CHEMICAL ENGINEERING JOURNAL
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2025
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IF 13.2
Shasha Wei,Yayun Zheng,Jianfeng Liu,Jitao Shang,Fei Lv,Tong Yang,Zhaofu Zhang,Yan Xiong,Qiu He,Yan Zhao
To address the severe challenges of sluggish reaction kinetics and shuttle effects in lithium-sulfur (Li–S) batteries, this study ingeniously employed an efficient microwave-assisted (MA) strategy to rapidly synthesize the MXene–NiSe 2 @C (denoted as MA MX–NiSe 2 @C) heterostructure, serving as a sulfur host material. This method offered key benefits such as rapid and uniform heating, along with high energy efficiency. Theoretical simulations validated that the MXene–NiSe 2 heterostructure interface promoted the electron transfer processes, enhanced polysulfides adsorption, catalyzed the multi-step reduction of sulfur, and significantly reduced the energy barrier for Li 2 S decomposition. Electrochemical experiments demonstrated that MA MX–NiSe 2 @C notably improved Li–ion diffusion kinetics, accelerated sulfur redox reactions, and effectively mitigated shuttle effects. As a result, Li–S batteries based on the MA MX–NiSe 2 @C cathode exhibited a high initial capacity of 1222 mA h·g −1 at 0.1C, enhanced rate performance of 619 mA h·g −1 at 2C, and remarkable cycling stability. Even after 1000 cycles at a high 2C rate, the average capacity decay rate per cycle remained at only 0.054 %. This efficient synthesis method for MXene–transition metal selenide electrocatalysts, coupled with a thorough investigation of their adsorption and catalytic mechanisms in the intricate multiphase electrochemical reactions of Li–S batteries, provides strong support for the ongoing advancement of Li–S battery technology.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2025
·
IF 3.9
Lan Wang,Qianqiao Wang,Jianming Li,Xiaoliang Wu,Xiaobin Fan
Transition metal phosphides and selenides hold immense promise for advancing energy storage technologies. However, sluggish reaction kinetics and limited rate performance present major challenges to large-scale energy storage. Herein, a highly tunable metal–organic framework (MOF) template was employed to design CoNiP@CoNiSe through a strategy that integrates both nanostructures and heterostructures. The nanosheet structure enables rapid electron and ion transport while providing abundant electroactive sites, which in turn improves electrical conductivity and specific capacity. Furthermore, the heterostructure between CoNiP and CoNiSe optimizes the electronic structure of the host material, facilitating OH– adsorption and desorption, accelerating electron transfer and enhancing the efficiency of redox processes. Benefiting from the structural advantages and synergistic effects, the obtained CoNiP@CoNiSe electrode showcases a high specific capacity of 931 C g–1, an ultrafast rate capacity (652 C g–1 at 30 A g–1, 70% retention) and outstanding long-term cycling durability, with a capacity retention of 83% after 10,000 cycles. Beyond that, when configured in an asymmetric supercapacitor setup as CoNiP@CoNiSe//AC, it attains a notable energy density of 47.3 W h kg–1, coupled with a robust power density of 266.7 W kg–1. Moreover, the configuration maintains an impressive 78% of its capacitance even after enduring 10,000 cycles. This innovative approach to heterostructure construction offers a valuable blueprint for elevating the electrochemical performance of transition metal-based electrodes in supercapacitor applications.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Shuaiqiang Liu,Yu Li,Yan Yue,Huazhao Yang,Chuanmin Ding,Junwen Wang,Donghong Duan,Qinbo Yuan,Xiaogang Hao,Shibin Liu
Development of low-cost, efficient, and stable oxygen evolution electrocatalysts is crucial for the conversion and storage of renewable energy. Therefore, an effective integrated heterostructure catalyst is needed to achieve a lower overpotential during oxygen evolution process. In this paper, cobalt-zinc bimetallic MOF precursors are used as templates to prepare bimetallic cobalt-based selenides with good oxygen evolution catalytic activity and stability on carbon fiber paper. Due to the high specific surface area and porous structure of the coupling structure of nanorods and polyhedra, and the strong electronic coupling between CoSe 2 and ZnSe on nanorods. CoSe 2 -ZnSe/CP exhibits excellent electrocatalytic activity in 1 M KOH solution. It only requires an overpotential of 275 mV to reach the current density of 10 mA cm -2 , and the Tafel slope is 68.9 mV dec -1 . In addition, after 12 h of continuous operation of CoSe 2 -ZnSe/CP, the activity decay of the catalyst is negligible. This work provides a method for the design of heterogeneous bimetallic selenide integrated oxygen evolution electrocatalysts.
