Angewandte Chemie International Edition最新文献_第3页

Synergistic Modulation of Triplet Density and Heavy-Atom Effect Accelerates Reverse Intersystem Crossing for Narrowband Multi-Resonance TADF Emitters 三重态密度和重原子效应的协同调制加速窄带多共振TADF发射体的反向系统间交叉

IF 16.6 1区化学

Angewandte Chemie International Edition Pub Date : 2026-04-27 DOI: 10.1002/anie.4318204

Ming Yang, Jiahui Liu, Cheng Zhong, Xiaosong Cao, Zhanxiang Chen, Zhuixing Xue, Zeyuan Ye, Chuluo Yang

{"title":"Synergistic Modulation of Triplet Density and Heavy-Atom Effect Accelerates Reverse Intersystem Crossing for Narrowband Multi-Resonance TADF Emitters","authors":"Ming Yang, Jiahui Liu, Cheng Zhong, Xiaosong Cao, Zhanxiang Chen, Zhuixing Xue, Zeyuan Ye, Chuluo Yang","doi":"10.1002/anie.4318204","DOIUrl":"https://doi.org/10.1002/anie.4318204","url":null,"abstract":"Combining rapid triplet-to-singlet spin conversion with BT.2020-relevant color purity in a single purely organic emitter remains a major challenge for OLED development. Here, we report a synergistic strategy that couples increased triplet density with a modest heavy-atom effect, in which an energetically matched sulfur-containing fragment is fused into a multi-resonance thermally activated delayed fluorescence (MR-TADF) skeleton to accelerate reverse intersystem crossing (RISC) while preserving narrowband emission. The resulting emitter exhibits pure-green emission at 514 nm with a full width at half-maximum of 17 nm, together with an ultrafast RISC rate constant of 5.1 × 106 s−1. Theoretical studies and control experiments jointly reveal a dense manifold of triplet states near S1 and show that the sulfur atom enhances spin–orbit coupling between states of distinct electronic character, opening multiple efficient RISC pathways. Benefiting from these features, the corresponding non-sensitized devices deliver a maximum external quantum efficiency (EQE) of 34.6% with minimal efficiency roll-off (25.2% at 10 000 cd m−2) and Commission Internationale de l’Éclairage (CIE) coordinates of (0.20, 0.74), ranking among the best-performing green devices with a binary emitting layer. These results demonstrate a general design principle for overcoming the trade-off between ultrafast RISC and color purity in MR-TADF systems.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"33 1","pages":""},"PeriodicalIF":16.6,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147755176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Minimal ATP-Independent N2-Reducing Systems Defined by L-Cluster-Bound Nitrogenase Assembly Platforms. 由l -簇结合的氮酶组装平台定义的最小的不依赖atp的n2还原系统。

IF 16.6 1区化学

Angewandte Chemie International Edition Pub Date : 2026-04-27 DOI: 10.1002/anie.2968123

Robert Quechol,Yimo Yang,Chi Chung Lee,Markus W Ribbe,Yilin Hu

{"title":"Minimal ATP-Independent N2-Reducing Systems Defined by L-Cluster-Bound Nitrogenase Assembly Platforms.","authors":"Robert Quechol,Yimo Yang,Chi Chung Lee,Markus W Ribbe,Yilin Hu","doi":"10.1002/anie.2968123","DOIUrl":"https://doi.org/10.1002/anie.2968123","url":null,"abstract":"The Mo-nitrogenase, which consists of a reductase component (NifH) and a catalytic component (NifDK), catalyzes ATP-dependent reduction of N2 to NH3 at its active-site M-cluster ([(R-homocitrate)MoFe7S9C]). A complex metallocofactor, the M-cluster is assembled through NifB-mediated formation of the intermediate L-cluster ([Fe8S9C]), followed by L-to-M cluster maturation on NifEN. Here, we show that the L-cluster intrinsically endows the assembly proteins NifB and NifEN with N2-reducing activity. Such a function is strictly dependent on the L-cluster, as NifB acquires N2-reducing capability only after conversion of the precursor K-cluster (2x[Fe4S4]) to an L-cluster. Both L-cluster-bound NifB (NifBL) and NifEN (NifENL) catalyze ATP-independent N2 reduction in vitro when supplied with a chemical reductant or photoexcited quantum dots. Moreover, these L-cluster-containing proteins support in vivo N2-fixation in NifH-deficient E. coli strains, where the low-potential ferredoxin YfhL serves as an essential physiological electron donor. The intrinsic reactivity of the L-cluster toward N2 supports an evolutionary model in which primordial nitrogenase was a simpler, one-component, NifENL-like enzyme that preceded the modern, high-efficiency two-component system; whereas the shared L-cluster topology found in ancient nondiazotrophic enzymes like methyl-CoM reductase and methylthio-alkane reductase further implies that the L-cluster may represent an evolutionary link among nitrogen, carbon, and sulfur biogeochemical cycles.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"69 1","pages":"e2968123"},"PeriodicalIF":16.6,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147753084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual Polyamide Thin-Film Composite Membrane With Multiscale Hetero-Channels and Mosaic Charge Architecture for Boosting Ion Transport and Osmotic Energy Conversion. 具有多尺度异通道和马赛克电荷结构的双聚酰胺薄膜复合膜促进离子传递和渗透能转换。

