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16.48% Efficient solution-processed CIGS solar cells with crystal growth and defects engineering enabled by Ag doping strategy

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Journal of Energy Chemistry 2025年第1期100卷 59-65页

作者： Mengyu Xu Shaocong Yan Ting Liang Jia Jia Shengjie Yuan Dongxing Kou Zhengji Zhou Wenhui Zhou Yafang Qi Yuena Meng Litao Han Sixin Wu Key Laboratory for Special Functional Materials of MOE National&Local Joint Engineering Research Centre for High-efficiency Display and Lighting TechnologySchool of Nanoscience and Materials EngineeringHenan UniversityKaifeng 475004HenanChina

Solution-processed Cu(In,Ga)Se_(2)(CIGS) solar cells suffer from serious carrier recombination and power conversion efficiency(PCE) loss because of the poor film properties and easy formation of ***, we propose Ag&Se co-selenization strategy to enhance the crystallization and passivate harmful defects of the CIGS films. The formation of Ag-Se phase during the selenization process enables the formation of large grains and suppresses the deep level defects. It is found that Ag doping can enlarge the depletion region width, lower the Urbach energy and prolong the carrier lifetime. As a result, a champion solution-processed CIGS solar cell presents a high efficiency of 16.48% with the highly improved opencircuit voltage(VOC) of 662 m V and fill factor(FF) of 75.8%. This work provides an efficient strategy to prepare high quality solution-processed CIGS films for high-performance CIGS solar cells.

关键词： CIGS solarcells Solution-processedmethod Ag doping Crystal growth Defects engineering

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Improving structure stability of single-crystalline Ni-rich cathode at high voltage by element gradient doping and interfacial modifcation

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Journal of Energy Chemistry 2025年第2期101卷 630-640,I0013页

作者： Ruijuan Wang Yixu Zhang Zhi Li Lei Wu Jiarui Chen Xiaolin Liu Hui Hu Hao Ding Shuang Cao Qiliang Wei Xianyou Wang National Base for International Science&Technology Cooperation of New Energy Equipment Energy Storage Materials and DevicesNational Local Joint Engineering Laboratory for Key Materials of New Energy Storage BatteryHunan Province Key Laboratory of Electrochemical Energy Storage&ConversionSchool of ChemistryXiangtan UniversityXiangtan 411105HunanChina Institute of Micro/Nano Materials and Devices Ningbo University of TechnologyNingbo 315211ZhejiangChina

Single-crystalline Ni-rich cathodes can provide high energy density and capacity retention rates for lithium-ion batteries(LIBs).However,single-crystalline Ni-rich cathodes experience severe transition metal dissolution,irreversible phase transitions,and reduced structural stability during prolonged cycling at high voltage,which will significantly hinder their practical ***,a Li4TeO5surface coating along with bulk Te-gradient doping strategy is proposed and developed to solve these issues for single-crystalline Ni-rich LiNi_(0.90)Co_(0.05)Mn_(0.05)O_(2)cathode(LTeO-1.0).It has been found that the bulk Te^(6+)gradient doping can lead to the formation of robust Te-O bonds that effectively inhibit H_(2)-H3 phase transformations and reinforce the lattice framework,and the in-situ Li4TeO5coating layer can act as a protective layer that suppresses the parasitic reactions and grain ***,the modified material exhibits a higher Young's modulus,which will be conducive to maintaining significant structural and electrochemical stability under high-voltage conditions,Especially,the LTeO-1.0 electrode shows the improved Li^(+)diffusion kinetics and thermodynamic stability as well as high capacity retention of 95.83%and 82.12%after 200 cycles at the cut-off voltage of 4.3 and 4,5 ***,the efficacious dualmodification strategy will definitely contribute to enhancing the structural and electrochemical stability of single-crystalline Ni-rich cathodes and developing their application in LIBs.

关键词： Single-crystalline Ni-rich cathode High cut-off voltage Material fragmentation Li_(4)TeO_(5)coating layer Te^(6+)doping

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Dual-stage carbonization strategy for synthesizing biomass derived hard carbon with enhanced sodium-ion storage performances

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Journal of Industrial and engineering Chemistry 2025年 148卷 830-837页

作者： Tang, Yi Peng, Jiao Yang, Juan Liu, Peng He, Li Zhou, Kangjie Qiu, Wang Xie, Zheng Liu, Min Wang, Xianyou 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 Hunan Xiangtan411105 China College of New Energy Ningbo University of Technology Zhejiang Ningbo315336 China

