Electrochimica Acta最新文献_第4页

Effective anode protection for zinc-ion batteries using a covalent–organic framework coating strategy 采用共价-有机框架涂层策略对锌离子电池阳极进行有效保护

IF 5.6 3区材料科学 Q1 ELECTROCHEMISTRY

Electrochimica Acta

Pub Date : 2026-01-12 DOI: 10.1016/j.electacta.2026.148191

Shaoyang Liu, Yu Li, Shuaijie Li

Zinc-ion batteries offer strong safety, high energy density, abundant resource availability, and environmental friendliness, making them promising for energy storage applications. However, their practical deployment is hindered by issues such as corrosion passivation, dendrite growth at the zinc anode. To address these limitations, a sulfonated covalent–organic framework (COF) film is applied as a protective layer on the zinc anode. COF suppresses the interfacial side reactions by physically isolating water molecules and improving the solvation effect of zinc ions. In addition, it provides vertical pores for zinc ions to transport to the substrate, which enables fast, single zinc-ion conduction through delocalized sulfonate groups and maintains structural integrity via β-ketoenamine linkages. These structural and physicochemical features help enhance the cycling reversibility of the zinc anode, thereby enabling improved overall battery performance. Notably, a COF–Zn symmetric cell exhibits stable cycling for nearly 3000 h at a 1 mA·cm⁻² current density. Its cyclic polarization overvoltage remains nearly unchanged at 25.14 mV, with a Coulombic efficiency nearly approaches 100%. This study demonstrates the effectiveness of COF-based coating for zinc anode protection, and offers a viable strategy for enhancing the cycling stability of aqueous zinc-ion batteries.

锌离子电池具有安全性强、能量密度高、资源可用性丰富、环境友好等特点，在储能领域具有广阔的应用前景。然而，它们的实际应用受到诸如腐蚀钝化、锌阳极枝晶生长等问题的阻碍。为了解决这些限制，在锌阳极上应用了磺化共价有机框架（COF）膜作为保护层。COF通过物理隔离水分子和提高锌离子的溶剂化效果来抑制界面副反应。此外，它为锌离子输送到底物提供了垂直孔隙，这使得锌离子通过离域磺酸基快速传导，并通过β-酮胺键保持结构完整性。这些结构和物理化学特征有助于提高锌阳极的循环可逆性，从而提高电池的整体性能。值得注意的是，COF-Zn对称电池在1 mA·cm−2电流密度下可以稳定循环近3000小时。其循环极化过电压基本保持在25.14 mV不变，库仑效率接近100%。本研究证明了cof基涂层对锌阳极保护的有效性，为提高锌离子电池的循环稳定性提供了一种可行的策略。

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引用次数: 0

Efficient electrochemical ethanol oxidation from MnCo2O4 nanorods synthesized via micellar process 胶束法制备MnCo2O4纳米棒，高效电化学氧化乙醇

IF 5.6 3区材料科学 Q1 ELECTROCHEMISTRY

Electrochimica Acta

Pub Date : 2026-01-12 DOI: 10.1016/j.electacta.2026.148180

Sapna Devi, Sushma Kumari, Menaka Jha

For the direct ethanol fuel cell (DEFC), binary metal oxides are a novel class of electro-catalysts. Here we have reported a simple and facile route for spinel oxide via a surfactant route followed by calcination for MnCo₂O₄ electrochemical ethanol oxidation in an alkaline medium. The nanorods of MnCo₂O₄ are comprised of nanoparticles exhibited a high BET surface area of about 133.50 m²/g. The prepared MnCo₂O₄ electrocatalyst showed high catalytic performance, lower peak potential of 1.53 V having a peak current density of 4.60 mAcm^-2, high CO tolerance, smaller Tafel slope (81 mV/decade), and long-term stability for ethanol electro-oxidation. The superior electrochemical performance of MnCo₂O₄ is mostly due to the synergistic impact of cobalt and manganese oxide, which boosts the electrical conductivity of the spinel MnCo₂O₄ and promotes electron transport at the electrode-electrolyte interface. This study shows a low-cost simple binary metal oxide like MnCo₂O₄ can be used for energy storage and conversion applications and is a better alternative for high-cost noble metals such as Pt and Pd.

