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Reconfiguring solvent–lead coordination enables green-solvent air-processing of high-efficiency and scalable perovskite photovoltaics 重新配置溶剂-铅配合使高效和可扩展的钙钛矿光伏的绿色溶剂空气处理成为可能
IF 32.5 1区 材料科学
Energy & Environmental Science Pub Date : 2026-09-16 DOI: 10.1039/d6ee04136a
Chunlei Zhang,Liangchen Qian,Qi Liu,Xintong Li,Ning Wang,Francesco Vanin,Zexin Yu,Yan Wang,Dong Zhang,Shuai Li,Jianqiu Gong,Danpeng Gao,Zhe Wang,Bo Li,Yen-Hung Lin,Chunyi Zhi,Martin Stolterfoht,Nan Li,Xiao Cheng Zeng,Zonglong Zhu
{"title":"Reconfiguring solvent–lead coordination enables green-solvent air-processing of high-efficiency and scalable perovskite photovoltaics","authors":"Chunlei Zhang,Liangchen Qian,Qi Liu,Xintong Li,Ning Wang,Francesco Vanin,Zexin Yu,Yan Wang,Dong Zhang,Shuai Li,Jianqiu Gong,Danpeng Gao,Zhe Wang,Bo Li,Yen-Hung Lin,Chunyi Zhi,Martin Stolterfoht,Nan Li,Xiao Cheng Zeng,Zonglong Zhu","doi":"10.1039/d6ee04136a","DOIUrl":"https://doi.org/10.1039/d6ee04136a","url":null,"abstract":"Perovskite solar cells (PSCs) have reached power conversion efficiencies (PCEs) of 28%, but their scalable manufacturing remains hindered by the use of hazardous solvents and inert-atmosphere processing. Green-solvent air-processing is a promising route towards sustainable perovskite photovoltaics, yet its efficiency remains limited by an unresolved chemical bottleneck. Here we report that air-processing disrupts solvent–lead coordination in the precursor state, leading to intermediate-phase heterogeneity, defect formation, and non-uniform crystallization in dimethyl sulfoxide (DMSO)-based systems. We resolve this challenge by introducing a coordination-reconfiguration strategy in a green DMSO/isopropanol (IPA) solvent system using iodo-binaphthyl-sulfonimide (IBS) as a coordination-reconfiguring agent. Ab initio calculations and experimental results indicate that IBS preferentially binds PbI2, weakens the DMSO–PbI2 interaction, and reconfigures the precursor coordination environment, thereby suppressing air-disrupted solvated intermediates and enabling homogeneous crystallization of phase-pure perovskite films. The p–i–n PSCs processed from this system achieve PCEs of 26.51% in N2 and 26.20% in air, outperforming air-processed DMF/DMSO controls, while 13.3 cm2 mini-modules deliver 23.20% PCE with strong operational and damp-heat stability.","PeriodicalId":72,"journal":{"name":"Energy & Environmental Science","volume":"17 1","pages":""},"PeriodicalIF":32.5,"publicationDate":"2026-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148973567","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
Pretrained battery transformer (PBT): A foundation model for battery life prediction 预训练电池变压器(PBT):电池寿命预测的基础模型
IF 32.5 1区 材料科学
Energy & Environmental Science Pub Date : 2026-09-15 DOI: 10.1039/d6ee03446b
Ruifeng Tan,Weixiang Hong,Jia Li,Jiaqiang Huang,Tongyi Zhang
{"title":"Pretrained battery transformer (PBT): A foundation model for battery life prediction","authors":"Ruifeng Tan,Weixiang Hong,Jia Li,Jiaqiang Huang,Tongyi Zhang","doi":"10.1039/d6ee03446b","DOIUrl":"https://doi.org/10.1039/d6ee03446b","url":null,"abstract":"Early prediction of battery cycle life is essential for improving battery design, manufacturing and deployment. However, despite encouraging progress with machine learning, battery life prediction remains constrained by scarce data and pronounced heterogeneity across battery chemistries, specifications, formation protocols and operating conditions. Although transfer learning has been widely explored to alleviate these challenges, its effectiveness is limited by the absence of a foundation model that can integrate heterogeneous battery life data and provide broadly useful knowledge for target-scenario specialization. Here we introduce the pretrained battery transformer (PBT), an integrated foundation model comprising a general PBT and specialized PBT models for individual target scenarios. At its