Journal of Power Sources最新文献_第6页

Self-supported Ni-Cu catalyst toward ampere level current in urea electrooxidation via multi-active-site coupling 自支撑镍铜催化剂对多活性位点耦合尿素电氧化安培电流的影响

IF 7.9 2区工程技术 Q1 CHEMISTRY, PHYSICAL

Journal of Power Sources

Pub Date : 2026-05-15 Epub Date: 2026-03-06 DOI: 10.1016/j.jpowsour.2026.239796

Zhijiao Ji , Shenghao Zhao , Zhangyou Wang , Lu Hao , Jiawen Li , Fangge Cheng , Mansor Hussain , Wei Su , Jia Liu

Electrocatalytic urea oxidation reaction (UOR) coupled with hydrogen evolution reaction (HER) to construct urea electrolytic cells is an effective method to achieve low energy consumption for hydrogen production. Two-dimensional Ni(OH)₂ has been widely studied in the field of UOR, however, the development of an ampere-level-current UOR catalyst with fast kinetics is still a challenge. Herein, the self-supporting electrode CF/CNM-S with Cu₂S/Mo-doped Ni(OH)₂ was synthesized which integrates multiple structural features including a heterojunction, a super-metastable phase, a sulfidized surface, and a nanoarray architecture. Experiments combined with theoretical study revealed that using a foam copper derivative as the carrier effectively enhanced the loading and dispersion of Ni(OH)₂ nanosheets, while the nanoarray architecture significantly improved mass transport and diffusion. During the UOR process, the molybdenum-doped NiOOH and CuOOH species generated via the self-reconstruction of CF/CNM-S were identified as the true active phases. The resulting hierarchical heterostructure enabled fine-tuning of the surface electronic states, and the super-metastable state induced by molybdenum doping regulated the catalyst's activation capability towards urea molecules, and facilitated the cleavage of C-N bonds and the oxidation of CO intermediates. Consequently, the as-prepared CF/CNM-S electrode achieved a UOR current density of 1006 mA cm⁻² at 1.8 V (vs. RHE) in an electrolyte containing 3 M KOH and 3 M urea.

电催化尿素氧化反应（UOR）结合析氢反应（HER）构建尿素电解槽是实现低能耗制氢的有效方法。二维Ni(OH)2在UOR领域得到了广泛的研究，但开发一种具有快速动力学的安培级电流UOR催化剂仍然是一个挑战。本文合成了Cu2S/ mo掺杂Ni(OH)2的自支撑电极CF/CNM-S，该电极集成了多种结构特征，包括异质结、超亚稳相、硫化表面和纳米阵列结构。实验结合理论研究表明，泡沫铜衍生物作为载体可以有效地增强Ni(OH)2纳米片的负载和分散性，而纳米阵列结构可以显著改善质量的传递和扩散。在UOR过程中，通过CF/CNM-S自重构生成的掺钼NiOOH和CuOOH被确定为真正的活性相。由此产生的分层异质结构使表面电子态得以微调，钼掺杂诱导的超亚稳态调节了催化剂对尿素分子的活化能力，促进了C-N键的断裂和CO中间体的氧化。因此，所制备的CF/CNM-S电极在含有3 M KOH和3 M尿素的电解质中，在1.8 V（相对于RHE）下获得了1006 mA cm - 2的UOR电流密度。

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引用次数: 0

Hierarchical low Pt-loading “core-shell” electrocatalysts for the oxygen reduction reaction in fuel cells 用于燃料电池氧还原反应的分级低pt负载“核-壳”电催化剂

IF 7.9 2区工程技术 Q1 CHEMISTRY, PHYSICAL

Journal of Power Sources

Pub Date : 2026-05-15 Epub Date: 2026-03-04 DOI: 10.1016/j.jpowsour.2026.239733

Gioele Pagot , Keti Vezzù , Angeloclaudio Nale , Francesco Bonaccorso , Paweł J. Kulesza , Iwona A. Rutkowska , Enrico Negro , Thomas A. Zawodzinski , David A. Cullen , Piotr Zelenay , Vito Di Noto