对于直接乙醇燃料电池（DEFC）来说，二元金属氧化物是一类新型的电催化剂。本文报道了一种简单易行的尖晶石氧化工艺，即表面活性剂焙烧后在碱性介质中进行MnCo2O4电化学乙醇氧化。由纳米颗粒组成的MnCo2O4纳米棒具有较高的BET表面积，约为133.50 m2/g。所制备的MnCo2O4电催化剂具有较高的催化性能，峰值电位为1.53 V，峰值电流密度为4.60 mAcm-2，具有较高的CO耐受性，Tafel斜率较小（81 mV/decade），对乙醇电氧化具有长期稳定性。MnCo2O4优异的电化学性能主要是由于钴和氧化锰的协同作用，提高了尖晶石MnCo2O4的电导率，促进了电极-电解质界面的电子传递。这项研究表明，像MnCo2O4这样的低成本简单二元金属氧化物可以用于储能和转换应用，并且是Pt和Pd等高成本贵金属的更好替代品。

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引用次数: 0

Understanding the galvanic corrosion behavior of the titanium TB5/CFRP couple in salt fog environment using electrochemical noise 利用电化学噪声研究钛TB5/CFRP偶联在盐雾环境中的电腐蚀行为

IF 6.6 3区材料科学 Q1 ELECTROCHEMISTRY

Electrochimica Acta

Pub Date : 2026-01-12 DOI: 10.1016/j.electacta.2026.148189

Longfei Xie, Wenlong Zhou, Bo Zhou, Hongwei Li, Quanwei Tian, Pengfei Zhang, Jie Zhu, Jiaxing Song, Rui Liu

This study aims to evaluate the influence of CFRP on the corrosion behavior of the TB5 alloy within the TB5/CFRP couple exposed to a salt fog environment. Polarization curves, electrochemical impedance spectroscopy (EIS), and morphology characterization reveal that the galvanic effect accelerates the corrosion of the TB5 alloy, while the CFRP surface, acting as the cathode, also undergoes degradation due to hydrolysis. Combined wavelet analysis of electrochemical noise (EN) and galvanic current monitoring demonstrate that stable pit propagation occurs on the coupled TB5 alloy surface for both 6 h and 720 h of salt fog when the average galvanic current (Ig) of the TB5/CFRP couple is greater than or equal to 3.34 × 10-8 A·cm-2. In contrast, the repair of passive film occurs on the coupled TB5 alloy surface for 312 h of salt fog when Ig equals 0.77 × 10-8 A·cm-2. These inferences are further confirmed by Transmission electron microscopy (TEM) characterization and X-ray photoelectron spectroscopy (XPS) analysis. The corrosion mechanism of the TB5/CFRP couple in salt fog environment is systematically elucidated. This research provides a crucial basis for the rational design and life assessment of aerospace structural components based on TB5 alloy and CFRP material in tropical marine environments, aiming to prevent safety hazards caused by galvanic corrosion.

本研究旨在评估CFRP对TB5/CFRP对TB5合金在盐雾环境下腐蚀行为的影响。极化曲线、电化学阻抗谱（EIS）和形貌表征表明，电偶效应加速了TB5合金的腐蚀，而作为阴极的CFRP表面也发生了水解降解。结合小波分析电化学噪声（EN）和电流监测表明，当TB5/CFRP偶联的平均电流（Ig）大于等于3.34 × 10-8 A·cm-2时，盐雾作用6 h和720 h时，TB5合金表面出现稳定的坑传播。而当Ig = 0.77 × 10-8 A·cm-2时，耦合TB5合金表面钝化膜的修复时间为312 h。透射电镜（TEM）表征和x射线光电子能谱（XPS）分析进一步证实了这些推断。系统阐述了TB5/CFRP复合材料在盐雾环境中的腐蚀机理。本研究为热带海洋环境中基于TB5合金和CFRP材料的航空结构件的合理设计和寿命评估提供了重要依据，旨在防止电偶腐蚀带来的安全危害。

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引用次数: 0

Electrochemically activated La-doped NiCo-S electrode for improving electrochemical performance 电化学活化la掺杂NiCo-S电极改善电化学性能

