International Journal of Electrochemical Science最新文献_第2页

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IF 2.4 4区化学 Q4 ELECTROCHEMISTRY

International Journal of Electrochemical Science

Pub Date : 2026-02-01 DOI: 10.1016/S1452-3981(26)00031-3

引用次数: 0

Expired omeprazole as an effective corrosion inhibitor for copper in nitric acid 过期奥美拉唑对硝酸中铜的有效缓蚀剂

IF 2.4 4区化学 Q4 ELECTROCHEMISTRY

International Journal of Electrochemical Science

Pub Date : 2026-01-23 DOI: 10.1016/j.ijoes.2026.101303

Azhar Farooq , Enas H. Ali , Zainab W. Ahmed , Anees A. Khadom , Khalida F. Al-azawi

Researchers have investigated the effectiveness of an expired pharmaceutical drug, omeprazole, as a corrosion inhibitor for copper in 0.5 M nitric acid using mass-loss measurements conducted at different temperatures. The results demonstrated that the tested drug significantly reduced the corrosion rate of the copper alloy in the acidic medium. An inhibition efficiency of 97.7 % was achieved when 900 ppm of expired omeprazole was applied to the copper surface. Thermodynamic analyses were performed to determine the activation and adsorption parameters. The findings indicate that temperature and inhibitor concentration are the key factors influencing the corrosion behavior. The calculated Gibbs free energy of adsorption suggests that the inhibitor molecules adhere to the copper surface predominantly through physical adsorption. Furthermore, the adsorption process was found to follow the Langmuir isotherm, confirming that the pharmaceutical molecules naturally and spontaneously adsorb onto the copper surface. The research novelty lies in the application of an expired drug as a highly effective corrosion inhibitor under aggressive nitric acid environments. This offered cost-effective, ecofriendly, and alternative to conventional corrosion inhibitors.

研究人员利用在不同温度下进行的质量损失测量，研究了一种过期药物奥美拉唑作为0.5 M硝酸中铜的缓蚀剂的有效性。结果表明，所测药物能显著降低铜合金在酸性介质中的腐蚀速率。用900 ppm的过期奥美拉唑对铜表面进行缓蚀，缓蚀率为97.7 %。热力学分析确定了活化和吸附参数。结果表明，温度和缓蚀剂浓度是影响腐蚀行为的关键因素。计算的吸附吉布斯自由能表明，抑制剂分子主要通过物理吸附在铜表面。此外，发现吸附过程遵循Langmuir等温线，证实了药物分子自然自发地吸附在铜表面。该研究的新颖之处在于将一种过期药物应用于腐蚀性硝酸环境下的高效缓蚀剂。这为传统的缓蚀剂提供了经济、环保的替代方案。

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引用次数: 0

Laser-cladded hBN/Ni-based composite coatings for enhanced wear and corrosion resistance of HT250 cast iron 激光熔覆hBN/ ni基复合涂层增强HT250铸铁的耐磨损和耐腐蚀性能

IF 2.4 4区化学 Q4 ELECTROCHEMISTRY

International Journal of Electrochemical Science

Pub Date : 2026-01-20 DOI: 10.1016/j.ijoes.2026.101302

Lunxiang Li , Xiaojun Xue , Haitao Qu , Feng Liu , Liqian Liu , Xiaoyong Chen , Ruize Xu

HT250 cast iron is widely used for its excellent castability and cost-effectiveness, but its corrosion and wear resistance are insufficient. This study fabricated Ni-based composite coatings (Ni625 +Ni50 +hBN) on HT250 via laser cladding and systematically investigated the effects of laser power (1100 W, 1300 W, 1500 W) on the coating's microstructure, wear resistance, and corrosion resistance. XRD analysis showed the coating matrix is γ-Ni, with borides (Ni₂B), carbides (Cr₂₃C₆), and undecomposed hBN. SEM and EDS revealed that at 1300 W, hBN decomposes appropriately, forming a dispersion-strengthened structure with moderately sized hard phases. Mechanically, the 1300 W sample exhibited the highest microhardness (552.16 HV), lowest friction coefficient, and minimal wear loss. Electrochemical tests confirmed the 1300 W coating has optimal pitting corrosion resistance, with the highest breakdown potential, most noble repassivation potential, and significantly higher charge transfer resistance than other samples. Thus, 1300 W is the optimal laser power, achieving synergistic optimization of hard phase size, distribution, and corrosion resistance.