The sluggish kinetics of the oxygen reduction reaction (ORR) hinder cost-effective polymer electrolyte fuel cells (PEFCs), which rely on scarce, expensive platinum-based electrocatalysts (ECs). Here, we present a novel synthesis method for ORR ECs achieving exceptional platinum utilization. The design features a hierarchical “multi-carbon” support comprising carbon nanoparticles interacting with graphene nanoplatelets as the “core”, encapsulated by a porous carbon nitride (CN) “shell”. This configuration promotes strong core/shell interactions and a bimodal active site distribution, consisting of chemically dispersed Pt and Ni single-atom complexes and PtNi_x alloy nanoclusters embedded in the CN shell. These advantages enable high activity and durability, achieving an ORR activity of 1.6 A mg_Pt⁻¹ at 0.9 V vs. RHE-an order of magnitude higher than Pt/C (0.17 A mg_Pt⁻¹). A proof-of-concept PEFC demonstrates a specific power of 12.0 kW g_Pt⁻¹ at 0.60 V. This approach offers a significant step toward more efficient and sustainable PEFC technologies.

氧还原反应（ORR）的缓慢动力学阻碍了聚合物电解质燃料电池（pefc）的成本效益，这种电池依赖于稀缺、昂贵的铂基电催化剂（ECs）。在这里，我们提出了一种新的ORR ECs合成方法，实现了卓越的铂利用率。该设计的特点是分层的“多碳”支撑，包括碳纳米颗粒与石墨烯纳米片相互作用作为“核心”，由多孔氮化碳（CN）“壳”封装。这种结构促进了强核/壳相互作用和双峰活性位点分布，由化学分散的Pt和Ni单原子配合物和嵌入在CN壳中的PtNix合金纳米团簇组成。这些优点使其具有较高的活性和耐久性，与rhee相比，在0.9 V下实现了1.6 A mgPt−1的ORR活性，比Pt/C （0.17 A mgPt−1）高出一个数量级。概念验证PEFC在0.60 V下的比功率为12.0 kW gPt−1。这种方法向更高效和可持续的PEFC技术迈出了重要的一步。

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引用次数: 0

A novel hydrated salt gel with high thermal conductivity and enthalpy for thermal management and thermal runaway prevention in lithium-ion batteries 一种新型高导热高焓水合盐凝胶，用于锂离子电池的热管理和热失控预防

IF 7.9 2区工程技术 Q1 CHEMISTRY, PHYSICAL

Journal of Power Sources

Pub Date : 2026-05-15 Epub Date: 2026-03-07 DOI: 10.1016/j.jpowsour.2026.239813

Zelin Wu , Jiandong Zuo , Xiaoming Fang , Ziye Ling , Zhengguo Zhang

Hydrated salt phase change materials are ideal for battery thermal management due to their flame retardancy and dual-phase temperature regulation. However, leakage, rigidity, and low thermal conductivity limit their application. Here, a novel hydrated salt gel with high enthalpy and high thermal conductivity is developed using disodium hydrogen phosphate dodecahydrate as the phase change material, polyvinyl alcohol and sodium alginate as the carrier matrix, and hydrophilically-modified expanded graphite (HEG) as the thermally conductive filler. HEG overcomes the typical trade-off between heat storage and conduction. With 5 wt% HEG, the hydrated salt gel achieves a latent heat of 194.2 J/g, thermal decomposition enthalpy of 1216 J/g, and thermal conductivity of 2.88 W/(m·K), while maintaining leakage resistance and mechanical robustness in both crystalline and molten states. After 500 cycles, enthalpy loss is only 6.9%. Experiments demonstrate that the hydrated salt gel can reduce the maximum temperature and maximum temperature difference of the battery pack during 2 C discharge to 45.5 °C and 4.6 °C, respectively. It also effectively suppresses thermal runaway propagation, reducing the peak temperature of the thermal runaway cell by 171.3 °C. This work demonstrates a promising material for safe and efficient battery thermal management.

