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Interfacial built-in electric field and crosslinking pathways enabling WS_(2)/Ti_(3)C_(2)T_(x) heterojunction with robust sodium storage at low temperature

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Journal of Energy Chemistry 2024年第2期89卷 635-645,I0014页

作者： Jiabao Li Shaocong Tang Jingjing Hao Quan Yuan Tianyi Wang Likun Pan Jinliang Li Shenbo Yang Chengyin Wang College of Chemistry and Chemical Engineering Yangzhou UniversityYangzhou 225002JiangsuChina Shanghai Key laboratory of Magnetic Resonance School of Physics and Electronic Science East China Normal UniversityShanghai 200241China siyuan laboratory Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy MaterialsGuangdong Provincial Key Laboratory of Nanophotonic ManipulationDepartment of PhysicsJinan UniversityGuangzhou 510632GuangdongChina Hongzhiwei Technology(Shanghai)CO.LTD Shanghai 200241China

Developing efficient energy storage for sodium-ion batteries(SIBs)by creating high-performance heterojunctions and understanding their interfacial interaction at the atomic/molecular level holds promise but is also challenging.Besides,sluggish reaction kinetics at low temperatures restrict the operation of SIBs in cold climates.Herein,cross-linking nanoarchitectonics of WS_(2)/Ti_(3)C_(2)T_(x) heterojunction,featuring built-in electric field(BIEF),have been developed,employing as a model to reveal the positive effect of heterojunction design and BIEF for modifying the reaction kinetics and electrochemical activity.Particularly,the theoretical analysis manifests the discrepancy in work functions leads to the electronic flow from the electron-rich Ti_(3)C_(2)T_(x) to layered WS_(2),spontaneously forming the BIEF and“ion reservoir”at the heterogeneous interface.Besides,the generation of cross-linking pathways further promotes the transportation of electrons/ions,which guarantees rapid diffusion kinetics and excellent structure coupling.Consequently,superior sodium storage performance is obtained for the WS_(2)/Ti_(3)C_(2)T_(x) heterojunction,with only 0.2%decay per cycle at 5.0 A g^(-1)(25℃)up to 1000 cycles and a high capacity of 293.5 mA h g^(-1)(0.1A g^(-1)after 100 cycles)even at-20℃.Importantly,the spontaneously formed BIEF,accompanied by“ion reservoir”,in heterojunction provides deep understandings of the correlation between structure fabricated and performance obtained.

关键词： WS_(2)/Ti_(3)C_(2)T_(x)heterojunction Built-in electric field Ion reservoir Reaction kinetics Sodium storage performance at low temperature

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Structure and defect dual-engineering of cobalt oxides for lowtemperature Zn-air batteries

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Nano Research 2024年第5期17卷 4108-4117页

作者： Hang Lei Zhuowen Huangfu Liangjun Chen Xuelin Yang Zilong Wang Wenjie Mai Hubei Provincial Collaborative Innovation Center for New Energy Microgrid College of Electrical Engineering&New EnergyChina Three Gorges UniversityYichang 443002China siyuan laboratory Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy MaterialsDepartment of PhysicsJinan UniversityGuangzhou 510632China

The exploration of bifunctional electrocatalysts with high catalytic activity and long-term durability for low-temperature Zn-air batteries(ZABs)is an ongoing challenge.Here,quintet-shelled hollow spheres,P-doped multi-layer Co_(3)O_(4)(PM-Co_(3)O_(4)),with enriched oxygen vacancies are prepared by thermally induced mass relocation and a simple phosphating process.Various advanced characterizations reveal P anion-induced effects on internal electronic structure and local coordination environment.The finite element method elucidates that the complex multi-layer spherical nanostructure is conducive to the transport and diffusion of OH-and O_(2).Benefiting from its unique structural features and abundant oxygen vacancies,the well-designed PM-Co_(3)O_(4) presents small reversible oxygen overpotential for catalyzing oxygen reduction/evolution reactions.Accordingly,the fabricated low-temperature ZABs based on PM-Co_(3)O_(4) as air-cathode exhibit high power density(20.8 mW·cm^(-2))and long-term stability(over 600 cycles)at the ultra-low temperature of-40℃,outperforming state-of-art Pt/C+IrO_(2)-based ZABs.Furthermore,the dynamic evolution mechanism of cobalt oxide catalysts during ZAB operation is elucidated.This work provides a guideline to design efficient electrocatalysts with regulated electronic configurations and exquisite nano-/microstructures for ZABs under extreme working conditions.

