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Ultra‐low single‐atom Pt on g‐C_(3)N_(4)for electrochemical hydrogen peroxide production

Carbon Energy 2023年第9期5卷 101-112页

作者： Hongcen Yang Niandi Lu Juntao Zhang Rui Wang Shuhao Tian Mengjun Wang Zhixia Wang Kun Tao Fei Ma Shanglong Peng National&Local Joint Engineering Laboratory for Optical Conversion Materials and Technology School of Physical Science and TechnologySchool of Materials and EnergyElectron Microscopy CentreLanzhou UniversityLanzhouChina State Key Laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamenChina

Platinum-based materials show excellent electrocatalytic performance and have good potential for use in fuel ***,the high cost and scarce reserves have restricted their wide ***,it is a challenging task to reduce the amount of Pt as well as ensure good catalytic ***,anchoring of Pt single atoms(0.21 wt‰)with ultra-low content on g-C_(3)N_(4)nanosheets(Pt_(0.21)/CN)has been successfully *** obtained Pt_(0.21)/CN catalyst shows excellent two-electron oxygen reduction(2e-ORR)capability for hydrogen peroxide(H_(2)O_(2)).Compared with CN,its H_(2)O_(2)selectivity increased from 80%to 98%in 0.1M KOH,surpassing those in most of the reported ***,the H_(2)O_(2)production rate of Pt_(0.21)/CN is 767 mmol gcat^(-1)h-1,which is 11.1 times that of *** work may pave the way toward the development of an effective method for the design of noblemetal electrocatalysts with low metal loading and high catalytic activity.

关键词： g‐C_(3)N_(4) hydrogen peroxide platinum single‐atom two‐electron oxygen reduction reaction

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Free-standing ternary metallic sulphides/Ni/C-nanofiber anodes for high-performance lithium-ion capacitors

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Journal of Energy Chemistry 2020年第3期29卷 108-115页

作者： Ting Xing Yinghui Ouyang Liping Zheng Xianyou Wang Hong Liu Manfang Chen Ruizhi Yu Xingyan Wang Chun Wu National Base for International Science and Technology Cooperation National Local Joint Engineering Laboratory for Key Materials of New Energy Storage BatteryHunan Province Key Laboratory of Electrochemical Energy Storage and ConversionSchool of ChemistryXiangtan UniversityXiangtan 411105HunanChina College of Material Science and Engineering Changsha University of Science&TechnologyChangsha 410114HunanChina

As a promising energy-storage device,the hybrid lithium-ion capacitor coupling with both a large energy density battery-type anode and a high power density capacitor-type cathode is attracting great *** the sake of improving the energy density of hybrid lithium-ion capacitor,the free-standing anodes with good electrochemical performance are ***,we design an effective electrospinning strategy to prepare free-standing MnS/Co4S3/Ni3S2/Ni/C-nanofibers(TMSs/Ni/C-NFs)film and firstly use it as a binder-free anode for hybrid lithium-ion *** find that the carbon nanofibers can availably prevent MnS/Co4S3/Ni3S2/Ni nanoparticles from aggregation as well as significantly improve the electrochemical ***,the binder-free TMSs/Ni/C-NFs membrane displays an ultrahigh reversible capacity of 1246.9 m Ah g-1at 100 m A g-1,excellent rate capability(398 mAh g-1 at2000 mA g-1),and long-term cyclic ***,we further assemble the hybrid lithium-ion capacitor,which exhibits a high energy density of 182.0 Wh kg-1at 121.1 W kg-1(19.0 Wh kg-1 at 3512.5 W kg-1)and remarkable cycle life.

关键词： Electrospinning Free-standing Ternary metallic sulphides Hybrid lithium-ion capacitor Energy density

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Solid-state synthesis and ion transport characteristics of the β-KSbF_(4) for all-solid-state fluoride-ion batteries

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Journal of Energy Chemistry 2024年第7期94卷 758-767页

作者： Jiali Liu Huahui Zhao Jingcheng Xia Lingguang Yi Xiaoyi Chen Dongdu Li Shuhan Ni Xinyi Su Yixuan Chen Min Liu Xianyou Wang National Base for International Science&Technology Cooperation National Local Joint Engineering Laboratory for Key Materials of New Energy Storage BatteryHunan Province Key Laboratory of Electrochemical Energy Storage&ConversionSchool of ChemistryXiangtan UniversityXiangtan 411105HunanChina College of New Energy Ningbo University of TechnologyNingbo 315336ZhejiangChina

