JOURNAL OF POWER SOURCES
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2026
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IF 7.9
Yan Wang,Hanbo Wang,Dongyu Zhu,Yahui Xu,Ziming Wang,Yiduo Li,Yumei Tian,Haiyan Lu
The practical application of carbon and its analogues has been impeded by their high cost and the complexity of preparation methods, thereby driving significant interest in identifying cost-effective alternatives for future energy storage applications. Biomass-derived carbon has emerged as promising substitutes for graphene in energy storage devices. However, enhancing their specific surface area and electrochemical performance remains a considerable challenge. We developed a novel approach by utilizing thiourea and sodium hypophosphite as activators and co-dopants to synthesize sulfur and phosphorus co-doped porous carbon derived from biomass waste. This strategy effectively facilitated pore structure rearrangement and introduced a synergistic combination of non-metallic dopants, significantly improving the electrochemical performance for supercapacitors by adjusting the ratio of co-dopants. The resulting sample exhibited a hierarchical porous structure with superior specific surface area (2691.85 m 2 g −1 ) and abundant micropores, endowing a high capacitance (323.5 F g −1 at 1 A g −1 ) and a superb cycling stability (100.37 % after 10,000 cycles). Furthermore, the assembled button-type supercapacitors yielded a remarkable energy density of 31.8 Wh kg −1 coupled with outstanding cyclic stability, retaining approximately 92.17 % after 25,000 cycles. These promising results exemplified a sustainable and cost-effective approach to design electrode materials for high-performance supercapacitors with extended cycle life.
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ANALYTICA CHIMICA ACTA
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2026
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IF 6.1
Congkui Tian,Xiaoning Chu,Changsen Man,Yaqian Zhang,Zhihao Dang,Zhuo Liu,Baoping Qi,Yu Liu
Background Leucine aminopeptidase (LAP) is a promising biomarker for the detection and diagnosis of liver diseases encompassing liver cancer and liver injury. Existing assays for LAP activity have limitations, as most of them rely on substrates that are cumbersome to synthesize and fail to amplify the detection signal. Results Initially, L-pAP was synthesized to serve as a substrate for LAP through the condensation of p -aminophenol (pAP) with leucine. LAP triggered the hydrolyzation of L-pAP into pAP, which then reduced colourless Fe 3+ -ferrozine to purple Fe 2+ -ferrozine. Upon addition of tris(2-carboxyethyl)phosphine, the oxidation product p -quinone imine was quickly converted to pAP, which then continuously reduced Fe 3+ -ferrozine to produce substantial amounts of Fe 2+ -ferrozine that could be readily detected as purple using a commercial microplate reader or visual observation. The findings showed that the redox-cycling process greatly lowered the detection limit of LAP to 0.1 U/L, representing 2 orders of magnitude improvement over conventional detection methods. Moreover, we further expanded the feasibility of the proposed process to the assessment of LAP activity in cancer cell lysate. Significance and novelty This work introduces a novel LAP detection method characterized by simple substrate synthesis and high sensitivity. The detection limit of LAP was reduced through the signal amplification strategy of redox cycling. Our research findings provide a powerful chemical tool for LAP detection, offering enormous potential for future biomedical research and diagnosis of related diseases.
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LANGMUIR
·
2026
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IF 4.4
Changning Ran,Yizhou Liang,Boyu Li,Yuhan Xing,Xi Chen,Chuanyezi Cai,Jiacheng Guo,Gengqi Tong,Jichen Sun,Youyuan Zheng,Huimin Liao,Jianjun Zhang
Poly(vinylidene fluoride) (PVDF)-based ferroelectrics are essential for film capacitors, yet their high dielectric loss and low charge/discharge efficiency caused by ferroelectric hysteresis severely limit practical applications. Linear polypropylene (PP), in contrast, dominates the commercial capacitor market due to its high efficiency and low loss, prompting extensive efforts to combine the advantages of both polymers. However, existing approaches often rely on costly molecular design or complex film-forming processes, conflicting with the demands for low-cost and miniaturized electronic devices. Here, we report a solution-based and scalable strategy that avoids high-temperature melt processing to fabricate a hybrid dielectric film comprising a P(VDF-HFP) matrix, embedded PP chain segments, and core–shell structured BT@SiO2 nanoparticles. Polypropylene chain segments are embedded into the poly(vinylidene fluoride-co-hexafluoropropylene) [P(VDF-HFP)] matrix via solution blending, forming molecularly interpenetrating interfaces that effectively suppress ferroelectric hysteresis. Core–shell structured BT@SiO2 nanoparticles are simultaneously incorporated to further enhance dielectric properties. The resulting P(VDF-HFP)-PP/BT@SiO2 nanocomposite films exhibit a high dielectric constant of 46, a charge/discharge efficiency consistently exceeding 80%, and a maximum energy density of 3.92 J/cm3. Phase-field simulations further reveal that the P(VDF-HFP)-PP/BT@SiO2 architecture with graded dielectric constants mitigates local electric field concentration, accounting for the excellent breakdown performance. Unlike conventional high-temperature melt processing or complex molecular design, this work offers a low-cost and scalable route that avoids high-temperature melt processing to high-performance polymer dielectrics, demonstrating that combining molecular interpenetration with core–shell filler engineering provides a promising pathway for next-generation capacitors.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2026