HT250铸铁因其优良的浇注性和成本效益而被广泛使用，但其耐腐蚀和耐磨性不足。采用激光熔覆的方法在HT250上制备了Ni625 +Ni50 +hBN复合镀层，系统研究了激光功率（1100 W、1300 W、1500 W）对镀层显微组织、耐磨性和耐腐蚀性的影响。XRD分析表明，涂层基体为γ-Ni，含硼化物（Ni₂B）、碳化物（Cr₂₃C₆）和未分解的hBN。SEM和EDS分析表明，在1300 W时，hBN适当分解，形成具有中等大小硬相的分散强化结构。机械性能方面，1300 W样品具有最高的显微硬度（552.16 HV）、最低的摩擦系数和最小的磨损损失。电化学试验证实，1300 W涂层具有最佳的抗点蚀性能，击穿电位最高，再钝化电位最高，电荷转移电阻明显高于其他样品。因此，1300 W为最优激光功率，实现了硬相尺寸、分布和耐腐蚀性的协同优化。

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引用次数: 0

Theoretical analysis of sulfur dioxide–imidazolium ionic liquid interaction and its application in electrochemical sensing 二氧化硫-咪唑离子液体相互作用的理论分析及其在电化学传感中的应用

IF 2.4 4区化学 Q4 ELECTROCHEMISTRY

International Journal of Electrochemical Science

Pub Date : 2026-01-19 DOI: 10.1016/j.ijoes.2026.101301

Chunping Gao , Zhaoxia Wang , Chao Wang , Tao Wang , Wenying Chen , Lirong Chang , Yanni Sun , Xudong Zhang , Gongkai Chen , Xueliang Wang

Sulfur dioxide (SO₂) is a common atmospheric pollutant. Its testing is mandatory, especially in the areas of occupational health and safety. In this work, the interaction of SO₂ and [Emim]BF₄ was studied firstly by quantum chemical calculations. The results showed that the adsorption of SO₂ by ionic liquids (ILs) was primarily governed by physical interactions dominated with electrostatic forces. The strength of weak interactions between [Emim]⁺ and [BF₄]^- exceeded that of X-H˙˙˙O type weak hydrogen bonds, indicating no substitutional adsorption of SO₂ at the [BF₄] site. Electron flow towards SO₂ was confirmed through density difference mapping during all three adsorption processes. Finally, the electrochemical behaviors of SO₂ on the [Emim]BF₄ modified screen-printed electrodes (SPEs) were studied by Differential Pulse Voltammetry (DPV), Electrochemical Impedance Spectroscopy (EIS) and Amperometric i-t curve (I-t), respectively, and an electrochemical sensor for SO₂ was set up. This work is necessary for understanding the mechanism of SO₂ capture by ILs, rationally designing the functional ILs, and promoting their application in sensing pollutant gases.

二氧化硫（SO2）是常见的大气污染物。它的检测是强制性的，特别是在职业健康和安全领域。本文首次通过量子化学计算研究了SO2与[Emim]BF4的相互作用。结果表明，离子液体对SO2的吸附主要受以静电力为主的物理相互作用支配。[Emim]+与[BF4]-之间的弱相互作用强度超过了X-H˙˙O型弱氢键，表明[BF4]位点没有对SO2进行取代吸附。在三个吸附过程中，通过密度差图确定了电子流向SO2。最后，采用差分脉冲伏安法（DPV）、电化学阻抗谱法（EIS）和安培i-t曲线（i-t）分别研究了SO2在[Emim]BF4改性丝网印刷电极（spe）上的电化学行为，并建立了SO2电化学传感器。这项工作对于理解离子阱捕获SO2的机理，合理设计功能性离子阱，促进其在污染物气体检测中的应用具有重要意义。

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引用次数: 0

SOC-SOH co-estimation across the battery life cycle using a simplified electrochemical model with adaptive parameter updating and LSTM 基于自适应参数更新和LSTM的简化电化学模型的电池寿命周期SOC-SOH共估计