IF 16.6 1区化学

Angewandte Chemie International Edition Pub Date : 2026-04-27 DOI: 10.1002/anie.4186742

Zifeng Cao,Baohu Wu,Haoyuan Sun,Huiqing Wu,Peiyi Wu

{"title":"Dual Polyamide Thin-Film Composite Membrane With Multiscale Hetero-Channels and Mosaic Charge Architecture for Boosting Ion Transport and Osmotic Energy Conversion.","authors":"Zifeng Cao,Baohu Wu,Haoyuan Sun,Huiqing Wu,Peiyi Wu","doi":"10.1002/anie.4186742","DOIUrl":"https://doi.org/10.1002/anie.4186742","url":null,"abstract":"Asymmetric ion-selective membranes show promise for efficient osmotic energy harvesting. Most current asymmetric membranes adopt a bipolar structure to mitigate concentration polarization. However, this approach usually increases transport resistance and compromises ion selectivity. To address these, we rationally designed a dual polyamide thin-film composite (dPA TFC) membrane via sequential interfacial polymerization (IP). The membrane is composed of two distinct polyamide (PA) layers in situ formed on a macroporous substrate. Through a surfactant-assisted IP process, an ultrathin inner PA layer with a uniform and negatively charged 3D pore structure was obtained, delivering both high ion selectivity and permeability. Subsequently, a loose outer PA layer featuring a mosaic charge architecture was constructed using protonated porphyrin as a building block. This layer promotes significant unidirectional ion transport and effectively suppresses concentration polarization, while maintaining a high cation selectivity of 0.962. Additionally, the membrane exhibits photo-responsive behavior, enabling photo-enhanced osmotic energy conversion and antibacterial activity. As a result, the dPA TFC membrane achieves a high osmotic power density of 13.2 W m-2 under light irradiation. This work provides a design paradigm that overcomes the conventional permeability-selectivity trade-off while simultaneously balancing ion concentration polarization suppression with high selectivity, thereby advancing the development of osmotic energy conversion systems.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"54 1","pages":"e4186742"},"PeriodicalIF":16.6,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147753104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-Throughput Single-Cell-Resolved Spatial Proteomics Enabled by an Ordered Colloidal Crystal Column. 由有序胶体晶体柱实现的高通量单细胞分辨率空间蛋白质组学。

IF 16.6 1区化学

Angewandte Chemie International Edition Pub Date : 2026-04-27 DOI: 10.1002/anie.8045649

Haofei Sun,Chao Wang,Kun Guo,Shan Li,Jianhong Wu,Liming Wang,Baofeng Zhao,Zhen Liang,Yu Liang,Lihua Zhang,Yukui Zhang