水合盐相变材料由于其阻燃性和双相温度调节特性，是电池热管理的理想材料。然而，泄漏、刚性和低导热性限制了它们的应用。本文以十二水磷酸氢二钠为相变材料，聚乙烯醇和海藻酸钠为载体基质，亲水性改性膨胀石墨（HEG）为导热填料，制备了一种高焓、高导热的新型水合盐凝胶。HEG克服了蓄热和传导之间的典型权衡。在5 wt% HEG条件下，水合盐凝胶的潜热为194.2 J/g，热分解焓为1216 J/g，导热系数为2.88 W/(m·K)，同时在结晶和熔融状态下均保持抗泄漏性和机械稳定性。循环500次后，焓损失仅为6.9%。实验表明，水合盐凝胶可以将电池组在2℃放电时的最高温度和最大温差分别降低到45.5℃和4.6℃。它还有效地抑制了热失控的传播，使热失控电池的峰值温度降低了171.3℃。这项工作展示了一种安全有效的电池热管理材料。

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引用次数: 0

Simultaneous interlayer expansion and structural stabilization of δ-MnO2 via sodium/molybdenum co-doping for ultra-stable aqueous zinc-ion batteries 钠/钼共掺杂超稳定水锌离子电池中δ-MnO2的层间膨胀和结构稳定

IF 7.9 2区工程技术 Q1 CHEMISTRY, PHYSICAL

Journal of Power Sources

Pub Date : 2026-05-15 Epub Date: 2026-03-06 DOI: 10.1016/j.jpowsour.2026.239812

Wujie Gao , Jiayue Feng , Xin Wang , Yishen Zhang , Songcan Wang

Although δ-MnO₂ is a promising cathode for aqueous zinc-ion batteries (AZIBs), its practical application is hindered by structural instability, Mn dissolution, and irreversible phase transitions during cycling. Herein, we address these challenges by developing a dual Na⁺/Mo⁶⁺ doped δ-MnO₂ (NaMo-MnO₂) cathode via a hydrothermal-annealing method. Na⁺ acts as an interlayer pillar to expand the spacing and facilitate Zn²⁺ diffusion, while Mo⁶⁺ doping stabilizes the layered framework and suppresses detrimental phase transitions. This synergistic effect endows NaMo-MnO₂ with exceptional cycling stability (100% capacity retention after 6500 cycles at 3 A g⁻¹) and a high reversible capacity (250 mAh g⁻¹ at 0.1 A g⁻¹). Mechanistic studies reveal that optimized activation (30 cycles) induces an irreversible phase transformation to ZnMnO₃, enabling subsequent stable Zn²⁺/H⁺ co-intercalation and controlled Mn dissolution/deposition. This work provides a rational design strategy for high-performance MnO₂ cathodes in AZIBs.

虽然δ-MnO2是一种很有前途的水性锌离子电池（AZIBs）阴极，但其实际应用受到结构不稳定性、Mn溶解和循环过程中不可逆相变的阻碍。在此，我们通过水热退火方法开发了双Na+/Mo6+掺杂的δ-MnO2 （NaMo-MnO2）阴极来解决这些挑战。Na+作为层间柱，扩大了层间距，促进了Zn2+的扩散，而Mo6+则稳定了层状框架，抑制了有害的相变。这种协同效应赋予了纳米二氧化锰优异的循环稳定性（在3 A g−1下6500次循环后容量保持100%）和高可逆容量（在0.1 A g−1下250 mAh g−1）。机理研究表明，优化的活化（30个循环）诱导了不可逆的ZnMnO3相变，从而实现了随后稳定的Zn2+/H+共插层和可控的Mn溶解/沉积。本研究为azib中高性能二氧化锰阴极的设计提供了一种合理的策略。

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引用次数: 0

Region-aware cross-condition electrochemical parameter identification of high-capacity lithium-ion battery through sequential global–local optimization 基于序贯全局-局部优化的区域感知大容量锂离子电池跨工况电化学参数辨识