IF 2.4 4区化学 Q4 ELECTROCHEMISTRY

International Journal of Electrochemical Science

Pub Date : 2026-01-19 DOI: 10.1016/j.ijoes.2026.101300

Dianliang Yang , Nailiang Qi , Mingying Huo , Yijiao Liu , Chao Lyu , Mengda Duan

As a core function of the battery management system, state of charge (SOC) estimation has been the focus of investigation. However, previous research does not adequately consider the bidirectional interference effect between battery state of health (SOH) and SOC estimation. This leads to an increase in the error in SOC estimation after battery aging. The role of bidirectional interference is addressed by a hybrid algorithmic framework that updates the battery model parameters and co-estimates SOC/SOH. Specifically, a simplified electrochemical model (SEM) with online parameter update is first constructed in this paper, and the SOC estimation algorithm is built based on this model with the EKF algorithm. The SEM parameters are updated with the help of parameter sensitivity analysis. Subsequently, a battery SOH estimation model is built using the long short-term memory (LSTM) algorithm. It should be noted that the LSTM algorithm uses voltage and current data from the battery when its SOC is between 20% and 80%. Finally, a hybrid SOC/SOH estimation framework with multi-time scale update is constructed. Based on the method proposed in this paper, the SOC estimation error under the New European Driving Cycle (NEDC) working condition throughout the life cycle of the lithium-ion battery is less than 0.8%.

作为电池管理系统的核心功能，荷电状态估计一直是研究的热点。然而，以往的研究并未充分考虑电池健康状态（SOH）与电池荷电状态估算之间的双向干扰效应。这将导致电池老化后SOC估计误差的增加。双向干扰的作用通过一个混合算法框架来解决，该框架可以更新电池模型参数并共同估计SOC/SOH。具体而言，本文首先构建了一个参数在线更新的简化电化学模型（SEM），并在此模型的基础上结合EKF算法构建了SOC估计算法。利用参数灵敏度分析对SEM参数进行了更新。随后，利用长短期记忆（LSTM）算法建立电池SOH估计模型。值得注意的是，LSTM算法使用电池SOC在20%到80%之间时的电压和电流数据。最后，构建了一个多时间尺度更新的SOC/SOH混合估计框架。基于本文提出的方法，锂离子电池在新欧洲驾驶循环（NEDC）工况下全寿命周期SOC估算误差小于0.8%。

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引用次数: 0

Dual-site doping enhances the performance of NiMnFe-LDH catalysts for alkaline oxygen evolution 双位点掺杂提高了NiMnFe-LDH催化剂的碱性析氧性能

IF 2.4 4区化学 Q4 ELECTROCHEMISTRY

International Journal of Electrochemical Science

Pub Date : 2026-01-15 DOI: 10.1016/j.ijoes.2026.101282

Xinxuan Duan , Daoming Zhang , Jiacuo Xirao , Zhenyu Zhou , Yanbin Wang , Xi Xiao

Nickel-iron layered double hydroxides (NiFe-LDHs) are among the most promising non-precious metal catalysts for alkaline oxygen evolution reaction (OER), yet their performance still requires further improvement for practical applications. While introducing a third metal is a common strategy, most dopants occupy only a single valence site, limiting their ability to simultaneously optimize both Ni^2 + and Fe³⁺ centers in the LDH lattice. This work exploits the unique dual-valent character of manganese (Mn²⁺/Mn³⁺) to achieve simultaneous substitution at both Ni²⁺ and Fe³⁺ sites, a novel approach confirmed by XPS analysis. The resulting NiMnFe-LDHs catalyst exhibits exceptional OER activity (278 mV @10 mA·cm⁻²) and 200-hour stability at industrial current densities (400 mA·cm⁻²). In-situ Raman spectroscopy reveals that Mn doping facilitates the LDH-to-NiFeOOH transformation during OER, while XPS demonstrate the Mn²⁺/Mn³⁺-induced electron redistribution enhances both charge transfer and intermediate adsorption. This valence-mediated dual-site doping strategy establishes a new paradigm for designing high-performance LDH catalysts.

