Advanced Energy Materials最新文献_第2页

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

Rational Terminal‐Group Engineering of Guest Acceptors for 20.7% Efficient Organic Solar Cells 20.7%高效有机太阳能电池客体受体的合理端群工程

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2026-11-07 DOI: 10.1002/aenm.71788

Yongchao Hu, Jinrong Shi, Zhenyu Chen, Shanshan Qin, Jinfeng Ge, Hongchen Rong, Pengfei Ding, Tao Zhang, Deping Qian, Kangqiao Ma, Kang Wang, Ziyi Ge

{"title":"Rational Terminal‐Group Engineering of Guest Acceptors for 20.7% Efficient Organic Solar Cells","authors":"Yongchao Hu, Jinrong Shi, Zhenyu Chen, Shanshan Qin, Jinfeng Ge, Hongchen Rong, Pengfei Ding, Tao Zhang, Deping Qian, Kangqiao Ma, Kang Wang, Ziyi Ge","doi":"10.1002/aenm.71788","DOIUrl":"https://doi.org/10.1002/aenm.71788","url":null,"abstract":"Achieving higher efficiency in organic solar cells requires simultaneous control over energy‐level alignment, acceptor aggregation, and active‐layer crystallization. Herein, two guest acceptors, S‐SMA and AS‐SMA, were designed by stepwise replacing the fluorinated terminal group of L8‐BO with a weaker electron‐withdrawing 2‐(3‐ethyl‐4‐oxothiazolidin‐2‐ylidene)malononitrile (CN‐Rh) unit. This terminal‐group engineering upshifts the acceptor energy levels, enables cascade the lowest unoccupied molecular energy levels among D18, the guest acceptor, and L8‐BO, and regulates blend morphology. In situ spectroscopic analysis reveals that both guest acceptors accelerate the liquid‐to‐solid transition during film formation and promote tighter molecular packing. Compared with symmetric S‐SMA, asymmetric AS‐SMA enables a more favorable morphology and device operation, as reflected by suitable domain sizes, suppressed trap‐assisted recombination, and more balanced charge transport. Consequently, the ternary D18:L8‐BO:AS‐SMA device delivers the best overall photovoltaic performance, achieving a power conversion efficiency (PCE) of 20.71% with an open‐circuit voltage ( V OC ) of 0.930 V and a fill factor (FF) of 80.62%. These results demonstrate that asymmetric terminal‐group engineering is an effective strategy for coordinating energy‐level tuning, crystallization kinetics, and morphology optimization in high‐performance ternary organic solar cells.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"6 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2026-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149359781","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

Fully Roll‐to‐Roll Coated Large‐Area Perovskite Solar Modules on Indium‐Free Microgroove Substrates 无铟微槽衬底上全卷对卷涂覆大面积钙钛矿太阳能组件

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2026-11-07 DOI: 10.1002/aenm.71703

Nathan S. Hill, Freddie White, Sophia Baker, Timothy Thornber, Farshad Jafarzadeh, Jazib Ali, George Koutsourakis, Lavanya Malarkannan, James Blakesley, Jessica M. Walker, Trevor McArdle, Roderick C.I Mackenzie, David G. Lidzey, Dumitru Sirbu

{"title":"Fully Roll‐to‐Roll Coated Large‐Area Perovskite Solar Modules on Indium‐Free Microgroove Substrates","authors":"Nathan S. Hill, Freddie White, Sophia Baker, Timothy Thornber, Farshad Jafarzadeh, Jazib Ali, George Koutsourakis, Lavanya Malarkannan, James Blakesley, Jessica M. Walker, Trevor McArdle, Roderick C.I Mackenzie, David G. Lidzey, Dumitru Sirbu","doi":"10.1002/aenm.71703","DOIUrl":"https://doi.org/10.1002/aenm.71703","url":null,"abstract":"Perovskite photovoltaics offer a promising route to low‐cost, low‐carbon solar energy, but progress toward largescale deployment is limited by manufacturing scalability, stability, and dependence on scarce materials. We demonstrate fully roll‐to‐roll coated, large‐area back‐contact perovskite photovoltaic modules based on a microgroove architecture that removes the need for transparent conductors such as Indium Tin Oxide (ITO). Devices are continuously manufactured on flexible substrates using scalable embossing, vacuum deposition, solution printing, and encapsulation. Modules with active areas up to 48.2 cm 2 achieve record power conversion efficiencies exceeding 12.5 % and are further scaled to panels larger than 1000 cm 2 . The first comprehensive stability study of fully roll‐to‐roll coated perovskite modules is presented, including ISOS‐compliant accelerated ageing and up to five months of outdoor operation. Nanoscale x‐ray fluorescence tomography identifies key degradation pathways within the microgroove architecture. In addition to scalable fabrication, the architecture enables intrinsic bifaciality, improved angular response, and linear shading tolerance, enhancing real‐world energy yield and supporting sustainable largescale deployment beyond conventional photovoltaics.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"55 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2026-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149359774","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

Anchoring LiZn Nanocrystals With Oligomer Binders for Enhanced Interfacial Stability in Lithium Metal Batteries 用低聚物粘合剂锚定LiZn纳米晶体增强锂金属电池界面稳定性

