CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Jiayin Li,Wen Wen,Shuzhuo Bai,Jing Zhang,Chenyu Wu,Jintao Wu,QingQing Huang,Yalin Zhang,Chunyi Cai,Liyun Cao,Yijun Liu,Haibo Zhang,Hua Tan,Jianfeng Huang
The instability of the interfacial structure during the synthesis of iron carbodiimide (FeNCN) leads to a decline in its electrochemical performance during cycling. By depositing FeF 3 particles on the surface of FeNCN, the in-situ transformation of this FeF 3 nanolayer into a FeF 2 nanolayer effectively utilizes the discharge product Fe 0 . This process constructs a mechanically stable sandwich-structured SEI film, thereby enhancing the stability of the FeNCN electrode interface. Consequently, the FeNCN electrode exhibits a capacity of 350.54 mAh g −1 after 2000 cycles at 2 A g −1 , with a capacity retention rate of 99.54 %. This strategy provides crucial theoretical and technical insights for regulating carbodiimide-based materials to achieve stable, long-cycle performance in electrode materials.
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2025
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IF 2.1
Ruxue Yao,Yang Ge,Jiangtao Song,Fei Yuan,Yafei Guo,Tianlong Deng
The Qaidam Basin has potassium- and calcium-rich oil field brine resources at high temperatures. Since the phase diagram is a powerful tool to guide the separation and purification of inorganic chemical engineering for the development of potassium resources in oil field brine, the quaternary oil field brine system (Na+, K+, Ca2+//Cl– -H2O) and its two subsystems ((Na+, Ca2+//Cl– -H2O) and (K+, Ca2+, //Cl– -H2O)) at 338.15 K were reported for the first time by the isothermal dissolution equilibrium method. The compositions of the equilibrium solid phases were analyzed and identified by combined chemical analyzing and X-ray diffraction. The quaternary system has four crystallized regions corresponding to NaCl, KCl, KCl·CaCl2, and CaCl2·2H2O at 338.15 K, and the incongruent double salt KCl·CaCl2 occurred at 338.15 K. The study facilitates the enrichment of thermodynamic data and exploits brine-based potassium resources.
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Sustainable Energy & Fuels
·
2025
·Vol. 9
·期 4
·1062-1072
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IF 4.1
Minghui Cao,Miao Cui,Yiping Gong,Zewei Guo,Shuangqing Le,Jingyang Tian,Yuanping Jiang,Zulipiya Shadike,Chong Lin
The unstable anionic redox reactions (ARRs) in high-energy Na layered cathode materials result in sluggish ARR kinetics and inadequate structural stability, ultimately leading to rapid capacity degradation and unfavorable rate capabilities. In this work, a high entropy layered oxide P2-Na0.66Mn0.6Li0.1Ti0.1(MgAlCuZn)0.05O2 (NMLTMACZ), was synthesized using a solid-state reaction method to achieve a stable phase structure. Such a novel NMLTMACZ cathode with O redox exhibits an exceptionally high initial reversible capacity of 245.56 mA h g−1 at 0.05C, with an unsatisfactory capacity retention of ∼58.56% after 100 cycles at 0.1C. However, the P2-NMLTMACZ cathode shows an outstanding rate capacity of 147.18 mA h g−1 and superior cycling stability with ∼84.63% capacity retention after 100 cycles at a high rate of 1C. The significant improvement in high-rate performance can be attributed to the robust structure, fast Na+-ion transport, and O-redox dynamics of the NMLTMACZ cathode, as evidenced by electrochemical impedance spectroscopy (EIS), ex situ X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) experiments. This study provides a new perspective on the design of high-capacity cathode materials with highly reversible ARR, demonstrating enhanced high-rate performance through rational lattice modulation.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2025
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IF 8.3
Shibo Wu,Jingrui Cao,Yang Zhou,Jiahao He,Jiangjie Zhou,Muslum Demir,Hongye Yang,Zaizai Tong,Pianpian Ma
High-entropy perovskite oxides, an emerging electrocatalytic electrode material, integrates the distinctive features of high-entropy materials and perovskites, offering significant potential in electrocatalysis. While adjusting the B-site elements has been a widely adopted approach for modulating the electrocatalytic activity of HEPs, there was a notable lack of systematic investigations into the role of A-site ions in regulating their electrocatalytic performance. To overcome this deficiency, in the present study, La 1-x Na x (CrMnFeCoNi) 1/5 O 3 HEPs were synthesized using carbon nanotubes-based sacrificial template method. It was found that the Na substitution at the A-site not only significantly reduced the synthesis temperature but also facilitated the preservation of carbon nanotubes. This retention contributed to the formation of a three-dimensional network structure, exposing a greater number of active sites. The Na modification induced significant valence fluctuations at the B-site and tailored the oxygen vacancy concentrations, enhancing the synergistic "cocktail effect" among the various metal atoms. Furthermore, the introduction of Na stimulated the formation of surface M-OOH species, which serve as active intermediates to enhance OER activity. As a result, the Na-modified HEPs demonstrated exceptional OER performance compared to their parent phases. Among these, La 0.6 Na 0.4 (CrMnFeCoNi) 1/5 O 3 (L6N4-5M) sample exhibited a lower overpotential of 313 mV at a current density of 10 mA cm −2 and a Tafel slope of 47.4 mV dec −1 . Additionally, the A-site Na modification strategy and the in-depth investigation of the OER mechanism provide valuable insights for the future design and development of high-performance HEP electrocatalysts.