Hard carbon has become one of the most prominent anode materials for sodium ion batteries (SIBs) owing to its cost-effective and high capacity. High-temperature carbonization is the most common method for synthesizing biomass-derived hard carbon, and optimizing the carbonization temperature is considered an effective strategy for improving initial Coulombic efficiency (ICE) and discharge specific capacity. However, it is challenging how to obtain hard carbon materials that simultaneously exhibit high ICE and high specific capacity. In this work, the initial carbonization temperature is slightly higher than the pyrolysis temperature, and then followed by high-temperature carbonization process. This method effectively both reduces the specific surface area and enhances structural order, which is conductive to achieving higher ICE and capacity. As a result, it exhibits a maximum ICE of 92 % and a reversible capacity of 308 mAh g−1 when current density is 30 mA g−1. Furthermore, it also presents excellent cycling performance and maintaining 91.5 % of its capacity subsequent to 500 cycles when the current density is 300 mA g−1. Therefore, this straightforward and cost-effective method provides a meaningful attempt for the synthesis of other biomass-derived hard carbon as anode materials of SIBs. © 2025 The Korean Society of Industrial and engineering Chemistry

关键词： Carbon capture and utilization

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Transition metal-based cathode catalysts for Li-CO2 batteries

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Journal of Energy Chemistry 2025年第05期104卷 225-253页

作者： Wenqing Ma Mingjuan Gao Jianping Ma Siyu Liu Lishan Yang Yahui Yang Xiangping Chen Tianzhen Jian Institute for Advanced Interdisciplinary Research (iAIR) Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong School of Chemistry and Chemical Engineering University of Jinan State Key Laboratory of Crystal Materials Shandong University Shandong Sacred Sun Power Sources Co.Ltd. Nano-Science Center & Department of Chemistry University of Copenhagen Key Laboratory of Chemical Biology & Traditional Chinese Medicine Research (Ministry of Education of China) National and Local Joint Engineering Laboratory for New Petrochemical Materials and Fine Utilization of Resources Key Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan Province Key Laboratory of Light Energy Conversion Materials of Hunan Province College Hunan Normal University Jinan Preschool Education College

The Li-CO2battery has been highly rated as an intriguing technique for balancing the carbon cycle for years, but it is still significantly challenged by the obstacles such as limited reversibility, sluggish kinetics,and poor energy efficiency. Hence, the design and development of advance catalysts that can enhance the kinetics and reversibility of the CO2electrochemical cycling reactions are considered the imperative tasks. Transition metal-based catalysts are widely considered appealing owing to their unfilled dorbitals, rich and adjustable valences, as well as processibility. In this review, the working mechanism and the key issues of the CO2electrochemical cycling reaction are discussed first. Then the strategies for composition and structure design of different type of transition metal-based catalysts are highlighted,including their benefits, limitations, and the ways to implement these strategies. Finally, based on the pioneering research, the perspectives on the challenges and key points for the future development of cathode catalyst are proposed.

关键词： Catalytic mechanism Cathode catalyst Li-CO2 battery Transition metal

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A terbium activated multicolour photoluminescent phosphor for luminescent anticounterfeiting

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Journal of Rare Earths 2020年第10期38卷 1039-1043,I0001页

作者： Jun Ma Yumiao Li Weishan Hu Wenxiang Wang Jiachi Zhang Jianhong Yang Yuhua Wang National&Local Joint Engineering Laboratory for Optical Conversion Materials and Technology Lanzhou UniversityLanzhou 730000China

The multicolor photoluminescence(PL) of a Tb3+singly activated NaYGeO4 phosphor is prepared by solid state *** the first time,it is reported that the PL color of Tb3+in NaYGeO4 phosphor can be tuned from green to blue and,finally,to red by controlling the Tb3+*** optimal tricolor phosphors are NaYGeO4:0.01 mol% Tb3+(red),NaYGeO4:0.5 mol% Tb3+(blue) and NaYGeO4:5 mol% Tb3+(green),*** PL properties of the NaYGeO4:Tb3+ phosphor were studied in *** results reveal that the PL color modulations of the NaYGeO4:Tb3+phosphor are essentially due to the cross-relaxation effect of Tb3+,and a possible mechanism on the cross-relaxation is *** to these unique features,a multicolor PL image was fabricated based on the NaYGeO4:Tb3+ phosphor for potential applications in luminescent anticounterfeiting.