IF 5.6 3区材料科学 Q1 ELECTROCHEMISTRY

Electrochimica Acta

Pub Date : 2026-01-12 DOI: 10.1016/j.electacta.2026.148184

Hailong You , Dabin Li , Wei Dong , Guangjin Wang , Xiaodong Hong

To explore the contribution of rare earth doping and electrochemical activation on improving the electrochemical activity of transition metal sulfides, various La-doped NiCo-S samples are prepared on nickel foam (NF) via a two-step method, denoted as NiCoLa_x-S. The effect of La doping amount on the microstructure and electrochemical performance of NiCo-S is systematically examined. The optimized NiCoLa_0.125-S sample exhibits a nanoneedle-like structure and delivers a capacitance of 1354 F g⁻¹, about twice that of the pristine NiCo-S electrode, further confirming the beneficial role of La doping. The NiCoLa_0.125-S sample is then employed as a working electrode and the electrochemical activation is proceeded in 3 M KOH solution through repeated CV scanning. Both the CV area and capacitance of activated product heavily depend on scanning duration. The optimal activation condition is verified as 1100 cycles, and the optimized activated product delivers the highest capacitance of 2316.8 F g⁻¹. The enhanced capacitance is caused by microstructure and composition transition, in which, nanoneedle structure of initial NiCoLa_0.125-S sample transforms into porous structure consisted of thin nanosheets. The composition of activated product is verified as NiCoLa-hydroxides and NiCoLa-oxyhydroxides. Serving as a positive electrode, the NiCoLa_0.125-S sample is used to assemble a supercapacitor device. This device has a high specific capacitance and energy density, further confirming the excellent application potential of La doped NiCo-S electrode for advanced supercapacitors.

为了探索稀土掺杂和电化学活化对提高过渡金属硫化物电化学活性的贡献，采用两步法制备了各种la掺杂的NiCo-S样品，并将其标记为NiCoLax-S。系统研究了La掺杂量对NiCo-S微观结构和电化学性能的影响。优化后的NiCoLa0.125-S样品具有纳米针状结构，电容为1354 F g−1，约为原始NiCo-S电极的两倍，进一步证实了La掺杂的有益作用。然后将NiCoLa0.125-S样品作为工作电极，在3M KOH溶液中通过重复CV扫描进行电化学活化。活化产物的CV面积和电容在很大程度上取决于扫描时间。优化激活条件为1100次循环，优化后的活化产物电容最高可达2316.8 F g−1。电容的增强是由微观结构和成分转变引起的，初始NiCoLa0.125-S样品的纳米针状结构转变为由纳米薄片组成的多孔结构。活性产物的组成经验证为NiCoLa-hydroxides和NiCoLa-oxyhydroxides。作为正极，NiCoLa0.125-S样品用于组装超级电容器器件。该器件具有较高的比电容和能量密度，进一步证实了La掺杂NiCo-S电极在先进超级电容器中的良好应用潜力。

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引用次数: 0

Role of carbon in molten salt electrowinning: Mechanisms behind MgO suppression and enhanced current efficiency in magnesium production 碳在熔盐电积中的作用：镁生产中抑制氧化镁和提高电流效率的机制

IF 5.6 3区材料科学 Q1 ELECTROCHEMISTRY

Electrochimica Acta

Pub Date : 2026-01-12 DOI: 10.1016/j.electacta.2026.148193

Dong-Hee Lee , Soo-Haeng Cho , Jong-Hyeon Lee

Magnesium electrowinning is a promising method for metal production, but moisture-induced impurities frequently compromise its efficiency. The formation of passivating compounds such as MgOHCl and MgO increases cell voltage and reduces current efficiency. This study explored the addition of carbon to a NaCl–CaCl₂–MgCl₂ molten salt system at 750°C as a strategy to address these challenges. Carbon addition effectively removed the insulating MgO layer from the cathode through a carbochlorination reaction, resulting in a more stable electrochemical environment. Consequently, introducing 600 ppm carbon reduced the electrolysis cell voltage from 3.43 V to a stable 3.23 V. This reduction significantly increased current efficiency from 64% to 74% and improved the coalescence of the produced magnesium, increasing the average droplet size from 1.64 mm to 2.73 mm. These findings demonstrate that carbon addition is a highly effective approach for mitigating oxide-related issues and enhancing the energy efficiency and overall process performance of magnesium electrowinning.