IF 7.9 2区工程技术 Q1 CHEMISTRY, PHYSICAL

Journal of Power Sources

Pub Date : 2026-05-15 Epub Date: 2026-03-03 DOI: 10.1016/j.jpowsour.2026.239763

Xu Ge , Ruixiang Zheng , Xiaobo Chen , Wei Shen , Jingbo Qu , Mian Li

The widespread deployment of large-format lithium-ion batteries for grid-scale energy storage demands accurate and computationally tractable electrochemical models tailored to their unique characteristics. Existing parameter identification methods either lack robustness across varying operating conditions or struggle with the high-dimensional, correlated parameter spaces inherent to high-capacity cells. In this paper, we develop a region-aware sequential global–local optimization framework that integrates cross-condition sensitivity analysis, Bayesian exploration, and granular-adaptive local refinement to accurately and efficiently estimate parameters of physics-based battery models. We validate the proposed method using discharge data from a commercial 280 Ah lithium-ion cell across multiple C-rates, demonstrating consistent accuracy and fidelity, particularly in critical state-of-charge regions. Our results reveal the dominant roles of geometric and transport parameters across discharge regimes, offering physically interpretable insights while addressing longstanding challenges in model generalization. This work establishes a rigorous foundation for next-generation battery modeling and management, particularly under the demanding conditions of grid-integrated energy systems.

大规模锂离子电池在电网储能领域的广泛应用，需要精确且计算易于处理的电化学模型，以适应其独特的特性。现有的参数识别方法要么在不同的操作条件下缺乏鲁棒性，要么与高容量单元固有的高维、相关参数空间作斗争。在本文中，我们开发了一个区域感知的序列全局局部优化框架，该框架集成了跨条件敏感性分析，贝叶斯探索和颗粒自适应局部细化，以准确有效地估计基于物理的电池模型的参数。我们使用商用280 Ah锂离子电池在多种c倍率下的放电数据验证了所提出的方法，证明了一致的准确性和保真度，特别是在关键的充电状态区域。我们的研究结果揭示了几何和输运参数在整个排放制度中的主导作用，提供了物理上可解释的见解，同时解决了模型推广中长期存在的挑战。这项工作为下一代电池建模和管理奠定了严格的基础，特别是在电网集成能源系统的苛刻条件下。

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引用次数: 0

Oxygenated iron boride (FeBOx) as a bifunctional electrocatalyst for overall water splitting in prototype electrolyzer 氧合硼化铁（FeBOx）作为双功能电催化剂在原型电解槽中的整体水分解

IF 7.9 2区工程技术 Q1 CHEMISTRY, PHYSICAL

Journal of Power Sources

Pub Date : 2026-05-15 Epub Date: 2026-03-05 DOI: 10.1016/j.jpowsour.2026.239786

Aasiya S. Jamadar , Rupesh S. Pedanekar , Rohit B. Sutar , Suprimkumar D. Dhas , Sung Jin Kim , Jyotiprakash B. Yadav

We report a scalable synthesis of novel oxygenated iron boride (FeBO_x) thin films using the successive ionic layer adsorption and reaction (SILAR) method. The influence of deposition cycle numbers on the structural, morphological, and electrocatalytic properties is systematically examined for both the hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). The FeBO_x catalyst deposited over 100 SILAR cycles exhibits excellent bifunctional activity, requiring overpotentials of only 96 mV for HER and 300 mV for OER at 10 mA cm⁻². Tafel analysis reveals a transition in HER kinetics from a Volmer to a Heyrovsky limited mechanism with increasing deposition cycles, while OER primarily followed the adsorbate evolution mechanism (AEM). Enhanced redox reversibility, larger electrochemically active surface area (ECSA), and improved catalytic site accessibility have been confirmed through cyclic voltammetry. The optimized FeBO_x catalyst demonstrates remarkable stability over 100 h at 10 mA cm⁻², maintaining a stable cell voltage of ∼1.87 V. In a prototype alkaline electrolyzer, the FeBO_x (100 cycles) catalyst sustains 100 h of continuous operation, generating ∼245 mL h⁻¹ of O₂ with a 2:1 H₂:O₂ ratio. These results establish FeBO_x as a durable, cost-effective, and (platinum) Pt-free catalyst for efficient and cost-effective alkaline water splitting.

