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SSRN 2024年

作者： Wang, Minghao Jiang, Nannan Huang, Bing Jin, Huihui Guan, Lunhui CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Key Laboratory of Nanomaterials Fujian Institute of Research on The Structure of Matter Chinese Academy of Sciences Fuzhou350108 China University of Chinese Academy of Sciences Beijing100049 China College of Chemistry Fuzhou University Fuzhou350108 China

Enhanced ordered intermetallic compounds excel in catalyzing the oxygen reduction reaction (ORR). We introduce a novel synthesis strategy based on molecularly engineered to address challenges in high-temperature annealing. It involves the synthesis of carbon platforms with rich edge sites, which serve as effective anchoring points for nanoparticles. By utilizing sulfur anchoring, we synthesize ordered Pt-Co intermetallic with Pt-rich shells (o-PtCo@Pt) that exhibit remarkable ORR performance. Ordered arrangement of Pt-Co endows Pt-shell with compression stress and enhances the oxidation resistance of Pt/Co sites. O-PtCo@Pt exhibits high mass activity (MA, 0.53 A mgPt-1) and specific activity (SA, 1.17 mA cm-2). It exhibits remarkable as cathodic catalyst in proton exchange membrane fuel cells. It achieves power density of 1.14 W cm-2 at 2.0 A cm-2, with MA of 0.50 A mgPt-1 at 0.9 V. It maintains stability with only 8% power density loss after 30,000 cycles, retaining MA of 0.35 A mgPt-1. © 2024, The Authors. All rights reserved.

关键词： Intermetallics

Blue-LED-excitable NIR-Ⅱluminescent lanthanide-doped SrS nanoprobes for ratiometric thermal sensing

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Science China Materials 2022年第4期65卷 1094-1102页

作者： Jiaojiao Wei Youyu Liu Meiran Zhang Wei Zheng Ping Huang Zhongliang Gong Renfu Li Xueyuan Chen College of Chemistry Fuzhou UniversityFuzhou350116China CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Key Laboratory of Nanomaterialsand State Key Laboratory of Structural ChemistryFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou350002China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou350108China

Lanthanide(Ln^(3+))-doped near infrared(NIR)-II luminescent nanoprobes have shown great promise in many technological fields,but are currently limited by the low absorption efficiency of Ln^(3+)due to the forbidden 4f→4f ***,we report a novel NIR-II luminescent nanoprobe based on efficient energy transfer from Ce^(3+)to Er^(3+)and Nd^(3+)in sub-10 nm SrS nanocrystals(NCs),which are excitable by using a commercial blue light-emitting diode(LED).Through sensitization by the allowed 4f→5d transition of Ce^(3+),the NCs exhibit strong NIR-II luminescence from Er^(3+)and Nd^(3+)with quantum yields of 2.9%and 2.3%,***,by utilizing the intense NIR-II luminescence of Er^(3+)from the thermally coupled Stark sublevels of ^(4)I_(13/2),we demonstrate the application of SrS:Ce^(3+)/Er^(3+)NCs as blue-LED-excitable NIR-II luminescent nanoprobes for ratiometric thermal *** findings reveal the unique advantages of SrS:Ln^(3+)NCs in NIR-II luminescence,which may open up a new avenue for exploring novel and versatile luminescent nanoprobes based on Ln^(3+)-doped sulphide NCs.

关键词： SrS lanthanide near-infraredⅡ nanoprobe thermal sensing

Oxygen‑Defect Enhanced Anion Adsorption Energy Toward Super‑Rate and Durable Cathode for Ni–Zn Batteries

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Nano-Micro Letters 2021年第11期13卷 128-141页

作者： Jia Yao Houzhao Wan Chi Chen Jie Ji Nengze Wang Zhaohan Zheng Jinxia Duan Xunying Wang Guokun Ma Li Tao Hanbin Wang Jun Zhang Hao Wang Hubei Key Laboratory of Ferro and Piezoelectric Materials and Devices School of Microelectronics and Faculty of Physics and Electronic ScienceHubei UniversityWuhan 430062People’s Republic of China CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002People’s Republic of China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth MaterialsHaixi InstituteChinese Academy of SciencesXiamen 361021People’s Republic of China

