Nanoscale
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2020
·Vol. 12
·期 26
·14267-14278
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IF 6.895
Muhammad Asif,Muhammad Rashad,Zeeshan Ali
Among post-lithium ion batteries, magnesium ion batteries (MIBs) are receiving growing attention due to their divalent nature, intrinsic low cost, dendrite free cycling, and atmospheric stability. However, their realization is constrained because of the absence of suitable cathodes that can accommodate Mg2+ with fast reversibility. To bypass the sluggish movement of Mg2+ ions inside the cathode and utilize the full advantage of the Mg anode, a Mg2+/Li+ hybrid ion battery (MLIB) is introduced here with rationally designed porous Ni/Zn co-doped CoS2@C spheres as the cathode material. The Ni/Zn-CoS2@C cathode with high porosity and electrical conductivity showed an appreciable specific capacity of 158 mA h g−1 at 20 mA g−1 for MIBs, which was significantly boosted up to 667 mA h g−1 at a current density of 50 mA g−1 by employing Mg2+/Li+ hybrid electrolytes. Their specific capacity and the corresponding energy density (614 W h Kg−1) are the highest among MLIBs and comparable to those of lithium ion batteries. Furthermore, MLIBs displayed significant cycling stability by retaining the maximum specific capacities of 324.6 and 230 mA h g−1 at 100 and 500 mA g−1, respectively after 100 cycles. The excellent electrochemical properties of the synthesized cathodes are attributed to their high porosities and electrical conductivities, the synergistic effect of doped species and their capability to accommodate both Mg2+ and Li+ ions without side reactions. Various ex situ characterization tools were employed to develop further understanding of the intercalation chemistries and mechanisms of both Mg2+ and Li+ ions inside host materials.
研究领域:
储能
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电化学
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材料科学
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电池技术
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纳米材料
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DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.3
Ziyue Chen,Weiyan Lei,Yi Shen,Jiashuang Li
Designed a defect-engineered Mg 2-x Zn x SnO₄:0.01Eu 3+ series (x = 0.01–1.00) based on inverse-spinel Mg 2 SnO 4 to elucidate the synergistic roles of Zn²⁺ and Eu³⁺ in tuning photoluminescence (PL) and persistent luminescence (PersL).The phosphors were synthesized via a high-temperature solid-state reaction and characterized by XRD (Rietveld refinement), XPS, PL/PLE spectroscopy, PersL decay measurements, and three-dimensional thermoluminescence (TL; 290–647 K; 3 K·s⁻¹). As Zn content increases, both the PL and PersL bands red-shift from 500 nm to 550–555 nm, and the emission intensity peaks at x = 0.30.XPS verifies that Sn⁴⁺, Zn²⁺, and Eu³⁺ are the predominant valence states. General-order kinetics (GOK) fitting of the TL curves indicates a shift in the trap population toward medium-to-deep levels, accompanied by stronger carrier retrapping. Mechanistically, Zn²⁺ increases oxygen-vacancy-related defects and lowers defect-associated energy levels. In contrast, aliovalent Eu³⁺ primarily modulates the trap distribution via charge compensation, rather than serving as the main emitting center. The composition at x=0.30 achieves an optimal balance between trap population and defect concentration, enabling a bright, color-tunable afterglow.
