JOURNAL OF ALLOYS AND COMPOUNDS
·
2015
·
IF 2.999
Xin Wang,Zhurong Liang,Xueqing Xu,Nan Wang,Jun Fang,Junxia Wang,Gang Xu
Highly Cu-rich copper indium sulfide (CuInS 2 , CIS) quantum dots were synthesized utilizing copper chloride (CuCl) and indium acetate (In(Ac) 3 ) as metal cation precursors, combined with n-dodecanethiol (DDT) as a coordinating sulfur source and solvent. With excess of In(Ac) 3 , i.e. with Cu/In ratios of 1/4, together with Zn 2+ ions post-treatment, a relatively high photoluminescence quantum yield (QY) of ∼73% with long average lifetime of ∼359 ns has been obtained, which is proposed to be attributed to the Cu-rich defect states in the CIS nanocrystals (NCs) nuclei. Meanwhile, the formation of In-rich CIS–ZnS alloy, i.e. Zn–Cu–In–S (ZCIS) with high density of Cu vacancies, combined with the surface passivation of ZnS overlay resulted in a high QY. Finally, the formation mechanism of the ZCIS/ZnS with Cu-rich nuclei has been proposed.
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2024
·Vol. 59
·期 7
·3009-3017
·
IF 3.5
Fu Yuan,Gong Zhemin,Li Dapeng,Liu Yongxing,Zhou Xiaolong,Yang Yong,Jiao Qing
Solid electrolytes equipped battery show promise in solving energy storage and ecological concerns owing to their excellent electrical conductivity and chemical stability. Only a limited number of substances satisfy the demanding criterion of high ionic conductivity (≥ 10 −3 S/cm), while using non-toxic elements. In this work, the designed Na 3.3 Zn 0.1 Sb 0.9 S 4 electrolyte, a zinc-doped sodium sulfide ion conductor, with a maximum conductivity of 1.48 × 10 −3 S/cm under normal conditions, and a low activation energy of 0.128 eV was achieved. This was ruled by substituting low-valence Zinc for antimony in the SbS 4 3− cell, maintaining efficient ion transport pathways. Additionally, the electrolyte demonstrated strong air stability under humid conditions and emitted minimal H 2 S. The origin of heterovalent ion doping and the impact of thermal effects on electrochemical performance were discussed in detail, which were crucial to promote the development of sodium-ion solid electrolytes.
✓ 已验证
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2022
·Vol. 46
·期 23
·11149-11157
·
IF 3.925
Haoran Pan,Yue Wang,Zhenjie Lu,Xinning Huang,Xingxing Chen
High-performance bifunctional electrocatalysts for both the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) are arousing great interest aiming at efficient electrochemical splitting of water. Herein, we report a facile strategy to fabricate Co/Zn sulfide supported on Cu-foam (CoZn-S/Cu-F) as a free-standing electrode with high-performance for overall water splitting. In half-cell electrochemical systems, the overpotentials required to reach the current densities of ±10 mA cm−2 for the OER and HER are only 170 and 130 mV, respectively. After a long-term stability test running 20 000 cyclic voltammograms, the respective potential losses for the OER and HER are only 82 and 41 mV at ±50 mA cm−2. The constructed overall water splitting system driven by simulated solar energy also exhibits prominent performance with gas bubbles continuously generated at both electrodes. A cell voltage of only 1.58 V is required to reach the current densities of ±10 mA cm−2, surpassing the commercialized noble metal and state-of-the-art non-noble metal electrodes. The excellent performance for the overall water splitting is ascribed to the CoS nanoparticles covered with ZnS nanoflocs on the highly conductive Cu-foam, which allows close interfacial contact with the electrolyte, promotes mass and charge transfer, and facilitates desorption of the generated gas from the catalyst surface.