All-solid-state fluoride ion batteries(FIBs)have been recently considered as a post-lithium-ion battery system due to their high safety and high energy *** like all solid-state lithium batteries,the key to the development of FIBs lies in room-temperature electrolytes with high ionic conductivity.β-KSbF_(4) is a kind of promising solid-state electrolyte for FIBs owing to its rational ionic conductivity and relatively wide electrochemical stability window at room ***,the previous synthesis routes ofβ-KSbF_(4) required the use of highly toxic hydrofluoric acid and the ionic conductivity of as-prepared product needs to be further ***,the β-KSbF_(4) sample with an ionic conductivity of 1.04×10^(-4)s cm^(-1)(30°C)is synthesized through the simple solid-state *** order to account for the high ionic conductivity of the as-synthesizedβ-KSbF_(4),X-ray diffraction(XRD),scanning electron microscopy(SEM),and energy dispersive X-ray spectroscopy(EDS)are used to characterize the physic-ochemical *** results show that the as-synthesizedβ-KSbF_(4) exhibits higher carrier concentra-tion of 1.0×10^(-6)S cm-Hz^(-1)K and hopping frequency of 1.31×10^(6)Hz at 30°C due to the formation of the fluorine ***,the hopping frequency shows the same trend as the changes of ionic conductivity with the changes of temperature,while the carrier concentration is found to be almost *** two different trends indicate the hopping frequency is mainly responsible for the ionic conduc-tion behavior withinβ-KSbF_(4).Furthermore,the all-solid-state FIBs,in which Ag and Pb+PbF_(2) are adopted as cathode and anode,andβ-KSbF_(4) as fluoride ion conductor,are capable of reversible charge and *** assembled FIBs show a discharge capacity of 108.4 mA h g^(-1) at 1st cycle and 74.2 mA h g^(-1) at 50th *** on an examination of the capacity decay mechanism,it has been found that deterioration of the electrolyte/electrode int

关键词： Solid-state electrolyte Carrier concentration Hopping frequency β-KSbF_(4) All-solid-state fluoride ion batteries

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Flexible and free-standing La_(0.33)Ti_(2)(PO_(4))_(3)/C nanofibers film as a novel high-performance anode for sodium-and potassium-ion batteries

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Rare Metals 2023年第10期42卷 3387-3398页

作者： Jing Dai Jian Jing Jian-Ping Yang Wen Zhang Shao-Xiong Liu Qian-Fu Wang Jia-Xing Wen Hai Hu Hui-Fang Li Li Liu National Base for International Science&Technology Cooperation National Local Joint Engineering Laboratory for Key Materials of New Energy Storage BatteryKey Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of EducationHunan Province Key Laboratory of Electrochemical Energy Storage and ConversionSchool of ChemistryXiangtan UniversityXiangtan411105China College of Electromechanical Engineering Shandong Engineering Laboratory for Preparation and Application of High-Performance Carbon-MaterialsQingdao University of Science&TechnologyQingdao266061China

Na superionic conductor(NASICON)-type La_(0.33)Ti_(2)(PO_(4))_(3)(LaTP) is firstly proposed as sodium/potassium storage *** density functional theory(DFT) calculations show that LaTP has good electronic character and low Na^(+)/K^(+)migration *** flexible La_(0.33)Ti_(2)(PO_(4))_(3)/C nanofiber film is synthesized via electrostatic spinning and investigated as free-standing electrode applied to sodium-ion batteries(SIBs) and potassiumion batteries(PIBs) in this *** low band gap and Na^(+)/K^(+) migration barriers of LaTP,unique morphology,and complete conductive carbon net allow the La_(0.33)Ti_(2)(PO_(4))_(3)/C nanofibers film to deliver high capacity(296.3 mAh·g^(-1) for SIBs and 235.8 mAh·g^(-1) for PIBs),excellent rate performance(142.5 mAh·g^(-1) for SIBs and50.5 mAh·g^(-1) for PIBs at 1.00 A·g^(-1)),and superior cyclability above 1000 *** full-cell tests show that the material has a good application prospect,indicating a promising flexible anode material for SIBs and PIBs.