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2026-11-07 DOI: 10.1002/aenm.71814

Zheng Wang, Xin Shen, Feng Jiang, Yun‐Fei Du, Nai‐Lu Shen, Ke‐Feng Ren, Tao Wang, Zhi Zhu, Yiren Zhong, He Liu, Xinyan Liu, Hong‐Jie Peng, Yuping Wu, Xin‐Bing Cheng

{"title":"Anchoring LiZn Nanocrystals With Oligomer Binders for Enhanced Interfacial Stability in Lithium Metal Batteries","authors":"Zheng Wang, Xin Shen, Feng Jiang, Yun‐Fei Du, Nai‐Lu Shen, Ke‐Feng Ren, Tao Wang, Zhi Zhu, Yiren Zhong, He Liu, Xinyan Liu, Hong‐Jie Peng, Yuping Wu, Xin‐Bing Cheng","doi":"10.1002/aenm.71814","DOIUrl":"https://doi.org/10.1002/aenm.71814","url":null,"abstract":"Lithium (Li) metal batteries have emerged as one of the most promising candidates for next‐generation energy storage systems due to the potentially high energy density. Nevertheless, repeated interfacial breakdown causes a short lifespan and poor safety. Inspired by the role of plant root systems in anchoring soil, an oligomer‐anchored LiZn nanocrystal composite interphase is constructed on the Li metal anode via a simple spray‐coating strategy, simultaneously enhancing the electrochemical stability and thermal safety of Li metal batteries. The LiZn alloy in the composite interphase restructures the interface energy distribution and reduces the local current density, thereby facilitating uniform lateral Li deposition. The oligomer serves as a binder to glue LiZn particles together and preserve the structural integrity of the interphase. A Li||LiNi 0.5 Co 0.2 Mn 0.3 O 2 coin cell with the composite interphase exhibits a lifespan of 700 cycles at 1 C with a high cathode loading of 3.06 mAh cm −2 . The 1.38 Ah Li||LiNi 0.8 Co 0.1 Mn 0.1 O 2 pouch cell achieves a capacity retention of 86% after 200 cycles. When the cycled pouch cells undergo forced thermal runaway, the composite interphase elevates the trigger temperature from 124°C to 191°C. This interphase design provides novel insights to enhance the service lifespan and thermal safety of high energy density batteries.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"15 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2026-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149359782","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

Differentiated Interfacial Proton Delivery for Durable CO 2 ‐to‐Formate Electrosynthesis 持久co2 - to -甲酸盐电合成的差异化界面质子传递

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2026-11-07 DOI: 10.1002/aenm.71819

Jifeng Wu, Xiao Ma, Tingsong Li, Miao Hu, Xiangyun T. Xiao, Abdulrahman Allangawi, Moyu Yi, Magnus Rueping, Wan‐Lu Li, Huabin Zhang, Kuo‐Wei Huang

{"title":"Differentiated Interfacial Proton Delivery for Durable CO 2 ‐to‐Formate Electrosynthesis","authors":"Jifeng Wu, Xiao Ma, Tingsong Li, Miao Hu, Xiangyun T. Xiao, Abdulrahman Allangawi, Moyu Yi, Magnus Rueping, Wan‐Lu Li, Huabin Zhang, Kuo‐Wei Huang","doi":"10.1002/aenm.71819","DOIUrl":"https://doi.org/10.1002/aenm.71819","url":null,"abstract":"Interfacial ion and water organization critically influence proton‐coupled electrochemical reactions, yet their coupled regulation under high‐rate CO 2 electroreduction remains poorly understood. Here, we construct a mosaic‐and‐gap‐confined poly(dimethylsiloxane)‐modified Bi (Bi‐PDMS) interface that reorganizes the catalyst–electrolyte solvation environment. Atomistic simulations indicate altered near‐surface cation accessibility and a less persistent extended hydrogen‐bond environment, while slow‐growth proton‐transfer calculations show a substantially larger energetic penalty for selected extended proton‐delivery pathways than for local proton transfer to * OCHO. Operando spectroscopy and mass spectrometry measurements further reveal potential‐dependent interfacial water restructuring, suppressed hydrogen evolution, and enhanced formate‐related pathway response. Bi‐PDMS‐30 sustains ∼90% formate Faradaic efficiency (FE) at −0.2 A cm − 2 for ∼200 h with substantially reduced surface‐deposit accumulation. Together, these results support differentiated interfacial proton delivery within a reorganized ion–water environment as a useful framework for selective and durable CO 2 ‐to‐formate electrosynthesis.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"7 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2026-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149359775","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 Suppression of Triplet Exciton and Energetic Disorder via Organic Room‐Temperature Phosphorescent Additive to Reduce Energy Loss in Organic Solar Cells 室温磷光添加剂对三态激子和能量紊乱的双重抑制，以减少有机太阳能电池的能量损失

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2026-11-07 DOI: 10.1002/aenm.71739

