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Metamaterials made from Ni-based amorphous alloy micro-nanolattices with high mechanical and electrochemical performance

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Progress in Natural science:materials International 2024年第6期34卷 1327-1332页

作者： Wentao Zhang Zhongzheng Yao Changsheng Guo Huiqiang Ying He Zhu Si Lan Herbert Gleiter Institute of Nanoscience School of Materials Science and Engineering Nanjing University of Science and Technology

Amorphous alloys, i.e., metallic glasses, combine high strength, hardness, excellent wear and corrosion resistance, and unique thermoplasticity due to their short-range ordered but long-range disordered glassy structures. However, critical size constraints limit their applications in advanced fields such as electrocatalysis, sensing, and complex devices. Here we report a novel lattice metamaterial fabricated by conformally depositing NiNbSn amorphous alloy coatings onto three-dimensional(3D)-printed polymer scaffolds with a cubic micro-nano lattice template. The cubic lattice design enables efficient stress transfer and uniform strain energy distribution,minimizing stress concentration. Meanwhile, the NiNbSn coating, featuring amorphous and nanocrystalline components, further enhances the structure through size hardening. The resulting hybrid polymer/alloy lattice shows excellent mechanical properties and an exceptional energy absorption capacity. Furthermore, coating the hybrid lattice with a NiMoPB glassy film results in a 3D nano-micro electrode for glucose detection, achieving a sensitivity of 13 times higher than that of the castcounterpart. Our strategy opens a new path to fabricating hybrid polymer/MGs micro-nano lattice structures with excellent mechanical and electrochemical performance, broadening the potential applications of metamaterials.

关键词： Nanocrystals

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Tracing monoclinic distortion in NCM532 cathode materials by in situ high-energy synchrotron X-ray diffraction

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Progress in Natural science:materials International 2024年第2期34卷 274-279页

作者： Min Dong Qingya Sun Zhihua Wang Zixin Rui Zhe Zhang He Zhu Si Lan Herbert Gleiter Institute of Nanoscience School of Materials Science and Engineering Nanjing University of Science and Technology School of Mechanical Engineering Nanjing University of Science and Technology School of Materials Science and Engineering Henan University of Technology Center for Neutron Scattering City University of Hong Kong Shenzhen Research Institute

Layered LiNixCoyMnzO2（NCM） cathode materials have emerged as the best choice for high-energy-density lithium-ion batteries for powering electric *** significant research efforts,the understanding of complex structural dynamics during lithium（de-） intercalation still remains a subject of debate,especially in scenarios where morphology and composition *** this study,we carried out in situ high-energy synchrotron X-ray diffraction experiments on commercial NCM523cathode materials in both single crystal and polycrystalline forms to probe the structural changes during charging and discharging in *** findings reveal that both single crystal and polycrystalline materials exhibit typical H1-H2-H3 phase ***,in polycrystalline NCM532,a monoclinic intermediate phase emerges between the H1 and H2 *** this process,symmetry reduces from R-3m to C2/m,which is attributed to a shear distortion along the ab *** contrast,for single crystal materials,the H1 phase directly transforms into the H2 phase without the monoclinic *** observed monoclinic distortion significantly impacts structural stability and material cycling *** study provides new insight into the structural dynamics in NCM532 cathode materials,particularly concerning morphology-dependent behaviors,which could deepen our understanding of the relationship between NCM material structures and their performance.

