Science China Materials最新文献

{"title":"Superlattice ordering Pt2CoNi intermetallic nanocatalysts with surface microstrain for efficient hydrogen electrocatalysis","authors":"Tao Zhang \u0000 (,&nbsp;),&nbsp;Xin Wang \u0000 (,&nbsp;),&nbsp;Wanqing Song \u0000 (,&nbsp;),&nbsp;Jiahui Feng \u0000 (,&nbsp;),&nbsp;Xinyi Yang \u0000 (,&nbsp;),&nbsp;Haozhi Wang \u0000 (,&nbsp;),&nbsp;Jia Ding \u0000 (,&nbsp;),&nbsp;Wenbin Hu \u0000 (,&nbsp;)","doi":"10.1007/s40843-025-3525-6","DOIUrl":"10.1007/s40843-025-3525-6","url":null,"abstract":"<div><p>Alloying Pt with non-noble metals is effective for optimizing the activity of Pt-based electrocatalysts. However, the development of high-activity and stable hydrogen electrocatalysts remains challenging owing to the random elemental distribution and weak interatomic bonding in alloys. Herein, we reported a Pt₂CoNi intermetallic nanocatalyst rich in surface microstrain for high-performance hydrogen electrocatalysis. The superlattice ordering crystalline structure ensures the specific positions of atoms in this nanocatalyst, resulting in the alternating arrangement of Pt and Co/Ni atoms. In one nanoparticle, multiple Pt₂CoNi grains are arranged along different grain orientations, which generates abundant surface microstrain due to the discrepancy of intermetallic lattice parameters. The unique crystal structure effectively modulates the electron distribution of Pt₂CoNi intermetallic nanocatalyst. The active sites of this nanocatalyst exhibit downshifted d-band centers, leading to accelerated hydrogen adsorption/desorption behavior. Resultantly, the Pt₂CoNi intermetallic nanocatalyst demonstrates impressive bifunctional hydrogen electrocatalytic capabilities for hydrogen evolution reaction (mass activity of 1.02 A/mg_Pt and <i>η</i>₁₀ variation of 3.7 mV after 10,000 cycles) and hydrogen oxidation reaction (kinetic mass activity of 4.08 A/mg_Pt and 97.3% activity retention after 12 h operating at 0.1 V vs. RHE). This work provides a promising route for the development of efficient nanocatalysts with ingenious crystal structures.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 9","pages":"3304 - 3312"},"PeriodicalIF":7.4,"publicationDate":"2025-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144924429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"High work function silver nanowire electrodes via ligand exchange reaction for stretchable organic thin-film transistors","authors":"Yuqi Guo \u0000 (,&nbsp;),&nbsp;Bin Zhao \u0000 (,&nbsp;),&nbsp;Weijia Dong \u0000 (,&nbsp;),&nbsp;Chenhui Xu \u0000 (,&nbsp;),&nbsp;Ruoqi Gao \u0000 (,&nbsp;),&nbsp;Yang Han \u0000 (,&nbsp;),&nbsp;Yunfeng Deng \u0000 (,&nbsp;),&nbsp;Yanhou Geng \u0000 (,&nbsp;)","doi":"10.1007/s40843-025-3448-1","DOIUrl":"10.1007/s40843-025-3448-1","url":null,"abstract":"<div><p>Silver nanowires (AgNWs), as promising conductor materials, have found their application in various stretchable electronics. However, the mismatch between the work function of AgNWs electrodes and energy level of semiconductors limits the obtaining of high-performance devices, especially in stretchable p-type organic thin film transistors (OTFTs) where the resulting severe injection barrier significantly lowers the overall performance of the devices. In this study, we prepared stretchable AgNWs electrodes with high work function that closely matched the highest occupied molecular orbital (HOMO) of the p-type polymer semiconductor poly(indacenodithiophene-<i>co</i>-benzothiadiazole) (IDT-BT) via a ligand exchange reaction with fluorinated molecules and post-treatment-free fabrication. In comparison to the commercial polyvinylpyrrolidone (PVP) stabilized AgNWs, electrodes based on ligand-exchanged AgNWs exhibited higher work function over 5 eV, closer to the HOMO of IDT-BT. As a result, IDT-BT-based p-type OTFTs fabricated using ligand-exchanged AgNWs electrodes achieved a reduced threshold voltage and improved carrier transport property, with a hole mobility of 0.4 cm² V⁻¹ s⁻¹. Moreover, the ligand exchange on the surface of AgNWs caused no deterioration of the deformability of the resulting devices, largely retaining the original mobility after being stretched by 30% strain. These results demonstrate the effectiveness of the work function tuning via the ligand-exchange strategy in the processing of AgNWs electrodes for enhancing the performance of stretchable electronics.