Advanced Energy Materials最新文献

Lumped Circuits Modeling of Dynamic Energy Transfer in Triboelectric Nanogenerators with Nonlinear Electromechanical Coupling 非线性机电耦合摩擦纳米发电机动态能量传递的集总电路建模

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2026-11-10 DOI: 10.1002/aenm.71811

Sajib Roy, Bhaskar Dudem, Md Delowar Hussain, S Ravi P Silva

{"title":"Lumped Circuits Modeling of Dynamic Energy Transfer in Triboelectric Nanogenerators with Nonlinear Electromechanical Coupling","authors":"Sajib Roy, Bhaskar Dudem, Md Delowar Hussain, S Ravi P Silva","doi":"10.1002/aenm.71811","DOIUrl":"https://doi.org/10.1002/aenm.71811","url":null,"abstract":"Powering autonomous electronics, sensors, and wearable systems using small‐scale daily mechanical energy is becoming increasingly important. Triboelectric nanogenerators (TENGs) offer a lightweight, flexible, and adaptable route for such applications, particularly when movements are involved. Here, we present a first‐of‐its‐kind unified dynamic energy‐transfer framework for TENGs, coupling their mechanical and electrical domains through a lumped element‐based equivalent circuit (LEEC) model. The framework captures time‐varying electrostatic behavior and key mechanical parameters, mass, damping, and stiffness, within a single predictive platform, enabling system‐level analysis of dynamic efficiency, impedance, resonance, and power transfer under different excitation conditions. The Thévenin equivalent model reveals that TENG performance is dynamically governed by excitation frequency, resonance, load matching, and surface charge density, approaching a time‐averaged theoretical efficiency of ∼54%. Experimental validation across devices with varied mechanical parameters shows close agreement with theory in electrical response and frequency‐dependent behavior. Furthermore, four borophene‐modified TENGs with different charge‐generation characteristics exhibit a systematic increase in electrical output and an estimated efficiency of up to 14.2% for the examined parameter space, supporting the model‐predicted dependence of energy‐conversion performance on surface charge density. The LEEC‐guided platform enables coupled energy and information harvesting through resonance‐enhanced capacitor charging and self‐powered road‐state sensing.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"23 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterizing Fill Factor Limitations in Perovskite‐Silicon Tandem Solar Cells 钙钛矿-硅串联太阳能电池填充因子限制的表征

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2026-11-10 DOI: 10.1002/aenm.71802

Yueming Wang, Nan Sun, Chris Dreessen, Gaosheng Huang, Alexander Eberst, Kaining Ding, Thomas Kirchartz

{"title":"Characterizing Fill Factor Limitations in Perovskite‐Silicon Tandem Solar Cells","authors":"Yueming Wang, Nan Sun, Chris Dreessen, Gaosheng Huang, Alexander Eberst, Kaining Ding, Thomas Kirchartz","doi":"10.1002/aenm.71802","DOIUrl":"https://doi.org/10.1002/aenm.71802","url":null,"abstract":"Monolithic perovskite‐silicon tandem solar cells have achieved power conversion efficiencies approaching 35%. However, a significant gap remains to their thermodynamic limit, primarily due to fill factor ( FF ) losses. This work presents a methodology to identify the underlying mechanisms of the losses. Electroluminescence characterization reveals the potential FF without series resistance losses but cannot fully explain the observed FF limitations. An additional loss mechanism is the photoshunt, a phenomenon which the parallel shunt resistance apparently reduces under illumination in perovskite solar cells. Using an analytical model, we show that the photoshunt originates from competition between charge extraction, governed by transport‐layer properties and electric field, and recombination in the absorber and at interfaces. An equivalent circuit model quantifies its impact on subcell and tandem FF . Additionally, the two‐diode property of the Si subcell can also influence the tandem FF losses. Measurements on tandem devices under spectrally independent LED illumination show that photoshunt losses can be hidden under bottom‐cell‐limited conditions, explaining the preference for slightly bottom‐cell‐limited tandem designs. Reducing the photoshunt through improved charge transport and reduced recombination could enable operation closer to current matching while minimizing FF and efficiency losses.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"1 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Nonlinear Kinetic Optimization via Strong–Weak Cosolvent Synergy in Aqueous Zinc Batteries 水溶液锌电池中强弱共溶剂协同作用的非线性动力学优化