关键词： Single crystals

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Electrocatalysis for sustainable nitrogen management: materials innovation for sensing, removal and upcycling technologies

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science China Chemistry 2025年第6期68卷 2322-2342页

作者： Mei Yi Hongmei Li Minghao Xie Panpan Li Zhaoyu Jin Guihua Yu Institute of Fundamental and Frontier Sciences University of Electronic Science and Technology of China College of Materials Science and Engineering and College of Chemistry Sichuan University Materials Science and Engineering Program and Walker Department of Mechanical Engineering The University of Texas at Austin

The global nitrogen cycle holds immense importance due to its crucial role in supporting life, supplying vital nutrients for plant growth, preserving environmental balance, and enabling the proper functioning of ecosystems. However, human activities frequently disrupt this cycle, leading to the accumulation of nitrates and nitrites in water bodies. This accumulation causes environmental pollution and health risks. Traditional methods for treating nitrogen pollution, including biological, physical, and chemical approaches, have inherent limitations. In recent years, electrocatalysis has emerged as a promising and sustainable approach for nitrogen management. This technology offers superior efficiency, high selectivity, and environmental *** not only enables accurate detection of nitrogen pollutants in the environment but also facilitates their conversion into harmless nitrogen gas. Moreover, recent advancements have focused on the upcycling of nitrogen pollutants into valuable compounds,such as ammonia and urea. In this comprehensive review, we showcase the applications of electrocatalysis in sustainable nitrogen management. Specifically, we highlight its use in the sensing, removal, and upcycling of major nitrogen pollutants,including nitrate（NO3-）, nitrite（NO2-）, and nitric oxide（NO）. We discuss the use of catalysts, such as Pd alloys, Cu-based, and Fe-based materials, in electrochemical sensing and catalysis. Additionally, we explore recent advancements in the conversion of nitrogen pollutants into valuable compounds like ammonia and urea. The review also addresses current challenges and future opportunities in the field, including innovations in sensor and catalyst design, as well as large-scale treatment strategies. We anticipate that these perspectives will provide profound insights for effective nitrogen pollution control and sustainable utilization of nitrogen resources.

关键词： electrocatalysis electrochemical sensor nitrogen removal ammonia electrosynthesis C–N coupling

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Unraveling the Harmonious Coexistence of Ruthenium States on a Self-Standing Electrode for Enhanced Hydrogen Evolution Reaction

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Energy & Environmental materials 2024年第6期7卷 303-311页

作者： Joonhee Ma Jin Hyuk Cho Chaehyeon Lee Moon Sung Kang Sungkyun Choi Ho Won Jang Sang Hyun Ahn Seoin Back Soo Young Kim Department of Materials Science and Engineering Korea UniversitySeoul 02841Korea Department of Chemical and Biomolecular Engineering Institute of Emergent MaterialsSogang UniversitySeoul 04107Korea Department of Cogno-Mechatronics Engineering College of Nanoscience and NanotechnologyPusan National UniversityBusan 46241Korea Department of Materials Science and Engineering Research Institute of Advanced MaterialsSeoul National UniversitySeoul 08826Korea School of Chemical Engineering and Material Science Chung-Ang UniversitySeoul 06974Korea

The development of cost-effective,highly efficient,and durable electrocatalysts has been a paramount pursuit for advancing the hydrogen evolution reaction(HER).Herein,a simplified synthesis protocol was designed to achieve a self-standing electrode,composed of activated carbon paper embedded with Ru single-atom catalysts and Ru nanoclusters(ACP/Ru_(SAC+C))via acid activation,immersion,and high-temperature *** initio molecular dynamics(AIMD)calculations are employed to gain a more profound understanding of the impact of acid activation on carbon ***,the coexistence states of the Ru atoms are confirmed via aberration-corrected scanning transmission electron microscopy(AC-STEM),X-ray photoelectron spectroscopy(XPS),and X-ray absorption spectroscopy(XAS).Experimental measurements and theoretical calculations reveal that introducing a Ru single-atom site adjacent to the Ru nanoclusters induces a synergistic effect,tuning the electronic structure and thereby significantly enhancing their catalytic ***,the ACP/Ru_(SAC+C)exhibits a remarkable turnover frequency(TOF)of 18 s^(−1)and an exceptional mass activity(MA)of 2.2 A mg^(−1),surpassing the performance of conventional Pt *** self-standing electrode,featuring harmoniously coexisting Ru states,stands out as a prospective choice for advancing HER catalysts,enhancing energy efficiency,productivity,and selectivity.