The alkaline zinc-based batteries with high energy density are becoming a research ***,the poor cycle stability and low-rate performance limit their wide ***,ultra-thin CoNiO2 nanosheet with rich oxygen defects anchored on the vertically arranged Ni nanotube arrays(Od-CNO@Ni NTs)is used as a positive material for rechargeable alkaline Ni–Zn *** the highly uniform Ni nanotube arrays provide a fast electron/ion transport path and abundant active sites,the Od-CNO@Ni NTs electrode delivers excellent capacity(432.7 mAh g^(−1))and rate capability(218.3 mAh g^(−1) at 60 A g^(−1)).Moreover,our Od-CNO@Ni NTs//Zn battery is capable of an ultra-long lifespan(93.0%of initial capacity after 5000 cycles),extremely high energy density of 547.5 Wh kg^(−1) and power density of 92.9 kW kg^(−1)(based on the mass of cathode active substance).Meanwhile,the theoretical calculations reveal that the oxygen defects can enhance the interaction between electrode surface and electrolyte ions,contributing to higher *** work opens a reasonable idea for the development of ultra-durable,ultra-fast,and high-energy Ni–Zn battery.

关键词： Ni-Zn battery Oxygen defect Nanotube array CoNiO2 nanosheet Adsorption energy

Tri-profit electrolysis for energy-efficient production of benzoic acid and H_(2)

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Journal of Energy Chemistry 2021年第3期30卷 30-35页

作者： Chi Zhang Suqin Ci Xinxin Peng Junheng Huang Pingwei Cai Yichun Ding Zhenhai Wen Key Laboratory of Jiangxi Province for Persistent Pollutants Control National-Local Joint Engineering Research Center of Heavy Metals Pollutants Control and Resource Utilization and Resources RecycleNanchang Hangkong UniversityNanchang 330063JiangxiChina CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002FujianChina

Electrosynthesis has recently attracted intensive research attentions and holds great potential in implementing scalable green synthesis thanks to more and more readily accessible renewable electric energy.

关键词： Optimized electrolysis system Hydrogen generation Phenylcarbinol conversion Energy efficiency Bi-value-added product

S-Doped Carbon Anchoring Ptco Intermetallic Nanoparticles for Efficient Proton Exchange Membrane Fuel Cells Based on Molecularly Engineered design

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SSRN 2024年

作者： Wang, Minghao Jiang, Nannan Huang, Bing Jin, Huihui Guan, Lunhui CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou350000 China University of Chinese Academy of Sciences Beijing100049 China College of Chemistry Fuzhou University Fuzhou350108 China

Supported ordered intermetallic compounds are known to exhibit superior oxygen reduction catalytic performance compared to disordered alloys. However, achieving the ordered transformation typically requires high-temperature annealing, which may lead to metals sintering and atoms aggregation. To effectively address these challenges, a novel synthesis strategy based on molecularly engineered design has been introduced. This strategy involves the synthesis of carbon platforms with rich edge sites, which serve as effective anchoring points for alloy nanoparticles. By utilizing the anchoring effect of sulfur, we have synthesized an ordered intermetallic platinum-cobalt with a Pt-rich shell (o-PtCo@Pt) and a uniform particle size (~5 nm). Experimental results reveal that the ordered arrangement of Pt-Co endows Pt-shell with compression stress and enhances the oxidation resistance of Pt/Co sites, ultimately boosting the ORR performance. The o-PtCo@Pt catalyst exhibits exceptional ORR performance, with a mass activity (MA) of 0.53 A mgPt-1 and a specific activity (SA) of 1.17 mA cm-2. Furthermore, the o-PtCo@Pt demonstrate exceptional performance as a cathodic catalyst in proton exchange membrane fuel cells (PEMFCs). It achieves a remarkable power density of 1.14 W cm-2 at 2.0 A cm-2, with a MA of 0.50 A mgPt-1 at 0.9 V. Notably, even after undergoing 30,000 cycles of accelerated stability tests (ADT), the power density only decreased 8% to 1.05 W cm-2, while the MA remained at 0.35 A mgPt-1. © 2024, The Authors. All rights reserved.