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2026-11-10 DOI: 10.1002/aenm.71824

Erhai Hu, Jinpeng Song, Gang Wu, Beier Jia, Danyang Wang, Huoliang Gu, Yue Hu, Dong Xia, Zhenxiang Xing, Mingsheng Zhang, Shibo Xi, Hao Wang, Chunshuang Yan, Man‐Fai Ng, Qiang Zhu, Qingyu Yan

{"title":"Nonlinear Kinetic Optimization via Strong–Weak Cosolvent Synergy in Aqueous Zinc Batteries","authors":"Erhai Hu, Jinpeng Song, Gang Wu, Beier Jia, Danyang Wang, Huoliang Gu, Yue Hu, Dong Xia, Zhenxiang Xing, Mingsheng Zhang, Shibo Xi, Hao Wang, Chunshuang Yan, Man‐Fai Ng, Qiang Zhu, Qingyu Yan","doi":"10.1002/aenm.71824","DOIUrl":"https://doi.org/10.1002/aenm.71824","url":null,"abstract":"Cosolvent engineering for aqueous Zn metal batteries has traditionally emphasized thermodynamic stabilization, whereas the kinetic dimension of Zn 2+ charge transfer—particularly in multi‐cosolvent systems—remains far less understood. Here we conduct a systematic study on a dual‐cosolvent electrolyte pairing a strong cosolvent (DMSO) with a weak cosolvent (DMC). Through spatial decoupling, the strong cosolvent directly coordinates to stabilize the primary solvation shell, while the weak cosolvent forms a dynamic outer‐shell buffer. This unique context modulates Zn–ligand binding, facilitates desolvation, and guides the formation of a regulated SEI. Consequently, this architecture preserves comparably high thermodynamic stability while unlocking a nonlinear kinetic optimization exclusive to the dual‐cosolvent regime. Using a multi‐descriptor framework, we demonstrate a ∼40% reduction in the charge‐transfer barrier relative to single‐cosolvent systems. This kinetic enhancement translates into robust practical performance, establishing strong–weak cosolvent synergy as a versatile design principle for next‐generation aqueous batteries.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"18 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual Metal Dopants Advance Near‐Room‐Temperature PbS‐based Thermoelectrics 双金属掺杂剂促进了近室温PbS基热电学的发展

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2026-11-10 DOI: 10.1002/aenm.71817

Zhanxiang Yin, Liqing Xu, Peng Ai, Haoyu Zhang, Mengyuan Zhou, Chao Liang, Taohua Liang, Zhengshang Wang, Lizhong Su, Yu Xiao