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CHINESE JOURNAL OF CHEMICAL ENGINEERING
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2026
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IF 3.7
Yaqian Dong,Shuyu Yue,Kai Wang,Taotao Li,Tiehua Ma,Dong Guo,Yuxiang Wu,Zhibo Wu,Yaohui Zhang,Liang junfei
The sluggish kinetics of the oxygen reduction reaction (ORR) pose a critical bottleneck in the energy conversion efficiency of fuel cells and metal–air batteries. Developing non-precious metal catalysts with pH-universal adaptability and high cost-effectiveness is an urgent need in the field. In this study, we introduce an innovative biomass pyrolysis-driven nano-confinement strategy. Expired milk powder and g-C 3 N 4 are utilized as dual-function carbon sources to successfully construct a composite structure of nitrogen-doped carbon nanotubes (NCNTs) encapsulating FeCo alloy nanoparticles (FeCo@NCNT). During high-temperature pyrolysis, the decomposition products of milk powder deposit onto the molten FeCo particles, forming carbon nanotubes, while the decomposition of g-C 3 N 4 provides nitrogen doping and induces periodic distortions in the carbon lattice, resulting in nanoconfined morphology of FeCo@NCNT. This structure formed by N-doped carbon nanotubes encapsulating FeCo alloy enables the catalyst to achieve half-wave potentials of 0.83 V, 0.71 V, and 0.60 V in 0.1 mol·L −1 KOH, 0.5 mol·L −1 H 2 SO 4 , and 0.1 mol·L −1 PBS electrolytes, respectively. The assembled zinc–air battery exhibits an open-circuit voltage of 1.51 V and a peak power density of 169 mW∙cm –2 . This approach provides a new paradigm for biomass waste resource utilization and the design of energy catalysts for pH-universal applications.
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CARBON
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2026
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IF 12.7
Dapeng Wang,Chang Wen,Ruonan Li,Xinyi Wang,Yuting Wu,Youjian Zhu,Wenjie Gang
Aqueous zinc-ion batteries (AZIBs) are promising for grid-scale energy storage, yet their cathodes often suffer from low electronic conductivity, which aggravates polarization and accelerates cycling-induced contact loss. Here, we clarify the role of conductive-network architecture in layered V 2 O 5 composite cathodes by fixing the external conductive carbon additive content at 10 wt% and systematically varying the mass ratio between 0D Ketjen black (KJ) and 1D vapor-grown carbon fibers (VGCF). The optimized formulation, denoted as KV55 with a KJ to VGCF ratio of 5 to 5, forms a hierarchical point-line hybrid electronic percolation network in composite electrodes, in which VGCF provides a continuous long-range conductive scaffold and KJ generates dense local contact nodes that bridge active particles and fibers. As a result, KV55 achieves the highest in-plane conductivity of 24.65 S cm −1 and the lowest interfacial charge-transfer resistance among the tested electrodes, leading to reduced polarization and improved rate capability. It delivers a high reversible capacity of 475.8 mAh g −1 at 0.2 A g −1 and sustaining 250.1 mAh g −1 at 20 A g −1 . Under long-term cycling at 10 A g −1 , KV55 maintains 341.6 mAh g −1 after 4000 cycles, corresponding to 87.8% capacity retention. These results provide a practical guideline for constructing carbon-efficient conductive networks that mitigate electronic-transport limitations and stabilize electrode contacts in low-conductivity layered cathodes.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2026
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IF 6.7
Ming Zeng,Haiting Shi,Wenhui Cui,Xianyan Wu,Shuaitong Liang,Wei Wang,Nishonov Akbarjon,Zhiwei Xu
Non-precious metal catalysts have emerged as the leading candidate to replace platinum-based catalysts due to their cost-effectiveness. However, the sluggish oxygen reduction kinetics and inadequate durability limit their application in zinc-air battery technology. Herein, we demonstrate a facile strategy to construct a hierarchical architecture of N-doping γ-graphyne-supported carbon nanotubes encapsulating cobalt nanoparticles (Co@N-CNT/N-GY). This unique structure prevents the aggregation and exfoliation of nanoparticles, thereby enhancing the catalysts durability. Synchrotron radiation absorption spectroscopy confirms the presence of Co-N x coordination in Co@N-CNT/N-GY, which contributes to promote the oxygen reduction reaction. Density-functional theory calculations further reveal that nitrogen doping in carbon nanotubes induces substantial charge redistribution among adjacent carbon atoms, facilitating the formation of the OOH* intermediate and lowering the overall Gibbs free energy barrier. Moreover, the open-pore architecture of N-doping γ-graphyne promotes the rapid diffusion of dissolved oxygen and creates abundant gas-liquid-solid interfaces, thereby boosting the Oxidation-reduction reaction (ORR) kinetics. As a result, the Co@N-CNT/N-GY catalyst delivers a high specific capacity (723 mAh g −1 ) and excellent power density (135.86 mW cm −2 ) when employed in a zinc-air battery. This study provides valuable insights for designing the γ-graphyne-supported non-precious metal ORR electrocatalyst with high activity and durability.
