Journal of Materials Chemistry A
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2025
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IF 9.5
Neway Belachew,Qitao Liu,Weilong Qin,Muhammad Bilal Akbar,Jing Gao,Hao Wang,Jiabo Le,Qinglu Liu,Yongbo Kuang
Photoelectrochemical (PEC) water splitting holds promise as a major source of sustainable energy production in the future. However, stable photoelectrodes for long-term use, particularly in harsh environments, remain challenging for large-scale PEC applications. Herein, this study reports facile, rapid, and scalable deposition of two-dimensional (2D) In2Se3 protection layers to improve the photoelectrochemical performance and stability at pH 12.3 and pH 13, where bismuth vanadate (BiVO4) is typically unstable. BiVO4/In2Se3 achieves a photocurrent density of 12.38 mA cm−2 at 1.23 V vs. reverse hydrogen electrode (RHE) under 455 nm (39 mW cm−2) LED light illumination at pH 12.3. The suitable energy alignment of In2Se3 boosts hole extraction from BiVO4 and prolongs the lifetime of holes before recombination. The photoelectrochemical stability tests reveal that the In2Se3-protected BiVO4 achieved over 40 h stability at pH 12.3. Studies on the corrosion mechanism of BiVO4/In2Se3 show that the oxidation of In2Se3 by the hole accumulation at the surface destabilizes its lattice structure, which impedes the formation of chemically stable In2Se3 in the given chemical environment. Therefore, a catalyst layer or a fast-kinetics reaction medium is required to utilize the accumulated holes at the surface, which enables the long-term use of protective layers in alkaline environments.
研究领域:
材料科学
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能源科学
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电化学
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DOI
高影响因子
Nature Synthesis
·
2025
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IF 20
Chen Hao,Zhao Yumeng,Zhang Xinyue,Li Rui,Wang Aoxuan,Zhang Haiming,Liu Junxiang,Wen Bohua,Zhang Lan,Hua Qingsong,Liu Tongchao,Wu Kai,Amine Khalil,Luo Jiayan
Lithium metal is the Holy Grail anode material for high-energy-density batteries. Unfortunately, applications of Li metal anodes are restricted by their inherent propensity to form dendrites at practical current densities. Here we present an approach that directly converts commercial polycrystalline Li (poly-Li) into various monocrystalline Li metal anodes with single facets via a recrystallization technique. By elucidating the diffusive kinetic and mechanical characteristics of different Li facets, we reveal that monocrystalline Li(110) exhibits the lowest diffusion barrier of 0.02 eV, an order of magnitude lower than poly-Li’s 0.2 eV, and a 71% reduction in Young’s modulus from 9.42 GPa to 2.71 GPa. The critical current density can be raised by an order of magnitude in solid-state batteries using monocrystalline Li(110), and the cycling stability of Li metal batteries is extended fivefold. We envision that the manipulation of the crystal plane will effectively tackle the pivotal challenges in achieving high-energy-density batteries.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
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IF 15.1
Hai Liu,Guoying Tan,Mengxuan Li,Zhuang Zhang,Marshet Getaye Sendeku,Yaping Li,Yun Kuang,Xiaoming Sun
Hydrogen evolution reaction is an important half-cell reaction in electrocatalytic water splitting process, which is an efficient way to store renewable energy into hydrogen fuel. However, grid scale water splitting always require high current densities up to amperes per square centimeter, which results change in local pH on the electrode surface, leading to instability risk of cathodic catalyst. Herein, a single atomic Ru doped WO 3 catalyst was fabricated, which exhibit excellent hydrogen evolution reaction (HER) activity with only 28.0, 17.6, and 83.0 mV in acidic, alkaline, and neutral media respectively as well as robust stability for 100 h at ampere-level current density is reported. Synchrotron radiation and density functional theory (DFT) calculations revealed that the defective oxygen and strong electron transfer from W sites to Ru not only achieved moderate H adsorption but also protected Ru sites from agglomeration, leading to superior HER activity and stability at industrial current density.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2025
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IF 8.2
Yang Peng,Churong Huang,Meiling Pan,Xin Yue,Shaoming Huang
The development of efficient nonprecious metal catalysts for the alkaline hydrogen oxidation reaction (HOR) catalyst in alkaline anion-exchange membrane fuel cells (AEMFCs) is of great significance. Nickel-based catalysts are considered to be promising HOR catalysts. Here, we report the interfacial engineering of reduced graphene oxide-supported Ni and Ni–Mo bimetallic nitrides (Ni–Ni3Mo3N/rGO), which exhibit excellent catalytic activity of alkaline HOR. The electron transfer from Ni to Ni3Mo3N has been regulated to tune the electronic structure. Due to the interface effect between Ni and Ni3Mo3N, Ni–Ni3Mo3N/rGO exhibits enhanced HOR activity, with a high current density of 2.65 mA cm–2 at an overpotential of 50 mV. Additionally, it demonstrates higher exchange current density (j0, 3.21 mA cm–2) and kinetic current density (jk, 10.35 mA cm–2), indicating fast kinetics and high intrinsic activity of Ni–Ni3Mo3N/rGO. Furthermore, detailed characterization results illustrate that due to the rational adsorption of hydrogen and hydroxyl groups by Ni–Ni3Mo3N/rGO, it possesses significant activity and durability. These research findings are of great importance for the development of more efficient alkaline HOR catalysts to promote the application of alkaline AEMFCs.