关键词： electrocatalysis electronic coupling effect hydrogen evolution reaction selfstanding electrode

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Fabrication of Ni–Mo–Nb metallic glass/micro-nano lattice composite for nonenzymatic glucose sensing

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Progress in Natural science:materials International 2023年第5期33卷 601-606页

作者： Sihan Zhang Wentao Zhang Yu Lou Zixin Rui Zhongzheng Yao Ao Yan Lan Tan Sinan Liu Jiacheng Ge He Zhu Si Lan Herbert Gleiter Institute of Nanoscience School of Materials Science and Engineering Nanjing University of Science and Technology School of Materials Science and Engineering Henan University of Technology Center for Neutron Scattering City University of Hong Kong Shenzhen Research Institute

The rising global diabetic population has ignited significant interest in enzyme-free electrochemical glucose ***,their widespread usage has been severely impeded by the lack of sensing probes with both high sensitivity and *** this work,we present a novel approach for conformally depositing a Ni-Mo-Nb metallic-glass film onto a three-dimensional printed polymer skeleton for glucose *** printing template is designed based on a six-membered tricapped trigonal prism（6M-TTP） structure,which is derived from a medium-range order structure motif observed in amorphous *** fabricated composite combines the high electrochemical activity of Ni-Mo-Nb amorphous alloy with the stability afforded by the micro-nano lattice structure,resulting in a high sensitivity(482 μA mM-1cm-2),a wide linear range（0-1 mM and 1-5 mM）,a low detection limit（2.94 μM）,and good long-term stability and selectivity in alkaline *** work has proposed a new avenue to fabricate complex micro-nano electrodes,potentially offering significant versatility and great promise for widespread applications in the field of electrochemistry.

关键词： Glucose

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Highly efficient cobalt-based amorphous catalyst for peroxymonosulfate activation toward wastewater remediation

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Rare Metals 2023年第4期42卷 1160-1174页

作者： Xue-Chun Zhou Shuang-Qin Chen Ming-Jie Zhou Mai Li Si Lan Tao Feng School of Materials Science and Engineering Herbert Gleiter Institute of NanoscienceNanjing University of Science and TechnologyNanjing210094China School of Material Science and Engineering Nanjing Institute of TechnologyNanjing211167China

Metallic glasses(MGs)are rising novae in the catalytic field,due to their unique amorphous structure,large residual stress,and high density of low coordination ***,there is still an absence of suitable MGs'catalysts for advanced oxidation processes(AOPs)with peroxymonosulfate(PMS),the most efficient and promising wastewater remediation ***,the cobalt-based MG(Co-MG)with a nominal composition of Co_(67)Fe_(4)-Mo_(1.5)Si_(16.5)B_(11)(at%)was utilized as an activator of PMS for azo dye *** results demonstrated that the CoMG/PMS system had an order of magnitude higher efficiency on OrangeⅡ(OII)degradation than the Fe-MG/PMS *** fundamental study and field application,the effect of adding inorganic anions(Cl^(-),HCO_(3)^(-),H_(2)PO_(4)^(-),SO_(4)^(2-),NO_(3)^(-)),environmental factors,and cycle experiments on the catalytic properties of Co-MG were investigated emphatically to evaluate overall degradation *** has demonstrated that the Co-MG with more stability,better corrosion resistance and durability contrasted to *** addition,the excellent catalytic performance of Co-MG was analyzed based on the quenched experiment,electron paramagnetic resonance(EPR),and X-ray photoelectron spectroscopy(XPS)*** present results provide not only a new candidate but also shed light on exploring a new kind of AOPs system based on Co-MGs for wastewater treatment.

