ACS Energy Letters 最新文献_第6页

Managing Electron–Phonon Coupling for Single-Photon Upconversion in Perovskite Quantum Dots 钙钛矿量子点中单光子上转换的电子-声子耦合管理

IF 17.5 1区材料科学

ACS Energy Letters Pub Date : 2026-10-09 Epub Date: 2026-09-26 DOI: 10.1021/acsenergylett.6c02664

Jie Gao, Hongzhe Du, Dandan Cao, Dongxu Zhao, Yi Wang, Xi-Cheng Ai, Jian-Ping Zhang

{"title":"Managing Electron–Phonon Coupling for Single-Photon Upconversion in Perovskite Quantum Dots","authors":"Jie Gao, Hongzhe Du, Dandan Cao, Dongxu Zhao, Yi Wang, Xi-Cheng Ai, Jian-Ping Zhang","doi":"10.1021/acsenergylett.6c02664","DOIUrl":"10.1021/acsenergylett.6c02664","url":null,"abstract":"Perovskite quantum dots (PQDs) feature intriguing single-photon upconversion (SPUC) behavior, whereby anti-Stokes photoluminescence (PL) can be achieved under mild continuous-wave photoexcitation, enabling applications in optical refrigeration, background-free bioimaging, and upconversion photovoltaics. While the conventional (down-conversion) PL efficiency of PQDs can be enhanced to near-unity levels, precise control of phonon-assisted upconversion, the crucial process for SPUC-PL, remains a key challenge. Herein, we demonstrate a rational strategy to improve the upconversion efficiency in organic–inorganic hybrid PQDs compared to all-inorganic counterparts. Using temperature-dependent photoluminescence spectroscopy and femtosecond absorption spectroscopy, we reveal that this cation engineering increases the electron–phonon coupling strength by nearly threefold and shortens the upconversion time constant from 445 fs to below the temporal resolution limit of 120 fs. Consequently, the SPUC efficiency under continuous-wave photoexcitation is enhanced, leading to an average upconversion energy gain above 160 meV, which surpasses those for reported surface-engineered all-inorganic PQDs and II–VI QDs.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"11 10","pages":"6998–7005"},"PeriodicalIF":17.5,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149049984","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

Regulating Interfacial Charge and Electric Double-Layer Structure by Choline Cations for Low-Polarization Aqueous Zinc–Sulfur Batteries 胆碱阳离子调节低极化锌硫水电池界面电荷和双电层结构

IF 17.5 1区材料科学

ACS Energy Letters Pub Date : 2026-10-09 Epub Date: 2026-09-02 DOI: 10.1021/acsenergylett.6c02074

Xiaolang Liu, Xiang Yu, Gaoxu Huang, Yuxi Yang, Runming Tao, Deyu Wang, Zhihong Liu, Jiyuan Liang

{"title":"Regulating Interfacial Charge and Electric Double-Layer Structure by Choline Cations for Low-Polarization Aqueous Zinc–Sulfur Batteries","authors":"Xiaolang Liu, Xiang Yu, Gaoxu Huang, Yuxi Yang, Runming Tao, Deyu Wang, Zhihong Liu, Jiyuan Liang","doi":"10.1021/acsenergylett.6c02074","DOIUrl":"10.1021/acsenergylett.6c02074","url":null,"abstract":"Aqueous zinc–sulfur batteries (ZSBs) offer inherent safety, low cost, and impressive theoretical energy density, but their performance is limited by a low discharge plateau. Here, choline cations (Ch+) are introduced to regulate the charge distribution and electric double-layer (EDL) thickness at the S cathode interface, constructing a Zn2+-enriched thin EDL that effectively suppresses voltage polarization. Ch+ not only accelerates Zn2+ transport across the EDL but also enhances Zn2+ enrichment within the EDL region, synchronously optimizing ion transport and interfacial kinetics to promote efficient S to ZnS conversion. Under this condition, the ZSB delivers a specific capacity of 1684 mAh g–1, a low polarization of 0.31 V and an energy density of 1108 Wh kg–1 at 0.1 A g–1, while retaining 601 mAh g–1 over 1000 cycles at 10 A g–1. This work provides a guideline for achieving low polarization and overcoming the energy density bottleneck in ZSBs.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"11 10","pages":"6783–6792"},"PeriodicalIF":17.5,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148885314","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

Powering Hyperscale AI Data Centers with Off-Grid Solar, Battery, and Hydrogen 用离网太阳能、电池和氢气为超大规模人工智能数据中心供电

IF 17.5 1区材料科学

ACS Energy Letters Pub Date : 2026-10-09 Epub Date: 2026-09-16 DOI: 10.1021/acsenergylett.6c02598

Anil S. Bika, Brian P. Setzler, Paul F. Browning, Vrishank Mechineni, Rebekah J. Marks, Karen Y. Meidlinger, Ajay K. Prasad, Yushan Yan