core, battery-knowledge-encoded mixture-of-experts layers enable the general PBT to consolidate shared cycling-pattern–lifetime relationships from 13 heterogeneous lithium-ion battery datasets while preserving specialization across distinct aging regimes. The resulting general PBT provides a shared knowledge and parameter foundation from which specialized PBT models are constructed using limited labelled data to capture target-specific degradation behavior. Across 15 downstream datasets covering 977 batteries and 532 aging conditions from lithium-ion, sodium-ion and zinc-ion batteries, the specialized PBT models achieve state-of-the-art performance, outperforming the strongest comparator by 24.8% on average and by up to 73.9%. This study establishes, to our knowledge, the first foundation model for battery life prediction and points towards a shift from isolated, scenario-specific modelling to a reusable knowledge foundation for data-efficient specialization, with broader implications for sustainable-energy prediction problems constrained by scarce and heterogeneous data.","PeriodicalId":72,"journal":{"name":"Energy & Environmental Science","volume":"5 1","pages":""},"PeriodicalIF":32.5,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148964447","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
High-Power Wearable Thermoelectric Generators Enabled by Bulk-Quality (Bi,Sb) 2 Te 3 Thick Films and Heat-Flow Engineering 体积质量(Bi,Sb) 2 - Te - 3厚膜和热流工程实现大功率可穿戴热电发电机
IF 32.5 1区 材料科学
Energy & Environmental Science Pub Date : 2026-09-15 DOI: 10.1039/d6ee04772f
haowei xu,Qiang Zhang,Xinyu Wen,Haoyang Hu,Jiehua Wu,Xiaojian Tan,Yao Wang,Guoqiang Liu,Guoxiang Wang,Jun Jiang
{"title":"High-Power Wearable Thermoelectric Generators Enabled by Bulk-Quality (Bi,Sb) 2 Te 3 Thick Films and Heat-Flow Engineering","authors":"haowei xu,Qiang Zhang,Xinyu Wen,Haoyang Hu,Jiehua Wu,Xiaojian Tan,Yao Wang,Guoqiang Liu,Guoxiang Wang,Jun Jiang","doi":"10.1039/d6ee04772f","DOIUrl":"https://doi.org/10.1039/d6ee04772f","url":null,"abstract":"Wearable thermoelectric generators can continuously harvest body heat for self-powered electronics, but their practical application is hindered by insufficient power output under real wearing conditions. This limitation originates from the difficulty of simultaneously retaining bulk-level thermoelectric performance in flexible materials and establishing an effective temperature difference across skin-conformal devices. Here, we report a high-power wearable thermoelectric generator based on bulk-quality p-type (Bi,Sb)2Te3 thick films and heat-flow engineering. Excess-Te regulation optimizes the carrier concentration of slow-zone-melted crystals, enabling mechanically exfoliated thick films with a high room-temperature power factor of 55.2 μW cm-1 K-2. A Y-shaped architecture incorporating low-thermal-conductivity PDMS, protruding copper thermal columns, and copper heat-dissipation fins further directs body heat through the thermoelectric legs and suppresses parasitic heat leakage. The resulting device achieves an active-area-normalized maximum power density of 313.8 W m-2 at ΔT = 80 K and maintains good bending, thermal, and water-immersion stability. Under wrist-wearing conditions, an 80-leg device delivers 51.7 mV and 64.3 μW, sufficient to power a digital watch through a power-management circuit; this output corresponds to a footprint-normalized power density of 0.9 μW cm-2. This work establishes a material–device co-design strategy for high-power wearable thermoelectric self-powering.","PeriodicalId":72,"journal":{"name":"Energy & Environmental Science","volume":"5 1","pages":""},"PeriodicalIF":32.5,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148964404","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: Identification and understanding of activation procedures critical for nickel-based anodes in anion-exchange membrane fuel cells 更正:识别和理解阴离子交换膜燃料电池中镍基阳极的关键激活程序
IF 32.5 1区 材料科学