关键词： Co-based metallic glass ribbons Inorganic ions Stability Advanced oxidation process Peroxymonosulfate Azo dyes

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An Ultra-Stable, High-Energy and Wide-Temperature-Range Aqueous Alkaline Sodium-Ion Battery with the Microporous C4N/rGO Anode

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Nano-Micro Letters 2025年第7期17卷 168-184页

作者： Mengxiao Li Rui Li Huige Ma Mingsheng Yang Yujie Dai Hai Ping Yu Yuxin Hao Zhihui Wang Bei Wang Mingjun Hu Jun Yang School of Materials Science and Engineering Beihang University Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences School of Nanoscience and Engineering University of Chinese Academy of Sciences Shen Si Lab Shenzhen Institute for Advanced StudyUniversity of Electronic Science and Technology of China

Common anode materials in aqueous alkaline electrolytes,such as cadmium,metal hydrides and zinc,usually suffer from remarkable biotoxicity,high cost,and serious side *** overcome these problems,we develop a conjugated porous polymer （CPP） in-situ grown on reduced graphene oxide（rGO） and Ketjen black （KB）,noted as C4N/rGO and C4N/KB respectively,as the alternative *** results show that C4N/rGO electrode delivers a low redox potential （-0.905 V ***/AgCl）,high specific capacity (268.8 mAh g-1at 0.2 Ag-1),ultra-stable and fast sodium ion storage behavior (216 mAh g-1at 20 A g-1) in 2 M NaOH *** assembled C4N/rGO//Ni（OH）2full battery can cycle stably more than 38,000 ***,by adding a small amount of antifreeze additive dimethyl sulfoxide （DMSO）to adjust the hydrogen bonding network,the low-temperature performance of the electrolyte （0.1 DMSO/2 M NaOH） is significantly improved while hydrogen evolution is ***,the C4N/rGO//Ni（OH）2full cell exhibits an energy density of 147.3 Wh Kg-1and ultra-high cycling stability over a wide temperature range from -70 to 45 ℃.This work provides an ultra-stable high-capacity CPP-based anode and antifreeze electrolyte for aqueous alkaline batteries and will facilitate their practical applications under extreme conditions.

关键词： Alkaline antifreeze electrolyte Aqueous alkaline batteries Organic anode Ultra-high cycling stability Wide temperature range

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Low-threshold anisotropic polychromatic emission from monodisperse quantum dots

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National science Review 2025年第2期12卷 18-28页

作者： Yangzhi Tan Wai Yuen Fu Hemin Lin Dan Wu Xiao Wei Sun Hoi Wai Choi Kai Wang Institute of Nanoscience and Applications Department of Electrical and Electronic Engineering Southern University of Science and Technology Department of Electrical and Electronic Engineering The University of Hong Kong College of New Materials and New Energies Shenzhen Technology University

Colloidal quantum dots（QDs） are solution-processable semiconductor nanocrystals with favorable optoelectronic characteristics, one of which is their multi-excitonic behavior that enables broadband polychromatic light generation and amplification from monodisperse QDs. However, the practicality of this has been limited by the difficulty in achieving spatial separation and patterning of different colors as well as the high pumping intensity required to excite the multi-excitonic states. Here, we have addressed these issues by integrating monodisperse QDs in multi-excitonic states into a specially designed cavity, in which the QDs exhibit an anisotropic polychromatic emission（APE） characteristic that allows for tuning the emission from green to red by shifting the observation direction from perpendicular to lateral. Subsequently,the APE threshold under 300-ps pulsed excitation has been reduced from 32 to 21 μJ cm-2by optimizing the cavity structure. Based on the manipulation of multi-excitonic emission and angle-dependent wavelength selectivity of the developed cavity, we have fabricated a full-color micro-pixel array with a pixel size as small as 23 μm by combining cavity-integrated monodisperse QDs and blue backlight. Furthermore,the threshold of APE under quasi-continuous-wave pumping was as low as 5 W cm-2, indicating its compatibility with commercial LEDs and/or laser diodes. Since APE arises from the multi-excitonic behavior of QDs that supports optical gain, its unprecedentedly low threshold suggests the feasibility of the diode-pumped colloidal QD laser. This work demonstrates a novel method of manipulating the QDs' optical properties beyond controlling their size, composition or structure, and reveals great potential for achieving full-color emission using monodisperse QDs.