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ACS Applied Nano Materials
·
2024
·
IF 5.3
Tiewei Zhao,Guoqing Feng,Lingling Zhou,Xin Wang,Xiaoqin Li,Feng Jiang,Huiyu Li,Yongsheng Liu,Qing Yu,Haijing Cao,Yan Xu,Yanyan Zhu
High-capacity SnSe2 cathode materials combine the advantages of conversion and alloying reactions, showing great prospects in supercapacitors. However, they have poor cycling performance and low electronic conductivity. To effectively improve their electrochemical performance, a bimetallic selenide heterostructure was constructed and a three-dimensional graphene (3DG) carbon layer was encapsulated. 3DG increases the specific surface areas of the material, stabilizes the internal structures, and promotes the reaction kinetics. The obvious lattice distortions and mismatches at the ZnSe–SnSe2 heterointerfaces generate a large number of crystal defects and active sites for the adsorption/desorption of OH– ions, which is beneficial for the insertion and extraction of ions during the cycling processes and further enhances the electronic conductivity of the electrode material. Benefiting from these two strategies, 3DG/ZnSe–SnSe2 exhibits a high specific capacity of 1515.2 F g–1 at 1 A g–1 and maintains a capacity retention rate of 90.1% after 3000 cycles at 5 A g–1. Furthermore, the asymmetric supercapacitor 3DG/ZnSe–SnSe2//AC assembled with activated carbon (AC) exhibits excellent electrochemical performance, demonstrating an energy density of 25.3 Wh kg–1 at 750 W kg–1 and a remarkable capacity retention rate of 91.3% after 20,000 cycles at 5 A g–1.
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Matter
·
2024
·
IF 17.3
Yizheng Tan,Yiheng Dai,Peng Zhao,Cheng Liu,Huaping Xu
Modular strategy is specialized in universality, compatibility, and simplicity. Although previous strategies still rely on highly customized processes, our research uses modular design to improve the simplicity and compatibility of shape programming. The module we used has a predefined hexagonal shape, which is mass-producible and can be transferred to a 2D substrate to produce controllable deformation in situ through nonpattern stimuli. This process can be finished in seconds due to the great responsiveness of diselenide bonds and can be applied to different substrates for actuation and origami self-folding. Our research enables modular shape programming strategy without using any patterned stimuli and reveals the principle of how simple shape design of modules determines the pattern of stress, opening a new avenue for stress manipulation and shape programming.
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ACS Applied Energy Materials
·
2024
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IF 5.4
Lida Jia,Wenjing Ai,Jie Gao,Jia-Chen Guo,Hui Ruan,Lei Miao,Chengyan Liu
Screen printing is a promising technology to realize the large-scale production of flexible thermoelectric films, and Ag2Se is considered as the upcoming generation of room-temperature N-type thermoelectric materials that can substitute N-type Bi2Te3-based alloys. However, since the reported screen-printed Ag2Se-based flexible films were not properly sintered, their thermoelectric performance is far from satisfactory. In this work, hot pressing technology is applied to sinter the nylon-supported flexible Ag/Ag2Se thermoelectric films, and the carrier transport characteristics and power factor of the films were optimized by adjusting the hot pressing pressure and duration. For the film hot-pressed with 40 MPa and 10 min, a high power factor of 3002.14 μWm–1K–2 has been achieved at 303 K. This film also shows an excellent flexibility, and with a bending radius of 1.5 cm, the internal resistance of the film changes little after being bent 500 times. This work provides a feasible idea for improving the thermoelectric performance of Ag2Se-based films prepared by screen printing.
