ACS Energy Letters 最新文献_第2页

Localized Eutectic Electrolytes for Stable Aqueous Zinc-Ion Batteries 稳定锌离子水电池的局部共晶电解质

IF 22 1区材料科学

ACS Energy Letters Pub Date : 2025-05-22 DOI: 10.1021/acsenergylett.5c00491

Huida Lyu, Jung Tae Kim, Dongfang Cheng, Xintong Yuan, Mackenzie Anderson, Keyue Liang, Jiayi Yu, Philippe Sautet, Richard Kaner, Yuzhang Li

{"title":"Localized Eutectic Electrolytes for Stable Aqueous Zinc-Ion Batteries","authors":"Huida Lyu, Jung Tae Kim, Dongfang Cheng, Xintong Yuan, Mackenzie Anderson, Keyue Liang, Jiayi Yu, Philippe Sautet, Richard Kaner, Yuzhang Li","doi":"10.1021/acsenergylett.5c00491","DOIUrl":"https://doi.org/10.1021/acsenergylett.5c00491","url":null,"abstract":"Aqueous zinc-ion batteries (AZIBs) have been regarded as promising candidates for large-scale energy storage. However, the poor reversibility of Zn electrodeposition at low current densities still remains a great challenge in developing practical AZIBs. In this work, a localized eutectic electrolyte (LEE) is proposed by introducing trioxane to a baseline eutectic electrolyte, 2.0 M Zn(OTf)2 in water/sulfolane (50:50 vol %), for reversible Zn anodes under challenging conditions (low N/P ratios and low current densities). Trioxane serves to disperse the aqueous eutectic domain and construct a solvation-sheath-repelled inner Helmholtz plane, thus regulating charge transfer kinetics to enable further suppression of electrolyte corrosion and improved Zn morphology. Zn||Zn0.25V2O5·nH2O full cells with a low N/P ratio (≤4) and a low current density of 100 mA cathode–1 (corresponding to a 0.33 C rate) exhibit enhanced cycling stability and a prolonged lifespan (nearly 3 months) in the LEE.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"18 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2025-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144122762","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

Fabrication of Conductive Perovskite-Additive Networks Via Sequential Vacuum Deposition for Perovskite Light-Emitting Diodes 连续真空沉积制备钙钛矿发光二极管导电钙钛矿-添加剂网络

IF 22 1区材料科学

ACS Energy Letters Pub Date : 2025-05-21 DOI: 10.1021/acsenergylett.5c01014

Min Hyeong Lee, Jongbeom Kim, Jongmin Han, Ye In Kim, Dong Han Kim, Yong-Jun Choi, Myoung Hoon Song

{"title":"Fabrication of Conductive Perovskite-Additive Networks Via Sequential Vacuum Deposition for Perovskite Light-Emitting Diodes","authors":"Min Hyeong Lee, Jongbeom Kim, Jongmin Han, Ye In Kim, Dong Han Kim, Yong-Jun Choi, Myoung Hoon Song","doi":"10.1021/acsenergylett.5c01014","DOIUrl":"https://doi.org/10.1021/acsenergylett.5c01014","url":null,"abstract":"Thermally evaporated perovskite light-emitting diodes (PeLEDs) have emerged as promising candidates for next-generation displays owing to the high reproducibility and scalability of thermal evaporation. However, the performance of thermally evaporated PeLEDs remains inferior to that of solution-processed PeLEDs. In this study, conductive perovskite-additive networks are fabricated through multisource sequential vacuum deposition using CsBr, PbBr2, and bis[2-[(oxo)diphenylphosphino] phenyl] ether (DPEPO). The phosphine oxide group in DPEPO retards crystal growth during crystallization, thereby reducing the grain size, increasing the exciton binding energy and decreasing the defect density. The enhanced electron mobility of the target perovskite device is attributable to the reduced trap density and π–π* stacking and upward shift of the Fermi level, which result in improved charge transport. The target perovskite device exhibits a remarkable external quantum efficiency of 16.91% and an operational half-lifetime of 191 h at 100 cd m–2, representing the highest reported values for thermally evaporated PeLEDs.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"154 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144113387","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

Modulation of Electron Transport Layers To Minimize Voltage Loss in CsSnI3 Perovskite Solar Cells 电子传输层的调制以减少CsSnI3钙钛矿太阳能电池的电压损失

