Renewable Energy最新文献_第6页

Experimental study of Overtopping Breakwater for Energy Conversion (OBREC) device under various sea states and structural geometries 不同海况和结构几何条件下的能量转换防波堤（OBREC）装置试验研究

IF 9.1 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy

Pub Date : 2026-01-13 DOI: 10.1016/j.renene.2026.125246

Parisa Setayesh, Mohammad Navid Moghim

The Overtopping Breakwater for Energy Conversion (OBREC) harnesses wave energy by capturing overtopping waves into a reservoir on a rubble mound breakwater, generating electricity via low-head turbines using the water level difference. This study enhances understanding of overtopping behavior under varying OBREC geometries and sea states through 140 two-dimensional experimental tests. A novel dimensionless parameter (H*√T*) was introduced to jointly assess wave height and period effects, alongside a new overtopping parameter (N_OT) accounting for wave breaker type. Results reveal distinct overtopping trends linked to the surf similarity parameter (ξ), with plunging breakers below ξ_m-1,0 = 4.2 and surging breakers above this threshold. The N_OT parameter showed strong predictive capability for both breaker types, achieving coefficients of determination of R² = 88 % and R² = 97 % for plunging and surging breakers, respectively. Ramp geometry significantly influences performance: higher ramps reduce overtopping but increase turbine head, gentler breakwater slopes lower overtopping, while gentler reservoir slopes increase it. A predictive equation was developed for both plunging and surging breakers, achieving R² = 82 % and R² = 84 % with low mean relative errors (E = 0.003 and E = 0.016, respectively; E = 0.008 overall). Compared to the best existing model by Iuppa et al., the proposed formula reduced the mean relative error by approximately 98 % and achieved an average R² of 83 %.

能量转换过顶防波堤（OBREC）通过将过顶波捕获到碎石丘防波堤上的蓄水池中来利用波浪能，通过低水头涡轮机利用水位差发电。该研究通过140个二维实验测试，增强了对不同OBREC几何形状和海况下过顶行为的理解。引入了一个新的无量纲参数（H*√T*）来共同评估波高和周期效应，以及一个新的超顶参数（NOT）来考虑破浪器类型。结果显示，与冲浪相似参数（ξ）相关的明显过顶趋势，俯冲型断路器低于ξm-1,0 = 4.2，而浪涌型断路器高于该阈值。NOT参数对两种断路器均具有较强的预测能力，对陡冲式断路器和浪涌式断路器的决定系数分别达到R2 = 88%和R2 = 97%。坡道几何形状显著影响性能：较高的坡道减少过顶，但增加水轮机水头，较缓的防波堤坡度降低过顶，而较缓的水库坡度增加过顶。建立了一个预测方程，分别适用于突降式和突升式破碎机，R2 = 82%和R2 = 84%，平均相对误差较低（分别为E = 0.003和E = 0.016；总体E = 0.008）。与Iuppa等人现有的最佳模型相比，本文提出的公式将平均相对误差降低了约98%，平均R2达到83%。

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引用次数: 0

Flow and combustion process investigation of a hydrogen-ammonia rotary engine under ammonia premixed plus hydrogen direct injection mode 氨预混加氢直喷模式下氢-氨旋转发动机流动与燃烧过程研究

IF 9.1 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy

Pub Date : 2026-01-13 DOI: 10.1016/j.renene.2026.125273

Weibiao He , Guohui Zhu , Qingsong Zuo , Chuanfu Kou , Dezhong Ning , Hui Wang , Wei Chen

The development of zero-carbon fuel engines is crucial for the transportation industry to achieve carbon reduction goals. Hydrogen and ammonia-fueled engine power systems are becoming attractive research directions since their perfectly complementary combustion characteristics. Thus, a hydrogen-ammonia dual-fuel combustion means for rotary engines is proposed, and a numerical model based on parametric modeling and chemical reaction kinetics characterization is established. Then, the influence of the hydrogen energy ratio (HER), ranging from 5 % to 45 %, on mixture formation and combustion processes of the hydrogen-ammonia engine under the ammonia premixed plus hydrogen direct-injection mode is investigated. Results show that the hydrogen combustion-enhanced effect on ammonia is obvious with HER increases, however, when HER is less than 5 %, an ignition failure phenomenon is observed. As HER increases, the combustion performance improves with higher fuel utilization rate and fast heat release. At ignition timing, a higher HER will lead to more hydrogen concentration near the spark plug, which can reduce flame quench probability due to high ammonia concentrations. Blending hydrogen is a promising combustion enhancement means for ammonia combustion, and suggests designing HER higher than 35 % for parametric applications, whose peak pressure and fuel utilization rate are higher than 5.5 MPa and 97 %, respectively.