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 9","pages":"3194 - 3202"},"PeriodicalIF":7.4,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144924430","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Atomic-scale insights into the strengthening effect of Cu segregation on Al Σ9 (221)[(1bar{1}0)] grain boundary","authors":"Jianteng Wang \u0000 (,&nbsp;),&nbsp;Xinru Wang \u0000 (,&nbsp;),&nbsp;Xudong Rong \u0000 (,&nbsp;),&nbsp;Enzuo Liu \u0000 (,&nbsp;),&nbsp;Chunsheng Shi \u0000 (,&nbsp;),&nbsp;Dongdong Zhao \u0000 (,&nbsp;),&nbsp;Chunnian He \u0000 (,&nbsp;),&nbsp;Naiqin Zhao \u0000 (,&nbsp;)","doi":"10.1007/s40843-025-3561-3","DOIUrl":"10.1007/s40843-025-3561-3","url":null,"abstract":"<div><p>Nanoscale segregation of alien solute atoms at the grain boundary (GB) can enhance the stability and mechanical properties of the GB. Systematic molecular dynamic simulations were conducted to clarify the strengthening effect of Cu segregation on Al Σ9 (221)[<span>(1bar{1}0)</span>] GB. The as-predicted negative segregation energy suggests the strong inclination of Cu segregation at Al GBs. Such segregation is expected to improve GB stability and strength. Detailed structural analysis during the uniaxial tensile test indicates that Cu segregation can reduce the free volume of GB atoms and restrict GB atomic displacement, thereby retarding dislocation nucleation and increasing the tensile strength of the GB. The suppressed atomic migrations by Cu doping also give rise to the exceptional stability of E structures at GB, which can retain their kite shape against structural transition during straining. With Cu segregation, the pattern of dislocation nucleation from GB was shifted from “shuffling-assisted regime” to the “collective-migration regime”, wherein the latter necessitates higher critical stress. Further, Cu-doping was also shown to elevate the GB shear strength via blocking the shear-coupled GB migration when subjected to shear deformation. The enhanced GB resistance against shear straining is attributed to the stabilized E structures with Cu segregation featuring reduced atomic free volume. This study provides atomic-scale insights into the stabilizing and strengthening effect of Cu segregation on Al GBs.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 9","pages":"3344 - 3358"},"PeriodicalIF":7.4,"publicationDate":"2025-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144924439","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Acid-base pairs engineering enables ultra-selective lithium-magnesium separation via sulfonated polybenzimidazole membranes","authors":"Dong Huang \u0000 (,&nbsp;),&nbsp;Xiaohui Ge \u0000 (,&nbsp;),&nbsp;Qian Chen \u0000 (,&nbsp;),&nbsp;Simian Fei \u0000 (,&nbsp;),&nbsp;Qiuhua Li \u0000 (,&nbsp;),&nbsp;Liang Ge \u0000 (,&nbsp;),&nbsp;Tongwen Xu \u0000 (,&nbsp;)","doi":"10.1007/s40843-025-3591-6","DOIUrl":"10.1007/s40843-025-3591-6","url":null,"abstract":"<div><p>Development of high-performance ion-selective membranes is crucial for achieving efficient ion separation in water treatment and energy storage applications. In this study, we demonstrate the strategic incorporation of acid-base pairs within a polybenzimidazole matrix through controlled sulfonation. By leveraging these intermolecular interactions, we enhance the Li⁺/Mg²⁺ selectivity of the membrane. At an optimal sulfonation degree, the SP45 membrane forms a cross-linked structure, featuring contracted ionic clusters and discrete hydrophilic domains with limited interconnectivity. This unique microstructure imposes significantly higher energy barriers for the transmembrane transport of Mg²⁺, thereby endowing the SP45 membrane with exceptional perm-selectivity of 48.1 at a current density of 2 mA cm⁻². Cycling stability tests reveal that the Li⁺/Mg²⁺ selectivity degradation remains below 10% across multiple cycles in diverse mixed-salt systems. In practical brine ion distillation tests, we achieved a separation factor of exceeding 60,000 between Li⁺ and Mg²⁺ utilizing a 4-stage ion-distillation device equipped with the prepared SP45 membranes. This work provides fundamental insights into ion transport regulation through molecular-level acid-base pairs engineering, opening new avenues for advanced ion-selective separation membranes.