我们报道了用连续离子层吸附和反应（SILAR）方法可扩展合成新型含氧硼化铁（FeBOx）薄膜。系统地研究了析氢反应（HER）和析氧反应（OER）中沉积循环数对结构、形态和电催化性能的影响。经过100次SILAR循环沉积的FeBOx催化剂表现出优异的双功能活性，在10 mA cm - 2下，HER的过电位仅为96 mV， OER的过电位为300 mV。Tafel分析表明，随着沉积周期的增加，HER动力学从Volmer过渡到Heyrovsky限制机制，而OER主要遵循吸附质演化机制（AEM）。通过循环伏安法证实，氧化还原可逆性增强，电化学活性表面积（ECSA）增大，催化位点可达性提高。优化后的FeBOx催化剂在10 mA cm−2条件下表现出100小时的稳定性，保持稳定的电池电压为1.87 V。在原型碱性电解槽中，FeBOx（100次循环）催化剂持续运行100小时，以2:1的H2:O2比产生~ 245 mL h−1的O2。这些结果表明，FeBOx是一种耐用、经济、无铂（pt）的催化剂，用于高效、经济的碱性水分解。

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引用次数: 0

Rational design and facile synthesis of IrCoMo ternary electrocatalysts supported on reduced graphene oxide for enhanced oxygen evolution reaction in acidic media 还原氧化石墨烯负载的IrCoMo三元电催化剂的合理设计和简便合成，用于酸性介质中增强析氧反应

IF 7.9 2区工程技术 Q1 CHEMISTRY, PHYSICAL

Journal of Power Sources

Pub Date : 2026-05-15 Epub Date: 2026-02-28 DOI: 10.1016/j.jpowsour.2026.239737

Yunbo Xu , Tao Du , Changjian Wang

Reduced graphene oxide (rGO) is widely recognized as an effective catalyst support material. Its utility stems from its ability to provide abundant anchoring sites, which promote nanoparticle nucleation, growth, and robust attachment. More significantly, rGO enhances the intrinsic catalytic activity of the supported nanoparticles through electronic interactions at the metal-support interface. The rGO sheets served as a unique support to anchor ultrasmall, multicomponent Ir-based nanoparticles via a straightforward hydrothermal treatment followed by annealing. The IrCoMo/rGO-600 catalyst in this research achieves an optimal compromise between diminished noble-metal consumption and enhanced catalytic performance in PEMWE applications. It delivers a low overpotential of 211 mV at a current density of 10 mA cm⁻², while also showing excellent long-term stability, which surpasses those of traditional IrO₂ catalysts. Furthermore, the catalyst exhibits remarkable operational stability, maintaining this current density for over 30 h without significant degradation. Thus, the improved electrocatalytic performance of the IrCoMo/rGO-600 catalyst mainly stems from the robust electronic interaction between the IrCoMo atomic components and the graphite support. This interaction increases the electron density of the metal centers, resulting in an optimal electronic configuration for the OER.

还原氧化石墨烯（rGO）被广泛认为是一种有效的催化剂载体材料。它的效用源于它能够提供丰富的锚定位点，从而促进纳米颗粒的成核、生长和牢固的附着。更重要的是，氧化石墨烯通过金属-载体界面上的电子相互作用增强了负载纳米颗粒的内在催化活性。还原氧化石墨烯薄片作为一种独特的支撑物，通过直接的水热处理和退火来锚定超小的多组分ir基纳米颗粒。本研究中的IrCoMo/rGO-600催化剂在减少贵金属消耗和提高PEMWE应用中的催化性能之间实现了最佳折衷。在电流密度为10 mA cm−2的情况下，该催化剂的过电位仅为211 mV，同时具有优异的长期稳定性，优于传统的IrO2催化剂。此外，该催化剂表现出显著的操作稳定性，可以保持该电流密度超过30小时而不会明显降解。因此，IrCoMo/rGO-600催化剂电催化性能的提高主要源于IrCoMo原子组分与石墨载体之间强大的电子相互作用。这种相互作用增加了金属中心的电子密度，导致OER的最佳电子构型。

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引用次数: 0

Robust dynamic operation of high temperature electrolysis solid oxide cells 高温电解固体氧化物电池的鲁棒动态运行