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APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Ye Liu,Qi Luo,Kunting Lei,Shaoxiong Liu,Xuexue Li,Jianjun Xia,Siwei Zhong,Mingyang Xie,Zhifeng Huang,Li Liu
Low operating voltage, high theoretical capacity conversion alloyed anodes ideal for potassium ion anodes. However, how to address the structural deformation and volume expansion of the changed alloyed materials throughout the reaction process is a crucial topic. A novel nitrogen-doped graphene-decorated FeSe x -Sb 2 Se 3 /C nanofibers (FeSbSe-NGCNFs) composite is synthesized by adding dicyandiamide (DCDA) during electrospinning. Benefiting from porous one-dimensional nanostructure, graphene-decoration and rich nitrogen doping, the best electrochemical performance is shown by FeSbSe-NGCNFs when used as an anode in PIBs. FeSbSe-NGCNFs provide a reversible discharge specific capacity of 279.9 mAh/g at 100 mA g −1 after 100 cycles with a capacity retention of 87.6 %, in addition to a high capacity of 169.9 mAh/g at a high current of 3000 mA g −1 . After 1000 cycles, the composite retained 115.8 mAh/g of capacity at 1000 mA g −1 . The main causes of these exceptional cycling multiplicity properties are the porous structure that produces more carbon defects and active sites, increasing the amount of storage capacity for K + and speeding up K + transport and electron transfer, as well as the graphene nanosheet structure that enhances electrical conductivity and increases its specific surface area. Therefore, PIBs might benefit from the developed FeSbSe-NGCNFs as anode material.
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ACS Sensors
·
2025
·
IF 9.1
Xiaolong Sun,Yue Hou,Zheng Zhu,Qianfeng Ding,Wenjie Zhou,Zhanglong Xia,Sijia Yan,Yong Liu,Qingqing He,Yang Yang,Ziyu Wang
Thermoelectric textiles have garnered significant attention in energy harvesting and temperature sensing due to their comfort and reliable long-term power generation capabilities. However, existing thermoelectric textiles rarely realize antibacterial, high output performance, and sensing capabilities simultaneously. Here, we present a facile and scalable method for fabricating n-type silver selenide (Ag2Se) cotton threads with exceptional antibacterial, high power output, and advanced sensing capabilities. The Ag–Ag2Se segmented structures are prepared using the segmented selenization method. Subsequently, a thermoelectric textile consisting of 50 pairs of p–n legs is fabricated, which can generate a power density of 500 μW m–2 at a temperature difference of 30 K, and it can provide an output voltage of 24.7 mV when worn on the arm at room temperature. The textile-based sensor exhibits temperature detection (0.7 K) and a response time (2.49 s). Integrating Ag2Se cotton threads onto textiles enables the utilization of multipixel touchpads for writing and communication. Additionally, these sensors can be incorporated into gloves to accurately detect the surrounding objects’ temperatures. This thermoelectric cotton thread not only facilitates energy harvesting but also establishes a solid foundation for widespread application in multifunctional textile electronics.
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Materials
·
2024
·Vol. 17
·期 10
·2292
·
IF 3.1
Linghong Wu,Juan Shen,Bo Jin
Transition metal selenides have high theoretical capacities, making them attractive candidates for energy storage applications. Here, using the microwave-absorbing properties of the materials, we designed a simple and efficient microwave-assisted synthesis method to produce a composite made of nanospheres Ni0.5Co0.5Se2(NCSe) and highly conductive, stable Ti3C2TxMXene. The Ni0.5Co0.5Se2/Ti3C2Txcomposites are characterized via scanning electron microscopy, X-ray diffraction, cyclic voltammetry, and electrochemical impedance spectroscopy. The findings indicate that 3D Ni0.5Co0.5Se2bimetallic selenide nanospheres were uniformly loaded within the few-layer Ti3C2TxMXene wrapper in a short period. The optimal NCSe/Ti3C2Tx−2 electrode can demonstrate a specific capacitance of 752.4 F g–1at 1 A g–1. Furthermore, the asymmetric supercapacitor combined with activated carbon maintains a capacitance retention of 110% even after 5000 cycles. The method of directly growing active substances on few-layer Ti3C2TxMXene will provide inspiration for the manufacture of high-pseudocapacitance supercapacitors.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Qianqian Fu,Kunlun Nie,Min Wang,Xianguo Ma,Jianwei Ren,Mengqi Cui,Hui Wang