发展零碳燃料发动机对于交通运输行业实现碳减排目标至关重要。氢燃料和氨燃料发动机动力系统由于其完全互补的燃烧特性而成为有吸引力的研究方向。为此，提出了一种用于旋转发动机的氢氨双燃料燃烧方式，并建立了基于参数化建模和化学反应动力学表征的数值模型。然后，在氨预混加氢直喷模式下，研究了5% ~ 45%的氢能比（HER）对氢氨发动机混合气形成和燃烧过程的影响。结果表明：随着HER的增加，氢气对氨的助燃效果明显，但当HER小于5%时，会出现点火失败现象。随着HER的增加，燃烧性能得到改善，燃料利用率提高，热量释放快。在点火时刻，较高的HER会导致火花塞附近的氢气浓度增加，这可以减少由于高浓度氨而导致的火焰猝灭概率。掺氢是一种很有前途的氨燃烧增强手段，建议在参数化应用中设计高于35%的HER，峰值压力和燃料利用率分别高于5.5 MPa和97%。

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引用次数: 0

A novel and low-cost mechanism for comprehensive PV fault diagnosis using optocouplers 基于光电耦合器的新型低成本光伏综合故障诊断机制

IF 9.1 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy

Pub Date : 2026-01-13 DOI: 10.1016/j.renene.2026.125268

Kashif Habib , Muhammad Sarwar Ehsan , Ali Faisal Murtaza

Photovoltaic Systems (PVS), the key contributor towards clean energy, are highly prone to DC faults, leading to potential energy losses, lifespan reduction, and safety risks. Accurate fault detection, classification, and localization (FDCL) is thus critical for reliable PVS operation. This work proposes a novel idea of comprehensive DC-side FDCL of PV arrays by only utilizing low-cost opto-couplers. Opto-couplers are strategically placed with modules and blocking diodes, and their digital states are used to develop a combinational algorithm. The algorithm effectively identifies the faults, classifies them, and then signals for tripping with minimal disruption. The supportive simulation results show a clear confirmation of the idea. With simplicity, scalability, and cost-effectiveness, the presented method poses high potential for integration into a PV system without a notable impact on production cost and system size.

光伏系统（pv）是清洁能源的关键贡献者，它极易发生直流故障，导致潜在的能量损失、寿命缩短和安全风险。因此，准确的故障检测、分类和定位（FDCL）对于pv的可靠运行至关重要。本研究提出了一种仅利用低成本光耦合器实现光伏阵列直流侧FDCL的新思路。将光耦合器与模块和阻塞二极管策略性地放置在一起，并利用其数字状态来开发组合算法。该算法有效地识别故障，对其进行分类，然后在最小干扰的情况下发出跳闸信号。支持性仿真结果清楚地证实了这一想法。该方法具有简单、可扩展性和成本效益，具有很高的集成到光伏系统的潜力，而不会对生产成本和系统规模产生显着影响。

引用次数: 0

Correlation for convective heat transfer coefficient of a solar still glass cover with mixed convection consideration 考虑混合对流的太阳能蒸馏器玻璃罩对流换热系数的相关性

IF 9.1 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy

Pub Date : 2026-01-13 DOI: 10.1016/j.renene.2026.125266

Arvind Kumar Kaushal

In the present work, a series of experiments were carried out on the floating wick basin type vertical multiple effect diffusion solar still with waste heat recovery (FW-BVMED-HR) to determine the convective heat transfer coefficient h_c from the outer glass cover surface with mixed convection consideration existing in low wind conditions. Time-averaged hourly values of Ra_L, Re_L and Nu_L numbers were determined from experimentally measured variables and a correlation for Nusselt number Nu_L was found from non-linear regression analysis, which had a mean deviation of only 17 % from the experimental values. The h_c values from correlations by previous researchers significantly overestimate the h_c values, since they have neglected the influence of free convection effects at low wind conditions. Further, in the range of experiments carried out, the effect of the free convection was found to cause a reduction in the total heat transfer.