</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 9","pages":"3359 - 3367"},"PeriodicalIF":7.4,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144924452","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photopatternable gel electrolytes for stretchable solid-state organic electrochemical transistors","authors":"Liqun Tang \u0000 (,&nbsp;),&nbsp;Xue Zheng \u0000 (,&nbsp;),&nbsp;Mingyuan Sun \u0000 (,&nbsp;),&nbsp;Xiaochen Ren \u0000 (,&nbsp;),&nbsp;Wei Huang \u0000 (,&nbsp;),&nbsp;Long Ye \u0000 (,&nbsp;),&nbsp;Chuanfei Guo \u0000 (,&nbsp;),&nbsp;Yi-Xuan Wang \u0000 (,&nbsp;),&nbsp;Wenping Hu \u0000 (,&nbsp;)","doi":"10.1007/s40843-025-3429-x","DOIUrl":"10.1007/s40843-025-3429-x","url":null,"abstract":"<div><p>Organic electrochemical transistors (OECTs), functioning as transduction amplifiers, demonstrate considerable potential for integration into biosensors and wearable technologies. However, conventional OECTs demonstrate limited stability in conformal sensing on biointerfaces, primarily due to their poor ductility and liquid-electrolyte-gated operation mechanisms. A double-network-based stretchable gel electrolyte is presented, simultaneously integrating exceptional mechanical compliance and high ionic conductivity. OECT arrays, gated through photopatterned gel electrolytes, demonstrate high uniformity in electrical performance. Besides, the solid-state devices show remarkable electrical stability when subjected to 50% strain, thus facilitating continuous electrocardiogram monitoring under mechanical deformation. This validates its application potential in ambulatory healthcare systems requiring long-term biosensing.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 9","pages":"3212 - 3218"},"PeriodicalIF":7.4,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144924447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Single-atom zinc controlled-release catalysts for efficient vulcanization of rubber","authors":"Qi Zhang, Ge Yu, Xiaoping Gao, Peng Li, Ze Lin, Ruilong Li, Yuen Wu","doi":"10.1007/s40843-025-3472-2","DOIUrl":"https://doi.org/10.1007/s40843-025-3472-2","url":null,"abstract":"<p>Reducing the amount of zinc oxide (ZnO) is a continuous pursuit of the rubber industry because of the high cost and environmental pollution of Zn. However, reducing the amount of ZnO will inevitably lead to a decrease in the crosslinking density and the loss of mechanical properties of rubber; thus, this remains a huge challenge. Herein, we prepared Zn single-atoms supported on graphene oxide (Zn SAs@GO) as controlled-release catalysts for effective rubber vulcanization, which can improve the crosslinking density and mechanical properties of rubber by reducing Zn dosage compared to commercial ZnO by 82.5%. X-ray absorption spectroscopy (XAS) analysis reveals that Zn–O bond is 2.03 Å in Zn SAs@GO, which possesses moderate Zn–O binding energy. Thus Zn²⁺ ions can be controlled-release and participate in the vulcanization reaction with higher activity. Moreover, due to the homogeneous dispersion of Zn atoms in Zn SAs@GO, zinc catalysts were fully utilized during the vulcanization process, resulting in a 6.6% increase in crosslinking density of the prepared vulcanized rubber compared to that of commercial ZnO. This work contributes to the development of large-scale preparation for SACs and potentially pave the way for their applications in industrial rubber manufacture.