Rare Metals最新文献

{"title":"Highlighting the electrochemical performance of AB4-type single-phase La0.60Sm0.22Mg0.18Ni4.09Al0.09Mn0.10 hydrogen storage alloy for nickel metal hydride batteries","authors":"Ning Zhang,&nbsp;Hang Lu,&nbsp;Wen-Feng Wang,&nbsp;Qiu-Yue Jia,&nbsp;An-Yi Zhang,&nbsp;Yuan Li,&nbsp;Ning Xi,&nbsp;Shu-Min Han,&nbsp;Lu Zhang","doi":"10.1007/s12598-024-03118-5","DOIUrl":"10.1007/s12598-024-03118-5","url":null,"abstract":"<div><p>Rare earth–Mg–Ni-based superlattice structure alloys have garnered recognition as promising materials for hydrogen storage. However, their application is impeded by suboptimal cycling longevity. The novel AB₄-type alloy emerges as an attractive candidate, distinguished by its good structure stability, high rate capability, and long-term durability. Herein, we designed an AB₄-type La_0.60Sm_0.22Mg_0.18Ni_4.09Al_0.09Mn_0.10 alloy that manifests superior electrochemical performance. The obtained AB₄-type single-phase alloy delivers a high discharge capacity of 375.2 mAh·g⁻¹ and features outstanding discharge ability at high rates, maintaining 121 mAh·g⁻¹ even at a discharge rate of 6C. The excellent high-rate discharge performance can be attributed to its fast charge transfer and hydrogen diffusion kinetics. Moreover, the AB₄-type alloy maintains a capacity retention of 84.5% after 200 cycles and retains 55.7% of its capacity retention even after 500 cycles. This work provides a good alternative to hydrogen storage alloy with high power and long cycling durability performance for nickel metal hydride batteries.</p></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3392 - 3404"},"PeriodicalIF":9.6,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861405","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}

{"title":"Nanoprecipitation behavior in Fe-21Mn-10Al-5Ni-C low-density alloy under continuous cooling conditions","authors":"Xiao-Liang Jia,&nbsp;Gu-Hui Gao,&nbsp;Si-Cheng Jiang,&nbsp;Xiao-Lu Gui,&nbsp;Devesh Misra,&nbsp;Chun Feng,&nbsp;Feng-Ming Zhang","doi":"10.1007/s12598-024-03061-5","DOIUrl":"10.1007/s12598-024-03061-5","url":null,"abstract":"<div><p>Precipitation strengthening is a pivotal mechanism for enhancing the mechanical properties of low-density alloys. A detailed analysis of microstructural evolution during thermal processing is imperative to thoroughly understand its strengthening behavior. This study employed the Bähr D805L quenching dilatometer system to study the formation, evolution, and impact on the contribution of nano-precipitates on the mechanical behavior of Fe-21Mn-10Al-5Ni-C (nominal composition) low-density alloy during continuous cooling. The study unveiled the precipitation mechanism of nano-particles within the austenite (γ) matrix at cooling rates in the range of 40–0.1 °C·s⁻¹. Moreover, the addition of Ni in Fe-21Mn-10Al-5Ni-C low-density alloy enhances the atomic size factor, promoting alloy spinodal decomposition and ordering. During slow cooling, B2 phases precipitate along grain boundaries, accompanied by the formation of a precipitation-free zone (PFZ) near the boundaries and the dissolution of some later nucleated small particles. These phenomena are a primary mechanism that suppresses the precipitation of B2 phases within the γ matrix.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3562 - 3574"},"PeriodicalIF":9.6,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861225","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}