{"title":"High-Throughput Single-Cell-Resolved Spatial Proteomics Enabled by an Ordered Colloidal Crystal Column.","authors":"Haofei Sun,Chao Wang,Kun Guo,Shan Li,Jianhong Wu,Liming Wang,Baofeng Zhao,Zhen Liang,Yu Liang,Lihua Zhang,Yukui Zhang","doi":"10.1002/anie.8045649","DOIUrl":"https://doi.org/10.1002/anie.8045649","url":null,"abstract":"Spatial proteomics is essential to elucidate biological function and pathogenesis, for which nanoLC-MS coupled with tissue microdissection is a powerful tool. However, the throughput is limited by the time-consuming nanoLC-MS analysis of numerous microdissected slices. Herein, to boost the throughput of spatial proteomics, an ordered colloidal crystal column was developed for fast nanoLC-MS analysis of microdissected slices with low-input amounts, down to single-cell resolution. Contributed by a highly ordered arrangement of 800 nm colloidal particles, the column efficiency reached 2 560 000 plates·m-1, 10-fold higher than that of commonly used sub-2-µm particle packed columns, enabling robust and rapid peptide separation. With such a column, high-throughput nanoLC-MS analysis was achieved, as demonstrated by the identification of 5942 and 4388 proteins from 250 pg HeLa digests using 5- and 2-min gradients, respectively. More notably, the column exhibited exceptional performance in single-cell spatial proteomics, enabling the identification of up to 2304 proteins from a single hepatocyte slice within only a 5-min gradient. Even under an ultrarapid 2-min gradient, up to 1292 proteins were identified from single-cell slices, which is 16 times faster than conventional methods. All these results demonstrated great promise of the colloidal crystal column for high-throughput spatial proteomics with single-cell resolution.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"4 1","pages":"e8045649"},"PeriodicalIF":16.6,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147753086","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Green‐Emissive Ferroelectric Optical Thermometer Based on Cyclometalated Dicyanidoplatinate(II) Ions 基于环金属化双氰多铂酸盐（II）离子的绿色发射铁电光学温度计

IF 16.6 1区化学

Angewandte Chemie International Edition Pub Date : 2026-04-27 DOI: 10.1002/anie.9159585

Pawel J. Bonarek, Jan Rzepiela, Michal Liberka, Karol Wolski, Junhao Wang, Hiroko Tokoro, Shin‐ichi Ohkoshi, Fumitaka Kagawa, Jakub J. Zakrzewski, Szymon Chorazy

{"title":"Green‐Emissive Ferroelectric Optical Thermometer Based on Cyclometalated Dicyanidoplatinate(II) Ions","authors":"Pawel J. Bonarek, Jan Rzepiela, Michal Liberka, Karol Wolski, Junhao Wang, Hiroko Tokoro, Shin‐ichi Ohkoshi, Fumitaka Kagawa, Jakub J. Zakrzewski, Szymon Chorazy","doi":"10.1002/anie.9159585","DOIUrl":"https://doi.org/10.1002/anie.9159585","url":null,"abstract":"Multifunctional ferroelectrics combine switchable permanent polarization with other physical functionalities. Among them, luminescent ferroelectrics are coming into the spotlight due to their potential in sensing, data storage, and optoelectronics. This multifunctionality can be improved if their emission is sensitive to external stimuli, such as temperature ( T ), which is utilized in optical thermometry. Aiming at ferroelectric luminescent thermometers, we decided to explore photoluminescent cyanido metal complexes. We report a hybrid salt of strongly emissive dicyanido(2‐phenylpyridinato)platinate(II) complexes and N‐methyl‐quinuclidinium cations, (Meabco)[Pt II (CN) 2 (ppy)] ( 1 ). It crystallizes in a polar I ma2 space group, as confirmed by the second harmonic generation activity reaching 44% of the KDP reference. Piezoresponse force microscopy (PFM) studies indicate ferroelectricity at room temperature (RT). Due to [Pt II (CN) 2 (ppy)] – complexes, 1 shows T ‐dependent charge‐transfer photoluminescence (PL), which was applied for ratiometric optical thermometry that was proven experimentally and through TD‐DFT calculations. Its best performance is located at cryogenic temperatures, but optical thermometry is preserved in the around‐RT region with a convenient linear response of the thermometric parameter to the T variation. This electro‐optical multifunctionality was demonstrated for a crystalline sample. However, we prove the processability of 1 into a thin film of several nanometers in thickness, opening the applications‐oriented exploration of related materials.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"54 1","pages":""},"PeriodicalIF":16.6,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147751631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

BNB/NBN-Phenalenyl-2'-deoxyuridines as a Fluorophore-Quencher Pair in DNA. BNB/NBN-Phenalenyl-2'-脱氧尿嘧啶作为DNA中的荧光猝灭对。

IF 16.6 1区化学

Angewandte Chemie International Edition Pub Date : 2026-04-27 DOI: 10.1002/anie.202524671

Sarah Lutz,Hermann Neitz,Michael Müller,Johannes Chorbacher,Konstantin A Isenberg,Claudia Höbartner,Holger Helten