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IF 9.2
Jian Tang,Shuhui Duan,Jingwen Luo,Yangyang Ding,Geng Gao,Bin Yang,Yaochun Yao
While constructing hierarchical structures is an effective strategy to boost hydrogen evolution reaction (HER) activity, most existing synthesis routes still rely on high-temperature treatments. Herein, a novel 1D/2D/0D hierarchical NiMoO 4 /Ni(OH) 2 @P–Ni electrocatalyst is fabricated on nickel foam via a simple and mild two-step method involving hydrothermal synthesis and subsequent electrodeposition. The catalyst requires an overpotential of 77 mV to achieve a current density of 10 mA cm −2 for the alkaline HER and operates stably for 100 h. The high performance originates from a well-orchestrated synergy: P–Ni nanoparticles serve as highly active sites for hydrogen adsorption, while the Ni(OH) 2 component and the multi-component heterointerfaces collectively facilitate water dissociation and charge transfer. Moreover, the hierarchical structure imparts exceptional interfacial properties, including superhydrophilicity and efficient gas bubble release. This work offers a viable strategy for designing high-performance electrocatalysts by orchestrating multi-component synergy within a rationally engineered hierarchical architecture.
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LANGMUIR
·
2026
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IF 4.4
Feng Wen,Heju Gao,Qihao Wu,Chunyan Wu,Guancheng Xu,Li Zhang
The development of rechargeable zinc–air batteries is critically hindered by the sluggish kinetics of both the oxygen reduction and the oxygen evolution reaction. For advancing zinc–air battery technology. The effective design of bifunctional catalysts that efficiently facilitate both the oxygen reduction and oxygen evolution reactions is crucial for advancing the development of zinc–air batteries. Overcoming the intrinsic sluggish kinetics of oxygen electrocatalysis remains a fundamental challenge that limits the commercial viability of rechargeable zinc–air batteries. Herein, the work proposes a rational strategy to construct a three-phase heterogeneous interface: Co7Fe3/Co/Co2P@NPCNT was successfully synthesized by a two-step pyrolysis using CoFe–FF as the precursor and dicyandiamide and sodium hypophosphite as carbon, nitrogen, and phosphorus sources, respectively. The half-wave potential (E1/2) of Co7Fe3/Co/Co2P@NPCNT is 0.85 V, and the overpotential (η10) is 295 mV at 10 mA cm–2. Comparative evaluation confirms that the catalytic activity of Co7Fe3/Co/Co2P@NPCNT is superior to those of Pt/C and RuO2. The catalytic activity of Co7Fe3/Co/Co2P@NPCNT is superior to that of Pt/C and RuO2. Meanwhile, the zinc–air batteries assembled by Co7Fe3/Co/Co2P@NPCNT have an open-circuit voltage of 1.45 V, a peak power density of 130 mW cm–2, and a large specific capacity. The structure of carbon nanotubes not only facilitates the dispersion of metal nanoparticles but also increases the active sites. Moreover, the corrosion of nanoparticles by alkaline electrolyte is reduced, and the stability is enhanced. The good bifunctional catalytic activity of Co7Fe3/Co/Co2P@NPCNT can be attributed to the synergistic effect of electron transfer between the three-phase interfaces and the multicomponent active centers (alloy, phosphide, N, P-codoped carbon nanotubes). In this work, the three-phase heterogeneous interface is constructed reasonably. This unique structure improves the catalytic activity and provides a new idea for the design of bifunctional catalysts.
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SOLID STATE IONICS
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2015
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IF 2.561
Jingyun Yin,Xiayin Yao,Gang Peng,Jing Yang,Zhen Huang,Deng Liu,Yicheng Tao,Xiaoxiong Xu
The effect of solid electrolytes , i.e. Li 10 GeP 2 S 12 and Li 3.25 Ge 0.25 P 0.75 S 4 , on the rate and low temperature performances of LiNi 0.8 Co 0.15 Al 0.05 O 2 (NCA) cathode in all solid state lithium batteries is investigated. The ionic conductivities for the synthesized Li 10 GeP 2 S 12 and Li 3.25 Ge 0.25 P 0.75 S 4 at room temperature (RT) are 8.27 × 10 − 3 and 2.03 × 10 − 3 S cm − 1 , respectively. These solid electrolytes are demonstrated as electrolytes for all solid state lithium batteries containing NCA cathode for the first time. The results show that Li 10 GeP 2 S 12 based battery exhibits superior rate performance (72.3 mAh g − 1 at 1 C, RT), cycling stability (capacity retention of 87.1% after 30 cycles at 0.1 C, RT) and low temperature performance (79.2 mAh g − 1 at 0.1 C and − 10 °C), which can be ascribed to its higher ionic conductivity and lower interfacial resistance between Li 10 GeP 2 S 12 and NCA cathode. It is indicated that all solid state lithium batteries with NCA cathode and Li 10 GeP 2 S 12 solid electrolyte can realize its potential application in high power and low temperature conditions.