关键词： Potassium-ion batteries(PIBs) Sodium-ion batteries(SIBs) Flexible La_(0.33)Ti_(2)(PO_(4))_(3)/C nanofibers film The first-principles calculations Migration potential energy

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Multifunctional Ion/Electron-Conductive Interlayers for Enhanced Solid-State Aluminum Batteries

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Advanced Functional materials 2025年

作者： Li, Gangyong Wang, Zhaodi Li, Zhi Chen, Rui Li, Huan Wang, Yanze Lu, Yonghong Zhu, Yucan Zhou, Miao Liu, Jiali He, Binhong Hou, Zhaohui Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials School of Chemistry and Chemical Engineering Hunan Institute of Science and Technology Yueyang 414006 China School of Energy and Electrical Engineering Hunan Institute of Science and Technology Yueyang 414006 China Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials College of Mechanical Engineering Hunan Institute of Science and Technology Yueyang 414006 China National Base for International Science & Technology Cooperation National Local Joint Engineering Laboratory for Key Materials of New Energy Storage Battery Hunan Province Key Laboratory of Electrochemical Energy Storage & Conversion School of Chemistry Xiangtan University Xiangtan 411105 China

Non-aqueous rechargeable aluminum batteries (RABs) have emerged as promising next-generation energy storage systems owing to their inherent advantages of abundant resource availability, high theoretical capacity, and superior operational safety. Nevertheless, critical challenges persist in conventional RABs employing chloroaluminate ionic liquid electrolytes (ILEs) and high-capacity metal selenide cathodes, particularly regarding aluminum dendrite formation and pronounced shuttle effects. To address these challenges, an innovative solid-state battery architecture is proposed incorporating an ionic-electronic dual-conductive interlayer (NCIL) strategically positioned between a gel polymer electrolyte (GPE) and a conversion-type CuSe cathode. Combined experimental investigations and theoretical analyses demonstrate that the rationally designed NCIL serves triple functions: 1) effectively confining soluble intermediates to enhance active material utilization efficiency, 2) modulating ion transport characteristics by increasing the anion transference number (t = 0.30), thereby promoting reaction kinetics, and 3) suppressing aluminum dendrite proliferation. As a consequence, the optimized Al|GPE/NCIL|CuSe configuration delivers an ultrahigh specific capacity of 1438 mAh g⁻¹ at 0.1 A g⁻¹ and efficiently operates over 5000 cycles at 1.0 A g⁻¹, markedly outperforming both conventional liquid-state (Al|ILE|CuSe) and solid-state (Al|GPE|CuSe) counterparts. This interfacial engineering strategy establishes a new paradigm for developing durable, high-energy-density aluminum-based energy storage systems through synergistic electrolyte-electrode interface optimization. © 2025 Wiley-VCH GmbH.

关键词： aluminum battery CuSe gel polymer electrolyte nitrogen-doped carbon shuttle effect

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Intermediates transformation for efficient perovskite solar cells

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Journal of Energy Chemistry 2021年第1期30卷 102-114,I0004页

作者： Zhizai Li Yi Sun Huanhuan Yao Jing Zhao Qian Wang Liming Ding Zhiwen Jin School of Physical Science and Technology&Key Laboratory for Magnetism and Magnetic Materials of MoE&Key Laboratory of Special Function Materials and Structure Design MoE&National&Local Joint Engineering Laboratory for Optical Conversion Malerials and TechnologyLanzhou UniversiyLanzhou 730000 GansuChina School of Physics Changhi UnversityChornghi 830100 Xinjiang Uygur Autonomous RegionChina Center for Excllence in Nanoscience(CAS) Key Laboratony of Nonosystem anp Hierarchical Fabrication(CAS)Nationol Center for Nanoscience and TechnologyBeijing 100190China

Perovskite materials have made a great progress in terms of the power conversion efficiency(PCE), rising from 3.8% to 25.2%. To obtain pinhole-free, superior crystal, and high-quality perovskite films with less defect, intermediates transformation is important, which has been clearly studied and widely *** this review, we systematically summarize the commonly formed intermediates and detailedly analyze their mechanisms from five aspects:(1) Solvent-induced intermediate;(2) HI-induced intermediate;(3)CH3NH2-induced intermediate;(4) MAAc-induced intermediate;(5) other intermediates. Finally, we also provide some prospects on high-quality perovskite fabrication based on using intermediates prudently.