\u0000</p>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"14 1","pages":""},"PeriodicalIF":8.1,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144924441","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inducing B-site distortion in Gd3Sc1.5In0.5Ga3O12 garnet to accommodate Cr3+ ions: achieving high quantum efficiency and thermally stable broadband NIR phosphors for NIR spectroscopy applications","authors":"Di Qian, Yahong Jin, Haoyi Wu, Yihua Hu","doi":"10.1007/s40843-025-3469-7","DOIUrl":"https://doi.org/10.1007/s40843-025-3469-7","url":null,"abstract":"<p>Broadband near-infrared (NIR) phosphors are crucial for assembling portable NIR light sources. However, developing efficient and thermally stable broadband NIR phosphors remains challenging. Here, a novel Cr³⁺-doped garnet phosphor, Gd₃Sc_1.5In_0.5Ga₃O₁₂:Cr³⁺, is developed by modulating the six-coordinate polyhedral structure. Under 460 nm blue light excitation, it exhibits broadband NIR emission centered at 775 nm with a full width at half maximum (FWHM) exceeding 135 nm, which is attributed to the increased distortion of the B-sites via cation substitution. Specifically, substituting Sc³⁺ with In³⁺ in the designed samples reduces the local site symmetry, overcomes the parity selection rule, and results in greater oscillator strength for electronic transitions, thereby improving optical properties. This leads to an impressive internal quantum efficiency (IQE) of 98.29%, along with excellent thermal stability performance (<i>I</i>_{423 K} = 85.50%), which is conducive to practical applications in NIR light sources. The NIR phosphor-converted light-emitting diode (pc-LED) fabricated with the optimized phosphor and a 460 nm blue LED chip demonstrates an outstanding NIR power conversion efficiency (PCE) of 19.75% at 30 mA and an NIR output power of 276.01 mW at 1200 mA. Potential applications in night vision, non-invasive imaging, and non-destructive testing are explored. These results highlight the enhancement of phosphor performance through cation substitution strategies, achieving a balance between QE and thermal stability. These findings are expected to promote the development of NIR pc-LEDs as high-performance light sources for miniaturized NIR spectrometers.\u0000</p>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"11 1","pages":""},"PeriodicalIF":8.1,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144924446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Regulation of hydrogen evolution reaction and dendrite growth by multifunctional additive for Zn-ion batteries","authors":"Zihao Yin \u0000 (,&nbsp;),&nbsp;Xiaoying Yan \u0000 (,&nbsp;),&nbsp;Yingjie Liu \u0000 (,&nbsp;),&nbsp;Zepeng Gao \u0000 (,&nbsp;),&nbsp;Zhengyu Li \u0000 (,&nbsp;),&nbsp;Zhenbo Qin \u0000 (,&nbsp;),&nbsp;Jinfeng Zhang \u0000 (,&nbsp;),&nbsp;Zhong Wu \u0000 (,&nbsp;),&nbsp;Wenbin Hu \u0000 (,&nbsp;)","doi":"10.1007/s40843-025-3532-0","DOIUrl":"10.1007/s40843-025-3532-0","url":null,"abstract":"<div><p>Aqueous zinc-ion batteries (ZIBs) are considered a promising candidate for replacing lithium-ion batteries in electrochemical energy storage applications. However, the commercial application of ZIBs is severely hindered due to dendritic growth, hydrogen evolution reaction (HER) of Zn anodes, leading to low Coulombic efficiency (CE), short cycle life, and reduced capacity. Herein, a cationic surfactant of polyquaternium-7 (PQ-7) is employed as a multifunctional electrolyte additive to address the issues. Combining experimental measurements and theoretical calculations, it can be found that PQ-7 is adsorbed at the initial tip position on Zn anodes to shield H₂O molecules, thus inhibiting HER. Such competitive adsorption behavior with Zn²⁺ could also mitigate the tip effect to promote uniform deposition instead of Zn dendrite during cycling. Due to the introduction of PQ-7, symmetric Zn∥Zn cells deliver ultrahigh cycling stability over 2117 h (5 mA cm⁻², 1 mAh cm⁻²). Meanwhile, the Zn∥Ti cell demonstrates a CE over 98% after 240 cycles. Furthermore, Zn∥MnO₂ batteries could afford a high-capacity retention of 92.1% after 1000 cycles at 1 C. Even at 5 C, the batteries could still retain 80% capacity after 1000 cycles.