{"title":"Selective quantification of nitrogen dioxide in the presence of interfering gases via electronic modulation of MoS2 by Ru doping","authors":"Zong-Ke Li,&nbsp;Guo-Chen Qi,&nbsp;Wei-Fang Ma,&nbsp;Wei Zhong,&nbsp;Qi-Yan Wang,&nbsp;Rong-Han Wei,&nbsp;Tian-Shui Liang","doi":"10.1007/s12598-024-03162-1","DOIUrl":"10.1007/s12598-024-03162-1","url":null,"abstract":"<div><p>Nitrogen dioxide (NO₂) is a significant air pollutant with harmful effects on human health and the environment. Timely and accurate monitoring of NO₂ concentrations is crucial for improving air quality and protecting public health. However, quantifying NO₂ in the presence of other gases remains challenging. Herein, we integrate Ru onto the MoS₂ surface to form Ru–S–Mo active sites, thereby tuning the electronic structure of MoS₂ for enhanced NO₂ detection. This sensor shows excellent sensitivity (29.7% at 100 × 10⁻⁶ NO₂ and 25 °C), with a linear response to NO₂ ranging from 0.5 to 200 × 10⁻⁶, and a significantly reduced response/recovery time from 160/3636 s for pure MoS₂ to 58/427 s for Ru@MoS₂ at 100 × 10⁻⁶ NO₂. Additionally, the sensor is highly selective for NO₂, exhibiting a response 14 times higher than for other gases, and possesses strong anti-interference capabilities, accurately quantifying NO₂ in the presence of varying H₂ concentrations (10 × 10⁻⁶–200 × 10⁻⁶) with a low RSD of 5.34%. A portable wireless NO₂ monitoring system was successfully constructed using Ru@MoS₂, enabling real-time gas leak detection (10 × 10⁻⁶–50 × 10⁻⁶) with hazard warnings and maintaining a stable response to NO₂ over a 4-week period. This work extends the gas sensing applications of MoS₂ and provides a portable, wireless, and high-selectivity NO₂ sensing method for environmental monitoring and safety assurance.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"3258 - 3268"},"PeriodicalIF":9.6,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861223","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}

{"title":"Research progress of inorganic solid electrolyte materials for all-solid-state sodium-ion batteries","authors":"Xiao-Shan Li,&nbsp;Jin Liang,&nbsp;Xin Cao,&nbsp;Si-Ying Zhu,&nbsp;Yun-Fang Bai,&nbsp;Jia-Wen Sun,&nbsp;He-Bin Luo,&nbsp;Jie Kong","doi":"10.1007/s12598-024-03150-5","DOIUrl":"10.1007/s12598-024-03150-5","url":null,"abstract":"<div><p>Sodium-ion batteries have garnered significant attention due to their abundant sodium resources and low cost, showing great potential for large-scale energy storage. However, traditional sodium-ion batteries, which rely on flammable liquid electrolytes as the ion transport medium, pose safety challenges in practical applications. Using solid-state electrolytes instead of liquid electrolytes can effectively improve the safety and electrochemical performance of battery systems, making solid-state sodium-ion batteries as a highly promising option for energy storage. Solid-state electrolytes are categorized into organic and inorganic types. Inorganic solid-state electrolytes have garnered increased interest for their high ionic conductivity, high ion mobility, excellent mechanical properties, and good thermal stability. This review systematically explores the advancements in various inorganic solid-state electrolytes, including β-Al₂O₃, sodium superionic conductor, sulfide, halide, complex hydride, and anti-perovskite. The review focuses on material preparation, ionic conductivity, and electrochemical properties. Additionally, it addresses the interface challenges between inorganic solid-state electrolytes and electrode materials, along with effective strategies to improve these interfaces.</p><h3>Graphical abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div><div><p>This review systematically explores the advancements in various inorganic solid-state electrolytes, including β-Al2O3, sodium superionic conductors (NASICON), sulfides, halides, complex hydrides, and anti-perovskites. We outline the progress in the development and design of various inorganic solid-state electrolytes and focus on their preparation, ionic conductivity, and electrochemical properties. It also addresses the interface challenges between inorganic solid-state electrolytes and electrode materials, along with effective strategies to improve these interfaces.</p></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 5","pages":"2871 - 2899"},"PeriodicalIF":9.6,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143861224","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}