{"title":"Dual Metal Dopants Advance Near‐Room‐Temperature PbS‐based Thermoelectrics","authors":"Zhanxiang Yin, Liqing Xu, Peng Ai, Haoyu Zhang, Mengyuan Zhou, Chao Liang, Taohua Liang, Zhengshang Wang, Lizhong Su, Yu Xiao","doi":"10.1002/aenm.71817","DOIUrl":"https://doi.org/10.1002/aenm.71817","url":null,"abstract":"Low‐cost lead sulfide (PbS) exhibits poor near‐room‐temperature (300–573 K) thermoelectric performance, limiting its practical applications. Here, Se/Te alloying coupled with dual‐metal Zn/Ge co‐doping is employed to enhance the near‐room‐temperature thermoelectric performance of n‐type PbS. Se/Te alloying forms a single‐phase PbS 0.5 Se 0.35 Te 0.15 solid solution (PbS(Se/Te)), where alloy‐induced mass and strain fluctuations enhance phonon scattering, reducing the lattice thermal conductivity from ∼2.09 W m −1 K −1 for PbS to ∼0.75 W m −1 K −1 at 300 K without compromising electrical transport. Zn/Ge co‐doping further optimizes carrier transport by regulating lattice defects and tuning carrier density, achieving a high carrier mobility of ∼522 cm 2 V −1 s −1 and an optimized carrier density of ∼1.03 × 10 19 cm −3 . The optimized PbS(Se/Te)+0.6‰Zn+5‰Ge sample exhibits an enhanced power factor of ∼20.23 µW cm −1 K −2 at 300 K, yielding a ZT of ∼0.54 at 300 K and an average ZT of ∼0.80 over 300–573 K. A seven‐pair thermoelectric module achieves a maximum temperature difference (Δ T max ) of ∼33.4 K at T h = 343 K, and a single‐leg device reaches a peak conversion efficiency of ∼7.2% under a temperature difference of 300 K. These results highlight the potential of Zn/Ge co‐doping for advancing n‐type PbS‐based materials toward near‐room‐temperature cooling and low‐grade heat recovery.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"10 1 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synergistic Surface‐Bulk Induction of Uniform Out‐of‐Plane (100) Orientation for High‐Efficiency Perovskite Solar Cells 高效钙钛矿太阳能电池均匀面外（100）取向的协同表面-体感应

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2026-11-10 DOI: 10.1002/aenm.71821

Qihang Sun, Chenyue Wang, Yusong Ding, Zhenhuang Su, Bingchen He, Liujiang Zhang, Meirong Fu, Jihao Zhang, Ziheng Zhang, Lin Tang, Ziqiu Ren, Jianhua He, Xingyu Gao

{"title":"Synergistic Surface‐Bulk Induction of Uniform Out‐of‐Plane (100) Orientation for High‐Efficiency Perovskite Solar Cells","authors":"Qihang Sun, Chenyue Wang, Yusong Ding, Zhenhuang Su, Bingchen He, Liujiang Zhang, Meirong Fu, Jihao Zhang, Ziheng Zhang, Lin Tang, Ziqiu Ren, Jianhua He, Xingyu Gao","doi":"10.1002/aenm.71821","DOIUrl":"https://doi.org/10.1002/aenm.71821","url":null,"abstract":"Perovskite thin films featuring out‐of‐plane oriented (100) crystallographic facets are pivotal for advancing the efficiency and stability of perovskite solar cells, owing to their superior charge transport properties and reduced deep‐level defect density. However, conventional single‐strategy modification approaches are typically constrained by limited control over crystal orientation and spatially heterogeneous orientation distribution, hindering the full exploitation of such beneficial facets. Herein, we present a surface‐bulk synergistic induction strategy that overcomes the limitations of single modification approaches, effectively promoting directional grain alignment and cooperatively guiding ordered out‐of‐plane growth during thermal annealing. Benefiting from the successful fabrication of a perovskite film with a uniform and predominant preferred orientation, the inverted perovskite solar cells achieve a champion power conversion efficiency of 26.98% (certified 26.41%). Furthermore, the homogeneous texture and high intrinsic stability of the (100) facets enable the devices to retain 93.5% of their initial PCE after 1000 h of operational stability testing. This strategy effectively tackles the technical constraints of precursor solution regulation and solid‐state surface treatment, offering a novel research model for the precise modulation of perovskite thin film crystal facets and the secondary growth of polycrystalline thin films.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"26 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374482","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Efficient H 2 O 2 Photosynthesis With Valorization by X‐Packing NDI Cocrystal Catalyst 用X -填料NDI共晶催化剂催化高效h2o2光合作用

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2026-11-10 DOI: 10.1002/aenm.71822