Energy & Environmental Science Pub Date : 2026-09-14 DOI: 10.1039/d6ee90084d
Simon Amigues,Nicolas Bibent,Eliot Petitdemange,Estelle Guyennot,Frédéric Lecoeur,Marc Dupont,Meryem Ennaji,Amir Gasmi,Raphaël Chattot,Michal Ronovsky,Laetitia Dubau,Frédéric Maillard,Jakub Drnec,Tomáš Hrbek,Patrick Elsaesser,Sima Heidari,Anna Fischer,Liela Clarke,Xinqi Chen,Ahmed A. Farghaly,Syeda Mushrifa Zahan,Alexander A. Baranov,Dario R. Dekel,Frédéric Jaouen
{"title":"Correction: Identification and understanding of activation procedures critical for nickel-based anodes in anion-exchange membrane fuel cells","authors":"Simon Amigues,Nicolas Bibent,Eliot Petitdemange,Estelle Guyennot,Frédéric Lecoeur,Marc Dupont,Meryem Ennaji,Amir Gasmi,Raphaël Chattot,Michal Ronovsky,Laetitia Dubau,Frédéric Maillard,Jakub Drnec,Tomáš Hrbek,Patrick Elsaesser,Sima Heidari,Anna Fischer,Liela Clarke,Xinqi Chen,Ahmed A. Farghaly,Syeda Mushrifa Zahan,Alexander A. Baranov,Dario R. Dekel,Frédéric Jaouen","doi":"10.1039/d6ee90084d","DOIUrl":"https://doi.org/10.1039/d6ee90084d","url":null,"abstract":"Correction for ‘Identification and understanding of activation procedures critical for nickel-based anodes in anion-exchange membrane fuel cells’ by Simon Amigues et al., Energy Environ. Sci., 2026, 19, 5488–5504, https://doi.org/10.1039/D6EE03112A.","PeriodicalId":72,"journal":{"name":"Energy & Environmental Science","volume":"76 1","pages":""},"PeriodicalIF":32.5,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148957916","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
Stacked Direct-Current Triboelectric Nanogenerators by Volume Discharge and In-situ Superposition for Enhanced Volume Power Density 基于体积放电和原位叠加的直流摩擦电纳米发电机提高体积功率密度
IF 32.5 1区 材料科学
Energy & Environmental Science Pub Date : 2026-09-14 DOI: 10.1039/d6ee04690h
Ruijie Tang,Yujie Hu,Ke Li,Xuhui Yi,Zhaoyang Yu,Renjun Xu,Bin Wu,Chenguo Hu,Wenlin Liu,Zhong Lin Wang,Zhao Wang
{"title":"Stacked Direct-Current Triboelectric Nanogenerators by Volume Discharge and In-situ Superposition for Enhanced Volume Power Density","authors":"Ruijie Tang,Yujie Hu,Ke Li,Xuhui Yi,Zhaoyang Yu,Renjun Xu,Bin Wu,Chenguo Hu,Wenlin Liu,Zhong Lin Wang,Zhao Wang","doi":"10.1039/d6ee04690h","DOIUrl":"https://doi.org/10.1039/d6ee04690h","url":null,"abstract":"Stacked integration is essential for constructing high performance triboelectric nanogenerators (TENGs) to enable large-scale energy harvesting and wide applications. However, it has been a long-standing challenge to apply this effective strategy in direct-current TENGs (DC-TENGs), owing to their intrinsic structure limitation. Here, we report an enhanced stacking DC-TENG (ESD-TENG) achieved by a synergistic approach. The insertable stator of ESD-TENG with multigap structure is constructed with radial polymer fibers as tribo-materials and metal flexible wires as electrodes, which can significantly improve the air discharge efficiency through its abundant volume discharge channels and reduce the wear through soft contact. The ultrathin rotor maximizes the three-dimensional space utilization and finally enables the successful stacking. Besides, the high output charge density is achieved through in-situ superposition of tribo-charges by introducing dual multigap structure design. As a result, the ESD-TENG achieves breakthrough in stacked ability, durability and output, reaching the highest average power density of 523.5 W·m-3·Hz-1, which is 15 times that of the previous record. Thereby, it can be applied in efficient mosquito trapping and elimination. Overall, the successful practice of this strategy marks a solid step towards the commercialization of DC-TENGs.","PeriodicalId":72,"journal":{"name":"Energy & Environmental Science","volume":"32 1","pages":""},"PeriodicalIF":32.5,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148957914","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
Pore-structural descriptors of hard carbon anodes towards tuning their interface stability for sodium storage 硬碳阳极的孔结构描述符用于调整其界面稳定性以存储钠