研究领域:
催化
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电化学
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材料科学
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能量转换
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燃料电池
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纳米技术
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产品关联
DOI
PubMed
高影响因子
Nature Communications
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2022
·Vol. 13
·期 1
·1-11
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IF 17.694
Zhang Yudi,Arpino Kathryn E.,Yang Qun,Kikugawa Naoki,Sokolov Dmitry A.,Hicks Clifford W.,Liu Jian,Felser Claudia,Li Guowei
Despite the fruitful achievements in the development of hydrogen production catalysts with record-breaking performances, there is still a lack of durable catalysts that could work under large current densities (>1000 mA cm −2 ). Here, we investigated the catalytic behaviors of Sr 2 RuO 4 bulk single crystals. This crystal has demonstrated remarkable activities under the current density of 1000 mA cm −2 , which require overpotentials of 182 and 278 mV in 0.5 M H 2 SO 4 and 1 M KOH electrolytes, respectively. These materials are stable for 56 days of continuous testing at a high current density of above 1000 mA cm −2 and then under operating temperatures of 70 °C. The in-situ formation of ferromagnetic Ru clusters at the crystal surface is observed, endowing the single-crystal catalyst with low charge transfer resistance and high wettability for rapid gas bubble removal. These experiments exemplify the potential of designing HER catalysts that work under industrial-scale current density.
研究领域:
材料科学
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电化学
✓ 已验证
DOI
PubMed
高影响因子
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS
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2024
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IF 1.3
Wenbin Jin,Nan Liu,Fang Cheng,Zongqing Ma,Yongchang Liu,Pingzhan Si,Hongliang Ge
We report the C substitution effects in MgB 2 bulks on the lattice parameters, FWHM, and critical current density ( J c ) as a function of doping level. It is shown that using carbon-coated boron powder can effectively control the grain growth of MgB 2 during the whole sintering process. Accompanied by the rapid cooling process, the final average grain size can be restrained within merely 50 nm, and the J c value of the sample can be significantly improved at high field. On top of that, adding Cu is also considered a key factor in improving the current carrying property of the graphene-doped sample throughout the whole field, which can be attributed to the formation of the MgCu 2 alloy phase.
研究领域:
材料科学
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超导体研究
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DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
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2021
·Vol. 25
·期 3
·1111-1120
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IF 2.647
Wang Zhiwei,Ru Juanjian,Hua Yixin,Bu Jiaojiao,Geng Xiao,Zhang Wenwen
Tin (Sn) powders with pyramid chain and dendrite structures are successfully prepared by electrodeposition in choline chloride-ethylene glycol deep eutectic solvent (ChCl-EG DES) at 343 K. Cyclic voltammetry demonstrates that increasing SnCl 2 concentration from 30 to 70 mM is favorable for the reduction of Sn(II) ions to metallic Sn on Ni electrode. The roles of current density (10–30 mA·cm −2 ) and SnCl 2 concentration (30–70 mM) on the current efficiency and energy consumption are discussed during the electrodeposition of Sn powders. Experimental results show that the current efficiency and energy consumption are 88.7% and 347.1 kW·h·t −1 , respectively at 20 mA·cm −2 and 50 mM SnCl 2 . Besides, the micromorphology and crystal structure of Sn powders are analyzed by FESEM and XRD. Morphology analysis manifests that pyramid chains and dendrites in length of 30–220 μm are the dominate morphologies and the formation mechanism of the pyramid chain is also discussed. Moreover, XRD analysis and crystal texture reveal that metallic Sn is obtained with a body-centered tetragonal crystal structure. The (101) plane is the preferred at higher current density, while the (200) plane gets the strongly preferred orientation as SnCl 2 concentration increases. Graphical abstract
Sn powders electrodeposited from SnCl 2 -ChCl-EG solution and growth mechanism of the pyramid chain structure.