Xiaocai Lv, Jiayuan Wang, Jingheng Deng, Qiang Qi, Shuang Chen, Xiaoyu Han, Yuan Fu, Ruofan Tian, Jia Liu, Xiaotao Zhang, Jikun Li, Shuming Bai, Weigang Zhu

{"title":"Efficient H 2 O 2 Photosynthesis With Valorization by X‐Packing NDI Cocrystal Catalyst","authors":"Xiaocai Lv, Jiayuan Wang, Jingheng Deng, Qiang Qi, Shuang Chen, Xiaoyu Han, Yuan Fu, Ruofan Tian, Jia Liu, Xiaotao Zhang, Jikun Li, Shuming Bai, Weigang Zhu","doi":"10.1002/aenm.71822","DOIUrl":"https://doi.org/10.1002/aenm.71822","url":null,"abstract":"Solar‐driven photocatalytic H 2 O 2 synthesis offers a sustainable and green alternative to the energy‐intensive anthraquinone process. However, coordinated regulation of electron‐transfer (ET) and energy‐transfer (EnT) pathways for efficient H 2 O 2 production remains challenging. Organic charge‐transfer (CT) cocrystals, which reconfigure the energy‐level structure through new intermolecular electronic states, provide a promising avenue to overcome this limitation. Herein, we report a CT cocrystal photocatalyst, DPNDI‐Py, prepared by liquid‐assisted grinding (LAG) of N, N′‐bis(4‐pyridyl)‐1,4,5,8‐naphthalenediimide (DPNDI) and pyrene (Py). The cocrystal harbors an X‐packed donor‐acceptor arrangement, with a crossing angle of 52° between the long axes of DPNDI and Py. Spectroscopic measurements confirm strong intermolecular CT, and transient spectroscopy supports CT‐related excited‐state dynamics and the formation of long‐lived triplet states, while theoretical calculations indicate electronic structure favorable for intersystem crossing (ISC). Mechanistic studies indicate that both EnT and ET pathways are utilized in photocatalysis. Under LED irradiation in air, DPNDI‐Py delivers an average H 2 O 2 production rate of 18.47 ± 0.57 mmol g −1 h −1 coupled with an 83.7 ± 2.26% dehydroascorbic acid (DHA) yield from ascorbic acid (AA) oxidation. This work provides mechanistic insight into CT‐mediated photocatalysis, offering a design principle for organic photocatalysts.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"7 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Competitive Solvation Structure in a Deep Eutectic Electrolyte Enables High‐Voltage LiCoO 2 ‐Based Pouch Cells With 5000‐Cycle Stability 深共晶电解液中的竞争性溶剂化结构使高电压licoo2基袋状电池具有5000循环稳定性

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2026-11-10 DOI: 10.1002/aenm.71818

Huijie Tian, Erlei Zhang, Jialin Wang, Qing Li, Yunyun Lei, Hao Wu, Binyi Chen, Wanbao Wu, Jiaheng Zhang, Qunhui Yuan