IF 7.9 2区工程技术 Q1 CHEMISTRY, PHYSICAL

Journal of Power Sources

Pub Date : 2026-05-15 Epub Date: 2026-03-05 DOI: 10.1016/j.jpowsour.2026.239770

Zhikuan Zhu , Michael J. Dzara , Heather Slomski , Madeline Van Winkle , Oscar Hathaway , Liam A.V. Nagle-Cocco , Nicholas A. Strange , Brian P. Gorman , Sarah Shulda , Michael C. Tucker

This study evaluates the durability of Ni/YSZ-supported SOECs under dynamic operating conditions relevant to real-world applications. Systematic tests were conducted to assess cell performance under steam cycling (3 to 75% humidified H₂), mode cycling between SOFC and SOEC operation, thermal cycling (150 to 750 °C at OCV, and 600 to 800 °C at 1.3V), and redox cycling (between 50% humidified H₂ and 50% humidified N₂). Steam cycling, mode cycling, and thermal cycling at OCV do not significantly accelerate performance degradation. Thermal cycling at 1.3V caused minimal damage within 600 to 800 °C. Full redox cycling (multi-hour oxidation holds) induced cell structural failure, while partial redox cycling (0.5 h holds) was tolerated. Extensive characterization revealed some material evolution, namely Sr and Co secondary phase formation, within the oxygen electrode due to La_0.6Sr_0.4Co_0.2Fe_0.8O_3-δ instability, especially for steam cycling and mode cycling. Minimal changes were identified within the Ni-YSZ fuel electrodes. These findings provide critical insights into SOEC reliability under dynamic conditions, supporting their application in dynamic or intermittent energy systems.

本研究评估了Ni/ ysz支持的soec在与实际应用相关的动态操作条件下的耐久性。系统测试评估了电池在蒸汽循环（3 - 75%加湿H2）、SOFC和SOEC运行之间的模式循环、热循环（OCV下150 - 750°C， 1.3V下600 - 800°C）和氧化还原循环（50%加湿H2和50%加湿N2）下的性能。蒸汽循环、模式循环和OCV的热循环不会显著加速性能下降。1.3V的热循环在600至800°C范围内造成的损伤最小。完全氧化还原循环（多小时氧化保持）诱导细胞结构破坏，而部分氧化还原循环（0.5小时保持）是可以容忍的。广泛的表征表明，由于La0.6Sr0.4Co0.2Fe0.8O3-δ的不稳定性，氧电极内部产生了一些物质，即Sr和Co二次相的形成，特别是在蒸汽循环和模式循环中。在Ni-YSZ燃料电极中发现了最小的变化。这些发现为SOEC在动态条件下的可靠性提供了重要见解，支持其在动态或间歇性能源系统中的应用。

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引用次数: 0

Onium salt derived N, S and F co-doped porous carbon electrodes for constructing high performance supercapacitors 用于构建高性能超级电容器的氮、硫、氟共掺杂多孔碳电极

IF 7.9 2区工程技术 Q1 CHEMISTRY, PHYSICAL

Journal of Power Sources

Pub Date : 2026-05-15 Epub Date: 2026-03-03 DOI: 10.1016/j.jpowsour.2026.239759

Jiao Wu , Lingxia Liu , Xiao Liang , Yujia Wu , Jiangtao Meng , Jingkuan Li , Chunxiang Jiang

Porous carbon materials are regarded as attractive electrodes for supercapacitor on account of their unique surface area, exceptional charge transport efficiency, and remarkable stability, however, there is still a bottleneck in energy density for electric double-layer energy storage. Heteroatom doping can break through the limitation by enhancing conductivity and introducing pseudo-capacitance. Herein, a straightforward one-step pyrolysis strategy, utilizing onium salts as precursors, has been employed to synthesize carbon materials co-doped with N, S, and F heteroatoms (NSFC-T). Consequently, the optimized NSFC-800 electrode with precisely regulated heteroatom content and calcination temperature delivers 206.9 F g⁻¹ at a current density of 0.5 A g⁻¹. Moreover, it maintains 90.77% of its initial capacitance following 10,000 consecutive cycles. The assembled NSFC-800||NSFC-800 symmetric device achieves an energy density of 5.7 W h kg⁻¹ at a power density of 247.2 W kg⁻¹. Through the rational structural design and synergistic effects of multiple heteratoms doping, the rapid charge/discharge kinetics and cycling stability of NSFCs have been significantly improved.