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高影响因子
TOPICS IN CATALYSIS
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2026
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IF 3.7
Mu Yifang,Li Yanhong,Huang Aisheng
Direct synthesis of dimethyl ether (DME) from carbon dioxide (CO 2 ) hydrogenation by using bifunctional catalysts has attracted much attention in view of CO 2 conversion and utilization. However, direct CO 2 hydrogenation to DME is challenging due to kinetics and thermodynamic limitations, thus requiring the development of more effective bifunctional catalysts. In this work, metal-organic framework (MOF) Cu/Zn-BTC derived CuZnO catalyst is developed and combined with HZSM-5 for direct CO 2 hydrogenation to DME. The influence of Si/Al ratio of HZSM-5, mass ratio of CuZnO and HZSM-5, reaction temperature, reaction pressure and space velocity on the catalytic performances of the CuZnO/HZSM-5 bifunctional catalysts is systematically examined in a fixed-bed reactor. Attributing to a high activity of the Cu/Zn-BTC derived CuZnO catalyst for CO 2 hydrogenation to methanol, the CuZnO/HZSM-5 bifunctional catalysts display high CO 2 conversion and DME selectivity. Under a mild reaction condition (225 °C and 3.0 MPa), a high CO 2 conversion of 54.3% and DME selectivity of 79.5% are obtained for the bifunctional catalysts, which outperform the state-of-the-art catalysts for CO 2 hydrogenation to DME. Further, after 100 h of reaction, the bifunctional catalyst can still maintain a high CO 2 conversion rate (~ 52.6%) and DME selectivity (~ 77.3%), which suggests promising prospects for industrial applications.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Zhong Lv,Xiaolu Zhai,Mengtian Cui,Xiangshan Bi,Cun Zhou
Carboxylated modified cotton fabrics via a diazotization reaction followed by in-situ growth of Co/Zn bimetallic MOFs. • The coating surface achieved a separation efficiency of over 99% for heavy-density oil/water mixtures and over 97% for light-density oil/water mixtures. • Degradation of most dyes and antibiotics by light and PMS activation synergistic catalysis. • Active sites of molecular structure and ecotoxicity of degradation products were investigated by DFT and T.E.S.T., respectively. In this paper, a diazotization reaction was first used to introduce carboxyl groups on the surface of cotton fabrics, and then Co/Zn bimetallic metal organic frameworks (MOFs)-based ZIF-67/8 were in-situ grown on the carboxylated cotton fabrics. Subsequently, 3-mercaptopropyltriethoxysilane (MPTES) formed a covalent bond with 10-undecenoic acid (UA) through a photo-initiated thiol-ene click reaction, and after the addition of polymethylhydrosiloxane (PMHS), it formed a strong covalent bond with the hydroxyl groups on cotton fibers through a hydrolysis condensation reaction. Hence, a polymer-functionalized Co/Zn bimetallic MOFs-based superwetting cotton fabric coating surface (PMHS/UA/ZIF-67/8-CF) was obtained. Polymer-functionalized MOFs coatings, exhibiting wettability reversible conversion capability, are favorable for the separation of different types of oil/water mixtures and maintaining excellent separation performance. Furthermore, the Co/Zn bimetallic MOFs exhibited efficient degradation by a dual-path mechanism through synergistic light-driven charge separation and PMS (peroxymonosulfate) activation. It exhibited excellent catalytic degradation properties for dyes such as phenothiazines, xanthenes, and azo compounds, as well as tetracene derivative antibiotics. In addition, the active sites of the molecular structure and the catalytic degradation pathways were investigated using density functional theory (DFT) calculations and liquid chromatography-mass spectrometry (LC-MS) analysis, respectively. Ultimately, the toxicity of methylene blue (MB) and its degradation products was evaluated using the toxicity estimation software tool (T.E.S.T.). This work presents a promising research strategy for environmental wastewater treatment, demonstrating the potential of functional coatings with reversible conversion wettability and properties for degrading organic pollutants. Download: Download high-res image (416KB) Download: Download full-size image