电积镁是一种很有前途的金属生产方法，但水分引起的杂质经常影响其效率。钝化化合物如MgOHCl和MgO的形成增加了电池电压，降低了电流效率。本研究探索了在750°C下向NaCl-CaCl2-MgCl2熔盐体系中添加碳作为解决这些挑战的策略。碳的加入通过氯化碳反应有效地去除阴极上的绝缘MgO层，从而获得更稳定的电化学环境。因此，引入600 ppm的碳将电解电池电压从3.43 V降低到稳定的3.23 V。这种降低将电流效率从64%显著提高到74%，并改善了生成的镁的聚结，将平均液滴尺寸从1.64 mm增加到2.73 mm。这些发现表明，加碳是一种非常有效的方法，可以减轻与氧化物相关的问题，提高镁电积的能源效率和整体工艺性能。

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引用次数: 0

Screen-printed CuO electrodes for applications in photoelectrochemistry 光电化学中丝网印刷CuO电极的应用

IF 5.6 3区材料科学 Q1 ELECTROCHEMISTRY

Electrochimica Acta

Pub Date : 2026-01-12 DOI: 10.1016/j.electacta.2026.148185

Jon Velasco , Hugo José Lozano , Estefanía Villamarín-Barriga , Arancha Saiz , Ainara Ateka , Maibelín Rosales , Leire Ruiz-Rubio , Francisco Javier del Campo

This work describes the development of screen-printable inks based on copper (II) oxide (CuO) nanocrystals supported on antimony tin oxide (ATO) microparticles for photoelectrochemical applications. CuO was synthesized via co-precipitation (stirred) and solvothermal (static and rotary) methods to ensure homogeneous crystal growth and uniform surface coating. Stirring-assisted solvothermal synthesis produced CuO crystallites as small as 15 nm, compared to ∼78 nm for co-precipitated samples, and enabled uniform coating of the ATO surface. The resulting composites were formulated into printable inks and used to fabricate 3-electrode devices on PET substrates. Optical bandgap measurements yielded values of 1.16 eV for solvothermal CuO and 1.24 eV for co-precipitated CuO, consistent with efficient visible light absorption. Electrodes fabricated from solvothermal CuO-ATO (1:1 w/w) exhibited photocurrent densities of ∼1.5 µA cm⁻² under 1.70 mW cm⁻² illumination at 515 nm, which was over an order of magnitude greater than those obtained from co-precipitated counterparts. These findings demonstrate an affordable, scalable strategy for integrating narrow-bandgap semiconductors into functional photoelectrodes for solar fuel generation and photocatalysis.

这项工作描述了基于氧化铜（CuO）纳米晶体支持的氧化锑锡（ATO）微粒的光化学应用的丝网印刷油墨的发展。采用共沉淀法（搅拌法）和溶剂热法（静态法和旋转法）合成CuO，保证了晶体生长均匀和表面涂层均匀。搅拌辅助溶剂热合成制备的CuO晶体小至15 nm，而共沉淀样品的CuO晶体小至~ 78 nm，并实现了ATO表面的均匀涂层。所得到的复合材料被配制成可印刷的油墨，并用于在PET基板上制造三电极器件。光学带隙测量结果显示，溶剂热CuO的值为1.16 eV，共沉淀CuO的值为1.24 eV，与有效的可见光吸收一致。由溶剂热CuO-ATO （1:1 w/w）制成的电极在1.70 mW cm⁻²515 nm光照下的光电流密度为~ 1.5 µA cm⁻²，比共沉淀法得到的光电流密度大一个量级。这些发现证明了将窄带隙半导体集成到用于太阳能燃料发电和光催化的功能光电极中的一种经济、可扩展的策略。

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引用次数: 0

Effects of lithium-ionic state and electric field on the lithiation of electrode materials 锂离子态和电场对电极材料锂化的影响

IF 6.6 3区材料科学 Q1 ELECTROCHEMISTRY

Electrochimica Acta

Pub Date : 2026-01-12 DOI: 10.1016/j.electacta.2026.148183

Fuqian Yang, Yong Li, Erwin Hüger

In this study, we present unusual experiments indicating that the incorporation (and extraction) of lithium (Li) into (and from) pristine active materials of LIB (lithium-ion battery) electrodes, such as carbon and silicon for negative electrodes and LiNi₀.₃₃Mn₀.₃₃Co₀.₃₃O₂ for positive electrodes, occurs only when Li is in an ionic state and an electromotive force is present. To understand these behaviors, we develop a system of equations accounting for the coupling of mechanical stress, Li+ diffusion, and electric field in electrode materials in which Li is in an ionic state. An analytical formulation with the stress effect on charge distribution is incorporated in Poisson’s equation and the equilibrium equation under the condition that the principles of equilibrium thermodynamics are applicable for a non-equilibrium state which does not deviate significantly from equilibrium state. Using the system of equations, we analyze the spatiotemporal evolution of Li+ concentration, electric potential, and stress in an electrode film under galvanostatic (constant current) operation and potential intermittent titration technique (PITT) operation. The numerical results predict the presence of a Li+-depletion zone, whose size decreases with increasing the lithiation time. The stress induced by electric force is negligible in comparison to the stress induced by the diffusion of lithium ions. A peak Li+ concentration appears near the inner edge of the Li+-depletion zone and can introduce significant local volumetric strain.