IF 32.5 1区 材料科学
Energy & Environmental Science Pub Date : 2026-09-14 DOI: 10.1039/d6ee04678a
Bo Sun,Jihu Liu,Jingjing Wang,Ming Li,Jianhua Zhang,Guiqiang Cao,Xuexia Song,Zheng Wang,Wei Xiao,Dongzhu Liu,Lingkun Yang,Jiaxuan Zuo,Yuhui Xu,Wenbin Li,Jiujun Zhang,Xifei Li
{"title":"Pore-structural descriptors of hard carbon anodes towards tuning their interface stability for sodium storage","authors":"Bo Sun,Jihu Liu,Jingjing Wang,Ming Li,Jianhua Zhang,Guiqiang Cao,Xuexia Song,Zheng Wang,Wei Xiao,Dongzhu Liu,Lingkun Yang,Jiaxuan Zuo,Yuhui Xu,Wenbin Li,Jiujun Zhang,Xifei Li","doi":"10.1039/d6ee04678a","DOIUrl":"https://doi.org/10.1039/d6ee04678a","url":null,"abstract":"The sodium storage behavior of hard carbon anodes depends on the thermodynamics and dynamics of electrolyte filling in nanopores, which is governed by pore throats controlling solvent sieving and pore cavities that provide storage space. These two types of structural elements are tightly coupled, and their size ratio directly determines the capillary effect during electrolyte filling. Herein, a series of hard carbon anodes with tunable pore throats and cavity sizes are prepared to study the effect of size ratio on the electrolyte filling behavior. Importantly, for the first time, λ (throat diameter/cavity diameter) is proposed as a descriptor that quantifies the constraints of pore structures on electrolyte filling and sodium storage. A low λ value means a narrow throat and a large cavity, which can effectively sieve solvent molecules, provide sufficient sodium storage space, and increase capillary resistance, thereby synergistically creating a slow and controllable ion transport environment. Guided by this descriptor, the optimized hard carbon anode achieves a high initial Coulombic efficiency of 90.4% and a reversible capacity of 397.4 mAh g−1 at 0.05 A g−1. This work further provides an understanding of the mechanism underlying the interaction between pore structural elements and battery performance by elucidating the coupling between osmotic pressure and capillary force.","PeriodicalId":72,"journal":{"name":"Energy & Environmental Science","volume":"59 1","pages":""},"PeriodicalIF":32.5,"publicationDate":"2026-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148957915","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
Asymmetric charge transfer at heterointerfaces confines lattice oxygen redox for durable ampere-level water oxidation 非对称电荷转移在异质界面限制晶格氧氧化还原持久安培水平的水氧化
IF 32.5 1区 材料科学
Energy & Environmental Science Pub Date : 2026-09-12 DOI: 10.1039/d6ee03590f
Liang An,Bao Yu Xia,Tianshou Zhao,Lin Zeng,Baoxin Wu,Zhiqing Tang,Xiaohong Zou,Yongbiao Mu,Lin Yang,Kejun Yan,Jiahui Luo
{"title":"Asymmetric charge transfer at heterointerfaces confines lattice oxygen redox for durable ampere-level water oxidation","authors":"Liang An,Bao Yu Xia,Tianshou Zhao,Lin Zeng,Baoxin Wu,Zhiqing Tang,Xiaohong Zou,Yongbiao Mu,Lin Yang,Kejun Yan,Jiahui Luo","doi":"10.1039/d6ee03590f","DOIUrl":"https://doi.org/10.1039/d6ee03590f","url":null,"abstract":"Ampere-class anion-exchange membrane water electrolysis requires anodes that can sustain high oxidative flux, rapid oxygen removal, and mechanical integrity under continuous gas-evolving operation. Here we show that spatially partitioned oxidation stabilizes lattice-oxygen-enabled oxygen evolution in an ultrathin heterostructure NiFe nanosheet anode. Operando Raman spectroscopy and depth-resolved X-ray photoelectron spectroscopy reveal oxygen-related oxidation extending deeper than metal-valence perturbation, while mixed Ni 2+ /Ni 3+ states and recoverable Fe-O coordination is retained near the surface. Nanosheet architecture also accelerates bubble release, improves mass transfer and strengthens catalyst adhesion. As a result, the catalyst delivers overpotentials of 194 mV and 282 mV at 10 and 1,000 mA cm -2 in 1.0 M KOH, respectively, and sustains 14,000 h at 1.0 A cm -2 . In an AEMWE single cell, it reaches 1.0 A cm -2 at 1.65 V and maintains stable output for more than 4,000 h at 2.0 A cm -2 . A stack-level electrolyzer incorporating this anode further sustains hundred-ampere operation for over 1,000 h under 100 A, highlighting the translation of the mechanistic design into practical device performance.","PeriodicalId":72,"journal":{"name":"Energy & Environmental Science","volume":"12 1","pages":""},"PeriodicalIF":32.5,"publicationDate":"2026-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148946648","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