Efficient and cost-effective oxygen evolution reaction (OER) catalysts are crucial for advancing energy conversion and storage technologies such as water electrolysis and metal-air batteries. However, the performance assessment of catalysts has been complicated by the diversity of material microstructures and electrochemical testing variables. In this study, the solvothermal and chemical vapor deposition methods were employed to synthesize several NiCo-based compounds with similar microstructures but incorporating different non-metal atoms (O, P, S, and Se). By ensuring a comparable density of electrochemically active sites, the influence of non-metal atoms on the electronic structure and catalytic activity were investigated. Characterization and molecular orbital theory confirmed that electronic coupling enabled the redistribution of atomic charge transfer in the NiCo 2 S 4 (NCS) sample with bridging O 2- and S 2- . Electrochemical tests of the optimal catalyst in 1 M KOH demonstrated a lower Tafel slope (111 mV dec −1 ) and higher conductivity. The catalyst required only a 353 mV overpotential to achieve 100 mA cm −2 , and the subsequent chronoamperometry displayed a 98 % retention rate over 48 h. Such insights into the selection of non-metal atom provides a pathway for designing and preparing efficient catalysts.
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Advanced Healthcare Materials
·
2024
·
IF 10
Jia He,Wei Zhang,Yuyu Cui,Liang Cheng,Xu-Lin Chen,Xianwen Wang
Free radicals are secreted following skin damage and cause oxidative stress and inflammatory reactions that increase the difficulty of wound healing. In this study, copper-based nanozyme Cu 2 Se nanosheets (NSs) are synthesized by an anion-exchange strategy and apply to wounds with F127 hydrogels to investigate the healing effect of this nanozyme composite hydrogels on wounds. Cu 2 Se NSs have a large number of catalytically active centers, are simple to synthesize, require few reaction conditions and have a short synthesis cycle. In vitro experiments have shown that Cu 2 Se NSs possess superoxide dismutase (SOD)-like activity and nitrogen radical scavenging activity and promote angiogenesis and fibroblast migration. The doping of Cu 2 Se NSs into the F127 hydrogel does not have a significantly affect on the properties of the hydrogel. This hybridized hydrogel not only adapts to the irregular and complex morphology of acute wounds but also prolongs the duration of nanozyme action on the wound, thus promoting wound healing. Transcriptomic analysis further reveals the potential therapeutic mechanism of the Cu 2 Se/F127 hydrogel in promoting acute wound healing. Animal experiments have shown that the Cu 2 Se/F127 hydrogel has good biosafety. The Cu 2 Se/F127 hydrogel provides an innovative idea for the development of hydrogel dressings for the treatment of acute wounds.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Ming Xu,Yu Ma,Lei Wang,Shu Huang,Liming Chen,Rong Liu,Zikun Li,Guohui Yuan
Transition metal selenides (TMS) have been used to prepare hundreds of electrode materials for ion batteries due to their superior theoretical capacity, but have been repeatedly limited by the sluggish reaction kinetics and the enormous volume change during the repeated charge/discharge process. Here, we report a facile strategy to fabricate organic–inorganic composites by engineering a unique chemical bonding interface between TMS and conductive polymers. For the first time, poly(3,4-ethylenedioxythiophene) (PEDOT) is utilized to encapsulate iron diselenide (FeSe 2 ) nanoparticles by in situ polymerization, and the Fe-S bonds are meanwhile formed at the interface of FeSe 2 and PEDOT. The experimental analysis demonstrates the stability of Fe-S bonds during the sodiation/desodiation process and after long cycling, which can serve as a “bridge” for fast charge transfer and also serve as a “rivet” to stabilize the composite structure. When used for sodium ion storage, the composite offers an exceptionally long lifetime of up to 17,000 loops at 10 A/g without capacity degradation. In addition, it delivers a high specific capacity of 490.4 mAh/g and retains 60 % when the current density is amplified 150 times. The assembled full cell also exhibits excellent cycling stability. This work will provide a feasible way to improve the metal oxide/sulfide/selenides for long-life ion batteries.
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