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Materials Today Communications
·
2025
·
IF 4.5
Wujie Ge,Yuanxiang Fu,Chaonan Wang,Lirong Yan,Qi Feng,Bing Yan,Xiang Li
The high-nickel cathode material LiNi 0.865 Co 0.095 Al 0.04 O 2 (NCA) has garnered significant attention due to its high energy density and cost-effectiveness in production. However, this material is also prone to rapid capacity degradation, primarily due to phase transitions occurring during the redox process. In this paper, the co-modification with Na and B cations is employed to stabilize the lattice structure and enhance the electrochemical performance of the NCA material. It can be found that the incorporation of Na and B cations in the lattice can reduce cation mixing, expand the Li-layer spacing and improve crystal stability, thereby increasing the specific capacity and cyclic stability of the NCA material. Specifically, the co-doped NCA-2 sample exhibits a specific capacity of 202.1 mAh/g at 0.1 C and maintains a capacity retention of 78.75 % at 1 C after 300 cycles, representing a substantial improvement over the pristine material (187.2 mAh/g and 61.68 % capacity retention). Moreover, at a current density of 10 C, the co-doped NCA-2 sample demonstrates a high specific capacity of 133.9 mAh/g, compared to 110.1 mAh/g for the pristine material. The Na/B co-doping strategy presented in this study offers a straightforward method to improve the cyclability and rate behavior of cathode materials, highlighting its potential for commercial applications.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Zhouxin Chang,Wenli Guo,Chen Yang,Changshen Ye,Qinglian Wang,Bochen Li,Yaodong Xiao,Jie Chen,Ting Qiu
The semiconductor industry’s rapid evolution necessitates ultra-high-purity N-methyl pyrrolidone (NMP) as an essential electronic-grade solvent. The development of an efficient coordination material to reduce trace metal ions, particularly Na and K metal ions, to below 1 ppb in NMP solution is a significant challenge. To address this, a novel coordination material, St-DVB-g-ACE, has been developed for the removal of Na and K metal ions from NMP. The material was synthesized by grafting 4′-aminobenzo-15-crown-5-ether onto a strong acid gel resin. The resulting St-DVB-g-ACE-3 exhibited excellent coordination performance for Na and K metal ions, with maximum Langmuir adsorption capacities reaching 20,000 μg/g and 33,333 μg/g, respectively. Of particular interest was the ability of St-DVB-g-ACE-3 to reduce all trace metal ions in industrial-grade NMP to below 1 ppb within a fixed bed column, achieving the stringent requirements for electronic-grade NMP at the G3 level. Additionally, the absorbent enhances the purity of NMP from 99.82 % to 99.84 %, indicating that the material is not dissolved and can exist stably in NMP. Its excellent recyclability and reproducibility make it highly practical for industrial use. Density functional theory (DFT) simulation, complemented by spectral analyses, revealed the interaction force and thermodynamic properties between Na and K metal ions and crown ether ring, and illustrated the interaction between anionic sulfonic group (−SO 3 − ) and metal ions. The prepared resin-grafted crown ether adsorbents are highly effective in the thorough removal of trace metal ions from NMP solution, offering a novel and effective method for the production of electronic-grade NMP.