IF 22 1区材料科学

ACS Energy Letters Pub Date : 2025-05-21 DOI: 10.1021/acsenergylett.5c01128

Haixuan Yu, Lijuan Fu, Tianyu Sun, Deyu Wang, Zhirong Liu, Junyi Huang, Zhiguo Zhang, Xiaoting Ma, Xiongjie Li, Bing Hu, Muqing Chen, Shangfeng Yang, Yan Shen, Mingkui Wang

{"title":"Modulation of Electron Transport Layers To Minimize Voltage Loss in CsSnI3 Perovskite Solar Cells","authors":"Haixuan Yu, Lijuan Fu, Tianyu Sun, Deyu Wang, Zhirong Liu, Junyi Huang, Zhiguo Zhang, Xiaoting Ma, Xiongjie Li, Bing Hu, Muqing Chen, Shangfeng Yang, Yan Shen, Mingkui Wang","doi":"10.1021/acsenergylett.5c01128","DOIUrl":"https://doi.org/10.1021/acsenergylett.5c01128","url":null,"abstract":"The efficiency of tin-based perovskite solar cells, particularly the inorganic CsSnI3, remains far below that of lead-based counterparts due to the substantial voltage loss at the charge transport layer-perovskite interface. Systematic research shows that the voltage loss in the CsSnI3 perovskite planar solar cells is mainly due to the reduction in the splitting of the quasi-Fermi energy level and the increase in the energy band bending at the electron transport layer (ETL)-perovskite interface. In this study, we propose the fullerene derivative tetramethylcyclobutadiene-C60 (TMCB), which has the high lowest unoccupied molecular orbital energy level, as an ETL for CsSnI3 perovskite planar solar cells to minimize voltage losses. The TMCB ETL has been demonstrated to facilitate CsSnI3-based perovskite solar cells to achieve a remarkable power conversion efficiency of 14.95% with a high open circuit voltage of 0.81 V measured under AM 1.5G irradiation.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"23 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144113813","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

3D Chiral Metal Halide Semiconductors 3D手性金属卤化物半导体

IF 22 1区材料科学

ACS Energy Letters Pub Date : 2025-05-21 DOI: 10.1021/acsenergylett.5c00576

Marco Moroni, Luca Gregori, Clarissa Coccia, Massimo Boiocchi, Marta Morana, Doretta Capsoni, Andrea Olivati, Antonella Treglia, Giulia Folpini, Maddalena Patrini, Isabel Goncalves, Heyong Wang, Chiara Milanese, Annamaria Petrozza, Edoardo Mosconi, Filippo De Angelis, Lorenzo Malavasi

{"title":"3D Chiral Metal Halide Semiconductors","authors":"Marco Moroni, Luca Gregori, Clarissa Coccia, Massimo Boiocchi, Marta Morana, Doretta Capsoni, Andrea Olivati, Antonella Treglia, Giulia Folpini, Maddalena Patrini, Isabel Goncalves, Heyong Wang, Chiara Milanese, Annamaria Petrozza, Edoardo Mosconi, Filippo De Angelis, Lorenzo Malavasi","doi":"10.1021/acsenergylett.5c00576","DOIUrl":"https://doi.org/10.1021/acsenergylett.5c00576","url":null,"abstract":"Chiral metal halides are promising materials for nonlinear optics and spin-selective devices. Typically, chirality is introduced via large chiral organic cations, leading to low-dimensional structures and limitations in charge transport. Here, we design a family of chiral metal halides based on the relatively small ditopic R/S-3-aminoquinuclidine (3-AQ) cation, forming an (R/S-3AQ)Pb2Br6 structure closely related to the 3D corner-sharing octahedral network of perovskites. The resulting material exhibits a direct bandgap, isotropic band structure, and fully 3D photoexcitation. Circular dichroism confirms a chiral anisotropy factor consistent with theoretical predictions. Moreover, the material displays a Rashba effect in the conduction band, which is attributed to spin–orbit coupling and the lack of inversion symmetry. Offering rich chemical tunability and efficient 3D charge transport, this new class of chiral semiconductors provides a promising platform for advancing nonlinear optoelectronic and spintronic devices.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"31 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2025-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144113386","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