关键词： Intermediate Formation energy Crystalline dynamics Solubility Nucleation sites

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Reduced CoNi2S4 nanosheets decorated by sulfur vacancies with enhanced electrochemical performance for asymmetric supercapacitors

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Science China materials 2020年第7期63卷 1216-1226页

作者： Yanpeng Liu Yuxiang Wen Yanan Zhang Xiaogang Wu Haoqian Li Hangda Chen Juanjuan Huang Guohan Liu Shanglong Peng National&Local Joint Engineering Laboratory for Optical Conversion Materials and Technology School of Physical Science and TechnologyLanzhou UniversityLanzhou 730000China Shenzhen Key Laboratory of Nanobiomechanics Shenzhen Institutes of Advanced Technology Chinese Academy of SciencesShenzhen 518055China Institute of Sensor Technology Gansu Academy of SciencesLanzhou 730000China

Nowadays,it is a matter of great concern to design electrode materials with excellent electrochemical performance for supercapacitors by a safe,efficient and simple *** these characteristics are usually related to the vacancies and impurities in the *** investigate the effect of the vacancies on the electrochemical properties of the supercapacitor cathode material,the uniform reduced CoNi2S4(r-CoNi2S4)nanosheets with sulfur vacancies have been successfully prepared by a one-step hydrothermal *** the formation of sulfur vacancies are characterized by Raman,X-ray photoelectron spectroscopy and other *** the electrode for supercapacitor,the r-CoNi2S4 nanosheet electrode delivers a high capacity of 1918.9 Fg-1 at a current density of 1 A g-1,superior rate capability(87.9%retention at a current density of 20 A g-1)and extraordinary cycling *** with the original CoNi2S4 nanosheet electrode(1226 F g-1at current density of 1 A g-1),the r-CoNi2S4 nanosheet electrode shows a great *** asymmetric supercapacitor based on the r-CoNi2S4 positive electrode and activated carbon negative electrode exhibits a high energy density of 30.3 Wh kg-1 at a power density of 802.1 W kg-1,as well as excellent long-term cycling *** feasibility and great potential of the device in practical applications have been successfully proved by lightening the light emitting diodes of three different colors.

关键词： defect engineering sulfur vacancies electrochemical performance asymmetric supercapacitors

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An Electrochromic Nickel Phosphate Film for Large-Area Smart Window with Ultra-Large optical Modulation

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Nano-Micro Letters 2023年第3期15卷 35-47页

作者： Pengyang Lei Jinhui Wang Yi Gao Chengyu Hu Siyu Zhang Xingrui Tong Zhuanpei Wang Yuanhao Gao Guofa Cai Key Laboratory for Special Functional Materials of Ministry of Education National and Local Joint Engineering Research Center for High‑Efficiency Display and Lighting TechnologySchool of Materials and Engineeringand Collaborative Innovation Center of Nano Functional Materials and ApplicationsHenan UniversityKaifeng 475004People’s Republic of China Key Laboratory of Micro‑Nano Materials for Energy Storage and Conversion of Henan Province Institute of Surface Micro and Nano MaterialsCollege of Chemical and Materials EngineeringXuchang UniversityXuchang 461000HenanPeople’s Republic of China

Exploring materials with high electrochemical activity is of keen interest for electrochemistry-controlled optical and energy storage ***,it remains a great challenge for transition metal oxides to meet this feature due to their low electron conductivity and insufficient reaction ***,we propose a type of transition metal phosphate(NiHPO_(4)·3H_(2)O,NHP)by a facile and scalable electrodeposition method,which can achieve the capability of efficient ion accommodation and injection/extraction for electrochromic energy storage ***,the NHP film with an ultra-high transmittance(approach to 100%)achieves a large optical modulation(90.8%at 500 nm),high coloration efficiency(75.4 cm^(2)C^(-1)at 500 nm),and a high specific capacity of 47.8 mAh g^(-1)at 0.4 A g^(-1).Furthermore,the transformation mechanism of NHP upon electrochemical reaction is systematically elucidated using in situ and ex situ ***,a large-area electrochromic smart window with 100 cm^(2)is constructed based on the NHP electrode,displaying superior electrochromic energy storage performance in regulating natural light and storing electrical *** findings may open up new strategies for developing advanced electrochromic energy storage materials and smart windows.