研究领域:
材料科学
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电化学
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产品关联
DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2019
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IF 3.375
Kaixuan Yan,Xiaofeng Hang,Junsheng Liu,Jianquan Luo,Yinhua Wan
Hypophosphorous acid (H3PO2) is an important chemical product with wide applications in pharmaceuticals and electroless plating. In this study, bipolar membrane electrodialysis (BMED) was used to produce H3PO2 from sodium hypophosphite salt (NaH2PO2) to replace the traditional preparation methods. The BMED process was optimized in terms of current density, NaH2PO2 salt concentration, and initial NaOH concentration of the base solution. The results indicated that low Na+ leakage occurred at lower salt concentrations. Under the optimum conditions, such a BMED system obtained a high concentration of H3PO2, a low Na+ content, and a low energy consumption, equaling to 1.03 mol/L, 670 ppm, and 1.18 kW h/kg, respectively. To minimize the amount of phosphorous acid (H3PO3) generated from H3PO2 oxidation during the BMED process, a nitrogen aeration operation was applied in both the acid and salt chambers, decreasing the HPO32– content to 251 ppm, which was 44.1% lower than that without a dissolved oxygen content control strategy. The newly produced H3PO3 during the BMED process was reduced by 96.5%. The obtained results indicated that the BMED process has great potential for application in the production of high-quality H3PO2 from NaH2PO2 in industry.
研究领域:
化学工程
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环境科学
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产品关联
DOI
高影响因子
Coatings
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2023
·Vol. 13
·期 7
·1266
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IF 3.4
Qian Kou,Weiliang Jin,Chuntao Ge,Jie Pang,Jun Zhang,Geir Martin Haarberg,Saijun Xiao,Ping Wang
In this paper, electrodeposition of a molybdenum coating was conducted in Na3AlF6-NaF-Al2O3-MoO3molten salts at 930 °C to investigate the availability of preparation of thick molybdenum coatings. The effects of current density and electrodeposition time on the morphology of the produced molybdenum coating were studied. With the increase of current density (10~70 mA·cm−2), the coating thickness was increased from 10 μm to 30 μm, with all the current efficiency above 97%. Under a current density of 30 mA/cm2, with the rise of electrodeposition time (10~60 min), three stages of the deposit growth were observed, including the formation of a large number of fine crystals, transformation into fibrous morphology and well-developed faceted grains. The formation of a large number of fine crystals at the initial stage of the electrodeposition could facilitate electroplating molybdenum coatings with good quality at higher current density and longer duration. Thus electrodeposition at a current density of 100 mA·cm−2for 3 h has been performed, resulting in the preparation of relatively flat, dense, and coherent molybdenum coatings with a thickness of 140 μm on a nickel substrate, with a current efficiency above 85%. It is anticipated that the electrodeposition of molybdenum coatings in the present molten system is suitable for electroplating thick molybdenum coatings.Keywords:cryolite-based molten salt;electrodeposition;molybdenum coating;nickel substrate
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
INTERMETALLICS
·
2020
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IF 3.398
Xinhua Li,Feng Lan,Xin Wen,Huanhuan Zhao,Qingshuang Ma,Zhu Qian,Lei Ma,Zongqing Ma,Yongchang Liu
The Nb 3 (Al 1-x Sn x ) superconductors (x = 0.05, 0.15, 0.25, 0.35) were prepared by mechanical alloying and subsequent low-temperature sintering. It was found that the critical current density ( J c ) of the obtained Nb 3 (Al 1-x Sn x ) sample is enhanced significantly compared to undoped Nb 3 Al prepared using the same method. The maximum value of the J c reaches up to 5.10 × 10 4 A·cm −2 (4.2 K, 5 T) for Nb 3 (Al 0.85 Sn 0.15 ) sample. Combined with the phase composition analysis and microstructure observation, it is indicated that Sn enters the A15 crystal structure of Nb 3 Al forming the Nb 3 (Al 1-x Sn x ) phase after low-temperature sintering. What's more, Sn doping improves the grain connectivity as well as refines the grain size of Nb 3 Al, which are the main reasons for the enhancement of J c in the Sn doped samples. Based on the exploration of the phase evolution of Nb–Al–Sn system during the mechanical alloying and subsequent low-temperature sintering process, it is also confirmed that Nb 3 Sn forms firstly during the sintering process and then can serve as the perfect nucleus of Nb 3 Al to increase its nucleation rate, leading to the significant decrease of the grain size of Nb 3 Al.