在低风条件下，利用浮芯盆式垂直多效应扩散余热回收太阳能蒸馏器（FW-BVMED-HR）进行了一系列实验，确定了混合对流条件下玻璃罩外表面对流换热系数hc。RaL、ReL和NuL数的时间平均小时值由实验测量变量确定，Nusselt数NuL与非线性回归分析存在相关性，与实验值的平均偏差仅为17%。先前研究人员从相关中得到的hc值明显高估了hc值，因为它们忽略了低风条件下自由对流效应的影响。此外，在进行的一系列实验中，发现自由对流的影响导致总传热的减少。

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引用次数: 0

Enhanced bioethanol production from poplar by Tween 80-assisted acid pretreatment coupled with sulfite detoxification 吐温80辅助酸预处理联合亚硫酸盐脱毒提高杨树生物乙醇产量

IF 9.1 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy

Pub Date : 2026-01-13 DOI: 10.1016/j.renene.2026.125287

Yequan Sheng , Li Wen , Xin Tan , Chenhuan Lai

Acid pretreatment is one of the most prevalent pretreatment methods for bioethanol production by efficiently hydrolyzing hemicellulose and breaking down the dense structure of lignocelluloses. However, it exhibits limited delignification efficiency and produces inhibitors that can obviously hinder the subsequent enzymatic hydrolysis and yeast fermentation. This study developed a novel strategy integrating Tween 80-assisted acid pretreatment with sulfite detoxification to enhance bioethanol production from poplar. Sodium sulfite assistance (2–6 % w/w) in acid pretreatment suppressed inhibitor production, reducing up to 72.8 % furfural and 85.1 % HMF, while dramatically increasing fermentability of unfermentable acid prehydrolysate with at most 6.57 g/L ethanol yielded from 20 g/L glucose. Tween 80 assistance (2–6 % w/w) in acid pretreatment improved xylose extraction to up to 16.91 g/L in prehydrolysate, while increasing the saccharification yield for enzymatic hydrolysis of pretreated substrates by 67.0 %–88.2 %. But it failed to mitigate inhibition during fermentation. In situ detoxification with 6 % sulfite and 6 % Tween 80 in pretreatment enhanced the glucose consumption rate, whereas the enzyme-hydrolyzed glucose yield from pretreated substrates only slightly improved by 4.4 %. Subsequent sulfite detoxification of Tween 80-assisted prehydrolysates showed excellent effect on boosting yeast fermentation. Therefore, subsequent sulfite detoxification was integrated with Tween 80-assisted acid pretreatment with significantly enhanced bioethanol production from pretreated poplar during simultaneous saccharification and fermentation (SSF), increasing yields from 0.31 g/L to 3.13 g/L. This work effectively addressed lignocellulosic recalcitrance and inhibitor generation of acid pretreatment with a combined chemical-additive assistance and post-detoxification strategy to maximize bioethanol productivity from woody biomass.

酸预处理是生物乙醇生产中最常用的预处理方法之一，它能有效地水解半纤维素和分解木质纤维素的致密结构。然而，它表现出有限的脱木质素效率，并产生抑制剂，可以明显阻碍后续酶解和酵母发酵。本研究提出了一种将Tween 80辅助酸预处理与亚硫酸盐解毒相结合的新策略，以提高杨树生物乙醇的产量。亚硫酸钠辅助（2 - 6% w/w）在酸预处理中抑制了抑制剂的产生，降低了高达72.8%的糠醛和85.1%的HMF，同时显著提高了不可发酵的酸预水解产物的发酵性，从20 g/L葡萄糖中产生最多6.57 g/L的乙醇。在酸预处理条件下，Tween 80 （2 - 6% w/w）可使预水解木糖的提取率提高到16.91 g/L，同时使预处理底物的酶解糖化率提高67.0% - 88.2%。但它未能减轻发酵过程中的抑制作用。6%亚硫酸盐和6%吐温80预处理的原位解毒提高了葡萄糖消耗率，而预处理底物的酶解葡萄糖产量仅略微提高4.4%。Tween 80辅助预水解物的亚硝酸盐解毒对酵母发酵有很好的促进作用。因此，将随后的亚硫酸盐解毒与Tween 80辅助酸预处理相结合，可显著提高预处理杨树在同步糖化发酵（SSF）过程中的生物乙醇产量，将产量从0.31 g/L提高到3.13 g/L。这项工作有效地解决了木质纤维素的顽固性和酸预处理抑制剂的产生，结合了化学添加剂辅助和后解毒策略，以最大限度地提高木质生物质的生物乙醇产量。

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引用次数: 0

Optimizing solar still performance: A numerical study on the feasibility of water film cooling over the glass cover 优化太阳能蒸馏器性能：玻璃罩上水膜冷却可行性的数值研究