✓ 已验证
DOI
高影响因子
Chemistry-An Asian Journal
·
2017
·Vol. 12
·期 13
·1598-1604
·
IF 4.083
Zhiwei Jiang,Zhanrong Zhang,Tianbin Wu,Pei Zhang,Jinliang Song,Chao Xie,Buxing Han
Graphical Adding value : A Ru-Zn-Cu I catalyst supported on hydroxyapatite (HAP) was applied for the conversion of glycerol, a biodiesel byproduct, to lactic acid (see scheme). Cu I inhibits C−C bond cleavage and thus improved the yield of lactic acid in this system. The biodiesel production process generates a significant amount of glycerol as a byproduct. A drive to add value has attracted worldwide attention, with the aim of improving the overall effectiveness and profitability of biodiesel production. Herein, we report hydroxyapatite (HAP)-supported Ru-Zn-Cu I (Ru-Zn-Cu I /HAP) as effective catalysts for the transformation of glycerol to lactic acid (LA).The catalysts were characterized by using different techniques. The effects of catalyst composition, reaction time, and temperature on the conversion and product distribution were investigated. It was revealed that Ru nanoparticles of less than 2 nm were dispersed uniformly on HAP. Cu I could effectively inhibit the cleavage of C−C bonds, which led to improved yields of LA. Under optimized conditions, the yield of LA could reach 70.9 % over Ru-Zn-Cu I /HAP. Furthermore, the catalyst could be reused at least four times without an obvious loss of activity or selectivity.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DIAMOND AND RELATED MATERIALS
·
2024
·
IF 4.3
Shiyuan Zhu,Peng Liu,Qiongyu Zhou,Qianjun Deng,Yuanyuan Li,Jiacheng Wang,Zuo He,Changchun Tian,Xiaofen Wang
Zn coating is a typical anti-corrosion coating for carbon steel. Considering the sacrificial nature of Zn coating, it is essential to enhance the corrosion resistance for the long-term performance in the practical application. In this work, two-dimensional carbon nanoplatelets (2D-CNs) with nanometer thickness (∼100 nm) and ultra-large lateral size (10–40 μm) and Mn element have been successfully co-deposited with Zn onto low carbon steel by a simple electrodeposition method. Results show that the Zn-Mn/2D-CNs composite coating is composed of Zn phase, ZnMn 3 phase and a small number of 2D-CNs. The Zn-Mn/2D-CNs composite coating exhibits a modified surface quality with ultrafine grains and smaller roughness (Ra = 176 nm, Rq = 131 nm) when compared with that of Zn coatings (Ra = 798 nm, Rq = 684 nm). Besides, the inert 2D-CNs within the composite coating can act as the corrosion barriers. Therefore, the Zn-Mn/2D-CNs composite coating has excellent anti-corrosion performance, owning the lowest corrosion current densities i corr (9.2 μA cm −2 ) and maximum coating resistance R coat (1.2 kΩ·cm −2 ) and charge transfer resistance R ct (3.5 kΩ·cm −2 ), associated with its modified microstructure, Mn element with passivation property, and 2D-CNs barriers. These results demonstrate the desirable potentiality of inert 2D carbon materials in the electrodeposition of Zn-based coating for improving the corrosion resistance.
✓ 已验证
DOI
高影响因子
ACS Nano
·
2023
·
IF 17.1
Changhao Zhu,Xuye He,Yun Shi,Zhenkang Wang,Baojiu Hao,Wanhao Chen,Hao Yang,Lifang Zhang,Haoqing Ji,Jie Liu,Chenglin Yan,Jinqiu Zhou,Tao Qian
Despite the numerous advantages of aqueous Zn batteries, their practical application under cryogenic conditions is hindered by the freezing of the electrolyte because the abundance of hydrogen bonds (H-bonds) between H2O molecules drives the aqueous system to transform to an orderly frozen structure. Here, a design of H-bond interactions based on the guiding ideology of “strong replaces weak” is proposed. The strong H-bonds formed between introduced eutectic components and water molecules break down the weak H-bonds in the original water molecule network, which contributes to an ultralow freezing point and a high ionic conductivity of 1.7 mS cm–1 at −40 °C. Based on multiperspective theoretical simulations and tailor-made in situ cooling Raman characterizations, it has been demonstrated that substituting weak H-bonds with strong H-bonds facilitates the structural reshaping of Zn2+ solvation and remodeling of the H-bond network in the electrolyte. Endowed with this advantage, reversible and stable Zn plating/stripping behaviors could be realized at −40 °C, and the full cells display a high discharge capacity (200 mA h g–1) at −40 °C with ∼75% capacity retention after 1000 cycles. This study will expand the design philosophy of antifreezing aqueous electrolytes and provide a perspective to promote the adoption of Zn metal batteries for cryogenic environment large-scale energy storage.