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WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
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2025
·Vol. 41
·期 10
·1-12
·
IF 4.2
Sun Ying,Hua Qijing,Cai Yinglin,Dong Yamin,Xiao Yiwen,Bao Jianyin,Zhu Du,Liu Bin,Gao Boliang
Metal ions critically regulate microbial secondary metabolism. This study investigated the regulatory roles of metal ions in Shiraia sp. Slf14, an endophytic fungus with exceptional perylenequinone (PQ) biosynthesis capacity. Among eight ions tested, Na⁺, K⁺, Mg²⁺, and high Ca²⁺ (1.0 g/L) markedly enhanced PQ yields, while Mn²⁺, Cu²⁺, Zn²⁺, and Fe³⁺ (≥ 0.5 g/L) exerted strong inhibition. Na⁺ emerged as the optimal elicitor, boosting production to 504.82 ± 8.62 mg/L (+ 57.96%) at 1.0 g/L without cytotoxicity. Na⁺ exhibited concentration- and time-dependent biphasic regulation. Critical innovation was achieved at 4 g/L Na⁺ added on day 4 (early-log phase), maximizing total PQ yield (1836.95 ± 45.21 mg/L, 5.75 × control), while concentrations > 12 g/L or late addition (≥ day 8) suppressed biosynthesis. Component-specific sensitivities were observed among five PQs. Furthermore, Na⁺ activated the calcineurin pathway: stress-induced Cam/Cna triggered calcineurin-mediated Crz1 nuclear translocation, upregulating key PQ genes ( pksI , omef , hydroxylase ). Concurrent induction of ena1 (Na⁺ exporter) and Ca²⁺-ATPase maintained ion homeostasis. In conclusion, our work pointed out monovalent cations (Na⁺/K⁺) as potent PQ biosynthetic stimulators in filamentous fungi and establish the Na⁺-calcineurin-PQ axis, offering a scalable strategy to overcome production bottlenecks in pharmaceutical PQ manufacturing.
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PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
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IF 9.7
Xueying Xiao,Zhaoqing Jin,Baochun Wang,Yunzhen Ye,Ao Xu,Xintai Xie,Mengxian Pei,Jianhao Lu,Weikun Wang,Yaqin Huang
Rechargeable sulfurized polyacrylonitrile (SPAN)-based room temperature sodium-sulfur (RT Na/SPAN) batteries, which can operate stably at room temperature, are highly sought after due to the high coulombic efficiency, excellent reversibility and cycling stability. However, the practical battery performance of the Na/SPAN system is fundamentally limited by sluggish interfacial kinetics, particularly hindered Na + transport and electron transfer at electrode–electrolyte interface. Herein, this study addresses these challenges through a low-temperature (180 ℃) polymeric carbon encapsulation strategy, which strategically constructs a polyfuran-rich amorphous carbon(AC) coating on SPAN microparticles (SPAN@AC). This synergistic mechanism operates through conjugated backbones that facilitate efficient electron transport, while the dual role of oxygen which providing strong Na + coordination and weak bonding interactions, thereby simultaneously accelerating charge transfer and ion-desolvation kinetics at the interface. These strategies effectively mitigate interfacial kinetic limitations in sodium-ion batteries, resulting in improved cycling durability and rate capability during practical battery testing. Hence, the SPAN@AC electrode delivered a reversible capacity of 400 mAh g −1 composite at 0.2 A g −1 over 500 cycles and 248 mAh g −1 composite at 1 A g −1 over 750 cycles. This study develops a new approach to enhance SPAN’s electrochemical properties, thereby establishing its viability as a high-performance cathode material for practical room temperature sodium-sulfur battery applications.
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ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Ting Liu,Li Li,Tianhao Yao,Yanni Li,Lei Zhu,Fang Li,Xiaogang Han,Yonghong Cheng,Hongkang Wang
To explore advanced anode materials with superior Li + /Na + /K + storage performances for alkaline ion batteries (AIBs), a hybrid of amorphous vanadium oxide uniformly embedded into the highly defective carbon nanofibers (denoted as VO x @CNFs) was fabricated via a facile electrospinning method followed by proper heat treatment in this work. The integrated structure synergistically combines the advantages of the amorphous VO x and the defective carbon matrices, which can not only bring abundant active sites for ion storage and multi-channels for ion diffusion, but also well accommodate the structural change induced electrode pulverization . When evaluated as anode materials for AIBs, the optimized VO x @CNFs demonstrate excellent alkaline ion storage performances with high-specific capacities, long-cycling life and high-rate capabilities, delivering a Na + storage capacity of 260 mAh g −1 at 1.0 A g −1 after 1000 cycles, a Li + storage capacity of 556 mAh g −1 at 0.5 A g −1 after 500 cycles, and a K + storage capacity of 198 mAh g −1 at 0.5 A g −1 after 400 cycles.