{"title":"Structure and property evolution of atomically precise palladium clusters","authors":"Chang-Qing Meng,&nbsp;Wan-Yu Cheng,&nbsp;Hao Yan,&nbsp;Hui-Xin Xiang,&nbsp;Chen-Hao Ruan,&nbsp;Yue Zhao,&nbsp;Cong-Qiao Xu,&nbsp;Jun Li,&nbsp;Chuan-Hao Yao","doi":"10.1007/s12598-024-03105-w","DOIUrl":"10.1007/s12598-024-03105-w","url":null,"abstract":"<p>Atomically precise palladium (Pd) clusters are emerging as versatile nanomaterials with applications in catalysis and biomedicine. This study explores the synthesis, structure evolution, and catalytic properties of Pd clusters stabilized by cyclohexanethiol (HSC₆H₁₁) ligands. Using electrospray ionization mass spectrometry (ESI–MS) and single-crystal X-ray diffraction (SXRD), structures of the Pd clusters ranging from Pd₄(SC₆H₁₁)₈ to Pd₁₈(SC₆H₁₁)₃₆ were determined. This analysis revealed a structure evolution from polygonal to elliptical geometries of the Pd_<i>n</i>S_2<i>n</i> frameworks as the cluster size increased. UV–Vis-NIR spectroscopy, combined with quantum chemical calculations, elucidated changes in the electronic structure of the clusters. Catalytic studies on the Sonogashira cross-coupling reactions demonstrated a size-dependent decline in activity attributed to variations in structural arrangements and electronic properties. Mechanistic insights proposed a distinctive Pd^(II)–Pd^(IV) catalytic cycle. This research underscores how ligands and cluster size influence the structures and properties of Pd clusters, offering valuable insights for the future design and application of Pd clusters in advanced catalysis and beyond.</p>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 4","pages":"2822 - 2829"},"PeriodicalIF":9.6,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143786498","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}

{"title":"Degradation of electrical performance of few-layer tungsten selenide-based transistors","authors":"Ben-Song Wan,&nbsp;Run-Hui Zhou,&nbsp;Wen-Kai Yang,&nbsp;Qin Zhang,&nbsp;Xiang-Yu Liu,&nbsp;Zhi-Fu Tan,&nbsp;Cao-Feng Pan,&nbsp;Zheng-Chun Peng","doi":"10.1007/s12598-024-03147-0","DOIUrl":"10.1007/s12598-024-03147-0","url":null,"abstract":"<div><p>Semiconducting transition-metal dichalcogenides (TMDs) have garnered significant interest due to their unique structures and properties, positioning them as promising candidates for novel electronic and optoelectronic devices. However, the performance of TMDs-based devices is hampered by the suboptimal quality of metal electrodes contacting the atomically thin TMDs layers. Understanding the mechanisms that influence contact quality is crucial for advancing TMDs devices. In this study, we investigated the conductive properties of tungsten selenide (WSe₂)-based devices with different film thicknesses. Using the transmission line method, a negative correlation between contact resistance and film thickness in multi-electrode devices was revealed. Additionally, repeatability tests conducted at varied temperatures indicated enhanced device stability with increasing film thickness. Theoretical analysis, supported by thermionic emission theory and thermal simulations, suggests that the degradation in electrical properties is primarily due to the thermal effect at the contact interface. Furthermore, we found that van der Waals contacts could mitigate the thermal effect through a metal transfer method. Our findings elucidate the critical role of contact resistance in the electronic performance of 2D material-based field-effect transistors (FETs), which further expands their potential in the next generation of electronic and optoelectronic devices.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 4","pages":"2534 - 2546"},"PeriodicalIF":9.6,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143786494","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}