镍铁层状双氢氧化物（NiFe-LDHs）是碱析氧反应（OER）中最有前途的非贵金属催化剂之一，但其性能仍需进一步改进才能得到实际应用。虽然引入第三种金属是一种常见的策略，但大多数掺杂剂只占据一个价位，限制了它们同时优化LDH晶格中Ni2 +和Fe3+中心的能力。这项工作利用锰（Mn2+/Mn3+）独特的双价特性在Ni2+和Fe3+位点上同时实现取代，这是一种由XPS分析证实的新方法。所制得的NiMnFe-LDHs催化剂表现出优异的OER活性（278 mV @10 mA·cm−2）和在工业电流密度（400 mA·cm−2）下200小时的稳定性。原位拉曼光谱结果表明，Mn的掺杂促进了OER过程中ldh到nifeooh的转变，而XPS结果表明，Mn2+/Mn3+诱导的电子重分配促进了电荷转移和中间吸附。这种价介导的双位点掺杂策略为设计高性能LDH催化剂建立了新的范例。

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引用次数: 0

Study on the corrosion behavior of three types of steel in marine atmospheric environment 三种钢在海洋大气环境中的腐蚀行为研究

IF 2.4 4区化学 Q4 ELECTROCHEMISTRY

International Journal of Electrochemical Science

Pub Date : 2026-01-15 DOI: 10.1016/j.ijoes.2026.101298

Peng Zhang , Jingwang Niu , Jie Zhang , Haiyang Yang , Qifu Zhang

Q235, Q345, and 921 steels were selected as study materials for a one-year exposure test in the marine atmospheric environment of Qingdao. The corrosion behavior and mechanisms of the three steels were systematically investigated using weight-loss measurements, electrochemical tests, pitting morphology observations, and rust layer phase analyses. The results indicated that the corrosion rates followed the order Q345 > Q235 > 921. Q345 steel exhibited MnS inclusions that acted as pitting-sensitive sites, resulting in lower corrosion resistance than Q235 steel, while 921 steel, containing Ni, Cr, and Mo, showed significantly reduced corrosion rates. XRD analysis revealed that the corrosion products of all three steels mainly consisted of γ-Fe₂O₃/Fe₃O₄, α-FeOOH, and γ-FeOOH, with 921 steel exhibiting a higher proportion of α-FeOOH and greater amorphization, forming a dense protective layer that effectively slowed electrochemical corrosion. XPS results showed that the formation of NiFe₂O₄ in 921 steel conferred cation selectivity to the rust layer, enhancing its protective effect. Raman spectroscopy indicated that the rust layers of all three steels displayed an outward-to-inward stratified structure, but the inner α-FeOOH layer of 921 steel was richer and more stable, providing the basis for its superior corrosion resistance. Electrochemical tests further demonstrated that 921 steel had significantly higher polarization resistance and impedance than Q235 and Q345 steels, which increased with exposure time, indicating a dense and stable rust layer that strongly hindered charge transfer and ion diffusion.

选取Q235、Q345和921钢材作为研究材料，在青岛海洋大气环境中进行为期一年的暴露试验。通过失重测量、电化学测试、点蚀形貌观察和锈层相分析，系统地研究了这三种钢的腐蚀行为和机理。结果表明：腐蚀速率为Q345 >； Q235 >； 921。Q345钢中含有作为点蚀敏感部位的MnS夹杂物，其耐蚀性低于Q235钢，而921钢中含有Ni、Cr和Mo，腐蚀速率明显降低。XRD分析表明，3种钢的腐蚀产物主要由γ-Fe₂O₃/Fe₃O₄、α-FeOOH和γ-FeOOH组成，其中921钢的α-FeOOH比例更高，非晶化程度更大，形成致密的保护层，有效减缓了电化学腐蚀。XPS结果表明，921钢中NiFe₂O₄的形成赋予了锈层阳离子选择性，增强了其保护作用。拉曼光谱分析结果表明，三种钢的锈层均呈现由外向内分层结构，但921钢内部α-FeOOH更丰富、更稳定，这为其优异的耐蚀性提供了基础。电化学测试进一步表明，921钢的极化电阻和阻抗显著高于Q235和Q345钢，且随着暴露时间的延长而增大，表明其致密而稳定的锈层严重阻碍了电荷转移和离子扩散。