{"title":"Powering Hyperscale AI Data Centers with Off-Grid Solar, Battery, and Hydrogen","authors":"Anil S. Bika, Brian P. Setzler, Paul F. Browning, Vrishank Mechineni, Rebekah J. Marks, Karen Y. Meidlinger, Ajay K. Prasad, Yushan Yan","doi":"10.1021/acsenergylett.6c02598","DOIUrl":"10.1021/acsenergylett.6c02598","url":null,"abstract":"Artificial intelligence (AI) data centers are emerging as a major source of electricity demand, driving interest in renewable-powered and off-grid energy systems as grid interconnection delays, generator shortages, and infrastructure constraints complicate high load factor operation. In this Perspective, we model a 1-GW off-grid solar-powered AI data center and show that battery-only systems exhibit rapid cost escalation at high load factor because of solar and battery overbuild, curtailment, and underutilized storage capacity. In contrast, battery + hydrogen systems suppress this behavior by allowing batteries to manage daily fluctuations, while hydrogen provides long-duration and seasonal energy storage through underground hydrogen storage. Sensitivity analysis further shows that the economic advantage of battery + hydrogen architectures persists across a wide range of hydrogen subsystem costs. More broadly, this Perspective suggests that high-load-factor AI data centers may represent an early commercialization pathway for hydrogen-based seasonal energy infrastructure.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"11 10","pages":"6439–6445"},"PeriodicalIF":17.5,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148973831","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

Triplet or Charge-Separated State? Distinguishing Long-Lived, Photogenerated Electronic States in SWCNT/MoS2 Heterojunctions 三重态还是电荷分离态？在swcnts /MoS2异质结中区分长寿命、光生电子态

IF 17.5 1区材料科学

ACS Energy Letters Pub Date : 2026-10-09 Epub Date: 2026-09-02 DOI: 10.1021/acsenergylett.6c01923

Leo Romanetz, M. Alejandra Hermosilla-Palacios, Debjit Ghoshal, Obadiah G. Reid, Jeffrey L. Blackburn

{"title":"Triplet or Charge-Separated State? Distinguishing Long-Lived, Photogenerated Electronic States in SWCNT/MoS2 Heterojunctions","authors":"Leo Romanetz, M. Alejandra Hermosilla-Palacios, Debjit Ghoshal, Obadiah G. Reid, Jeffrey L. Blackburn","doi":"10.1021/acsenergylett.6c01923","DOIUrl":"10.1021/acsenergylett.6c01923","url":null,"abstract":"Single-walled carbon nanotubes (SWCNTs) and their interfaces with an array of materials are promising platforms for next-generation energy-harvesting and conversion devices. Yet the challenge of identifying the excited-state optical spectra of electronic states is a barrier to evaluating their potential for those applications. Here, we use photoinduced absorption-detected magnetic resonance (PADMR) spectroscopy to provide unambiguous assignments in the near-infrared (NIR) photoinduced absorption spectrum of (6,5) SWCNT/MoS2 heterojunctions. Driving the distinguishable magnetic resonance transitions of weakly magnetic dipole-coupled charge separated states versus SWCNT-localized triplets shows that the NIR-induced absorption peak that is bathochromically shifted from the first exciton bleach corresponds solely to separated charges. Triplet excited-state absorption is assigned at higher energy. Signatures for the interfacial charge-separated state and triplet states are stronger in the bilayer than in the neat nanotubes, revealing a charge recombination mechanism across the SWCNT/MoS2 interface that forms spin-polarized triplet states on the SWCNTs.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"11 10","pages":"6680–6689"},"PeriodicalIF":17.5,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148885312","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

Intelligent Response and Dynamic Stress Equilibrium Structure Endow Lithium-Rich Oxide Cathodes with Long Cycle Life 智能响应和动态应力平衡结构赋予富锂氧化物阴极长循环寿命

IF 17.5 1区材料科学

ACS Energy Letters Pub Date : 2026-10-09 Epub Date: 2026-09-02 DOI: 10.1021/acsenergylett.6c02095

Yufa Zhou, Shengnan He, Rui Zhang, Shaowu Lai, Yaxin Pu, Chenchen Li, Xu Xue, Chao Zheng, Zhijun Wu, Jiantuo Gan, Wubin Du, Yanxia Liu, Mingchang Zhang, Yaxiong Yang, Hongge Pan