Carbonate/Hydroxide Separation Boosts CO2 Absorption Rate and Electrochemical Release Efficiency 碳酸盐/氢氧化物分离提高了CO2吸收率和电化学释放效率

IF 22 1区材料科学

ACS Energy Letters Pub Date : 2025-05-20 DOI: 10.1021/acsenergylett.5c00893

Simon Rufer, Tal Joseph, Zara Aamer, Kripa K. Varanasi

{"title":"Carbonate/Hydroxide Separation Boosts CO2 Absorption Rate and Electrochemical Release Efficiency","authors":"Simon Rufer, Tal Joseph, Zara Aamer, Kripa K. Varanasi","doi":"10.1021/acsenergylett.5c00893","DOIUrl":"https://doi.org/10.1021/acsenergylett.5c00893","url":null,"abstract":"Electrochemical CO2 capture systems using hydroxide solutions face stiff performance trade-offs, as the hydroxide ions necessary for rapid CO2 absorption reduce the current efficiency of subsequent electrochemical CO2 release. In this work, we propose a carbonate/hydroxide separation step between CO2 absorption and release to provide a concentrated carbonate stream for efficient electrochemical release and a separate hydroxide stream for rapid absorption. We combine experiments on CO2 absorption, nanofiltration separation, and electrochemical release to build a comprehensive model that illustrates system performance trade-offs. We find that employing commercial nanofiltration membranes for separation increases the electrochemical current efficiency by as much as six-fold without sacrificing absorption rate. In the case of Direct Air Capture, the nanofiltration approach reduces costs by 20-30% and significantly increases the operational flexibility of the system. Such carbonate/hydroxide separations may also find use in other systems such as point source capture and integrated CO2 capture and conversion to valuable products.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"131 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144097062","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

Electrocatalytic Reactive Capture of NO from O2-Containing Simulated Flue Gas Using Highly O2-Resistant Fe2+-(salen-SO3) for NH3 Synthesis 高抗氧化性Fe2+-(salen-SO3)电催化捕获含o2模拟烟气中NO合成NH3

IF 22 1区材料科学

ACS Energy Letters Pub Date : 2025-05-20 DOI: 10.1021/acsenergylett.5c01278

Heesung Eum, Seok-Hyeon Cheong, Jiyun Kim, Seo-Jung Han, Minji Kang, Sungho Yoon, Hae-Seok Lee, Minserk Cheong, Hyunjoo Lee, Dong Ki Lee

{"title":"Electrocatalytic Reactive Capture of NO from O2-Containing Simulated Flue Gas Using Highly O2-Resistant Fe2+-(salen-SO3) for NH3 Synthesis","authors":"Heesung Eum, Seok-Hyeon Cheong, Jiyun Kim, Seo-Jung Han, Minji Kang, Sungho Yoon, Hae-Seok Lee, Minserk Cheong, Hyunjoo Lee, Dong Ki Lee","doi":"10.1021/acsenergylett.5c01278","DOIUrl":"https://doi.org/10.1021/acsenergylett.5c01278","url":null,"abstract":"Efficient removal of nitric oxide (NO) from flue gases remains a significant environmental challenge due to its low concentration, poor water solubility, and the presence of oxygen, which deactivates traditional NO absorbents such as Fe2+-EDTA. Herein, we present an electrochemistry-based reactive NO capture system using SO3-functionalized Fe2+-salen as an NO absorbent with outstanding oxygen resistance. The unique tetracoordinate structure of the salen-SO3 ligand reduces the electron density at the Fe2+ center, preventing its oxidation to Fe3+ under air exposure. Coupled with highly porous NiMo electrocatalysts, the system achieves an NH3 production rate of 2.0 mmol h–1 cm–2geo with 97% Faraday efficiency under 100% NO. This continuous NO capture and conversion into NH3 was maintained under air-exposed conditions at 60% of the performance level under 100% NO, with stability over 160 h. Mechanistic studies reveal that Fe2+ is the critical active site for NO reduction and elucidate complete reaction pathways for NH3 synthesis.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"55 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2025-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144097064","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

Polar-Polymer-Enabled Solvent Anchoring Effect Retunes Anion-Dominated Solvation Sheath in Gel Electrolyte 极性聚合物使溶剂锚定效应回归阴离子主导的凝胶电解质溶剂鞘