IF 9.1 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy

Pub Date : 2026-01-13 DOI: 10.1016/j.renene.2026.125269

Reda Aftiss , Monssif Najim , Taoufik Tbatou , Mohamed Hissouf

The present paper aims to investigate the effect of glass cooling technique on the productivity of solar still. Three systems are analysed and compared: conventional type, solar still with film cooling (SSF), and solar still with double glass film cooling (SSD). The impact of thermal insulation in relation to the glass cooling is extensively examined. A numerical simulation of the transient energy equations in two dimensions, incorporating a nodal approach in the third dimension, is used in this study. The implicit finite difference method is adopted to solve the system of equations. To ensure the accuracy and validity of our model, the present results are compared with experimental findings existing in the literature. The results indicate that the use of double glass cooling decreases the productivity compared to single glass cooling (SSF). Additionally, under optimal insulation, the integration of the cooling system reduces the productivity of the conventional type by approximately 22.27%. However, for low thermal insulation (14 W/m² K), the SSF system achieves maximum daily productivity, approximately 3.58 kg/m² day.

研究了玻璃冷却技术对太阳能蒸馏器生产效率的影响。分析比较了常规型、膜冷却太阳能蒸馏器（SSF）和双层玻璃膜冷却太阳能蒸馏器（SSD）三种系统。隔热对玻璃冷却的影响进行了广泛的研究。本研究采用了二维瞬态能量方程的数值模拟，并结合了三维的节点方法。采用隐式有限差分法求解方程组。为了保证模型的准确性和有效性，本文的结果与文献中已有的实验结果进行了比较。结果表明，与单玻璃冷却相比，双玻璃冷却降低了生产效率。此外，在最佳隔热条件下，集成冷却系统可使传统类型的生产率降低约22.27%。然而，对于低绝热（14 W/m2 K）， SSF系统实现了最大的日生产率，约为3.58 kg/m2天。

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引用次数: 0

High-performance composite molten salt thermal energy storage material based on resources recovery from waste salt for concentrated solar power applications 基于废盐资源回收的高性能复合熔盐储能材料用于聚光太阳能发电

IF 9.1 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy

Pub Date : 2026-01-13 DOI: 10.1016/j.renene.2026.125278

Shaobo Xi , Fei Liang , Xiaolan Wei , Jing Ding , Weilong Wang , Shule Liu , Jianfeng Lu

Due to wide operating temperature range and low cost, chloride molten salts have been extensively considered as potential heat transfer medium for concentrating solar power. In this work, composite energy storage material with molten salt and carbon sphere is efficiently prepared by waste salt, and its enhancement mechanism of thermal property is investigated. By hydrothermal reaction and carbonization, the organic pollutants in waste salt can be changed to carbon spheres, which exhibit high graphitization degree and excellent light absorption property. After preparation of waste salt-based composite molten salt, the latent heat of Salt-2.0 % can reach 221.1 J/g. With the increase of carbon sphere content, the specific heat capacity of composite molten salt shows 27.2 % higher than pure molten salt. And the thermal conductivity can increase to 0.44 W/(m·K) with 2.0 wt% carbon sphere content, representing an improvement of 15.8 %. According to molecular dynamics research, the simulated thermal properties agree well with experimental data, and the enhancement of thermal conductivity is attributed to the synergistic effect of system potential and kinetic energy increment. After continuous service, the composite molten salt has excellent thermal stability, which is used as low-cost and high-performance energy storage material for solar power applications.

由于工作温度范围宽，成本低，氯化物熔盐被广泛认为是聚光太阳能发电的潜在传热介质。本文利用废盐高效制备了熔盐-碳球复合储能材料，并对其热性能增强机理进行了研究。通过水热反应和炭化，废盐中的有机污染物可以转化为碳球，具有高石墨化程度和优异的吸光性能。制备出废盐基复合熔盐后，盐- 2.0%的潜热可达221.1 J/g。随着碳球含量的增加，复合熔盐的比热容比纯熔盐高27.2%。当碳球含量为2.0 wt%时，导热系数可提高到0.44 W/(m·K)，提高了15.8%。分子动力学研究表明，模拟的热性能与实验数据吻合较好，热导率的提高是由于体系势能和动能增量的协同作用。经连续使用后，复合熔盐具有优异的热稳定性，可作为太阳能发电应用的低成本高性能储能材料。

