40 C. Moreover, the produced yolk-shell FeF 3 @C nanocomposites demonstrate air stability, which can simplify the manufacturing process of metal fluoride cathodes. Our study offers a promising direction for designing FeF 3 cathodes that achieve both outstanding electrochemical performance and air stability for practical Li-FeF 3 batteries.
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PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
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2025
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IF 7.8
Yuan Chen,Dongdong Jia,Yu Gao,Wang Yuan,Yongyue Sun
To develop an efficient bifunctional material for bisphenol A (BPA) removal, a nitrogen-rich hierarchical porous Cu x @N-CM composite was synthesized by pyrolyzing Cu@ZIF-8 encapsulated with dicyandiamide (DCD). DCD introduced more pyridinic N, graphitic N, and Cu-N x active sites, and enhanced the material’s surface area and pore size. This unique structure endows the material with both superior adsorption capacity and peroxymonosulfate (PMS) activation ability, enabling efficient BPA removal from water. Specifically, after adsorption enrichment, 0.1 g L −1 of Cu x @N-CM can remove 75 % of BPA (20 mg L −1 ). Subsequent addition of 0.1 mmol L −1 PMS achieves complete BPA removal within 15 min. Furthermore, this material and process effectively minimize PMS consumption, exhibit a broad pH application range, and good cycling stability. Mechanistic studies show that adsorption occurs through pore filling, hydrophobic interactions, π-π electron donor-acceptor (EDA) interactions, and complexation. PMS activation is driven by radical and non-radical synergies. In addition, the adsorption active sites and PMS activation sites do not overlap, and the adsorption process prolongs the residence time of pollutants on the catalyst surface, thereby promoting the degradation process. This study provides valuable insights into designing catalysts for removing high-concentration, refractory organic pollutants from water.
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Inorganic Chemistry Frontiers
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2025
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IF 6.4
Ting Wu,Jianpeng Sun,Zhan Zhao,Kelei Huang,Xiangchao Meng
Modulation of d-band center of Ni to achieve an equilibrium between H-adsorption and Hdesorption (H ads /H des ) remains a great challenge. Herein, Ni@C derived from MOFs was treated by ultraviolet light. It was found that sp 2 edge carbon were converted to sp 3 defective carbon and further combined with Ni clusters. Experimental and theoretical calculations confirmed that the enhanced d-p orbital hybridization between C-Ni promoted a large negative shift of the dband center of Ni, which was in favor of improving the HER activity of the catalyst. Moreover, the core-shell structure of carbon-coated Ni effectively protected the Ni sites and improved its catalytic stability when applied in electrocatalytic water splitting. As a result, as-prepared UV-Ni@C/NF exhibited excellent HER activity in both alkaline aqueous solution (overpotential of 309 mV at 1000 mA cm -2 ) and acidic aqueous solution (overpotential of 446 mV at 1000 mA cm -2 ). This study indicated the UV-illumination-induced defects method as a feasible strategy to precisely regulate the d-band center of Ni.
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高影响因子
THIN SOLID FILMS
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2020
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IF 2.03
Lixin Song,Piaopiao Chen,Zhaowu Li,Pingfan Du,Yefeng Yang,Ni Li,Jie Xiong
Flexible counter electrode (CE) is a key to develop flexible dye-sensitized solar cells (DSSCs). To obtain flexible CE with well electro-catalytic activity, the carbon nanotubes (CNTs) were employed to modify the flexible TiO 2 /C nanofibrous film. All the CNTs/TiO 2 /C nanofibrous film with incorporation of CNTs into TiO 2 /C nanofiber showed pleasurable flexibility. In addition, the specific surface area, the conductivity, and the electro-catalytic activity of the nanofibrous film increased as the content of CNTs increased, reaching the largest values before decreasing. The CNTs/TiO 2 /C nanofibrous film with 2% of CNTs incorporation possessed optimal electro-catalytic activity. Therefore, the conversion efficiency of the flexible quasi-solid DSSCs based on the nanofibrous film CE was greatly enhanced and the highest conversion efficiency of about 3.4% was achieved. Besides, the properties of the CNTs/TiO 2 /C nanofibrous film almost remained constant after 50 cycles with the bending radius of 1 mm and the twisting angle of 10π, implying that it exhibited excellent bending stability and twisting stability. The flexible CNTs/TiO 2 /C nanofibrous film has a huge potential in flexible devices.