IF 22 1区材料科学

ACS Energy Letters Pub Date : 2025-05-19 DOI: 10.1021/acsenergylett.5c01061

Qiqi Sun, Chengyun Ma, Jiafeng Li, Leyuan Ma, Xuehui Li, Tao Zhang, Zhiwei Zhang, Rutao Wang, Zhao Qian, Guilong Wang, Longwei Yin, Chengxiang Wang

{"title":"Polar-Polymer-Enabled Solvent Anchoring Effect Retunes Anion-Dominated Solvation Sheath in Gel Electrolyte","authors":"Qiqi Sun, Chengyun Ma, Jiafeng Li, Leyuan Ma, Xuehui Li, Tao Zhang, Zhiwei Zhang, Rutao Wang, Zhao Qian, Guilong Wang, Longwei Yin, Chengxiang Wang","doi":"10.1021/acsenergylett.5c01061","DOIUrl":"https://doi.org/10.1021/acsenergylett.5c01061","url":null,"abstract":"The application of nonflammable gel polymer electrolytes (GPEs) with triethyl phosphate (TEP) solvents is severely impeded by the incompatibility of free TEP molecules on electrode–electrolyte interfaces. Here, to overcome this obstacle, we synthesize an in situ designed GPE (FGPE) by incorporating fluorinated polar−polymer poly-2,2,2-trifluoroethyl methacrylate (PTFMA) into a lithium difluoro(oxalato)borate (LiDFOB)–TEP-based liquid electrolyte. An innovative TEP solvent anchoring effect via dipole–dipole intermolecular chemistry of PTFMA polymer skeleton to TEP solvents is proposed, which breaks the solvation dominance of TEP solvents and facilitates reconstruction of a DFOB–-dominated Li+ solvation sheath, thereby fostering anion-derived interfacial protective layers. Detailed interfacial resistance evolution revealed accelerated interfacial Li+ transport kinetics. Therefore, the Li|FGPE|Li cell achieves a remarkably prolonged cycle life of over 5000 h at 0.1 mA cm–2 and the Li|FGPE|LCO cell demonstrates 90.4% capacity retention after 600 cycles. This work of manipulating the solvent anchoring effect presents different insights into enhancing the interfacial compatibility of GPEs.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"134 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144088238","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

The Importance of Fabricating Hard Carbon-Based Full Cells to Overcome Sodium Metal Anode Limitations in Evaluating High-Mass-Loading Cathodes 在评估高质量负载阴极时，制造硬质碳基全电池克服金属钠阳极限制的重要性

IF 22 1区材料科学

ACS Energy Letters Pub Date : 2025-05-19 DOI: 10.1021/acsenergylett.5c00479

Huiya Yang, Yuejing Zeng, Wei Li, Yang Yang, Jinbao Zhao

{"title":"The Importance of Fabricating Hard Carbon-Based Full Cells to Overcome Sodium Metal Anode Limitations in Evaluating High-Mass-Loading Cathodes","authors":"Huiya Yang, Yuejing Zeng, Wei Li, Yang Yang, Jinbao Zhao","doi":"10.1021/acsenergylett.5c00479","DOIUrl":"https://doi.org/10.1021/acsenergylett.5c00479","url":null,"abstract":"Developing advanced cathode materials is pivotal for successful commercialization of sodium-ion batteries (SIBs), but it requires reliable evaluation of electrochemical performance. However, the widely used sodium metal anode in academic research is not a “qualified counter electrode”, particularly under high-mass-loading and limited-Na conditions. Herein, the limitations of Na metal anode are discussed, and reliable high-mass-loading hard carbon (HC)-based full cells are proposed with a detailed guideline provided for qualified slurry preparation, electrode fabrication, and cell design. Three-electrode tests reveal Na metal’s severe potential fluctuations, which influences the evaluation of electrochemical performance for high-mass-loading NaNi1/3Fe1/3Mn1/3O2 cathodes. Encouragingly, HC-based pouch cells demonstrate good electrochemical performance, including lower polarization (∼0.07 Ω ohmic resistance), enhanced cycling stability (85% retention after 250 cycles), and rate performance (80% capacity maintained at 4 C), highlighting the exceptional reliability and suitability. This study offers a robust methodology for evaluating lab-developed cathode materials, bridging the gap between academia and industrial applications.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"31 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144088236","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