Electrochemical Seawater Carbon Capture for Durable Carbon Storage: Alkalinity Modulation, Interfacial Ion Transport and Carbonate Mineralization 电化学海水碳捕获持久碳储存:碱度调制,界面离子传输和碳酸盐矿化
IF 32.5 1区 材料科学
Energy & Environmental Science Pub Date : 2026-09-12 DOI: 10.1039/d6ee03837a
Qiang Xie,Zhonglin Xia,Xiaoqi Wang,Shuaijun Fan,Jingxiang Ma,Shuangchen Ma
{"title":"Electrochemical Seawater Carbon Capture for Durable Carbon Storage: Alkalinity Modulation, Interfacial Ion Transport and Carbonate Mineralization","authors":"Qiang Xie,Zhonglin Xia,Xiaoqi Wang,Shuaijun Fan,Jingxiang Ma,Shuangchen Ma","doi":"10.1039/d6ee03837a","DOIUrl":"https://doi.org/10.1039/d6ee03837a","url":null,"abstract":"Electrochemical seawater carbon capture (ESCC) is emerging as an important research direction in carbon removal because it couples ocean-based carbon sinks with durable carbon storage and is highly compatible with electrified energy systems. This review first draws on the seawater carbonate system to elucidate the coupled relationships among total alkalinity, dissolved inorganic carbon (DIC) speciation, pCO2, interfacial ion transport, and carbonate saturation, thereby identifying three carbon-flow pathways in ESCC and their common limiting factors. Building on this framework, recent advances in direct seawater electrolysis (DSE) and bipolar membrane electrodialysis (BPMED) are examined in terms of materials design and reactor strategies for addressing these limitations. Emerging technologies, including capacitive deionization and redox-mediated pH swing, are also assessed with respect to their applicability and potential roles. A systematic comparison of DSE and BPMED is then conducted across multiple engineering dimensions, including alkalinity-retention efficiency, energy consumption, material and system complexity, technological maturity, and scalability, with these differences further linked to storage permanence and monitoring, reporting, and verification challenges associated with different carbon-flow pathways. At the broader system level, low-cost ESCC deployment strategies are also proposed. Future research should prioritize long-term stable operation in natural seawater, comprehensive carbon–energy accounting within unified system boundaries, optimization of pathways for high-permanence carbon storage and controllable mineral recovery, and deeper integration with coastal infrastructure, thereby advancing ESCC from laboratory research toward scalable and verifiable carbon-removal solutions.","PeriodicalId":72,"journal":{"name":"Energy & Environmental Science","volume":"25 1","pages":""},"PeriodicalIF":32.5,"publicationDate":"2026-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148946649","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 effect of negative electrode and cyclable lithium on the bulk redox mechanisms of lithium-and manganese-rich positive electrodes 负极和可循环锂对富锂和富锰正极本体氧化还原机制的影响
IF 32.5 1区 材料科学
Energy & Environmental Science Pub Date : 2026-09-10 DOI: 10.1039/d6ee04706h
Chun Yuen Kwok,Avi Gargye,Subhadip Mallick,Pavan Badami,Christopher J Pollock,Jason Croy,Daniel Abraham,Mahalingam Balasubramanian