关键词： Electrochromism Transition metal phosphates optical modulation Smart window Energy storage

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Restraining migration and dissolution of transition-metal-ions via functionalized separator for Li-rich Mn-based cathode with high-energy-density

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Journal of Energy Chemistry 2023年第9期84卷 11-21页

作者： Zhi Li Bao Zhang Gangyong Li Shuang Cao Changmeng Guo Heng Li Ruijuan Wang Jiarui Chen Lei Wu Jiajia Huang Yansong Bai Xianyou Wang National Base for International Science&Technology Cooperation National Local Joint Engineering Laboratory for Key Materials of New Energy Storage BatteryHunan Province Key Laboratory of Electrochemical Energy Storage&ConversionSchool of ChemistryXiangtan UniversityXiangtan 411105HunanChina State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials School of Chemistry and Chemical EngineeringHunan Institute of Science and TechnologyYueyang 414006HunanChina

Lithium-rich manganese-based materials(LRMs) are promising cathode for high-energy-density lithiumion batteries due to their high capacity,low toxicity,and low ***,LRMs suffer from serious voltage decay and capacity fade due to continual migration and dissolution of transition metal ions(TMs) during cycling ***,a novel strategy is proposed to inhibit the TMs migration of LRMs through a modified separator by means of functionalized carbon coating layer,which depends on the chemical constraint of the abundant functional groups in the modified super *** addition,it has been found that the dissolution of TMs can be restrained based on the Le Chatelier's ***,the modified separator owns good wettability toward the *** a result,the LRMs cathode with the modified separator delivers a high discharge capacity of 329.93 mA h g-1 at 0.1 C,and achieves good cyclic performance,the enhanced reaction kinetics and low voltage ***,this work provides a new idea to promote the comprehensive electrochemical performances of Li-ion batteries with LRMs cathode through a strategy of separator modification.

关键词： Lithium-rich manganese-based materials Functionalized separator TMs migration and dissolution Structure stability High-energy-density

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Rational design of an AIE-active metal-organic framework for highly sensitive and portable sensing nitroaromatic explosives

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Chinese Chemical Letters 2023年第3期34卷 481-485页

作者： Luyao Wang Weichao Chen Weilin Song Jingjing Tian Jing Sun Lili Wen Chunyi Sun Xinlong Wang Zhongmin Su Guo-Gang Shan School of Chemistry and Environmental Engineering and Jilin Provincial Science and Technology Innovation Center of Optical Materials and Chemistry Changchun University of Science and TechnologyChangchun 130022China National&Local United Engineering Laboratory for Power Batteries Department of ChemistryNortheast Normal UniversityChangchun 130024China AIE Research Center Shaanxi Key Laboratory of PhytochemistryCollege of Chemistry and Chemical EngineeringBaoji University of Arts and SciencesBaoji 721013China

Herein,we report a new metal-organic framework with an AIE ligand (H_(4)TCPP=2,3,5,6-tetra-(4-carboxyphenyl)pyrazine) and Mg^(2+) ions,that is,[Mg_(2)(H_(2)O)_(4)TCPP]·DMF·5CH_(3)CN (Mg-TCPP,TCPP=tetra-(4-carboxyphenyl)pyrazine) for detection of nitroaromatic *** to the coordination effect and restricted intramolecular rotation,Mg-TCPP exhibits bright blue *** a fluorescent sensor,Mg-TCPP exhibits high selectivity and sensitivity for sensing 2,4,6-trinitrophenol (TNP) by quenching behaviors with the Stern-Volmer quenching constant (K_(SV)) of 3.63×10^(5)L/mol and achieves the low limit of detection of 25.6 ppb,which is beyond most of the previously reported fluorescent ***,the portable Mg-TCPP films are prepared and it can be used for rapid and sensitive TNP detection in a variety of environments including organic solvent and aqueous ***,TNP vapor can be detected within 3 min by naked eye and the film could be regenerated under simple solvent cleaning.

关键词： Metal-organic frameworks Aggregation induced-emission Nitroaromatic compounds Sensor High sensitivity

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