{"title":"BNB/NBN-Phenalenyl-2'-deoxyuridines as a Fluorophore-Quencher Pair in DNA.","authors":"Sarah Lutz,Hermann Neitz,Michael Müller,Johannes Chorbacher,Konstantin A Isenberg,Claudia Höbartner,Holger Helten","doi":"10.1002/anie.202524671","DOIUrl":"https://doi.org/10.1002/anie.202524671","url":null,"abstract":"Deoxyribonucleic acid (DNA) enables the precise arrangement and positioning of chromophores in order to study their interactions, leading, for example, to through-space energy transfer processes. BNB- and NBN-doped phenalenyls are electronically complementary fluorophores that are neutral BN/CC isosteres of the phenalenyl cation and anion, respectively. Herein, we present a pair of BNB- and NBN-doped phenalenyl-extended nucleosides, which we introduced into DNA via phosphoramidite chemistry. The two chromophores act as a donor-acceptor pair in a Förster resonance energy transfer (FRET) process, which results in the quenching of the BNB-phenalenyl fluorescence due to the nonradiative decay of the charge transfer (CT) state of the NBN-phenalenyl acceptor in an aqueous environment. The DNA duplex serves as a supramolecular scaffold to control the arrangement of the interacting BNB- and NBN-doped chromophores. The performance of the fluorophore-quencher pair was evaluated in a toehold-mediated strand displacement (TMSD) experiment, demonstrating its potential for DNA-based applications.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"16 1","pages":"e24671"},"PeriodicalIF":16.6,"publicationDate":"2026-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147751248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","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 "Toward Ultra-High-Quality-Factor Wireless Masing Magnetic Resonance Sensing". 对“迈向超高质量因子无线微波磁共振传感”的修正。

IF 16.6 1区化学

Angewandte Chemie International Edition Pub Date : 2026-04-27 DOI: 10.1002/anie.4892726

引用次数: 0

Harnessing Point-Planar Chirality Synergy: Crystallization-Enabled Resolution of Pillar[5]arene Rotaxanes With Tunable Circularly Polarized Luminescence. 利用点平面手性协同作用：柱状[5]芳烃轮烷的可调圆偏振发光结晶化分辨率。

IF 16.6 1区化学

Angewandte Chemie International Edition Pub Date : 2026-04-26 DOI: 10.1002/anie.6232425

Jie Lu,Runjia Wang,Peng Liu,Jingjun Jin,Wensheng Lu,Longyi Jin,Li Zhang,Minghua Liu

{"title":"Harnessing Point-Planar Chirality Synergy: Crystallization-Enabled Resolution of Pillar[5]arene Rotaxanes With Tunable Circularly Polarized Luminescence.","authors":"Jie Lu,Runjia Wang,Peng Liu,Jingjun Jin,Wensheng Lu,Longyi Jin,Li Zhang,Minghua Liu","doi":"10.1002/anie.6232425","DOIUrl":"https://doi.org/10.1002/anie.6232425","url":null,"abstract":"Immobilizing the planar chirality inherent to pillar[5]arene remains a challenge in supramolecular chemistry. Herein, we report a rational strategy for constructing chiral pillar[5]arene-based [2]rotaxanes and controlling their planar chirality by incorporating sterically bulky chiral stopper groups at both ends of the axle units. Using this approach, six structurally distinct [2]rotaxanes were efficiently resolved via simple recrystallization, achieving yields exceeding 90% and diastereomeric ratios (d.r.) above 99.5:0.5. These molecules can be classified as either synergistic or mismatched point-planar chiral [2]rotaxanes. Remarkably, only the synergistic point-planar chiral [2]rotaxanes exhibited tunable circularly polarized luminescence (CPL), with a maximum |glum| value of 0.02, whereas the mismatched configurations yielded no detectable CPL signal. This work overcomes a fundamental bottleneck in the scalable, stereocontrolled synthesis of chiral pillar[5]arene rotaxanes and establishes a robust platform for their development in chiroptical materials.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"116 1","pages":"e6232425"},"PeriodicalIF":16.6,"publicationDate":"2026-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147751287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Subporphyrin Frameworks: A Missing Link Between Porphyrinoids and Porous Aromatic Networks. 亚卟啉框架：卟啉类和多孔芳香网络之间缺失的一环。

IF 16.6 1区化学

Angewandte Chemie International Edition Pub Date : 2026-04-26 DOI: 10.1002/anie.2270272

Liufang Zhao,Panpan Liu,Yuling Zhao,Zhiyong Li,Huiyong Wang,Yang Zhao,Jikuan Qiu,Zhongping Li,Jong-Beom Baek,Jianji Wang