{"title":"Competitive Solvation Structure in a Deep Eutectic Electrolyte Enables High‐Voltage LiCoO 2 ‐Based Pouch Cells With 5000‐Cycle Stability","authors":"Huijie Tian, Erlei Zhang, Jialin Wang, Qing Li, Yunyun Lei, Hao Wu, Binyi Chen, Wanbao Wu, Jiaheng Zhang, Qunhui Yuan","doi":"10.1002/aenm.71818","DOIUrl":"https://doi.org/10.1002/aenm.71818","url":null,"abstract":"Anion‐rich solvation structures improve interfacial stability but often impede Li + desolvation, limiting fast‐charging and low‐temperature performance in high‐voltage lithium metal batteries. Unlike conventional high‐concentration or weakly solvating electrolytes, we propose a deep eutectic electrolyte (DEE) using succinonitrile (SN) and dimethyl sulfone (MSM) with competitive coordination capability. This design shifts the Li + solvation from aggregate clusters (AGGs) to a balanced AGGs/contact ion pairs (CIPs) distribution, which lowers the Li + desolvation energy barrier, enhances the transport kinetics, and endows the DEE with an ionic conductivity of 3.87 mS cm −1 and a Li + transference number of 0.81. MSM moderates excessive SN coordination, suppressing parasitic reactions on the anode, thereby enabling stable Li plating/stripping for 6800 h. A lithium bis(trifluoromethanesulfonyl)imide (LiTFSI)/lithium difluoro(oxalato)borate (LiDFOB) dual‐salt system further optimizes interfacial chemistry, yielding a bilayer solid electrolyte interphase comprising an inorganic‐rich inner layer and a flexible organic outer layer. LiCoO 2 ||Li cells retain 97.1% capacity after 1000 cycles at 5C (3.0–4.5 V) and operate stably at −10°C. A 3.0 Ah LiCoO 2 ||Li pouch cell further delivers a high energy density of 417 Wh kg −1 , and LiCoO 2 ||graphite pouch cells sustain long‐term durability over 5000 cycles. This competitive solvation strategy effectively harmonizes kinetics and interfacial robustness for high‐voltage, fast‐charging DEEs.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"20 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2026-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374493","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Understanding Charge Acceptance Limitations During Extreme Fast‐Charging of Li‐ion Batteries 了解锂离子电池在极快充电过程中的充电接受限制

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2026-11-09 DOI: 10.1002/aenm.71806

Ning Guo, Joseph Park, Rohith Srinivaas Mohanakrishnan, Kristin A. Persson, Bryan D. McCloskey

{"title":"Understanding Charge Acceptance Limitations During Extreme Fast‐Charging of Li‐ion Batteries","authors":"Ning Guo, Joseph Park, Rohith Srinivaas Mohanakrishnan, Kristin A. Persson, Bryan D. McCloskey","doi":"10.1002/aenm.71806","DOIUrl":"https://doi.org/10.1002/aenm.71806","url":null,"abstract":"Extreme fast charging in lithium‐ion batteries is limited by their poor charge acceptance at high C‐rates. We use overpotential component analysis to decouple ohmic, kinetic and transport voltage losses during fast charging. The concentration gradients are identified as the primary culprit in poor charge acceptance, so we study carbonate electrolytes that utilize acetonitrile, a low viscosity, high dielectric liquid, as a co‐solvent to improve ion transport. Our results indicate acetonitrile co‐solvent successfully reduces fast charging concentration gradients and therefore improves charge acceptance at high C‐rates, particularly when used in combination with interface‐stabilizing additives. Molecular dynamics simulations show that ACN enhances Li + transport through a combination of reduced bulk viscosity and increased solvation‐shell lability, with shorter solvent residence times and faster coordination exchange producing transport gains beyond those expected from viscosity reduction alone. Finally, we use three‐electrode cells to deconvolute overpotential at each electrode, and the specific LiNi 0.8 Mn 0.1 Co 0.1 O 2 (NMC811) electrode architecture and loading used in our study is found to have much higher overpotentials than our graphite electrode. In particular, the significant differences in NMC811 concentration gradients between electrolytes with or without acetonitrile indicate that the design of electrode architecture is crucial for extreme fast charging applications.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"46 1-3 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2026-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Data‐Driven Host Microstructure Design Toward Efficient and Durable Room‐Temperature Sodium–Sulfur Batteries 面向高效耐用室温钠硫电池的数据驱动主机微观结构设计

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2026-11-09 DOI: 10.1002/aenm.71823

Kai Zhang, Feng Gong, Shaohuan Hong, Shenglin Liu, Zongqi Chen, Hualin Ye, Zihang Ma, Yue Ma, Baiqian Dai, Dawei Xia, Rui Xiao