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引用次数: 0

Recent advances in carbon dot-driven nanomaterials for photoelectrochemical-based degradation of contaminants: A review 碳点驱动纳米材料光电降解污染物的研究进展

IF 2.4 4区化学 Q4 ELECTROCHEMISTRY

International Journal of Electrochemical Science

Pub Date : 2026-01-14 DOI: 10.1016/j.ijoes.2026.101297

Abera Demeke Ambaye , Temesgen Girma Kebede , Naledi Raleie , Simiso Dube , Mkhulu Mathe , Mathew Muzi Nindi , Seshibe Makgato , Touhami Mokrani

Carbon dots (CDs) have attracted increasing attention due to their unique physicochemical and photophysical properties, such as strong photoluminescence, high crystallinity, and excellent dispersibility. This review focuses on the synthesis, characterization, and application of CD-based nanostructures in photoelectrochemical (PEC) degradation systems for the removal of pollutants. The commonly employed synthesis methods, such as hydrothermal, solvothermal, and others, are comprehensively discussed along with their advantages, limitations, and scalability potential. In addition, the review highlights the basic principles of photoelectrochemical degradation, emphasizing the role of CDs as efficient light-harvesting and charge-transfer materials. The characterization techniques used to evaluate the structural, optical, and electronic properties of CDs are briefly summarized. Moreover, recent innovations in the design and functionalization of CD-based composites for enhanced photocatalytic activity are reviewed. Particular attention is given to degradation mechanisms, interfacial charge dynamics, and strategies for improving quantum efficiency and stability. Finally, the current challenges and research gaps are outlined, with perspectives on future directions aimed at developing sustainable, low-cost, and high-performance CD-based PEC technologies for environmental remediation.

碳点（cd）由于其独特的物理化学和光物理性质，如强光致发光、高结晶度和优异的分散性而受到越来越多的关注。本文综述了基于cd的纳米结构材料的合成、表征及其在光电化学（PEC）降解系统中的应用。对常用的水热法、溶剂热法等合成方法的优点、局限性和可扩展性进行了全面讨论。此外，本文还重点介绍了光电降解的基本原理，强调了CDs作为高效光收集和电荷转移材料的作用。简要概述了用于评价CDs的结构、光学和电子特性的表征技术。此外，综述了近年来在增强光催化活性的cd基复合材料的设计和功能化方面的创新。特别关注退化机制，界面电荷动力学，以及提高量子效率和稳定性的策略。最后，概述了当前的挑战和研究差距，并展望了未来的发展方向，旨在开发可持续、低成本和高性能的基于cd的环境修复技术。

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引用次数: 0

ZrB2-reinforced electroless Ni-W-P composite coating with enhanced corrosion and wear resistance in 3.5 wt% NaCl solution zrb2增强化学镀Ni-W-P复合涂层在3.5 wt% NaCl溶液中的耐蚀耐磨性能增强

IF 2.4 4区化学 Q4 ELECTROCHEMISTRY

International Journal of Electrochemical Science

Pub Date : 2026-01-13 DOI: 10.1016/j.ijoes.2026.101293

Hongjie Li , Hongfa Huang , Deqiang Cai , Jie Xiao , Xi Yuan , Wenxu Zhu , Liangchen Lv

In this paper, various concentrations ZrB₂ nanoparticles were applied in the Ni-W-P bath system, and a series of Ni-W-P composite coatings were fabricated via composite chemical deposition. The phase composition, microstructure, elemental distribution, and chemical states of the different coatings were systematically characterized using XRD, SEM, EDS, and XPS, and the results of the tests indicated that Ni-W-P/ZrB₂ composite coatings were prepared successfully. The corrosion resistance, wear resistance and hardness of the coatings were investigated through electrochemical corrosion tests, friction tests and hardness tests. Electrochemical tests revealed that the incorporation of ZrB₂ particles significantly refines the coating’s microstructure. This structural optimization directly contributes to a remarkable enhancement in corrosion resistance and mechanical properties, as evidenced by detailed analysis of the electrochemical parameters. When ZrB₂ content reaches 1.25 g/L, Ni-W-P/ZrB₂ composite coatings exhibited the most excellent corrosion resistance (the lowest corrosion rate of 0.00499 mm/a). To further compare the mechanical properties between the pure alloy deposit and ZrB₂ strengthened composite deposit, the results of friction tests and hardness tests demonstrated that Ni-W-P/ZrB₂ composite deposit has better wear resistance.