关键词： Multicolour Luminescence Phosphor Rare earths

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Al-Cu-Li Co-doped P2-type Na0.5Mn0.95Ni0.05O2 microspheres as high-performance cathodes for sodium-ion batteries

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Journal of Energy Storage 2025年 125卷

作者： Ye, Zhongqiang Ren, Qiaochu Hu, Teli Huang, Zhifeng Hu, Hai Liu, Li 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 and Conversion School of Chemistry Xiangtan University Xiangtan411105 China

P2-type Na₀.₅Mn₀.₉₅Ni₀.₀₅O₂ (NMNO) is considered a promising candidate for use as a cathode material in sodium ion batteries because of its high theoretical specific capacity. However, it is limited by factors such as material conductivity, structural defects, and electrochemical reaction kinetics, resulting in a significant gap between the practical capacity and the theoretical value. Therefore, in this work, Al, Cu, and Li single-element doping, as well as Al-Cu-Li co-doping, were applied to NMNO via a solvothermal method to examine its impact on the crystal structure and electrochemical performance. The results demonstrate that the synergistic effect of Al-Cu-Li co-doping effectively facilitates Na+ insertion/extraction, enhances electronic conductivity, improves redox kinetics, mitigates electrode polarization, and suppresses the Jahn-Teller effect from Mn3+, thus significantly enhancing the specific capacity and cycling stability of the material. Within the voltage window of 2.0–4.0 V, AlCuLi-NMNO exhibits a specific capacity of 109.4 mAh g−1 after 100 cycles at 100 mA g−1, and maintains 75.5 mAh g−1 after 200 cycles at 1000 mA g−1, with capacity retention rates of 83.4 % and 90.5 %, respectively. Overall, this study presents a simple and efficient modification approach for improving the electrochemical performance of layered P2-type cathode materials used in sodium ion batteries. © 2025 Elsevier Ltd

关键词： Sodium-ion batteries

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Interface-driven D-band modulation for dual-function anchoring and catalytic conversion of polysulfides in lithium-sulfur batteries

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Journal of Energy Chemistry 2025年 107卷 919-928页

作者： Wenlong Xia Hengzhi Liu Hong Liu Qianqian Liang Lanhua Yi Manfang Chen Xianyou Wang Xingqiao Wu Hongbo Shu National Local Joint Engineering Laboratory for Key Materials of New Energy Storage Battery Hunan Province Key Laboratory for Electrochemical Energy Storage and Conversion School of Chemistry Xiangtan University Xiangtan Hunan 411105 China Department of Chemistry Southern University of Science and Technology Shenzhen Guangdong 518055 China College of Chemistry and Materials Engineering Wenzhou University Wenzhou Zhejiang 325035 China

The polysulfide shuttle effect critically hinders lithium-sulfur (Li S) battery development, therefore, the design of heterogeneous interface engineering with “adsorption-catalysis” functions for polysulfide conversion has garnered considerable attention. However, the exploration of the intricate relationship between key electronic properties and catalytic activity at such interfaces remains a challenge. Additionally, a comprehensive understanding of the thermodynamic growth mechanisms for heterostructure materials is lacking. Herein, a Ni-based homologous structure was precisely constructed via thermodynamic control, with a specific focus on optimizing the interface design. The theoretical results show that the heterostructures with adjustable composition realize the appropriate upward shift to the D-band, improving the affinity towards polysulfide, and further reducing the reaction energy barrier. On this basis, the relationship between interface design and the D-band center, as well as catalytic performance, was established. Specifically, M-Ni 3 Fe/Ni 3 ZnC 0.7 accomplishes the electron enrichment at the interface, supporting the further diffusion of polysulfides, and lowering the Li S bond energy, performing the bidirectional catalytic transformation of polysulfides. As a result, the Li S batteries with the cathode of M-Ni 3 Fe/Ni 3 ZnC 0.7 /S deliver rate performances of discharge capacity of 514 mA h g −1 at 5.0 C. This understanding of the D-band and interfacial design provides a framework for Li S catalyst optimization.

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Flexible three-dimensional integrated circuits (3D ICs) based on liquid metal

Wearable Electronics

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Wearable Electronics 2025年 2卷 1-17页

作者： Ruiwen Tian Jianhui Chen Ming Zhu Dianpeng Qi Xiaodong Chen MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage National and Local Joint Engineering Laboratory for Synthesis Transformation and Separation of Extreme Environmental Nutrients School of Chemistry and Chemical Engineering Harbin Institute of Technology Harbin 150001 PR China Innovative Center for Flexible Devices (iFLEX) Max Planck-NTU Joint Lab for Artificial Senses School of Materials Science and Engineering Nanyang Technological University 50 Nanyang Avenue Singapore 639798 Singapore Key Laboratory of Science and Engineering for the Multi-modal Prevention and Control of Major Chronic Diseases Ministry of Industry and Information Technology Zhengzhou Research Institute of Harbin Institute of Technology Zhengzhou 450000 PR China