关键词： Binary alloys

High-Power Hybrid Alkali-Acid Fuel Cell for Synchronous Glycerol Valorization Implemented by High-Entropy Sulfide Electrocatalyst

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SSRN 2023年

作者： Wang, Peng Wang, Genxiang Chen, Kai Pan, Weifan Yi, Luocai Wang, Jun Chen, Qingsong Chen, Junxiang Wen, Zhenhai CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Key Laboratory of Nanomaterials Fujian Institute of Research the Structure of Matter Chinese Academy of Sciences Fujian Fuzhou350002 China University of Chinese Academy of Science Beijing100049 China

Developing highly efficient electrocatalysts for selective glycerol oxidation reaction (GOR) is crucial to implement biomass valorization. Herein, we report a hybrid alkali-acid direct glycerol fuel cell (DGFC) that can not only deliver a high power density but also enable glycerol valorization conversion, which is implemented by FeCoNiCrMnS2 nanoparticles as anode. The FeCoNiCrMnS2 exhibits high activity and selectivity for GOR with low overpotential for 10 mA cm-2 and high Faradaic efficiency toward the formate product. Based on finite element method simulations of element distribution on FeCoNiCrMnS2, a study is conducted using density functional theory in conjunction with Monte Carlo and machine learning simulations to investigate the electrocatalytic sites associated with FeCoNiCrMnS2. The as-developed DGFC can release a maximum peak power density of 50.1 mW cm-2 and stably generate formate with high selectivity. The present work may provide fresh impetus for the development of newly high-entropy materials for a variety of application. © 2023, The Authors. All rights reserved.

关键词： Entropy

Heterometallic Metal-Organic Cage Doped Peo Composite Electrolyte for Solid Lithium Ion Battery

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SSRN 2024年

作者： Shen, Chuanqi Liu, Jin Zhang, Dong-Hai Li, Qing Zhang, Hui Zhuo, Zhu Wang, Wei Nan, Zi-Ang Liu, Luyao Huang, You-Gui CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fujian Fuzhou350002 China Xiamen Key Laboratory of Rare Earth Photoelectric Functional Materials Xiamen Institute of Rare Earth Materials Haixi Institutes Chinese Academy of Sciences Fujian Xiamen361021 China

PEO (polyethylene oxide)-based electrolytes, which is characteristic of the advantages such as good film-forming properties, ease of mechanical processing, and non-reactivity with lithium metal, have been extensively studied. However, there still exist some certain issues related to energy and lifespan of all-solid-state lithium-ion batteries (ASSLIBs). The Cd-In cage [Cd2In3L2Cl5(H2O)9]Cl2 (L = 2,2',2''-(nitrilotris(methylene))tris(1H-benzo[d]imidazole-5-carboxylic acid) in this research can greatly disperse into PEO without significant agglomeration. The intrinsic cavities from the Cd-In cages form channels for lithium ion transport but inhibiting the transport of the corresponding counter anions, thereby protecting the electrode interface by reducing the interfacial reaction. For LFP||PEO-LiTFSI/Cage||Li cell at a fixed current density of 1.0 C, the specific capacity maintained a consistent level of 136 mA.h/g over a span of 100 cycles. This value was higher than those of cells prepared with pristine PEO electrolyte. © 2024, The Authors. All rights reserved.

关键词： Polyethylene oxides

An Aliovalent‐Substituted Inorganic-Open-Framework Anode for High-Performance Potassium-Ion Batteries

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SSRN 2023年

作者： He, Cuihong Zou, Jingmin Sun, Chuanfu Liu, Qin College of Chemistry Fuzhou University Fujian Fuzhou350108 China CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fujian Fuzhou350002 China

Potassium-ion batteries have drawn great attention owing to the abundant and low-cost potassium resources. However, the lack of highly reversible K+-storage electrodes remains a key concern, due to the large size of K+ ions. Inorganic-open-framework KTiOPO4-type (KTP) anodes are promising K+-hosts, due to their large interstitial vacancies allowing fast and reversible insertion of K+ ions with low structural evolution. Here, we report a new member in the KTP family, K0.63Cr0.56Ti0.55OPO4 (KCTP), with partial aliovalent substitution. The KCTP exhibits a high specific capacity of 123.4 mAh/g and achieves stable cycle life, over 135 days with 98% capacity retention at 10 mA/g and up to 9.9 months with 81% retention at 20 mA/g. The K+-storage process involves biphasic reaction and solid-solution reaction, with a minor volume change of only 8.06%. This work demonstrates that inorganic open frameworks with aliovalent substitution may open a promising way to design high-performance potassium-ion batteries. © 2023, The Authors. All rights reserved.