在这项研究中，我们提出了不同寻常的实验，表明锂（Li）被并入（和提取）到（和从）LIB（锂离子电池）电极的原始活性材料中，如碳和硅的负极和LiNi₀₃Mn₀₃Co₀。对于正极来说，只有当Li处于离子状态并且存在电动势时，才会产生₃₃O₂。为了理解这些行为，我们开发了一个方程组，用于计算Li处于离子状态的电极材料中的机械应力，Li+扩散和电场的耦合。在平衡热力学原理适用于不明显偏离平衡态的非平衡态的条件下，在泊松方程和平衡方程中加入了应力对电荷分布影响的解析公式。利用方程组分析了恒流操作和电位间歇滴定技术（PITT）操作下电极膜中Li+浓度、电势和应力的时空演变。数值结果表明，随着锂化时间的延长，锂离子耗尽带的大小逐渐减小。与锂离子扩散引起的应力相比，由电力引起的应力可以忽略不计。Li+浓度峰值出现在Li+耗竭带的内缘附近，可引起显著的局部体积应变。

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引用次数: 0

Charging nanoporous capacitors: modelling in homogeneous approximation 充电纳米孔电容器：均匀近似的建模

IF 6.6 3区材料科学 Q1 ELECTROCHEMISTRY

Electrochimica Acta

Pub Date : 2026-01-12 DOI: 10.1016/j.electacta.2026.148179

M. Bondarenko, V. Kovalchuk, Z. Maletskyi, E. Zholkovskiy, A. Yaroshchuk

Homogeneous approximation is used to consider theoretically dynamics of charging (and discharging) of a pair of nanoporous electrodes with strongly overlapped diffuse parts of Electric Double Layers (EDL) inside pores. In this limiting case, electrostatic potential inside pores is constant, so ion transport is described by simple equations of non-stationary diffusion while ion-concentration gradients arise due to Donnan-potential “jumps” at the electrode/solution interfaces. The equations for cations and anions feature only the respective ion concentrations but are coupled via (non-linear) boundary conditions of thermodynamic equilibria at these interfaces.

采用均匀近似的方法研究了具有双电层（EDL）扩散部分强重叠的一对纳米孔电极的充放电动力学。在这种极限情况下，孔隙内的静电电位是恒定的，因此离子传输用非平稳扩散的简单方程来描述，而离子浓度梯度则是由于电极/溶液界面上的多南电位“跳跃”而产生的。阳离子和阴离子的方程仅以各自的离子浓度为特征，但通过这些界面上热力学平衡的（非线性）边界条件耦合。

引用次数: 0

Silane-functionalized rGO derived uniform carbon layers for improved electrochemical performance of nickel rich layered oxide cathodes 硅烷功能化氧化石墨烯衍生均匀碳层改善富镍层状氧化物阴极电化学性能

IF 5.6 3区材料科学 Q1 ELECTROCHEMISTRY

Electrochimica Acta

Pub Date : 2026-01-12 DOI: 10.1016/j.electacta.2026.148188

Chih-Chieh Wang, Tsung-Hung Lai, Chia-Yu Chang

Carbon exhibits high electrical conductivity and chemical stability, making it an attractive coating for suppressing corrosion and stabilizing interfaces in Ni-rich layered oxide cathodes. However, conventional high temperature carbon deposition in reducing atmospheres can reduce transition metals and compromise structural integrity and electrochemical stability. To address these limitations, 3-aminopropyltriethoxysilane (APTES) and 3-glycidyloxypropyltrimethoxysilane (GPTMS) functionalized rGO is employed to form a carbon layer on the surface of NMC811 (LiNi_0.8Mn_0.1Co_0.1O₂) at ambient processing condition. The silane groups facilitate chemical bonding with NMC811 and promote the assembly of the rGO nanosheets through hydrolysis and condensation reaction, while steric hindrance from GPTMS and electrostatic repulsion from APTES leads to different degrees of rGO dispersion, resulting in the formation of distinct carbon layer structures. Consequently, a uniform and conformal carbon coating with a thickness of approximately 3 nm and tunable porosity is achieved. Notably, APTES-functionalized rGO forms a more chemically stable and porous carbon layer due to enhanced nanosheet dispersion driven by the electrostatic repulsion. This coating facilitates electron and ion transport and suppresses parasitic side reactions through covalent encapsulation and amino-group interactions. As a result, interfacial stability and charge-transfer kinetics are markedly improved, leading to enhanced cycling durability and rate capability.