Qingqiu Zhu, Junhong Liang, Xiaosong Qiu, Liangliang Chen, Yiyun Zeng, Mingxuan Yang, Zixun Chen, Wentao Miao, Ming Wan, Yao Wu, Renqiang Yang, Xunchang Wang

{"title":"Dual Suppression of Triplet Exciton and Energetic Disorder via Organic Room‐Temperature Phosphorescent Additive to Reduce Energy Loss in Organic Solar Cells","authors":"Qingqiu Zhu, Junhong Liang, Xiaosong Qiu, Liangliang Chen, Yiyun Zeng, Mingxuan Yang, Zixun Chen, Wentao Miao, Ming Wan, Yao Wu, Renqiang Yang, Xunchang Wang","doi":"10.1002/aenm.71739","DOIUrl":"https://doi.org/10.1002/aenm.71739","url":null,"abstract":"Non‐radiative energy loss originating from triplet exciton generation and intrinsic energetic disorder severely restricts the efficiency breakthrough of organic solar cells (OSCs). To address this dual bottleneck, herein, two benzodiimide‐based solid additives with distinct photophysical properties, namely fluorescent HPmDI and room‐temperature phosphorescent (RTP) BrPmDI, are developed to simultaneously suppress triplet exciton dissipation and mitigate energetic disorder for high‐efficiency OSCs. Both additives construct favorable intermolecular interactions with the D18 donor and L8‐BO acceptor, optimizing active layer molecular packing, enhancing film crystallinity, and reducing Urbach energy to alleviate intrinsic energetic disorder. Benefiting from the unique long‐lived triplet exciton characteristics of organic RTP BrPmDI, an efficient Dexter energy transfer (DET) pathway is additionally enabled, which effectively inhibits non‐radiative decay channels, including intersystem crossing and charge recombination‐induced triplet exciton formation. Consequently, the optimized D18:L8‐BO‐based OSCs modified with BrPmDI achieve a champion power conversion efficiency of 20.52% with a low non‐radiative energy loss of 0.217 eV, far outperforming the pristine device (19.01% and 0.226 eV) and HPmDI‐modified device (19.70% and 0.219 eV). This work reveals the dual regulatory mechanism of organic RTP additives on triplet exciton dynamics and energetic disorder, providing a facile strategy for the design of high‐efficiency additive materials toward low‐energy‐loss and high‐performance OSCs.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"11 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2026-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149359773","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 Crystallization Regulation and Defect Suppression via Dual‐Site Molecular Coordination for Efficient Inverted Perovskite Solar Cells 高效倒置钙钛矿太阳能电池的双位点分子配位协同结晶调控和缺陷抑制

IF 27.8 1区材料科学

Advanced Energy Materials Pub Date : 2026-11-07 DOI: 10.1002/aenm.71800

Xingyan Wang, Guangpeng Feng, Xiaoya Chen, Xilai He, Ranhao Yin, Hui Chen, Junkang Hou, Zihao Zhou, Chenghao Wen, Farid Ruziev, Dapeng Wang, Xiaohu Yu, Qi Cao, Xuanhua Li

{"title":"Synergistic Crystallization Regulation and Defect Suppression via Dual‐Site Molecular Coordination for Efficient Inverted Perovskite Solar Cells","authors":"Xingyan Wang, Guangpeng Feng, Xiaoya Chen, Xilai He, Ranhao Yin, Hui Chen, Junkang Hou, Zihao Zhou, Chenghao Wen, Farid Ruziev, Dapeng Wang, Xiaohu Yu, Qi Cao, Xuanhua Li","doi":"10.1002/aenm.71800","DOIUrl":"https://doi.org/10.1002/aenm.71800","url":null,"abstract":"Defects in polycrystalline perovskite films induce carrier ion migration and recombination, restricting the efficiency and durability of inverted perovskite solar cells (PSCs). Conventional additive strategies based on ammonium salts often provide insufficient defect passivation and poor long‐term stability. Herein, (1H‐benzo[d]imidazol‐2‐yl)methanamine hydrochloride (BMHCl) serves as a multifunctional molecule regulator to cooperatively regulate defect evolution and crystallization kinetics through dual‐site molecular interactions in inverted PSCs. Benefiting from the coordinated interactions of the protonated amino group (─NH 3 + ) and electron‐rich nitrogen atoms with defective [PbI 6 ] 4− octahedra, BMHCl effectively regulates crystallization kinetics, suppresses defect formation, and alleviates residual lattice strain. Consequently, the BMHCl‐modified perovskite films exhibit enhanced crystallinity, enlarged grain sizes, optimized vertical orientation, and reduced trap density. These combined microstructural improvements facilitate charge carrier transport while suppressing non‐radiative recombination. BMHCl also produces more favorable energy‐level alignment and faster interfacial charge extraction. Consequently, the champion PSC achieves the conversion efficiency of 26.50% while demonstrating excellent operational and damp‐heat stability, retaining 87.49% and 80.52% of its initial efficiency after 1000 h at 85°C and 800 h at 85°C, 85% relative humidity, respectively. This work demonstrates a practical molecular‐interaction strategy for efficient and durable inverted PSCs based on multifunctional, dual‐site passivation and crystallization regulation.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"34 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2026-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149359778","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