研究领域:
材料科学
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超导体研究
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DOI
高影响因子
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
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2024
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IF 2.2
Lipeng Wang,Mengjiao Zheng,Longjie Lai,Rui Wang,Tongton Qian,Li Zhang,Waqar Younas,Guobing Mao,Qi Liu
Graphical Au nanoparticles and PB-modified ZnIn 2 S 4 composite photoanode are successfully prepared on FTO substrates. The ZnIn 2 S 4 /Au/PB photoanode achieves a photocurrent density of 0.42 mA/cm 2 at 1.23 V RHE under light illumination alongside a high incident photon-to-electron conversion efficiency (IPCE) value of 24.6 %. ZnIn 2 S 4 has been regarded as a promising photoanode material for photoelectrochemical (PEC) water splitting. However, its severe charge recombination and low carrier transport efficiency limit practical applications in PEC water splitting. A novel ZnIn 2 S 4 /Au/PB photoanode was prepared by using the in-situ photodeposition of Au nanoparticles and electrodeposition of Prussian blue (PB) nanoparticles onto ZnIn 2 S 4 nanosheets. The photocurrent density of the prepared ternary photoanode reached 0.42 mA/cm 2 at 1.23 V RHE , which is 6 times higher than pure ZnIn 2 S 4 . The introduction of Au nanoparticles remarkably improved the efficiency of carrier transport and separation. Additionally, the application of PB onto ZnIn 2 S 4 resulted in an extended spectrum of light absorption. The incident photon-to-current efficiency (IPCE) value recorded was 24.6 % at 350 nm. This improvement can be attributed to the formation of a Z-type heterojunction.
研究领域:
材料科学
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能源科学
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产品关联
DOI
高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2023
·Vol. 129
·期 4
·1-10
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IF 2.7
Luo Junsong,Guo Yiming,Liu Lian,Yu Zhou,Zhao Yong,Huang Mei,Xu Min,Duan Xuru,Zhang Yong
Nb 3 (Al 1– x Zn x ) ( x = 0–0.05) wires were obtained after single rapid heating, quenching and low temperature transformation (single-RHQT) process. It is found that Zn element can make crystal plane diffraction peaks of Nb 3 Al phase shift to higher angle, and the interplanar crystal spacing decreases gradually, which indicates that Al atoms in Nb 3 Al lattice are replaced by Zn atoms with smaller diameters. And the addition of Zn can reduce Δ T c and make the superconducting phases purer, and magnetic performances such as critical temperature ( T c ), critical current density ( J c ), irreversible field ( B irr ) are better than that of the pure sample. Nb 3 (Al 0.99 Zn 0.01 ) wire shows the highest J c value of about 5.9 × 10 4 A/cm 2 at 4.2 K and 8 T, and the highest T c value of 16.8 K was found in Nb 3 (Al 0.98 Zn 0.02 ). The influence of multiple rapid heating, quenching and low temperature transformation (multi-RHQT) process on Nb 3 (Al 1– x Zn x ) wires was mainly explored, and 2 at% and 3 at% Zn samples were selected with relatively high Δ T c values for five times RHQT treatment. It is observed that the multi-RHQT process can further reduce Δ T c , and more homogeneous superconducting phases are discovered compared with that of single-RHQT process. The elements are also evenly distributed in the multi-RHQT-processed Nb 3 (Al 1– x Zn x ) wires, leading to the improvement of J c , B irr performances compared to single-RHQT samples. Multi-RHQT-processed Nb 3 (Al 0.98 Zn 0.02 ) and Nb 3 (Al 0.97 Zn 0.03 ) samples show the J c values of 1.7 × 10 5 A/cm 2 and 1.2 × 10 5 A/cm 2 (4.2 K, 8 T), which are nearly ten times as many as that of single-RHQT samples, and Nb 3 (Al 0.97 Zn 0.03 ) has the highest B irr values of 19.6 T (4.2 K) and 10.7 T (10 K). Flux pinning of the Nb 3 (Al 1– x Zn x ) ( x = 0.01–0.05) wires follows the surface pinning mechanism, where grain boundary and stacking faults are considered as pinning centers.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）