✓ 已验证
DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-11
·
IF 15.7
Lai Guojun,Zhao Zequan,Zhang Hao,Hu Xueting,Lu Bingan,Liang Shuquan,Zhou Jiang
Engineering the formulation of an Mn-based positive electrode is a viable strategy for producing an efficient aqueous zinc-ion battery. However, Mn dissolution and the byproducts result in capacity fading, thus limiting its electrochemical performances. To solve the undesirable issues, the concept of in-situ forming the positive electrode/electrolyte interface on the commercial MnO 2 is designed, with the help of introducing the Dioctyl Phthalate into the ZS-based electrolyte (2 M ZnSO 4 + 0.2 M MnSO 4 ), designated as ZS-DOP electrolyte. An advanced three-dimensional chemical and imaging analysis on a model material reveals the dynamic formation of positive electrode/electrolyte interface. The formed organic interface effectively suppresses the corrosion of the electrolytes with its hydrophobicity, and adjusts the pH value according to Le Chatelier’s Principle to inhibit the production of by-products. Specifically, the pouch cell assembled with the ZS-DOP electrolyte attains a reversible capacity of ~2.5 Ah and powers the unmanned aerial vehicle. Furthermore, photovoltaic energy storage applications deliver a stable capacity of 0.5 Ah and realize the power supply for mobile phones and other electronic devices. Our results facilitate the development of in-situ surface protection on the positive electrode in aqueous zinc-ion battery, providing insights into its practical application.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Keyi Chen,Quan Zong,Xuelian Liu,Haoran Yuan,Qilong Zhang,Huiwei Du,Guozhong Cao
Vanadium-based compounds suffer from the poor intrinsic conductivity, unstable structure, and sluggish reaction kinetics as the cathode materials for aqueous zinc ion batteries. In this work, conductive polymer (polypyrrole, PPy) coating/pre-intercalation is proposed to achieve stable and reversible Zn 2+ storage in ammonium vanadates (NH 4 V 4 O 10 , NVO). The PPy coating on the surface of the NVO nanobelts effectively suppresses material dissolution, and promotes the desolvation of hydrated zinc ions at the interface. The intercalated PPy within the layered structure expands the interlayer spacing, induces the formation of oxygen vacancies, and increases the electronic conductivity, thus accelerating zinc ion diffusion and electron transport kinetics. Benefiting from simultaneous optimization of the surface and interlayer structure, the PPy-NVO electrode demonstrates outstanding electrochemical properties, delivering a high discharge capacity of 455mAh g −1 at 0.1 A g −1 and 250mAh g −1 at 5 A g −1 , maintaining 89 % of its initial capacity after 2500 cycles at 4 A g −1 . Ex situ characterization techniques demonstrate the reversible Zn ions insertion/extraction storage mechanism in the PPy-NVO cathode.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS CHEMISTRY AND PHYSICS
·
2025
·
IF 4.7
Junru Li,Hui Wang,Xuefei Wang,Jinmei Ye,Xiaodong Wang,Bingchun Xue
In this study, a bimetallic nickel-doped Zn-MOF (Ni@Zn-MOF) was successfully fabricated by the hydrothermal method for the removal of norfloxacin (NOR) in pharmaceutical wastewater. The structural and surface characteristics of Ni@Zn-MOF were systematically characterized using SEM-EDS, BET, XRD, FT-IR, XPS, and Zeta potential analyses. The experimental results demonstrated that NOR could be effectively removed within a wide pH range from 3 to 11, achieving a maximum removal efficiency of approximately 94% under optimal adsorption conditions. The adsorption behaviors of NOR were in good accordance with the pseudo-second-order kinetic model and the Freundlich isotherm model. The adsorption mechanism study revealed that the good adsorption performance originated from the synergistic effects of multiple interactions, including pore filling, metal coordination, electrostatic attraction, hydrogen bond, and π-π stacking interactions. Notably, the adsorption-saturated Ni@Zn-MOF demonstrated exceptional regeneration capability and stability, maintaining removal efficiencies above 60% for NOR after five consecutive adsorption-desorption cycles. The current study suggests that the engineered Ni@Zn-MOF nanocomposite can be as a promising functional material for sustainable removal of residual antibiotic contaminants in practical wastewater treatment applications.