{"title":"Intelligent Response and Dynamic Stress Equilibrium Structure Endow Lithium-Rich Oxide Cathodes with Long Cycle Life","authors":"Yufa Zhou, Shengnan He, Rui Zhang, Shaowu Lai, Yaxin Pu, Chenchen Li, Xu Xue, Chao Zheng, Zhijun Wu, Jiantuo Gan, Wubin Du, Yanxia Liu, Mingchang Zhang, Yaxiong Yang, Hongge Pan","doi":"10.1021/acsenergylett.6c02095","DOIUrl":"10.1021/acsenergylett.6c02095","url":null,"abstract":"Lithium-rich oxides (LROs) deliver an energy density of over 1000 Wh kg−1 for lithium-ion battery cathode applications, yet cycling-induced stress accumulation triggers structural degradation and poor cyclic stability. Herein, hierarchical twin structures are prefabricated in LROs. Prestress at twin boundaries forms interlaced stress networks to adaptively accommodate tensile/compressive strains upon cycling and dissipate localized stress concentration. The self-adaptive twin structure tolerates cyclic volume fluctuation, preserving the layered framework against irreversible spinel/rock-salt phase transition during long-term structural relaxation. The twin-modified LRO retains 94.98% capacity after 500 cycles (1 C) and 80.79% after 800 cycles, with 155.31 mAh g−1 at 5 C. The pouch cell delivers 12.59 Ah discharge capacity and maintains 84.83% capacity after 49 cycles. This work offers a strategy to tune electrochemo-mechanical properties for designing cathode materials.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"11 10","pages":"6764–6775"},"PeriodicalIF":17.5,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148885313","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

Unraveling Thermal Accumulation in Perovskite/Silicon Tandems: Structure- and Material-Driven Heating in SHJ, TOPCon, and TBC Bottom Cells 解开钙钛矿/硅串联中的热积累：SHJ， TOPCon和TBC底部电池中结构和材料驱动的加热

IF 17.5 1区材料科学

ACS Energy Letters Pub Date : 2026-10-09 Epub Date: 2026-09-07 DOI: 10.1021/acsenergylett.6c01614

Kaiyue Li, Xuan Chang, Xueliang Yang, Yanfeng Li, Jinchao Shi, Mengmeng Wu, Bo Yu, Huan Yang, Haishun Gao, Yuke Ren, Guoang Li, Shuaihang Hou, Hang Weng, Bingbing Chen, Dehua Yang, Shufang Wang, Jianhui Chen

{"title":"Unraveling Thermal Accumulation in Perovskite/Silicon Tandems: Structure- and Material-Driven Heating in SHJ, TOPCon, and TBC Bottom Cells","authors":"Kaiyue Li, Xuan Chang, Xueliang Yang, Yanfeng Li, Jinchao Shi, Mengmeng Wu, Bo Yu, Huan Yang, Haishun Gao, Yuke Ren, Guoang Li, Shuaihang Hou, Hang Weng, Bingbing Chen, Dehua Yang, Shufang Wang, Jianhui Chen","doi":"10.1021/acsenergylett.6c01614","DOIUrl":"10.1021/acsenergylett.6c01614","url":null,"abstract":"Perovskite/silicon (PVK/Si) tandem solar cells approach 35% efficiency, while near-infrared (NIR)-induced thermal accumulation severely restricts their operational stability. This work reveals structural and material heating origins of three mainstream silicon bottom sub-cells: SHJ, TOPCon, and TBC. Under NIR irradiation, the SHJ bottom cell shows the highest steady-state temperature (65.2 °C) and maximum efficiency loss (7.91% at 150 °C) due to its rear texture extending the NIR optical path and low-thermal-conductivity ITO/a-Si:H layers. In contrast, the TBC bottom sub-cell with a planar rear surface and high-thermal-conductivity SixNy/poly-Si stack presents the weakest heat buildup and best stability with only 5.86% PCE decay. IEC-standard long-term thermal aging tests confirm the serious performance degradation of SHJ bottom sub-cell. COMSOL simulations validate our findings in both 2T and 4T tandem configurations. This work offers useful references for thermally driven bottom-cell selection among the studied architectures, toward efficient, stable, and industrially viable PVK/Si tandem solar cells.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"11 10","pages":"6525–6536"},"PeriodicalIF":17.5,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148973159","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

Correction to “Solvent-Induced Polymorphism Influences Efficiency in Organic Solar Cells” 修正“溶剂诱导多态性影响有机太阳能电池效率”

IF 17.5 1区材料科学

ACS Energy Letters Pub Date : 2026-10-09 Epub Date: 2026-09-16 DOI: 10.1021/acsenergylett.6c02600

Braulio Reyes-Suárez, Zhifang Du, Neethu Thomas, Zhong-Ze Qu, Tomasz Pawlak, Rushil Vasant, Doan Vu, Sangcheol Yoon, Sam Mugiraneza, Yunyan Lai, Jordan Fishburn, Sangmin Chae, Ahra Yi, Parth Raval, Subhrangsu Mukherjee, Yunpeng Qin, Steven Xiao, Hyo Jung Kim, Harald Ade, Thuc-Quyen Nguyen, G. N. Manjunatha Reddy