关键词： Anodes

Porous carbon with predominant graphitic nitrogen and abundant defects mediated by reductive molten salt enables boosted sulfur conversion for room-temperature sodium-sulfur batteries

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Chemical Engineering Journal 2025年 516卷

作者： Tang, Kejian Peng, Xiangqi Zhang, Ziying Wang, Yingxinjie Li, Guohao Wang, Jie Chen, Chi Xie, Xiuqiang Wu, Zhenjun College of Chemistry and Chemical Engineering Hunan University Changsha410082 China College of Materials Science and Engineering Hunan University Changsha410082 China CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Provincial Key Laboratory of Nanomaterials Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou350002 China

Room-temperature sodium-sulfur (RT Na-S) batteries are promising for large-scale energy storage. However, their practical applications are still hindered by low S utilization and grievous capacity decay caused by the sluggish sodium polysulfides (NaPSs) conversion kinetics. To address these issues, a multifunctional carbon is prepared by a reductive molten salt (KI) method as the S host. Notably, KI can trigger intense etching reactions under high temperature through its transformation to KIO3 and further decomposition to O2. Owing to its unique etching mechanisms, the KI-mediated carbonaceous host (KI-NC) features in predominant graphitic N configuration, a defect-rich carbon matrix, and ultrahigh specific surface area, in which the defective sites can alter the adsorption mode of graphitic N toward NaPSs, thus significantly enhancing the chemical adsorption toward NaPSs and facilitating NaPSs conversion effectively. The well-developed pore structures can achieve valid physical confinement and improve the S loading ratio. Meanwhile, decreased Rct and RSEI during both charge and discharge processes confirm the boosted kinetics of S redox reactions. Consequently, the as-synthesized cathodes can retain a capacity of 940mAh g−1 after 100 cycles at 0.2C (1C = 1675mAh g−1) and exhibit preeminent rate performance (455mAh g−1 at 3C) with a high sulfur loading of 69.0 wt%. This work opens a new avenue to promote the adsorption and catalysis functions of carbonaceous hosts for RT Na-S batteries. © 2025

关键词： Redox reactions

Separation and recovery of rare earth from waste nickel-metal hydride batteries by phosphate based extraction-precipitation

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Journal of Rare Earths 2022年第6期40卷 974-980,I0005页

作者： Hailan Zhi Shuainan Ni Xiang Su Wenqi Xie Hepeng Zhang Xiaoqi Sun College of Chemistry and Materials Science Fujian Normal UniversityFuzhou 350007China Fujian CAS Key Laboratory of Design and Assembly of Functional Nanostructures and Fujian Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Fujian Research Center for RE Engineering Technology Xiamen Institute of RE MaterialsHaixi InstituteChinese Academy of SciencesXiamen 36102JChina Jiangxi Province Key Laboratory of Cleaner Production of Rare Earths Ganjiang Innovation AcademyChinese Academy of SciencesGanzhou 341000China Ganzhou Rare Earth Group Co. Ltd.China Southern Rare EarthGanzhou 341000China

A novel type of extraction-precipitation strategy based on phosphate was developed to recover rare earth(RE,i.e.,La,Ce,Nd,and Pr)from waste nickel-metal hydride(NiMH)*** method does not require saponification and organic *** novel phosphates,i.e.,dibenzyl phosphate(DBP),diphenyl phosphate(DPP),triphenyl phosphate(TPP)were studied as *** has high precipitation efficiencies for RE^(3+),which can reach 97.84%,100%,100%and 99.77%,*** addition,the precipitation efficiencies of Mn^(2+),Co^(2+)and Ni^(2+)are less than 1.75%.DBP-RE has the largest particle size(D10=52.6μm,D50=135.35μm,D90=296.08μm),which is much larger than the precipitations formed by NH_(4)HCO_(3),H_(2)C2O_(4),CaO and *** larger precipitation particle sizes contribute to improving the solid-liquid separation *** 3 mol/L hydrochloric acid,the stripping efficiency of DBP-RE reaches 98.60%,and the purity of recovered RE is 99.85%.The regenerated DBP can be directly used for the recycling ***,the novel extraction-precipitation strategy is a green and sustainable separation method.

关键词： Waste nickel-metal hydride battery Rare earth Extraction-precipitation Phosphonic acid(ester)