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Jialu Bi,Fenglin Zhang,Xuesong Zhao,Ziyang Cai,Huilin Pan
The application of hydrogel electrolytes in aqueous Zn batteries presents a promising approach to addressing challenges at Zn anodes, leveraging their flexible texture and reduced water activity. However, freezing and low ionic conductivity, particularly at low temperatures, remain critical obstacles. In this work, an antifreeze hydrogel electrolyte (PVA-0.5SL) is developed by incorporating organic sulfolane (SL) into a PVA-based hydrogel, effectively reshaping the spatial distribution of chemical components and disrupting the H-bonding network. Through FTIR chemical imaging, Raman spectroscopy, and DSC analysis, we reveal that the optimal SL concentration induces the formation of SL–Zn salt aggregation, which interrupts the H-bonding network and significantly suppresses extensive ice crystallization at extremely low temperatures. The PVA-0.5SL hydrogel achieves a high ionic conductivity of 3.64 mS cm−1 at −40 °C. A Zn‖PANI full cell utilizing PVA-0.5SL demonstrates excellent rate performance and an ultra-long cycle life of 2400 cycles at low temperatures. This study offers new insights into engineering antifreeze hydrogel electrolytes by tailoring H-bonding networks through the introduction of heterogeneous phases.
✓ 已验证
产品关联
DOI
高影响因子
Catalysis Science & Technology
·
2020
·Vol. 10
·期 15
·5060-5068
·
IF 5.721
Qing Shi,Yapeng Zheng,Weijun Li,Bin Tang,Lin Qin,Weiyou Yang,Qiao Liu
Developing highly cost-effective bifunctional oxygen electrode catalysts for metal–air batteries is urgent but remains challenging. In this paper, we report a highly-efficient Co2P-based bifunctional oxygen electrocatalyst that comprises Co2P and N,P co-doped carbon nanoparticles anchored within three-dimensional carbon nanofiber networks (denoted as Co2P-NPC/CF) through a toxic-free, one-pot synthesis involving in situ growth of Co3(PO4)2–polydopamine/bacterial cellulose (BC) that can be transformed into Co2P-NPC/CF by a subsequent pyrolysis process. This catalyst exhibits a positive half-wave potential (E1/2) of 0.85 V for the oxygen reduction reaction, and a low operating potential of 1.60 V at 10 mA cm−2 (Ej10) for the oxygen evolution reaction, superior to the benchmark Pt/C (0.82 V) and RuO2 (1.62 V) catalysts, respectively. The reversible oxygen electrode index (ΔE = Ej10 − E1/2) is just 0.75 V for Co2P-NPC/CF, surpassing those for the state-of-the-art noble-metal catalysts (ΔE = 0.80 V for Pt/C–RuO2) and most Co-based bifunctional catalysts ever reported. Furthermore, Co2P-NPC/CF-based primary Zn–air batteries can discharge at 10 mA cm−2 for 110 h with a small voltage loss of 55 mV, and the maximum power density reaches 160 mW cm−2; Co2P-NPC/CF-based rechargeable Zn–air batteries show a negligible voltage gap change after 160 charge–discharge cycles, much better than Pt/C-based batteries. The enhanced bicatalytic performance of this Co2P-based catalyst can be ascribed to the structural integration of Co2P NPs with CF networks and N,P co-doped carbon in a synergistic manner, where porous CF networks with a large specific surface area allow for uniform distribution and full exposure of dual active sites, and the simultaneous doping of P and N atoms in carbon could induce an enhanced coupling of Co2P NPs with N,P-codoped carbon. This work not only provides an easy and safe way to prepare excellent Co2P-based bifunctional catalysts for Zn–air batteries, but also demonstrates a viable structural integration strategy to offer reference for the design of multifunctional catalysts.
✓ 已验证
DOI
高影响因子
Journal of the American Chemical Society
·
2013
·
IF 10.677
Yu Zou,Xiong Su,Jiang Jiang
Cu2ZnSnS4 (CZTS) nanocrystals with different morphologies and phases have been synthesized in hot organic solvents such as dodecanethiol and oleylamine. The crystallographic phases could be controlled by the sulfur precursor and the ligand species of the metal salts used for the synthesis. When a highly reactive sulfur precursor and metal acetates were used, wurtzite CZTS nanocrystals were obtained. On the other hand, using a low-reactivity sulfur precursor or metal chlorides produced CZTS nanocrystals in a kesterite phase. The experimental results from systematic investigations indicated that the reaction rate between Zn and S precursors played a determining role for the growth of CZTS nanocrystals with different crystalline phases. A relatively faster reaction between Zn and S precursors in comparison to the Sn–S reaction favored the formation of a metastable wurtzite phase, which could be accelerated by increasing the reactivity of the S precursor. This work provided a safe and economical way to synthesize high-quality phase-controlled Cu2ZnSnS4 nanocrystals, especially wurtzite nanorods, for potential photovoltaic applications. Moreover, preliminary results show that the proposed mechanism also applies to the phase-controlled synthesis of other quaternary Cu2MSnS4 (M = Cd2+, Mn2+) nanocrystals.
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）