{"title":"Intrinsic mechanisms influencing the tensile fracture reliability of CuZr-based amorphous microwires","authors":"Shuang Su,&nbsp;Chang-Yu Liu,&nbsp;Xin Su,&nbsp;Yagnesh Shadangi,&nbsp;Guan-Yu Cao,&nbsp;Zhi-Liang Ning,&nbsp;Jian-Fei Sun,&nbsp;Yong-Jiang Huang,&nbsp;Jürgen Eckert","doi":"10.1007/s12598-024-03129-2","DOIUrl":"10.1007/s12598-024-03129-2","url":null,"abstract":"<div><p>Amorphous microwires (AMWs) are well known for their high strength and elastic limit, making them excellent candidates for various engineering applications. However, one of the key challenges in utilizing AMWs is their inherent variability in mechanical performance, particularly in achieving stable fracture strength across different compositions. This study provides critical insights into the relationship between microstructure and mechanical behavior by investigating CuZr-based AMWs with varying compositions during quasi-static tensile fracture. Specifically, uniaxial tensile tests on Cu₄₈Zr₄₈Al₄, Cu₄₅Zr₄₅Co₁₀, and Cu₄₈Zr_47.2Al₄Nb_0.8 AMWs, combined with log-normal and Weibull statistical analysis, revealed that Cu₄₈Zr_47.2Al₄Nb_0.8 exhibits the highest fracture reliability (<i>m</i>_Tr = 3.97) and fracture threshold (<i>σ</i>_μTr = 1307 MPa), while Cu₄₈Zr₄₈Al₄ showed the lowest performance (<i>m</i>_Tr = 3.08,<i> σ</i>_μTr = 1085 MPa). Moreover, a standard power-law relationship exists between the characteristic size <i>L</i> of the fracture surface and the degree of order <i>O</i> was established, linking atomic mixing enthalpy and atomic radius to structural homogeneity and fracture behavior. This study provides an important perspective for optimizing AMW compositions to achieve higher fracture strength and improve the reliability for engineering applications.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 4","pages":"2682 - 2694"},"PeriodicalIF":9.6,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143786495","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}

{"title":"Theoretically probing intrinsic properties of γ′ phase in FeCoNiTiAl high-entropy alloys","authors":"Qiang Yu,&nbsp;Guan-Cheng Gu,&nbsp;Xiang Gao,&nbsp;Zheng-Ning Li,&nbsp;Zeng-Bao Jiao,&nbsp;Wei-Wei Xu","doi":"10.1007/s12598-024-03052-6","DOIUrl":"10.1007/s12598-024-03052-6","url":null,"abstract":"<p>The intrinsic properties of the γ′ phase are well known to be of critical importance for the targeted control of the mechanical performance of γ/γ′ high entropy alloys (HEAs). In the present work, a composition tuning strategy is employed to modulate the thermal stability, elastic properties, and deformation mechanisms of the γ′ phase in (FeCoNi)₈₆Ti₇Al₇ HEAs using ab initio methods. Prior to tailoring the alloying elements, the temperature-dependent stability of the γ′ phase is meticulously investigated by considering both enthalpic and entropic contributions. The findings reveal that the primary vibrational entropy can be effectively substituted by an empirical parameter (<i>δ</i>) to expedite the design of stable HEAs. Subsequently, based on the individual effects of elements on the order–disorder transformation temperatures (<i>T</i>_od) and practical considerations for high-temperature applications, eight substituting elements (Nb, Mo, Ta, W, V, Cr, Mn and Cu) are judiciously selected from the 3d, 4d and 5d transition metal series. The results indicate that Nb and Ta are the most ideal substituting elements for the γ′ phase, as they concurrently enhance the <i>T</i>_od, shear modulus, hardness, ductility, and antiphase boundary energy. These insights open a promising avenue for the innovative design of strong-yet-ductile γ/γ′ HEAs.</p><p>γ/γ′型高熵合金的力学性能严重依赖于γ′析出沉淀相的本征性能, 包括高温热稳定性, 弹性性能以及独特的变形机理。利用第一性原理计算方法, 本文对 (FeCoNi)₈₆Ti₇Al₇ 高熵合金中γ′相的本征性能及其合金化策略进行了深入的探索。研究表明, γ′相的热稳定性取决于熵-焓的竞争: 随着温度的升高, 其晶体结构由低温下焓稳定的L1₂结构逐渐转变为高温下熵稳定的面心立方结构。其中, 熵贡献中最重要的振动熵与描述晶格畸变的经验参数<i>δ</i>具有粗略的正相关关系。基于这种正相关和熵-焓竞争关系, γ′相的有序无序转变温度 (<i>T</i>_od) 可快速地被预测, 极大地节省了计算成本。通过同时考虑<i>T</i>_od, 密度和熔点等实际高温应用的需求, 最终从元素周期表3d, 4d, 5d的过渡族元素中选出了Nb, Mo, Ta, W, V, Cr, Mn和 Cu八种潜在的有利元素, 并对其在γ′相弹性性能和变形机理上的影响进行了对比。结果表明, Ta和Nb是最理想的两种合金化元素, 可同时提高γ′相的高温热稳定性, 模量, 硬度, 塑性和层错能。这些见解将为开发强度塑性兼备的新型γ/γ′型高熵合金提供有效的指导。</p>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 4","pages":"2720 - 2734"},"PeriodicalIF":9.6,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143786373","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}