研究领域:
材料科学
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电化学
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能源存储
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固态离子学
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电池技术
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Journal of Energy Storage
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2023
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IF 9.4
Haidong Xie,Chunping Hou,Zeyu Yue,Lidong Zhai,Hehang Sun,Hui Lu,Jiandong Wu,Shaolin Yang,Yong Ma
SiO x has high specific capacity for lithium-ion batteries, but the rate and the cycling performances need to be further improved to satisfy the needs of the future. In this study, the C, N, P doping SiO x /G@CNP anodes are prepared by a facile ball milling and heat treatment process . The electrochemical performances of SiO x are improved by the synergistic effect of C, N, P doping. The SiO x /G@CNP-2 anode with the addition of 20 wt% phytate shows the best electrochemical performances and maintains a specific capacity of 77.45% after 150 cycles at 0.2 A·g −1 . Importantly, it exhibits a remarkable rate performance with specific capacities of 528.2 mAh·g −1 and 370.0 mAh·g −1 even at 3.0 and 5.0 A·g −1 , respectively. Artificial graphite and the carbon shell formed by the thermal decomposition of citric acid contribute to the structural stability of SiO x and improve the cycling performance of the material. Moreover, the addition of P element and high content of pyridine N accelerates the rate of Li + deintercalation, and the conductivity and ion diffusion coefficient of the material are effectively promoted, thus greatly improving the rate performance of the material. This work presented herein provides a simple and feasible method for the preparation of high-performance anode materials.
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Materials Today Chemistry
·
2023
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IF 7.3
H. Chai,R. Li,L. Gao,H. Niu,J. Jin
The phase interface properties of the p-n junction may profoundly affect its photoelectrochemical (PEC) water oxidation performance. Here, we introduced a non-conjugated polymer functional layer (poly(diallyl-dimethylammonium chloride, PDDA) between the interfaces of the p-n junction (Co 3 O 4 /Gd–Fe 2 O 3 ) to tune the interfacial properties . First, the PDDA modulates the band structure so that the composite photoanode (Co 3 O 4 /PDDA/Gd–Fe 2 O 3 ) has an enlarger band bending than the p-n junction. Then, PDDA passivates the surface trap, which synergizes with Co 3 O 4 to provide more active sites for water oxidation. Furthermore, PDDA improves the PEC water oxidation kinetics. Specifically, PDDA extracts holes and adsorbs water oxidation reactants, thus it efficiently transfers photogenerated holes to Co 3 O 4 , promoting the water oxidation reaction in the positive direction. With these positive modulations, PDDA can further enhance the PEC water oxidation performance of the p-n junction. This conceptual work provides insight into the role of the non-conjugated polymer in PEC water splitting .
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Journal of Materials Research and Technology-JMR&T
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2023
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IF 6.4
Hongyuan Zhao,Meimei Guo,Fang Li,Yu Zhou,Gan Zhu,Yunhang Liu,Qiwen Ran,Fuquan Nie,Volodymyr Dubovyk
The efficient and accurate detection of gallic acid (GA) is particularly important for human health. Herein, a simple and low-cost ultrasonic-assisted strategy was proposed for the preparation of multifunctional nanocomposite of Super-P carbon black (SPCB) nanoparticles and mesoporous silica nanoparticles (MSNs), which was used to modify the glassy carbon electrode (GCE) for the fabrication of GA electrochemical sensor (SPCB@MSNs/GCE). SPCB with pearl-chain nanostructure presented an interconnected highly conductive carbon network, which significantly improved the charge transfer efficiency. MSNs with spherical morphology and mesoporous structure exhibited uniform particle dispersion and high active surface area, which remarkably improved the surface accumulation effect of sensing electrode towards GA. Moreover, the excellent electrical conductivity of SPCB compensated for the non-conductive property of MSNs. Under the optimized condition, the electrochemical response of SPCB@MSNs/GCE sensor had a good linear relationship with GA concentration (0.5–10 μM), and the corresponding limit of detection could reach up to 4.911 nM. The fabricated nanohybrid sensor showed good reproducibility, repeatability and anti-interference property. Moreover, the satisfactory GA recoveries and RSD values were achieved for the electrochemical detection of GA in tea samples. This work provides an important reference for the highly sensitive analysis of GA in the field of food safety.