关键词： colloidal quantum dots multi-excitonic emission microcavity

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Dual-compressed photoacoustic single-pixel imaging

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National science Review 2023年第1期10卷 187-195页

作者： Yuning Guo Baowen Li Xiaobo Yin Department of Mechanical Engineering University of Colorado Department of Material Science and Engineering Department of Physics Shenzhen Institute for Quantum Science and Engineering Southern University of Science and Technology Materials Science and Engineering Program University of Colorado

Photoacoustic imaging,an acoustic imaging modality with potentially optical resolution in an optical turbid medium,has attracted great ***,the convergence of wavefront optimization and raster scanning in computational photoacoustic imaging leads to the challenge of fast mapping,especially for a spatial resolution approaching the acoustic deep-subwavelength *** a sparse sampling paradigm,compressive sensing has been applied in numerous fields to accelerate data acquisition without significant quality *** this work,we propose a dual-compressed approach for photoacoustic surface tomography that enables high-efficiency imaging with 3D spatial resolution unlimited by the acoustics in a turbid *** dual-compressed photoacoustic imaging with single-pixel detection,enabled by spatially optical modulation with synchronized temporally photoacoustic coding,allows decoding of the fine optical information from the modulated acoustic signal even when the variance of original photoacoustic signals is *** perform a proof-of-principle numerical demonstration of dual-compressed photoacoustic imaging, that resolves acoustic sub-acoustic-wavelength details with a significantly reduced number of measurements,revealing the potential for dynamic *** dual-compressed concept,which transforms unobtrusive spatial difference into spatio-temporal detectable information,can be generalized to other imaging modalities to re alize efficient,high-spatial-resolution imaging.

关键词： photoacoustic imaging compressive sensing single-pixel imaging surface tomography

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2,5-Dimercapto-1,3,4-Thiadiazole(DMCT)-Based Polymers for Rechargeable Metal-Sulfur Batteries

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Energy & Environmental materials 2023年第6期6卷 283-290页

作者： Amruth Bhargav Arumugam Manthiram Materials Science and Engineering Program&Texas Materials Institute The University of Texas at AustinAustin Texas 78712USA

Organosulfur materials are a sustainable alternative to the present-day layered oxide cathodes in lithium-based *** such organosulfur material that was intensely explored from the 1990s to early 2010s is 2,5-dimercapto-1,3,4-thiadiazole(DMCT).However,research interest declined as the electrode reactions with DMCT were assumed to be too sluggish to be *** with the advances in metal-sulfur batteries,we revisit DMCT-based materials in the form of poly[tetrathio-2,5-(1,3,4-thiadiazole)],referred to as *** an appropriate choice of electrode design and electrolyte,pDMCT-S cathode paired with a Li-metal anode shows a capacity of 715 mA h g^(-1)and a Coulombic efficiency of 97.7%at a C/10 rate,thus quelling the concerns of sluggish ***,pDMCT-S shows significantly improved long-term cyclability compared to a sulfur *** into the origin of the stability reveals that the discharge product Li-DMCT in its mesomeric form can strongly bind to polysulfides,preventing their dissolution into the electrolyte and *** unique mechanism solves a critical problem faced by sulfur ***,this mechanism results in a stable performance of pDMCT-S with Na-metal cells as *** study opens the potential for exploring other organic materials that have inherent polysulfide sequestering capabilities,enabling long-life metal-sulfur batteries.

关键词： 2,5-dimercapto-1,3,4-thiadiazole electrochemistry metal-sulfur batteries organopolysulfide organosulfur batteries

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