{"title":"Inhibiting lattice strain for highly stable and long-life Li-rich Mn-based layered cathodes","authors":"Wen-Zhao Huang,&nbsp;Wei Wang,&nbsp;Xiao-La Li,&nbsp;Zi-Yang Liang,&nbsp;Bo-Yang Zhang,&nbsp;Chen-Yu Liu,&nbsp;Qi Liu,&nbsp;Zhan Lin,&nbsp;Dong Luo","doi":"10.1007/s12598-024-03149-y","DOIUrl":"10.1007/s12598-024-03149-y","url":null,"abstract":"<div><p>The utilization of Li-rich layered oxides (LLOs) as cathodes in high-energy Li-ion batteries is significantly hindered by serious voltage decay and capacity fading due to irreversible oxygen release and transition metal (TM) migration triggered by the lattice strain. Herein, B ions are effectively incorporated into the tetrahedral vacancies situated between TM slab and Li layer of LLOs. The robust B-O bond, along with the low Bader charge of oxygen within BO₄ tetrahedra, alleviates excessive oxidation of O anions while substantially reinforcing the oxygen framework. Consequently, the B-doped LLO sample exhibits only slight variation in lattice parameters, especially the <i>c</i>-axis, which can be characterized as exhibiting “zero-strain” as supported by in situ XRD data. As a result, the discharge capacity of the B-LLO sample maintains 210.66 mAh·g⁻¹ after 300 cycles, with a retention ratio of 90.7%.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 4","pages":"2340 - 2351"},"PeriodicalIF":9.6,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143786376","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}

{"title":"Ru nanoclusters immobilized in N-doped porous carbon for efficient hydrazine-assisted hydrogen production and Zn–hydrazine battery","authors":"Jun-Lin Huang,&nbsp;Hao Zhang,&nbsp;Tian-Yi Suo,&nbsp;Joao Cunha,&nbsp;Zhi-Peng Yu,&nbsp;Wen-Yuan Xu,&nbsp;Liang Chen,&nbsp;Zhao-Hui Hou,&nbsp;Hong Yin","doi":"10.1007/s12598-024-03053-5","DOIUrl":"10.1007/s12598-024-03053-5","url":null,"abstract":"<div><p>Hydrazine-assisted water electrolysis presents a promising and efficient hydrogen production technology. However, developing high-performance hydrazine oxidation reaction (HzOR) and hydrogen evolution reaction (HER) bifunctional catalysts remains challenging. Here, we report a bifunctional electrocatalyst of Ru NCs@NPC, embedding the ultrafine Ru nanoclusters into N-doped porous carbon via microwave reduction. Due to the ultrafine Ru nanoclusters and N doping, the composite exhibits exceptional activity for both HER and HzOR, requiring −55 and −67 mV to reach 10 mA·cm⁻² in alkaline media. In the overall hydrazine splitting (OHzS) system, Ru NCs@NPC is used as both anode and cathode materials, achieving 10 mA·cm⁻² only at 0.036 V. The zinc hydrazine (Zn–Hz) battery assembled with Ru NCs@NPC cathode and Zn foil anode can provide a stable voltage of 0.4 V and exhibit 98.5% energy efficiency. Therefore, integrating Zn–Hz battery with OHzS system enables self-powered H₂ evolution. The density function theory calculations reveal that the Ru–N bond increases the metal–support interaction, </p></div>","PeriodicalId":749,"journal":{"name":"Rare Metals","volume":"44 4","pages":"2502 - 2512"},"PeriodicalIF":9.6,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143786374","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}