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 9","pages":"3288 - 3294"},"PeriodicalIF":7.4,"publicationDate":"2025-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144924432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Broadband-absorbing structurally distorted cocrystal with enhanced nonradiative decay for solar interfacial water evaporation","authors":"Yi Su \u0000 (,&nbsp;),&nbsp;Zefei Zheng \u0000 (,&nbsp;),&nbsp;Lingjie Sun \u0000 (,&nbsp;),&nbsp;Wenzhe Sun \u0000 (,&nbsp;),&nbsp;Yongqi Zhang \u0000 (,&nbsp;),&nbsp;Huapeng Liu \u0000 (,&nbsp;),&nbsp;Chenfei Yang \u0000 (,&nbsp;),&nbsp;Shouzhen Li \u0000 (,&nbsp;),&nbsp;Miaoyu Wang \u0000 (,&nbsp;),&nbsp;Xing Chen \u0000 (,&nbsp;),&nbsp;Shuaishuai Ding \u0000 (,&nbsp;),&nbsp;Fangxu Yang \u0000 (,&nbsp;),&nbsp;Xiaotao Zhang \u0000 (,&nbsp;)","doi":"10.1007/s40843-025-3563-0","DOIUrl":"10.1007/s40843-025-3563-0","url":null,"abstract":"<div><p>Organic cocrystals have become increasingly prevalent in a variety of research domains, owing to the simple preparation, cost-effectiveness, and highly tunable properties. Particularly, the strong charge transfer (CT) interactions in cocrystals render them promising candidates for high-efficiency photothermal conversion materials. However, the majority of reported organic photothermal cocrystals exhibit planar and rigid π-conjugated structures, which restrict molecular vibrations while simultaneously impeding non-radiative dissipation processes—ultimately hindering the enhancement of photothermal conversion performance. Herein, we design a novel non-planar photothermal NMTQ cocrystal, which shows a broadband absorption range of 220–2000 nm and high photothermal conversion efficiencies from ultraviolet (UV) to near-infrared (NIR)-II region. Quantum chemical calculations have been utilized to demonstrate that the distorted butterfly-like conformation in NMTQ is conducive to non-radiative transitions via higher non-adiabatic couplings (NACs) and lower spatial overlap integral (<i>S</i>_r). An interfacial solar evaporation system was constructed using NMTQ cocrystals, achieving an evaporation rate of 2.158 kg m⁻² h⁻¹ with 94.96% solar-to-vapor conversion efficiency under 1 Sun irradiation. The photothermal platform demonstrated simultaneous contaminant removal functionality, establishing a sustainable strategy for clean water production through rational photothermal material design.\u0000</p><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"68 9","pages":"3203 - 3211"},"PeriodicalIF":7.4,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144924426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"(NiZnMg)MoN with optimized d-band center enables industrial-level hydrogen production","authors":"Xunlu Wang, Huashuai Hu, Minghui Yang, J. Paul Attfield","doi":"10.1007/s40843-025-3462-6","DOIUrl":"https://doi.org/10.1007/s40843-025-3462-6","url":null,"abstract":"<p>Developing efficient hydrogen evolution reaction (HER) electrocatalysts based on earth-abundant elements is critical for advancing sustainable energy technologies. However, existing catalysts suffer from suboptimal Gibbs free energy for hydrogen adsorption (Δ<i>G</i>_H*), resulting in significantly lower catalytic performance compared to platinum-based catalysts. In this study, a novel electronegativity modulation strategy was applied to enhance catalytic activity. Inspired by the d-band center (<i>E</i>_d) theory, Zn and Mg were introduced into the catalyst system to regulate the electronic structure. The electronegativity difference induced strong local electronic interactions, which effectively tuned the d-band center of Ni active sites and optimized Δ<i>G</i>_H*. As a result, the (NiZnMg)MoN catalyst exhibited outstanding HER performance with an overpotential of only 138 mV at 300 mA cm⁻², surpassing commercial Pt/C catalysts. This study provides valuable insights into designing efficient doped electrocatalysts based on d-band tuning and electronegativity engineering. The findings offer a promising strategy to overcome performance limitations in HER electrocatalysis and accelerate the practical application of alkaline hydrogen production in sustainable energy systems.\u0000</p>","PeriodicalId":773,"journal":{"name":"Science China Materials","volume":"15 1","pages":""},"PeriodicalIF":8.1,"publicationDate":"2025-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144924434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}