多孔碳材料以其独特的表面积、优异的电荷输运效率和优异的稳定性被认为是超级电容器极具吸引力的电极，但电双层储能的能量密度仍存在瓶颈。杂原子掺杂可以通过提高电导率和引入伪电容来突破这一限制。本文采用简单的一步热解策略，以铵盐为前体，合成了N、S、F杂原子共掺杂碳材料（NSFC-T）。因此，优化后的NSFC-800电极具有精确调节的杂原子含量和煅烧温度，在0.5 a g−1的电流密度下输出206.9 F g−1。此外，在连续10,000次循环后，它保持其初始电容的90.77%。装配后的NSFC-800||NSFC-800对称器件能量密度为5.7 W h kg−1，功率密度为247.2 W kg−1。通过合理的结构设计和多杂原子掺杂的协同作用，显著提高了nsfc的快速充放电动力学和循环稳定性。

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引用次数: 0

Natural molecular armor: Black bean extract-architected O/N coordination networks enabling durable zinc-air batteries 天然分子盔甲：黑豆提取物构建的O/N协调网络使持久的锌空气电池

IF 7.9 2区工程技术 Q1 CHEMISTRY, PHYSICAL

Journal of Power Sources

Pub Date : 2026-05-15 Epub Date: 2026-03-04 DOI: 10.1016/j.jpowsour.2026.239791

Wenxu Liu , Yunfei Gao , Fang Guo , Yue Yin , Xuerong Zheng , Yujie Qiang , Jinfang Wu , Wenbo Wang

Aqueous zinc-air batteries (ZABs) have emerged as a promising next-generation energy storage technology, offering high theoretical energy density, inherent safety, cost-effectiveness, and environmental sustainability. However, the practical application is hindered by severe zinc anode corrosion, which leads to irreversible capacity loss and limited cycle life. In this study, we introduce black bean extract (BBE) as a sustainable, plant-derived electrolyte additive to effectively address these challenges. Through systematic compositional analysis, we identify catechin, linoleic acid, oligosaccharide, pectin, and vitamin B5 as the active components in BBE, which collectively enable a corrosion inhibition efficiency of ∼90% in 6 M KOH electrolyte. The BBE additive significantly enhances the electrochemical performance of ZABs, delivering a high specific capacity of 810 mAh g⁻¹ and extending the cycling stability to 850 h. A combination of in situ spectroscopic techniques, electrochemical characterization, and theoretical analyses reveal that BBE components adsorb onto zinc anode through O- and N-containing functional groups, forming a protective interface that suppresses both self-corrosion and hydrogen evolution reactions. This work not only demonstrates the feasibility of molecular-level mechanism of plant-derived inhibitors, paving the way for sustainable electrolyte engineering in advanced metal-air battery systems.

水锌空气电池（ZABs）已成为一种有前途的下一代储能技术，具有较高的理论能量密度、固有的安全性、成本效益和环境可持续性。然而，锌阳极严重腐蚀，导致不可逆的容量损失和有限的循环寿命，阻碍了实际应用。在本研究中，我们引入黑豆提取物（BBE）作为一种可持续的植物衍生电解质添加剂，以有效解决这些挑战。通过系统的成分分析，我们鉴定出BBE中的活性成分是儿茶素、亚油酸、低聚糖、果胶和维生素B5，它们共同使BBE在6 M KOH电解质中的缓蚀效率达到约90%。BBE添加剂显著提高了ZABs的电化学性能，提供了810 mAh g−1的高比容量，并将循环稳定性延长至850 h。原位光谱技术、电化学表征和理论分析的结合表明，BBE成分通过含O和含n的官能团吸附在锌阳极上，形成一个保护界面，抑制自腐蚀和析氢反应。这项工作不仅证明了植物源抑制剂分子水平机制的可行性，为先进金属-空气电池系统的可持续电解质工程铺平了道路。

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引用次数: 0