本文将不同浓度的ZrB2纳米粒子应用于Ni-W-P镀液体系中，通过复合化学沉积法制备了一系列Ni-W-P复合镀层。采用XRD、SEM、EDS和XPS对不同涂层的相组成、微观结构、元素分布和化学状态进行了系统表征，测试结果表明成功制备了Ni-W-P/ZrB2复合涂层。通过电化学腐蚀试验、摩擦试验和硬度试验对镀层的耐蚀性、耐磨性和硬度进行了研究。电化学测试表明，ZrB2颗粒的加入显著改善了涂层的微观结构。详细的电化学参数分析证明，这种结构优化直接有助于显著提高耐腐蚀性和力学性能。当ZrB2含量达到1.25 g/L时，Ni-W-P/ZrB2复合镀层的耐蚀性能最优，腐蚀速率最低，为0.00499 mm/a。为了进一步比较纯合金镀层与ZrB2强化复合镀层的力学性能，摩擦试验和硬度试验结果表明，Ni-W-P/ZrB2复合镀层具有更好的耐磨性。

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引用次数: 0

Preparation of phthalocyanine-ligand-based MOF materials for the hydrogen evolution reaction 酞菁配体基MOF材料的制备及其析氢反应

IF 2.4 4区化学 Q4 ELECTROCHEMISTRY

International Journal of Electrochemical Science

Pub Date : 2026-01-13 DOI: 10.1016/j.ijoes.2026.101291

Mingming Shi, Guodong Tang, Shaogui Hua, Jichen Hu

As a clean energy carrier, hydrogen energy demands efficient and cost-effective electrocatalysts for the hydrogen evolution reaction (HER). Although traditional noble metal catalysts exhibit high performance, their scarcity and high cost limit practical applications. This study proposes a novel strategy of constructing non-precious metal MOF materials using phthalocyanine ligands to address these challenges. The core innovation lies in designing and synthesizing a cobalt-phthalocyanine-derived MOF composite (CoPc@rGO-MOF) using a hot-solvent method. This method achieves the atomic dispersion of Co–N–C active sites within a hierarchical porous carbon matrix. The study optimizes the preparation process and investigates the structure–performance relationship for HER. The optimized CoPc@rGO-MOF demonstrated exceptional HER activity in 1 M KOH, with a low overpotential of only 98 mV at 10 mA cm⁻² and a small Tafel slope of 56 mV dec⁻¹. Moreover, it exhibited remarkable stability, with less than 5 % activity decay after 1000 cycles. Characterization revealed that the conjugated system of phthalocyanine ligands significantly enhanced charge transfer efficiency, while the hierarchical pore structure facilitated mass transport. This work provides a high-performance, non-precious metal HER catalyst and offers insights into the rational design of macrocyclic-ligand-based MOFs for energy conversion applications.

氢能作为一种清洁的能源载体，需要高效、经济的析氢反应电催化剂。传统贵金属催化剂虽然性能优异，但其稀缺性和高成本限制了其实际应用。本研究提出了一种利用酞菁配体构建非贵金属MOF材料的新策略来解决这些挑战。核心创新在于采用热溶剂法设计和合成钴-酞菁衍生的MOF复合材料（CoPc@rGO-MOF）。该方法实现了Co-N-C活性位点在分层多孔碳基体中的原子分散。本研究优化了HER的制备工艺，并考察了其结构性能关系。优化后的CoPc@rGO-MOF在1 M KOH中表现出优异的HER活性，在10 mA cm−2时过电位仅为98 mV， Tafel斜率很小，为56 mV dec−1。此外，它还表现出了显著的稳定性，经过1000次循环后活性衰减小于5 %。表征表明，酞菁配体的共轭体系显著提高了电荷转移效率，而分层孔结构促进了质量传输。这项工作提供了一种高性能的非贵金属HER催化剂，并为能量转换应用中基于大环配体的mof的合理设计提供了见解。

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引用次数: 0