{"title":"The effect of negative electrode and cyclable lithium on the bulk redox mechanisms of lithium-and manganese-rich positive electrodes","authors":"Chun Yuen Kwok,Avi Gargye,Subhadip Mallick,Pavan Badami,Christopher J Pollock,Jason Croy,Daniel Abraham,Mahalingam Balasubramanian","doi":"10.1039/d6ee04706h","DOIUrl":"https://doi.org/10.1039/d6ee04706h","url":null,"abstract":"Lithium- and manganese-rich (LMR) oxides are of commercial interest offering high energy density at a competitive cost, but their redox behavior on extended cycling remains poorly understood. Most mechanistic understanding have been derived from lithium-metal half-cell studies, which do not faithfully reflect practical full-cell electrochemistry as the cathode potential and cyclable lithium evolves dynamically. Here, we study an exemplar cobalt-free LMR (0.3Li2MnO3●0.7LiMn0.5Ni0.5O2) material using multiple full-cell architectures that span a wide range of lithium inventory retention and definitively show that, under the tested full-cell operating and electrode-harvesting conditions, LMR materials do not undergo a conversion from oxygen to manganese redox upon extended cycling. Across all full-cell configurations – including those that preserve lithium inventory most effectively and maintain access to the low-voltage lithium insertion/removal sites for hundreds of cycles – we find no evidence for the emergence of bulk high-spin trivalent manganese. Instead, manganese reduction is observed only in relithiated half-cell environments, indicating that manganese reduction originates from system level factors, and not from a genuine shift in the cathode redox mechanisms. These results demonstrate that half-cell interpretations do not automatically transfer to full-cells and refute prevailing notions that manganese reduction drives voltage fade and that oxygen redox is fundamentally irreversible.","PeriodicalId":72,"journal":{"name":"Energy & Environmental Science","volume":"485 1","pages":""},"PeriodicalIF":32.5,"publicationDate":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148915212","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
Rubidium Incorporation Stabilizing Thermal-resistant Wide Bandgap Perovskites 铷掺入稳定耐热宽禁带钙钛矿
IF 32.5 1区 材料科学
Energy & Environmental Science Pub Date : 2026-09-10 DOI: 10.1039/d6ee03943j
Ruixiong Hu,Likai Zheng,Bin Huang,Zetai Zou,Michael Grätzel,Yimin Xuan
{"title":"Rubidium Incorporation Stabilizing Thermal-resistant Wide Bandgap Perovskites","authors":"Ruixiong Hu,Likai Zheng,Bin Huang,Zetai Zou,Michael Grätzel,Yimin Xuan","doi":"10.1039/d6ee03943j","DOIUrl":"https://doi.org/10.1039/d6ee03943j","url":null,"abstract":"Wide-bandgap perovskites are indispensable for high-efficiency tandem photovoltaics, yet their practical deployment is severely hindered by thermal instability, as they can undergo degradation not only during device operation but also during the thermal processing required for tandem integration. Here we introduce rubidium tetrafluoroborate into wide-bandgap perovskites and show that effective A-site incorporation of Rb + stabilizes the perovskite lattice and markedly improves its thermal robustness. Meanwhile, BF 4 -pseudo-halide regulates crystallization and passivates iodide vacancy defects, leading to improved film quality and reduced non-radiative recombination. As a result, wide-bandgap perovskite solar cells achieve a power conversion efficiency of 21.22% and retain 80.13% of their initial efficiency after 2,500 hours of maximum power point tracking. When incorporated into MA-free allperovskite tandem solar cells, the thermally stabilized wide-bandgap absorber enables a certified efficiency of 28.39%, together with a state-of-the-art VOC ×FF product among MA-free all-perovskite tandem solar cells. These results establish Rb incorporation as an effective strategy for enabling thermally durable wide-bandgap perovskites for efficient tandem photovoltaics.","PeriodicalId":72,"journal":{"name":"Energy & Environmental Science","volume":"52 1","pages":""},"PeriodicalIF":32.5,"publicationDate":"2026-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148915204","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
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