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FUEL
·
2022
·
IF 8.035
Quanwang Zhong,Junwei Liao,Qian Zhang,Songbai Qiu,Qingwei Meng,Xiaoping Wu,Tiejun Wang
Developing biomass-derived fuels is a highly competent approach towards the current serious carbon emission issue caused by fossil fuel. The direct upgrading of the aqueous bio-ethanol to higher alcohols as diesel blending and bio-jet fuel precursors showed great potential in techno-economic. In this work, a water-tolerant Na-doped porous carbon encapsulated Ni nanocomposite was fabricated by direct pyrolyzing of Na-containing organic precursors for direct upgrading of aqueous ethanol. The higher alcohols yield of 35.0 C-mol% with C4-C7 selectivity of 51.9% and C8-C16 selectivity of 33.8% were achieved. The C4-C7 alcohols showed the excellent inter-miscibility with diesel at the 0–90% blending proportion. The C8-C16 higher alcohols with iso/n-OH (isomerized/normal alcohol) ratio of 1.86 can be directly used to produce desired jet fuel by hydrodeoxygenation treatment. Experiment and characterization results indicated that the Ni@C catalyst could spontaneously transfer from aqueous phase to the produced oil (higher alcohols) phase. The coupling of phase-transfer and basic sites of Ni@C-NaGlu effectively promoted the secondary C C coupling of higher alcohols to form C8-C16 alcohols. In general, this work provides a novel feasible approach to produce higher alcohol diesel blending and bio-jet fuel precursors from widely available bio-ethanol.
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MATERIALS RESEARCH BULLETIN
·
2023
·
IF 5.4
Zhiwei Li,Zhengxiang Bian,Yurong Ren,Zhihui Chen,Jiujun Xu
(1-x)(0.9Ba 1.003 Ti 0.97 Ca 0.03 O 3 –0.1(Bi 0.51 Na 0.47 ) 0.94 Ba 0.06 TiO 3 )-xNa(Nb 0.85 Ta 0.15 )O 3 ( x = 0.03–0.15) ceramics were designed and fabricated through a bidirectional optimization strategy using traditional solid reaction method. The results revealed that the introduction of Na(Nb 0.85 Ta 0.15 )O 3 increased the vacancy concentration at the A site , conducing to improved polarization and reduced grain size. The substitution at the B site disrupted the long-range ordered ferroelectric domains and generated polar nanodomains, leading to enhanced relaxation behavior. The optimum energy storage density of 3.57 J/cm 3 and efficiency of 87.5% were simultaneously achieved under the electric field of 220 kV/cm in the sample with x = 0.09. Moreover, it also exhibits extremely high-power density (∼57 MW/cm 3 ), ultrafast discharge time (∼103 ns), high discharge density (1.35 J/cm 3 ), along with excellent temperature (30‒120 °C) and frequency stability (1‒100 Hz) under the equivalent electric field of 120 kV/cm. This novel design strategy provides theoretical guidance for the development of advanced electrical energy storage devices.
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Journal of Materials Chemistry A
·
2018
·Vol. 6
·期 21
·9922-9929
·
IF 9.931
Yang Chen,Bohan Shan,Chengyin Yang,Jiangfeng Yang,Jinping Li,Bin Mu
Two environmentally friendly and efficient synthesis methods, NH3-assisted synthesis and solvent-evaporated conversion, have been developed for the synthesis of a series of M(NA)2 (M = Zn, Co, Cu, Cd; NA = nicotinate) flexible MOFs. The two-dimensional M(NA)2 (M = Zn, Co) and three-dimensional M(NA)2 (M = Cu, Cd) materials exhibit peculiar structural transformation. These frameworks can be obtained from dehydration of M(NA)2(H2O)4 (M = Zn, Co, Cu, Cd) which are zero-dimensional supramolecular structures. Interestingly, the structural transformation of M(NA)2 (M = Zn, Co, Cd) is reversible after liquid water adsorption. Due to the flexible structure of these MOFs, they exhibit abnormal NH3 adsorption properties. The two-dimensional Zn(NA)2 shows a gate-opening behavior for NH3 adsorption. Its layers opened at a pressure of 0.22 bar in the first cycle, resulting in a two-step NH3 uptake with a capacity of 10.2 mmol g−1 at 1 bar. The gate-opening pressure shifted to a lower value with cycles. Co(NA)2 has a huge NH3 uptake of 17.5 mmol g−1, which is top-ranking among the reported values. For the NH3 adsorption over Cu(NA)2 and Cd(NA)2, the adsorption rates increase and adsorption equilibrium is achieved faster after three cycles. Their maximum capacity at 1 bar is 13.4 and 6 mmol g−1, respectively. More importantly, all MOFs can be regenerated under vacuum and heating conditions of 150 °C for 70 min, and they all retained the capacity. The advantages of environmentally friendly synthesis, large adsorption capacity, and regenerable properties indicate that M(NA)2 (M = Zn, Co, Cu) are promising candidates for NH3 adsorption.
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