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高影响因子
ACS Applied Energy Materials
·
2022
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IF 6.959
Yuanchao Li,Baoyan Xing,Zhenguang Wang,Huishuang Zhang,Yanyan Liu,Jianchun Jiang,Shuting Yang,Baojun Li
The construction of an ionic/electronic conducting network is crucial for achieving satisfactory electrochemical performances of LiMnPO4 materials because of their low conductivity and the dissolution of Mn2+. Herein, a hierarchical LiMn0.8Fe0.2PO4/C composite comodified with Li3PO4 and graphite is synthesized via a facile solid-state method combined with freeze drying. The ionic conductor Li3PO4 in situ generated can improve the lithium-ion conductivity and inhibit the reaction of Mn ions with electrolytes. An electronic conducting network is formed through the secondary coating graphite and the residual carbon in situ created within the grain boundaries of LiMnPO4 nanocrystallites. Taking advantage of the synergy effect, the Li3PO4 and graphite comodified LiMn0.8Fe0.2PO4/C material yields an initial discharge capacity of 150 mA h g–1at 0.1 C, a high-rate reversible capacity of 136 mA h g–1at 5 C, and a long-term capacity retention of 91.6% after 500 cycles at 2 C. The design strategy provides a significant inspiration for the development of high-performance cathode materials with practical application.
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Applied Sciences-Basel
·
2019
·Vol. 9
·期 5
·956
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IF 2.217
Huifeng Shi,Xianqiang Liu,Rui Wu,Yijing Zheng,Yonghe Li,Xiaopeng Cheng,Wilhelm Pfleging,Yuefei Zhang
In situ scanning electron microscopy (SEM) offers a good way to investigate the structural evolution during lithiation and delithiation processes. In this paper, the dynamical morphological evolution of 3D-line-structured/unstructured Si/C composite electrodes was observed by in situ SEM. The investigation revealed the microstructural origin of large charge capacity for 3D-line-structured anodes. Based on this proposed mechanism, a coarse optimization of 3D-line-structured anodes was proposed. These results shed light on the unique advantages of using an in situ SEM technique when studying realistic bulk batteries and designing 3D electrode structures.
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ChemElectroChem
·
2018
·Vol. 5
·期 23
·3708-3716
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IF 4.446
Nanxiang Feng,Kaixiong Xiang,Li Xiao,Wenhao Chen,Yirong Zhu,Han Chen
Li 1.1 V 0.9 O 2 /C microspheres with isomeric core-shell structure were synthesized by a rapid cooling and subsequent evaporative assembly approach. The prepared Li 1.1 V 0.9 O 2 /C microspheres were characterized by X-ray diffraction (XRD), Raman spectroscopy, scanning electron microscopy (SEM) including elemental mapping analysis, and transmission electron microscopy (TEM). The core-shell Li 1.1 V 0.9 O 2 /C microspheres display identical composition but distinct texture of cores and shells, which herein is described as isomeric structure. Amorphous carbon nanodots are uniformly dispersed in the crystalline Li 1.1 V 0.9 O 2 matrix in the core. In the shell however, Li 1.1 V 0.9 O 2 nanoparticles are embedded in an amorphous carbon network. The Li 1.1 V 0.9 O 2 /C microspheres are tested as active material for anodes in lithium-ion batteries, and exhibit an excellent reversible capacity of 295 mAh g −1 , high capacity retention of 98 % after 100 cycles at 0.2 C and 95 % after 500 cycles at 2 C rate, and deliver wonderful rate capability of 250 mAh g −1 at 5 C. Thus, the Li 1.1 V 0.9 O 2 /C microspheres with isomeric core-shell structure are promising candidates as anode material for commercial lithium-ion batteries. Graphical In a nutshell : Li 1.1 V 0.9 O 2 /C microspheres are synthesized as anode material for lithium-ion batteries. The Li 1.1 V 0.9 O 2 /C microspheres display identical composition but distinct texture of cores and shells, which herein is described as isomeric structure. As anodes in lithium-ion batteries, the microspheres exhibit excellent overall electrochemical performance, rendering this material as promising candidate for the use in commercial lithium-ion batteries.
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