引用次数: 0

A Composition-Dependent Stress–Diffusion Framework Identifies Humidity-Tolerant Processing Windows in Hybrid Perovskite Solar Cells 成分依赖的应力扩散框架确定混合钙钛矿太阳能电池的耐湿加工窗口

IF 17.5 1区材料科学

ACS Energy Letters Pub Date : 2026-10-09 Epub Date: 2026-09-16 DOI: 10.1021/acsenergylett.6c02445

Boyu Guo, Gabriel R. McAndrews, Samantha C. Kaczaral, Matteo R. S. Poma, Ryan A. DeCrescent, Jiazhen Li, Qing Gu, Michael D. McGehee, Aram Amassian

{"title":"A Composition-Dependent Stress–Diffusion Framework Identifies Humidity-Tolerant Processing Windows in Hybrid Perovskite Solar Cells","authors":"Boyu Guo, Gabriel R. McAndrews, Samantha C. Kaczaral, Matteo R. S. Poma, Ryan A. DeCrescent, Jiazhen Li, Qing Gu, Michael D. McGehee, Aram Amassian","doi":"10.1021/acsenergylett.6c02445","DOIUrl":"10.1021/acsenergylett.6c02445","url":null,"abstract":"Hybrid perovskite composition controls ion transport and environmental tolerance, but its role in residual-stress relaxation and implications for ambient fabrication remain unclear. We establish a composition-dependent stress–diffusion framework linking cation/halide chemistry, grain-boundary halide transport, and moisture uptake. In situ curvature and grazing-incidence X-ray diffraction measurements show that tensile stress relaxes by diffusion-mediated inelastic deformation across single- and mixed-composition perovskites. Temperature-dependent relaxation yields activation energies consistent with vacancy-mediated grain-boundary diffusion in methylammonium-based films and lower-barrier grain-boundary and triple-junction transport in formamidinium-based films. Humidity accelerates relaxation through mobile moisture adsorbed near grain boundaries and trapped moisture incorporated into the lattice. Stress pre-relaxation reduces moisture uptake by up to an order of magnitude, extending ambient storage stability within a universal processing window. In devices, moderate humidity up to 50% relative humidity passivates shallow traps and improves average performance without compromising 300-h operational stability, establishing a stress–diffusion framework for ambient perovskite device manufacturing.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"11 10","pages":"6959–6971"},"PeriodicalIF":17.5,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148973962","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

Passivation-Induced Interfacial Fields Reshape Carrier-Extraction Landscapes in Perovskite Solar Cells 钝化诱导的界面场重塑钙钛矿太阳能电池中的载流子提取景观

IF 17.5 1区材料科学

ACS Energy Letters Pub Date : 2026-10-09 Epub Date: 2026-09-25 DOI: 10.1021/acsenergylett.6c02149

Peng Xu, Jing Leng, Linghui Zhang, Qingshun Dong, Tianle Fan, Shengye Jin, Wenming Tian

{"title":"Passivation-Induced Interfacial Fields Reshape Carrier-Extraction Landscapes in Perovskite Solar Cells","authors":"Peng Xu, Jing Leng, Linghui Zhang, Qingshun Dong, Tianle Fan, Shengye Jin, Wenming Tian","doi":"10.1021/acsenergylett.6c02149","DOIUrl":"10.1021/acsenergylett.6c02149","url":null,"abstract":"Organic ammonium passivation is known to improve perovskite solar cells (PSCs) by modifying interfacial defects, energetics, and electrostatics, yet how these local interfacial changes manifest as spatial carrier-extraction pathways inside operating devices remains unclear. Here, we combine back-excitation transient reflection spectroscopy, cross-sectional photocurrent imaging, and drift–diffusion modeling to directly correlate interfacial modification with longitudinal carrier transport and spatial carrier extraction. Although phenethylammonium iodide (PEAI) and octylammonium iodide (OAI) are introduced at the hole-transport interface, both produce direction-dependent carrier transport across the absorber and enhance photocurrent generation near the remote electron-transport-layer interface. Drift–diffusion analysis shows that passivation shifts the intersection point of the electron and hole collection-probability curves toward the electron-transport layer (ETL), with OAI producing a more spatially extended interfacial field than PEAI. Our findings show that molecular passivation redistributes carrier-collection probabilities across the absorber, thereby enhancing extraction near the remote interface.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"11 10","pages":"6841–6848"},"PeriodicalIF":17.5,"publicationDate":"2026-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149049810","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

A Decade in the Evolving Landscape of Energy Research (Part II): Storage Batteries 能源研究发展的十年（第二部分）：蓄电池

IF 17.5 1区材料科学

ACS Energy Letters Pub Date : 2026-10-09 Epub Date: 2026-09-28 DOI: 10.1021/acsenergylett.6c02326

Yang-Kook Sun, Greco González Miera

引用次数: 0