Multifunctional Tunnel Structural Interfacial Modulation Promises Fast-Charge and Long-Life Na-Layered Oxides 多功能隧道结构界面调制有望实现快速充电和长寿命的钠层氧化物

IF 22 1区材料科学

ACS Energy Letters Pub Date : 2025-05-19 DOI: 10.1021/acsenergylett.5c01161

Xin-Yu Zhang, Ling-Yi Kong, Junjie Ding, Yan-Fang Zhu, Jia-Yang Li, Zhuang-Chun Jian, Hanshen Xin, Meng-Ying Li, Peng Tan, Wei Kong Pang, Shi-Xue Dou, Yao Xiao

{"title":"Multifunctional Tunnel Structural Interfacial Modulation Promises Fast-Charge and Long-Life Na-Layered Oxides","authors":"Xin-Yu Zhang, Ling-Yi Kong, Junjie Ding, Yan-Fang Zhu, Jia-Yang Li, Zhuang-Chun Jian, Hanshen Xin, Meng-Ying Li, Peng Tan, Wei Kong Pang, Shi-Xue Dou, Yao Xiao","doi":"10.1021/acsenergylett.5c01161","DOIUrl":"https://doi.org/10.1021/acsenergylett.5c01161","url":null,"abstract":"Na-layered oxides are famous for their environmental friendliness and facile synthesis, however, developing cathodes with fast Na+ transport kinetics, robust structure, and air/water stability to realize fast-charge and long-life layered oxide cathodes for sodium-ion batteries (SIBs) remains a great challenge. Herein, we propose the concept of multifunctional tunnel interfacial modulation to stabilize the phase structure of P2-Na2/3Ni1/3Mn1/3Ti1/3O2. Relying on the unique structure of the Na0.44MnO2 with S-channel, the modified electrode prepared with an aqueous binder achieves capacity retention of 80.87% after 4000 cycles at 2C. The calculation results of stress simulation reveal that the tunnel structure could dissipate the mechanical stress of the P2 phase upon cycling. Overall, such multifunctional tunnel interfacial modulation provides a new research direction for the development of fast-charge and long-life SIBs.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"55 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2025-05-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144088241","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

Diketopyrrolopyrroles Act as Redox Mediators in Lithium–Sulfur Batteries 二酮吡咯在锂硫电池中的氧化还原介质作用

IF 22 1区材料科学

ACS Energy Letters Pub Date : 2025-05-17 DOI: 10.1021/acsenergylett.5c01262

Joanne S. Searle, Ferdinando Malagreca, Benjamin M. G. Denison, Alexander J. Kibler, Darren A. Walsh, Lee R. Johnson, David B. Amabilino, Graham N. Newton

{"title":"Diketopyrrolopyrroles Act as Redox Mediators in Lithium–Sulfur Batteries","authors":"Joanne S. Searle, Ferdinando Malagreca, Benjamin M. G. Denison, Alexander J. Kibler, Darren A. Walsh, Lee R. Johnson, David B. Amabilino, Graham N. Newton","doi":"10.1021/acsenergylett.5c01262","DOIUrl":"https://doi.org/10.1021/acsenergylett.5c01262","url":null,"abstract":"Lithium–sulfur (Li–S) batteries are among the most promising next-generation energy storage technologies, offering gravimetric energy densities greater than those of state-of-the-art lithium-ion batteries. However, widespread commercialization of the technology is hindered by challenges related to the multistep redox chemistry of sulfur. The addition of diketopyrollopyrroles (DPPs) to Li–S battery electrolytes can improve cell performance; however, their mechanism of action remains unclear. Here, we use a range of electrochemical methods to elucidate the mechanism through which DPPs affect the performance of the Li–S batteries. Electrochemical analysis demonstrates the importance of DPP redox potentials in enhancing the redox kinetics of polysulfide reduction, with analytical measurements confirming this is via a redox mediation process in which electrons are shuttled between polysulfide intermediates and the underlying current collector via the DPP molecule. We show that DPP derivatives that are not redox active at the potentials associated with the multi-step interconversion of sulfur and lithium sulfide in Li–S batteries do not show the same effect. Galvanostatic analysis confirms that the enhancement of the kinetics of polysulfide conversion translates to the operation of Li–S batteries, which show an improvement in the discharge capacity after the addition of the additives.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"64 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2025-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144066968","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