{"title":"Data‐Driven Host Microstructure Design Toward Efficient and Durable Room‐Temperature Sodium–Sulfur Batteries","authors":"Kai Zhang, Feng Gong, Shaohuan Hong, Shenglin Liu, Zongqi Chen, Hualin Ye, Zihang Ma, Yue Ma, Baiqian Dai, Dawei Xia, Rui Xiao","doi":"10.1002/aenm.71823","DOIUrl":"https://doi.org/10.1002/aenm.71823","url":null,"abstract":"Porous carbon materials are critical hosts for chalcogen‐ and halogen‐based conversion‐type cathodes, as they govern the activity and durability of electrochemical reactions. Understanding how their microstructures regulate electrolyte‐electrode interactions remains challenging given multiple coupling factors and dynamic changes during electrochemical cycling. Herein, machine learning was first used to screen three pore structure parameter windows relevant to electrochemical features from a large experimental dataset (23 carbon hosts and 1055 specific‐capacity data points). Based on these screened windows, three representative carbon hosts, namely micropore‐rich carbon, balanced carbon, and meso/macropore‐rich carbon, were synthesized as model systems. We reveal that pore structure governs sulfur species evolution, thereby dictating the competition between polysulfide‐mediated reactions and solvent self‐decomposition. The resulting spatial‐compositional differences of the cathode–electrolyte interphase (CEI) were found to profoundly impact energy efficiency, reversibility, and rate performance. The balanced carbon cathode with optimized inorganic‐organic distribution delivers an initial capacity of 1249.4 mAh g −1 and retains a capacity of 784.8 mAh g −1 after 500 cycles. This work not only proposes a data‐driven strategy for identifying CEI‐relevant pore structure windows, but also provides mechanistic insight into how physical metrics of porous carbon modulate multi‐step complex reactions and ultimately influence electrochemical performance.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"1 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2026-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Renewable Intermittency Redistributes Catalyst Recovery and Membrane Degradation in Anion Exchange Membrane Water Electrolysis 阴离子交换膜电解中可再生间歇性再分配催化剂回收和膜降解

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2026-11-09 DOI: 10.1002/aenm.71789

Anastasiia Voronova, Sol Kim, June Sung Lim, Jin Young Kim, Hee‐Young Park, Sang Hoon Joo, Jong Hyun Jang, Bora Seo

{"title":"Renewable Intermittency Redistributes Catalyst Recovery and Membrane Degradation in Anion Exchange Membrane Water Electrolysis","authors":"Anastasiia Voronova, Sol Kim, June Sung Lim, Jin Young Kim, Hee‐Young Park, Sang Hoon Joo, Jong Hyun Jang, Bora Seo","doi":"10.1002/aenm.71789","DOIUrl":"https://doi.org/10.1002/aenm.71789","url":null,"abstract":"Renewable intermittency is widely regarded as a durability stressor in water electrolysis, yet its impact on competing degradation and recovery processes within the cell remains unclear. Here, we show that realistic intermittent operation redistributes catalyst recovery and membrane degradation in anion exchange membrane water electrolysis (AEMWE). A Ni–Fe‐based AEMWE single‐cell was operated under high‐resolution, solar‐mimicking load profiles that reproduce day–night intermittency without external buffering. Electrochemical diagnostics reveal reversible changes in activation, Ohmic, and mass‐transport losses, indicating partial performance recovery during zero‐current intervals. In situ X‐ray absorption spectroscopy attributes this behavior to reversible oxidation‐state and coordination changes of Ni and Fe, associated with the reversible formation and relaxation of amorphous (oxy)hydroxide surface layers. In contrast, hydrogen crossover measurements reveal increased crossover under low‐current operation, while post‐mortem membrane analyses provide independent evidence of membrane deterioration, identifying a critical system‐level limitation. These results show that intermittency does not uniformly mitigate degradation but redistributes it across cell components, enabling catalyst self‐restoration while exacerbating membrane vulnerability. This work establishes intermittency as a double‐edged operational parameter and provides a framework for designing materials and operating strategies for durable, battery‐free AEM water electrolysis.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"44 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2026-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149374496","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0