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引用次数: 0

Understanding changes in hydrolyzability and lignin performance of Camellia oleifera shell in milder tetrahydro-2-furanmethanol/ferric chloride system 四氢-2-呋喃甲醇/氯化铁温和体系中油茶壳水解性能和木质素性能的变化

IF 9.1 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy

Pub Date : 2026-01-13 DOI: 10.1016/j.renene.2026.125265

Song Tang , Bin Yan , Yan-ling Yu , Xin Tan , Rukuan Liu , Yequan Sheng , Bangxiang He , Yuanli Wang , Qian Dong , Fei Zhou , Tao Yang , Qin Zhang

Camellia oleifera Able shell presents abundant annual production but lacks effective and comprehensive valorization techniques. The aim of this study was to develop a promising pretreatment method for achieving comprehensive utilization of Camellia oleifera Able shell. Pretreatment of ethanol-extracted Camellia oleifera shells (ECOS) was proposed using tetrahydro-2-furanmethanol (THFA) at 170 °C with no holding time and 0.037 mol/L FeCl₃, achieving 93 % cellulose recovery and 85 % lignin removal. The pretreated ECOS surface became fragmentary with lower negative charges and higher thermal stability. The specific surface area of the pretreated ECOS increased by 24.6 times to 6.15 m²/g, correspondingly, the glucose yield rose by 5.0 times than that of untreated ECOS. Addition of PEG10000 promoted the high-solids fed-batch enzymolysis of pretreated ECOS, yielding 95 g/L glucose concentration in the hydrolysate at 15 % solid with 5 FPU/g. Furthermore, this pretreatment effectively deconstructed the natural lignin-carbohydrate complex, while simultaneously removing substantial quantities of acetyl groups. The recovered lignin fragments exhibited excellent enhancement in terms of high UV absorption capacity and fluorescence intensity. The THFA-FeCl₃ pretreatment demonstrated significant potential for the production of fermentable sugars and high-performance lignin from highly lignified biomass.

油茶叶壳年产量丰富，但缺乏有效的综合增值技术。本研究旨在为油茶壳的综合利用开发一种有前途的预处理方法。采用四氢-2-呋喃甲醇（THFA）在170℃、0.037 mol/L FeCl3条件下对乙醇提取的油茶壳（ECOS）进行预处理，纤维素回收率为93%，木质素去除率为85%。预处理后的ECOS表面呈碎片状，负电荷较低，热稳定性较高。预处理后的ECOS比表面积增加了24.6倍，达到6.15 m2/g，葡萄糖产率比未处理的ECOS提高了5.0倍。PEG10000的加入促进了预处理ECOS的高固相补料分批酶解，在固相率为15%、5 FPU/g时，水解产物中葡萄糖浓度为95 g/L。此外，这种预处理有效地解构了天然木质素-碳水化合物复合物，同时去除了大量的乙酰基。回收的木质素片段在高紫外吸收能力和荧光强度方面表现出优异的增强效果。THFA-FeCl3预处理显示了从高度木质化生物质中生产可发酵糖和高性能木质素的巨大潜力。

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引用次数: 0

Assessing a sustainable aviation fuel supply chain from winter canola and its carbon intensity considering feedstock yield variations 考虑原料产量变化的冬季油菜籽可持续航空燃料供应链及其碳强度评估

IF 9.1 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy

Pub Date : 2026-01-13 DOI: 10.1016/j.renene.2026.125291

K. Bolakhe , T.E. Yu , V.R. Sykes , S.A. Smith , C.N. Boyer

Replacing conventional aviation fuel (CAF) with sustainable aviation fuel (SAF) has been suggested as a vital means to decarbonize the aviation industry. We considered winter canola a feedstock for SAF production through the hydro-processed esters and fatty acids pathway in the Southeast United States. We incorporated feedstock yield variations in a stochastic mixed-integer linear programming model to optimize the SAF supply chain. Results suggest the potential SAF production for Nashville International Airport (BNA), from an existing oil extraction mill and 0.19 million hectares (ha) of winter canola cultivation, range from 129 million liters yearly (MLY) to 246 MLY with a 90 % likelihood. With additional investment and expanded winter canola cultivation to 0.61 million ha, the expected SAF supply to BNA could increase to 348 MLY. An additional 212 MLY can be supplied to Memphis International Airport. After considering the co-product revenues, the expected breakeven cost for SAF is $1.1 per liter. The SAF's carbon intensity falls into the range from 31 g of carbon dioxide equivalent per megajoule of fuel (g CO₂e MJ⁻¹) to 43 g CO₂e MJ⁻¹, with 90 % probability, which is at least 50 % lower than CAF.