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JOURNAL OF CATALYSIS
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2023
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IF 7.3
Yue Shen,Chun Chen,Zidan Zou,Zhi Hu,Zhen Fu,Wenchao Li,Shenglong Pan,Yunxia Zhang,Haimin Zhang,Zhixin Yu,Huijun Zhao,Guozhong Wang
Exploring the interactions among doping heteroatom, carbon and metal atoms has great potential to significantly enhance the catalytic performance and can gain an insightful understanding of the heterogeneous catalysis mechanism. Here, we present an N,P co-doped carbon-coated cobalt (Co@NPC) as a highly selective and water-durable catalyst applicable to aqueous-phase hydrogenation of cinnamaldehyde, featuring a precise control of products by adjusting N and P doping. These di-heteroatoms display a synergistic effect of geometry and electrons in Co@NPC, thus can selectively reduce C O to produce unsaturated alcohols. In contrast, Co@NC without P doping is highly active, but shows significant productivity of saturated alcohols under equivalent conditions. Theoretical calculations manifest that the electronegativity difference among N, C and P atoms leads to the interaction between electrons, thus can adjust the chemical states of the active metal and enhance the catalytic performance in hydrogenation. It provides a desirable way for regulating the catalysis of heterogeneous catalysts.
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Small
·
2023
·Vol. 19
·期 30
·2300770
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IF 13.3
Shilin Zhang,Qingjie Wang,Peng Zhang,Jie Wang,Yue Li,Chang Lu,Muhammad Tariq Sarwar,Xiongbo Dong,Qihang Zhao,Aidong Tang,Liangjie Fu,Huaming Yang
To achieve a high separation efficiency of photogenerated carriers in semiconductors, constructing high-quality heterogeneous interfaces as charge flow highways is critical and challenging. This study successfully demonstrates an interfacial chemical bond and internal electric field (IEF) simultaneously modulated 0D/0D/1D-Co 3 O 4 /TiO 2 /sepiolite composite catalyst by exploiting sepiolite surface-interfacial interactions to adjust the Co 2+ /Co 3+ ratio at the Co 3 O 4 /TiO 2 heterointerface. In situ irradiation X-ray photoelectron spectroscopy and density functional theory (DFT) calculations reveal that the interfacial Co 2+ O Ti bond (compared to the Co 3+ O Ti bond) plays a major role as an atomic-level charge transport channel at the p-n junction. Co 2+ /Co 3+ ratio increase also enhances the IEF intensity. Therefore, the enhanced IEF cooperates with the interfacial Co 2+ O Ti bond to enhance the photoelectron separation and migration efficiency. A coupled photocatalysis-peroxymonosulfate activation system is used to evaluate the catalytic activity of Co 3 O 4 /TiO 2 /sepiolite. Furthermore, this work demonstrates how efficiently separated photoelectrons facilitate the synergy between photocatalysis and peroxymonosulfate activation to achieve deep pollutant degradation and reduce its ecotoxicity. This study presents a new strategy for constructing high-quality heterogeneous interfaces by consciously modulating interfacial chemical bonds and IEF, and the strategy is expected to extend to this class of spinel-structured semiconductors.
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APPLIED SURFACE SCIENCE
·
2023
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IF 6.7
Jinwei Tian,Yu Cui,Lele Zhang,Chao Peng,Xiangfei He,Liang Chen,Yulin Bai,Chunli Guo,Yuede Pan,Gang Li,Yanzhen Liu,Han Chen
The cruising range of lithium batteries in new energy vehicles became main issue, so lithium-sulfur batteries (LSBs) with high theoretical energy density are becoming great expectations. However, the polysulfide-shuttle behavior and slow redox kinetics of the electrochemical processes result in a fast capacity and cycle life fade in LSBs, especially at high sulfur loads. In this paper, MoP nanoparticles were dispersed on P, N co-doped graphitic nanosheets (MoP/PNC) by one-step high-temperature phosphating method, which as a separator-modified material achieved an excellent electrochemical performance. The initial discharge specific capacity can reach 1470 mAh g −1 at a current density of 0.2C and the capacity attenuation per cycle in 600 cycles is only 0.074% (1C). Surprisingly, LSBs with MoP/PNC -modified separator can deliver a high area capacity of 9.30 mAh cm −2 with a sulfur loading up to 7.43 mg cm −2 on the positive electrode. The above-mentioned excellent electrochemical performances benefited from the synergistic effects of strong catalytic conversion ability of MoP and the physical/chemical adsorption and catalytic capability of PNC, which resulted in low polysulfide permeability and high sulfur utilization.
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