The rapid advancement of flexible electronics has unlocked opportunities across diverse fields, including medical science and device engineering. Developing flexible three-dimensional integrated circuits (3D ICs) is a key strategy for driving the miniaturisation, wearability and multifunctionality of flexible devices. Among these innovations, liquid metal-based flexible electronics have elicited significant attention due to their exceptional conductivity, high stretchability and low toxicity. This review highlights recent research breakthroughs in the application of liquid metal for flexible 3D ICs, providing a detailed discussion of the design concepts and strategies for patterning and interconnection structures that harness the unique properties of liquid metal. Using 3D printing technology to fabricate high-resolution, durable 3D ICs from liquid metal represents a major research direction. Moreover, advanced fabrication methods diverging from conventional 3D printing systems are explored. Finally, we examine persistent challenges and offer a forward-looking perspective on the potential of liquid metal-based flexible 3D ICs to revolutionise human–machine interactions and enable intelligent living.

关键词： Liquid metal Gallium–indium alloy Flexible electronics Three-dimensional Integrated circuit 3D printing

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NiCo_(2)S_(4)/N microspheres grown on N,S co-doped reduced graphene oxide as an efficient bifunctional electrocatalyst for overall water splitting in alkaline and neutral pH

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Nano Research 2022年第2期15卷 950-958页

作者： Haoquan Li Long Chen Pengfei Jin Yafei Li Jianxiang Pang Juan Hou Shanglong Peng Gang Wang Yulin Shi Key Laboratory for Green Process of Chemical Engineering of Xinjiang Bingtuan School of Chemistry and Chemical EngineeringShihezi UniversityShihezi 832003China National&Local Joint Engineering Laboratory for Optical Conversion Materials and Technology School of Physical Science and TechnologyLanzhou UniversityLanzhou 730000China

It is of vital importance to design efficient and low-cost bifunctional catalysts for the electrochemical water splitting under alkaline and neutral pH *** this work,we report an efficient and stable NiCo_(2)S_(4)/N,S co-doped reduced graphene oxide(NCS/NS-rGO)electrocatalyst for water splitting,in which NCS microspheres are composed of one-dimentional(1D)nanorods grown homogeneously on the surface of NS-rGOs).The synergetic effect,abundant active sites,and hybridization of NCS/NS-rGO endow their outstanding electrocatalytic performance for hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)in both alkaline and neutral ***,NCS/NS-rGO employed as both anode and cathode in a two-electrode alkaline and neutral system electrolyzers deliver 10 mA/cm^(2) with the low cell voltage of 1.58 V in alkaline and 1.91 V in neutral *** results illustrate the rational design of carbon-supported nickel-cobalt based bifunctional materials for practical water splitting over a wide pH range.

关键词： wide pH range bifunctional electrocatalyst overall water splitting NiCo_(2)S_(4)/N Sco-doped reduced graphene oxide(NCS/NS-rGO)

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Electrical stimulation for brighter persistent luminescence

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Light(Science & Applications) 2024年第8期13卷 1590-1601页

作者： Xilin Ma Yuhua Wang Takatoshi Seto Key Laboratory for Special Function Materials and Structural Design of the Ministry of Education National&Local Joint Engineering Laboratory for Optical Conversion Materials and Technology of National Development and Reform CommissionDepartment of Materials ScienceSchool of Materials and EnergyLanzhou UniversityNo.222South Tianshui RoadLanzhouGansu 730000China

An immature understanding of the mechanisms of persistent luminescence(PersL)has hindered the development of new persistent luminescent materials(PersLMs)with increased *** this regard,in-situ direct current(DC)electric field measurements were conducted on a layered structure composed of the SrAl_(2)O_(4):Eu^(2+),Dy^(3+)phosphor,and an *** this study,the photoluminescence(PL)and afterglow properties were investigated with respect to voltage by analyzing the current signal and thermoluminescence(TL)*** intensity of PersL increased due to a novel phenomenon known as“external electric field stimulated enhancement of initial brightness of afterglow”.This dynamic process was illustrated via the use of a rate equation approach,where the electrons trapped by the ultra-shallow trap at 0.022 eV could be transferred through the conduction band during long *** afterglow intensity could reach 0.538 cdm^(-2)at a 6 V electric *** design of an electric field stimulation technique enables the enhancement of the intensity of PersLMs and provides a new perspective for exploring the fundamental mechanics of certain established PersLMs.

关键词： spectroscopy luminescence conduction

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