{"title":"Subporphyrin Frameworks: A Missing Link Between Porphyrinoids and Porous Aromatic Networks.","authors":"Liufang Zhao,Panpan Liu,Yuling Zhao,Zhiyong Li,Huiyong Wang,Yang Zhao,Jikuan Qiu,Zhongping Li,Jong-Beom Baek,Jianji Wang","doi":"10.1002/anie.2270272","DOIUrl":"https://doi.org/10.1002/anie.2270272","url":null,"abstract":"Subporphyrins represent a distinctive class of bowl-shaped, π-conjugated, and intrinsically electron-deficient macrocycles that exhibit photophysical and coordination behaviors unlike those of planar porphyrins. While current studies have primarily focused on the synthesis of subporphyrins with an increased number of aromatic rings and complex heterostructures, research on polymeric subporphyrin materials has not yet been reported. Herein, we report the first subporphyrin-based porous aromatic networks (PAF-HNU1 and PAF-HNU2) synthesized by coupling meso-functionalized subporphyrins with rigid aromatic linkers under solvothermal conditions. The frameworks exhibit extended π-delocalization and strong red-shifted absorption covering the UV-vis-NIR region, enabling efficient full-spectrum light harvesting. It was discovered that PAF-HNU2 exhibited high photogenerated charge separation and transport capabilities, as well as outstanding catalytic efficiency for a series of advanced oxidation reactions. Performance was two to three times that of PAF-HNU1 and its porphyrin-based PAF analogues. This work introduces a new family of subporphyrinic porous materials, providing the missing link between porphyrinoid chemistry and extended π-conjugated frameworks, and highlights their potential as a metal-free platform for next generation full-spectrum photocatalytic transformations.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"8 1","pages":"e2270272"},"PeriodicalIF":16.6,"publicationDate":"2026-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147751258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

NaO6 Octahedron-Engineered Sodium Iron Sulfate Cathodes for High-Rate and Sustainable Sodium-Ion Batteries. 高倍率可持续钠离子电池用NaO6八面体工程硫酸铁钠阴极。

IF 16.6 1区化学

Angewandte Chemie International Edition Pub Date : 2026-04-26 DOI: 10.1002/anie.8606538

Jiahao Wang,Bochao Chen,Wenbo Zhou,Zhiyuan Xu,Linyang Wu,Changjie Kan,Mao Guo,Boyuan Li,Long Shang,Shuandi Hou,Haile Cai,Haixia Li,Kai Zhang,Zhenhua Yan

{"title":"NaO6 Octahedron-Engineered Sodium Iron Sulfate Cathodes for High-Rate and Sustainable Sodium-Ion Batteries.","authors":"Jiahao Wang,Bochao Chen,Wenbo Zhou,Zhiyuan Xu,Linyang Wu,Changjie Kan,Mao Guo,Boyuan Li,Long Shang,Shuandi Hou,Haile Cai,Haixia Li,Kai Zhang,Zhenhua Yan","doi":"10.1002/anie.8606538","DOIUrl":"https://doi.org/10.1002/anie.8606538","url":null,"abstract":"The alluaudite-type sulfate Na2Fe2(SO4)3 (NFS) has attracted considerable interest as the cathodes for sodium-ion batteries (SIBs) due to its low cost and high operating voltage. However, it is plagued by sluggish Na+ transport kinetics and irreversible lattice distortion arising from Fe3+ migration. Herein, NaO6 units have been incorporating into NFS to form a sodium-rich site-type sodium iron sulfate (Na6.4[Fe5.5Na0.6](SO4)9), in which Na+ substitution at Fe sites induces intrinsic Na+ occupation of structurally unstable Fe sites, effectively suppressing Fe migration. Meanwhile, the enlarged Fe-Fe spacing within [Fe2O10] dimers mitigates repulsion-driven Fe migration, synergistically enhancing lattice stability. Furthermore, enhanced oxygen ionicity in NaO6 units elongates the rate-determining Na─O bond, thus enhancing the Na+ migration kinetics. As a result, the Na6.4[Fe5.5Na0.6](SO4)9 cathode achieves an impressive rate performance (100.2 and 75.2 mA h g-1 at 0.1 and 20C, respectively), with 98.2% capacity retention after 2000 cycles at 20 C. Moreover, the corresponding pouch cells stably operate for 500 cycles with 80.9% capacity retention. Rather than simply increasing Na occupancy at pre-existing Na sites, this sodium-rich site strategy introduces new Na sites at specific lattice positions, providing a viable design paradigm for advancing low-cost polyanionic Na-storage materials.","PeriodicalId":125,"journal":{"name":"Angewandte Chemie International Edition","volume":"4 1","pages":"e8606538"},"PeriodicalIF":16.6,"publicationDate":"2026-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147751256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0