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高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 19.7
Hongyang Zhao,Sihan Fan,Yulong Xiang,Junfeng Li,Yue Li,Xuelu Wang,Xinjuan Liu,Likun Pan
Asymmetric Ni-N-Cl sites are built by NH 4 Cl vaporization. • Ni-N-Cl overcomes the kinetic challenges and delivers excellent CO 2 reduction performance. • XAFS, DFT and CW-ODMR reveal the asymmetric coordination mechanism. • Cl coordination creates electron-rich Ni centers with shifted d-band. • Ni-N-Cl achieves 86.2% CO Faradaic efficiency and enables durable Zn-CO 2 batteries for 53 h operation. Electrocatalytic CO 2 reduction reaction to value-added chemicals represents a promising pathway for sustainable carbon utilization. However, the symmetric coordination environment of conventional M-N 4 single atom sites restricts electronic structure regulation and limits their intrinsic activity. Herein, we develop an asymmetric Ni-N-Cl coordination structure synthesized via high-temperature NH 4 Cl vaporization assisted strategy. This Cl-mediated asymmetric coordination induces a distinct charge redistribution, generates an electron enriched Ni center and an upward shift of the d-band center closer to the Fermi level. These intrinsic modulations significantly facilitate CO 2 activation and proton transfer to the *COOH, thereby lowering the reaction energy barrier. Consequently, the Ni-N-Cl catalyst achieves a CO Faradaic efficiency of 99.67% at -0.7 V vs. RHE in H cell and 17 h long term stability at -100 mA cm -2 in flow cell. Furthermore, this catalyst delivers a peak power density of 1.62 mW cm -2 and a durability of 53 h. This study provides a general methodology for the rational design of asymmetric single atom catalysts through orbital engineering for high-efficiency energy storage technologies. Download: Download high-res image (199KB) Download: Download full-size image
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高影响因子
Small Methods
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2026
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IF 8.7
Enmin Lv,Yilong Wang,Hongtao Yu,Hao Zhang,Xuefeng Zhang,Xinglong Dong
Developing efficient non-precious oxygen reduction reaction (ORR) catalysts is essential for advancing zinc-air batteries (ZABs). This work presents a one-step synthesis of core-shell Cr 3 C 2 @C nanoparticles (NPs) via DC arc-discharge plasma. Precise regulation of cooling dynamics achieves a switch from growth-dominated to nucleation-dominated regimes, enabling controlled preparation of nanoparticles with distinct sizes. The liquid-nitrogen-cooled Cr 3 C 2 @C ln NPs exhibit smaller size and higher surface area, leading to enhanced ORR performance. Subsequent nitrogen doping at 700 °C produces Cr 3 C 2 @C ln (N x ) catalysts with precisely tuned nitrogen content (0.65–1.24 at.%). The optimized Cr 3 C 2 @C ln (N 1.13 ) demonstrates outstanding ORR activity with a half-wave potential ( E 1/2 ) of 0.81 V and superior kinetics, surpassing commercial Pt/C. In situ optical emission spectroscopy (OES) monitors the plasma state and electron temperature, providing fundamental insights into nucleation mechanisms. Density functional theory (DFT) calculations reveal that nitrogen doping optimizes the p -band center of carbon and significantly reduces the energy barrier of the rate-determining step (RDS) (*OH desorption). When applied in both liquid and solid-state flexible zinc-air batteries (FZABs), the Cr 3 C 2 @C ln (N 1.13 )-based cathode delivers exceptional performance, achieving high power densities (230.64 and 164.83 mW·cm −2 , respectively) and remarkable cycling stability. This study offers an efficient strategy for designing high-performance transition metal carbide electrocatalysts through synergistic control of size and electronic structure.