以可持续航空燃料替代传统航空燃料已被认为是实现航空业脱碳的重要手段。我们认为冬季油菜籽是美国东南部通过加氢酯和脂肪酸途径生产SAF的原料。我们将原料产量变化纳入随机混合整数线性规划模型，以优化SAF供应链。结果表明，纳什维尔国际机场（BNA）的潜在SAF产量，从现有的榨油厂和19万公顷（ha）的冬季油菜种植，从每年1.29亿升（MLY）到每年246万升（MLY），有90%的可能性。随着额外的投资和将冬季油菜籽种植面积扩大到61万公顷，预计对BNA的SAF供应可能增加到348万吨。另外还可以向孟菲斯国际机场提供212 m。在考虑了副产品收入后，SAF的预期盈亏平衡成本为每升1.1美元。SAF的碳强度范围从每兆焦耳燃料31 g二氧化碳当量（g CO2e MJ - 1）到43 g CO2e MJ - 1，概率为90%，比CAF低至少50%。

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引用次数: 0

Heteroatom-enriched multiscale porous carbon from Semen Cassiae for high-energy supercapacitors 高能超级电容器用决明子杂原子富集多尺度多孔碳

IF 9.1 1区工程技术 Q1 ENERGY & FUELS

Renewable Energy

Pub Date : 2026-01-13 DOI: 10.1016/j.renene.2026.125270

Pinghua Zhang , Yangyang Li , Yuling Liu , Zheng Luo , Tiantian Gao , Lijie Kan , Mengru Zhang , Wenzhu Ouyang , Ligang Zhang , Chong Chen , Dejin Zhang , Yunpeng Zhao

We report a heteroatom-enriched multiscale porous carbon (SC-HMPC-4-700) synthesized via a green, single-step KOH activation of Semen Cassiae biomass. This process achieves simultaneous in situ doping with N (2.8 at%), O (10.4 at%), P (1.1 at%), and S (1.2 at%), reaching a total heteroatom content of 15.5 at%. The resulting carbon exhibits an interconnected tri-modal (micro/meso/macro) pore network and a highly developed surface area of 3097.2 m² g⁻¹. Such an architecture synergistically enhances ion diffusion, electrolyte infiltration, and charge storage kinetics. As an electrode in alkaline medium, SC-HMPC-4-700 delivers an elevated capacitance of 360 F g⁻¹ at 0.5 A g⁻¹ and maintains 292 F g⁻¹ at 20 A g⁻¹, reflecting outstanding high-rate stability supported by both electric double-layer and pseudocapacitive contributions. Fabricated as a symmetric cell using 1-ethyl-3-methylimidazolium tetrafluoroborate-based electrolyte, the as-prepared electrode achieves 280 F g⁻¹, retains 90.7 % capacitance over 10,000 cycling tests, and offers an energy density of 119.1 Wh·kg⁻¹ at 875 W kg⁻¹. These results underscore the promise of Semen Cassiae-derived carbon as a high-energy electrode material, and highlight the critical interplay between heteroatom functionality and the pore hierarchy in advanced energy storage systems.

我们报道了一种富含杂原子的多尺度多孔碳（SC-HMPC-4-700）通过绿色，单步KOH活化的决明子生物质合成。该工艺实现了同时原位掺杂N （2.8 at%）、O （10.4 at%）、P （1.1 at%）和S (1.2 at%)，总杂原子含量达到15.5 at%。所得碳呈现出相互连接的三模态（微/中/宏观）孔网络和高度发达的表面积为3097.2 m2 g−1。这样的结构协同增强离子扩散、电解质渗透和电荷存储动力学。作为碱性介质中的电极，SC-HMPC-4-700在0.5 A g−1时可提供360 F g−1的高电容，在20 A g−1时可保持292 F g−1，反映出双电层和假电容贡献支持的出色的高速率稳定性。采用1-乙基-3-甲基咪唑四氟硼酸盐电解质制成对称电池，制备的电极达到280 F g−1，在10,000次循环测试中保持90.7%的电容，并在875 W kg−1时提供119.1 Wh·kg−1的能量密度。这些结果强调了决明子衍生碳作为一种高能电极材料的前景，并强调了杂原子功能与先进储能系统中孔隙结构之间的关键相互作用。

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引用次数: 0