碳具有高导电性和化学稳定性，使其成为抑制腐蚀和稳定富镍层状氧化物阴极界面的有吸引力的涂层。然而，传统的高温碳沉积在还原气氛中会减少过渡金属，损害结构完整性和电化学稳定性。为了解决这些局限性，采用3-氨基丙基三乙基氧基硅烷（APTES）和3-甘油三酯氧基丙基三甲氧基硅烷（GPTMS）功能化氧化石墨烯在环境条件下在NMC811 （LiNi0.8Mn0.1Co0.1O2）表面形成碳层。硅烷基团促进了与NMC811的化学键合，通过水解缩合反应促进了还原氧化石墨烯纳米片的组装，而GPTMS的空间位阻和APTES的静电斥力导致了还原氧化石墨烯不同程度的分散，形成了不同的碳层结构。因此，获得了厚度约为3nm且孔隙度可调的均匀保形碳涂层。值得注意的是，由于静电斥力驱动的纳米片分散增强，aptes功能化的氧化石墨烯形成了化学上更稳定和多孔的碳层。这种涂层通过共价包封和氨基相互作用促进电子和离子的传递，抑制寄生副反应。因此，界面稳定性和电荷转移动力学得到了显著改善，从而提高了循环耐久性和速率能力。

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引用次数: 0

Enhanced electrochemical performance of hierarchical CoxNi (1-x)MoO4: A morphology control strategy of electrode materials for energy storage 多层CoxNi (1-x)MoO4电化学性能的增强：一种储能电极材料的形态控制策略

IF 6.6 3区材料科学 Q1 ELECTROCHEMISTRY

Electrochimica Acta

Pub Date : 2026-01-11 DOI: 10.1016/j.electacta.2026.148176

Wei Hong, Jie Hao, Jingjing Wang

High-performance electrode materials are critical to the assembly of asymmetric energy storage devices. Guided by the chemical composition of NiMoO₄, two types of sacrificial templates with distinct structures were prepared. Subsequent chemical etching of these sacrificial templates yielded two types of Co_xNi _(1-x)MoO₄ hollow materials. The advantage of this preparation strategy lies in its ability to achieve dual control over the chemical composition and microstructure of the target materials. Electrochemical results show that the cobalt-doped NiMoO₄ with their unique microstructure demonstrated improvements in capacity, rate performance and cycling stability. Under optimal conditions, the maximum capacities of the two Co_xNi _(1-x)MoO₄ electrodes reached 576 and 591 C g^-1, respectively. Hybrid devices assembled from these two battery-type materials delivered energy densities of 41.73 Wh kg^-1 and 44.62 Wh kg^-1 at a power density of 800 W kg^-1. The electrochemical advantages and distinctions between the two Co_xNi _(1-x)MoO₄ materials collectively demonstrate the effectiveness of the dual-control strategy. By constructing specific architectures with tunable compositions based on material characteristics, the electrochemical performance can be significantly enhanced.

高性能电极材料对于非对称储能器件的组装至关重要。以NiMoO4的化学组成为指导，制备了两种结构不同的牺牲模板。随后对这些牺牲模板进行化学蚀刻，得到两种类型的CoxNi (1-x)MoO4空心材料。这种制备策略的优势在于能够实现对目标材料的化学成分和微观结构的双重控制。电化学结果表明，掺杂钴的NiMoO4具有独特的微观结构，其容量、倍率性能和循环稳定性均有显著提高。在最佳条件下，两个CoxNi (1-x)MoO4电极的最大容量分别达到576和591 C g-1。由这两种电池类型材料组装的混合器件在功率密度为800 W kg-1时的能量密度分别为41.73 Wh kg-1和44.62 Wh kg-1。两种CoxNi (1-x)MoO4材料的电化学优势和差异共同证明了双控制策略的有效性。通过基于材料特性构建具有可调成分的特定结构，可以显著提高电化学性能。

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引用次数: 0