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DOI
PubMed
高影响因子
FOOD CHEMISTRY
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2025
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IF 9.8
Min Zhang,Enguang Zuo,Xiaoxi Wu,Yuanjia Wang,Wenxue Xiao,Huamao Wei,Ru Jia,Tao Huang,Wenge Yang,Zhaohui Qiao
An intelligent and active hydrogel was developed by incorporating alizarin and a zinc-gallic acid metal-organic framework (Zn-MOF) into a polyvinyl alcohol matrix for simultaneous shrimp freshness monitoring and preservation. Zn-MOF imparted enhanced mechanical strength (1.3-fold tensile and 2.9-fold compressive modulus increases), greater amine gas adsorption (evidenced by an 11 rise in euclidean distance, ED), and strong antimicrobial and antioxidant activities, including 100 % antibacterial efficacy and radical scavenging rates of 81.09 %, 94.56 %, and 70.54 % for DPPH, ABTS, and OH radicals. The hydrogel showed a distinct yellow-to-purple transition across pH 6–12, serving as a visual indicator of shrimp spoilage, with ED values nonlinearly correlated with total volatile basic nitrogen (TVB-N) levels (R 2 = 0.9847). A smartphone-based portable device enabled rapid freshness evaluation via color changes. The hydrogel also reduced total viable count (TVC), TVB-N, and pH levels, extending shrimp shelf life by at least 3 days, demonstrating its industrial potential.
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PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2023
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IF 7.2
Lijuan Peng,Xiaomin Peng,Zhaogen Zhu,Qianqun Xu,Kaifen Luo,Zhaotong Ni,Dingsheng Yuan
Developing the low-cost, durable, and efficient bifunctional electrocatalyst for oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) plays an important role in the commercial implementation of the Zn-air batteries. Herein, we design and synthesize the MnO and Co nanoparticles coated with N-doped carbon (MC@NC) as an excellent bifunctional oxygen electrocatalyst. It is found that the optimal MC@NC-0.3 exhibits outstanding ORR performance with a positive half-wave potential of 0.82 V and excellent OER activity with a small overpotential of 360 mV at 10 mA cm −2 . When applied in the liquid Zn-air battery, MC@NC-0.3 displays a high maximum power density of 153 mW cm −2 , a large specific capacity of 776 mAh g −1 and the excellent cycling stability with a negligible increase after 300 h. Furthermore, the fiber-shaped all-solid-state Zn-air battery also displays remarkable stability at high current density . This study offers a facile strategy to construct a high-efficient, low-cost, and durable transitional metal-based bifunctional electrode for renewable energy applications .
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高影响因子
APPLIED SURFACE SCIENCE
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2023
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IF 6.7
Guangda Zhou,Xiaoli Yan,Tianyu Zhang,Kui Wang,Jingtao Zhang,Junjie Guo
The rational design and construction of the hierarchical porous structure of carbon framework to support transition metal-based catalysts is critical to increase their active sites density and facilitate mass/electron transport. Herein, we report a novel nanocapsules with cobalt core and nitrogen-doped carbon shells (Co@NC) supported on MOFs-derived hierarchical porous carbon framework. The rational hierarchical porous carbon framework with controllable size and micropore/mesoporous ratio was achieved by one-step pyrolysis of Zn(acac) 2 ·phen ligand and ZIF-67 precursor, which is beneficial for the mass transport in the oxygen reduction reaction (ORR). The 0.4Co@NC-900 electrocatalyst display a distinguished ORR activity in the pH-universal range, with a half-wave potential of 0.91 V in alkaline and 0.76 V in acid electrolytes. The excellent ORR performance of our electrocatalyst can be attributed to its optimized micropore/mesoporous ratio of carbon framework with efficient mass transport, together with the graphitized carbon shell on Co nanoparticles which not only enhances the electron/proton transport, but also suppresses the chemical corrosion of the Co nanoparticles. Impressively, the Zinc-air battery as air electrode offers peak power density of 203 mW cm −2 and long-term stability of 130 h, showing an excellent battery performance. This study offers a fresh method of constructing ORR catalysts with increased activity and durability over a universal pH range.
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高影响因子
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