关键词： Zn-air batteries electrocatalysts low temperature hollow spheres oxygen vacancies

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Fabrication of patterned transparent conductive glass via laser metal transfer for efficient electrical heating and antibacteria

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Nano Research 2024年第3期17卷 1578-1584页

作者： Xiaoyan Liu Ting Zhang Mengchen Xu Yang Li Haiqing Wang Yuke Chen Xuzihan Zhang Zenan Wang Xiaoyan Li Weijia Zhou Hong Liu Institute for Advanced Interdisciplinary Research(iAIR) School of Chemistry and Chemical EngineeringUniversity of JinanJinan 250022China School of physics and Technology University of JinanJinan 250024China department of Endodontics School and Hospital of StomatologyCheeloo College of MedicineShandong University&Shandong Key Laboratory of Oral Tissue Regeneration&Shandong Engineering Laboratory for Dental Materials and Oral Tissue RegenerationJinan 250012China School of Information Science and Engineering University of JinanJinan 250022China Shenzhen Institute of Advanced Technology Chinese Academy of SciencesShenzhen 518055China

Vapor deposition and three-dimensional(3D)printing technology are considered to be conventional methods to achieve patterned metal film preparation through the assistance of masks and high temperature.Therefore,there are still some challenges in fabricating metal films in template-free and normal temperature environment.In this work,we report a flexible and rapid laser metal transfer(LMT)technique for fabricating the various metal films(Cu,Ni,Sn,Al,Fe,and Ag)with different patterns without templates on arbitrary substrates(glass,polyimide(PI)films,and aluminum nitride(AlN)ceramic).Especially,the obtained transparent conductive glass displays high transmittance(more than 90%)and adjustable resistances(≈5Ω).According to the Joule effect,the interface resistance between Cu particles and copper oxide coating produces the high temperature approximately 280℃ at 2 V in a short time(≈60 s)and remains stable at 120℃ over 12 h.At last,the multifunctional glass with Cu patterns also shows excellent bactericidal activity(≈95%).This work demonstrates that laser metal transfer is an exceeding effective means of fabricating the micro/nano structures with potential applications in functional devices.

关键词： laser metal transfer(LMT) transparent conductive glass electrical heating copper pattern antibacterial

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Enhancing hydrogen evolution and oxidation kinetics through oxygen insertion into nickel lattice

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Journal of Energy Chemistry 2024年第8期95卷 529-539页

作者： Wanli Liang Xiyu Gong Jinchang Xu Zixuan Dan Fanyan Xie Hulei Yu Hao-Fan Wang Yanshuo Jin Hongjuan Wang Yonghai Cao Hui Meng Hao Yu School of Chemistry and Chemical Engineering South China University of Technology siyuan laboratory Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy Materials Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials Guangdong Provincial Key Laboratory of Optical Fiber Sensing and Communications Department of Physics Jinan University GBA Branch of Aerospace Information Research Institute Chinese Academy of Sciences Instrumental Analysis & Research Center Sun Yat-sen University School of Materials Science and Engineering South China University of Technology

Nickel-based materials,including metallic Ni and Ni oxide,have been widely studied in the exploration of non-precious-metal hydrogen electrocatalysts,but neither pure Ni nor NiO is ideal for the hydrogen evolution reaction（HER） and hydrogen oxidation reaction（HOR）.In this paper,an oxygen insertion strategy was applied on nickel to regulate its hydrogen electrocatalytic performance,and the oxygen-inserted nickel catalyst was successfully obtained with the assistance of tungsten dioxide support（denoted as O-Ni/WO2）.The partial insertion of oxygen in Ni maintains the face-centered cubic arrangement of Ni atoms,simultaneously expanding the lattice and increasing the lattice spacing.Consequently,the adsorption strength of*H and*OH on Ni is optimized,thus resulting in superior electrocatalytic performance of0-Ni/WO2in alkaline HER/HOR.The Tafel slope of O-Ni/WO2@NF for HER is 56 mV dec-1,and the kinetic current density of O-Ni/WO2for HOR reaches 4.85 mA cm-2,which is ahead of most currently reported catalysts.Our proposed strategy of inserting an appropriate amount of anions into the metal lattice could provide more possibilities for the design of high-performance catalysts.

关键词： Adsorption free energy Hydrogen evolution Hydrogen oxidation Nickel Oxygen insertion

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Sequestration of helium and xenon via iron-halide compounds in early Earth

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Matter and Radiation at Extremes 2024年第3期9卷 83-88页

作者： Jurong Zhang Hanyu Liu Changfeng Chen Yanming Ma Key laboratory of Material Simulation Methods and Software of Ministry of Education and State Key laboratory of Superhard Materials College of PhysicsJilin UniversityChangchun 130012China School of physics and Electronics Shandong Normal UniversityJinan 250014China International Center of Future Science Jilin UniversityChangchun 130012China department of physics and Astronomy University of NevadaLas VegasNevada 89154USA

The terrestrial abundance anomalies of helium and xenon suggest the presence of deep-Earth reservoirs of these elements,which has led to great interest in searching for materials that can host these usually unreactive elements.Here,using an advanced crystal structure search approach in conjunction with first-principles calculations,we show that several Xe/He-bearing iron halides are thermodynamically stable in a broad region of P–T phase space below 60 GPa.Our results present a compelling case for sequestration of He and Xe in the early Earth and may suggest their much wider distribution in the present Earth than previously believed.These findings offer insights into key material-based and physical mechanisms for elucidating major geological phenomena.

关键词： halide searching insight

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Long-term functional maintenance of primary hepatocytes in vitro using macroporous hydrogels engineered through liquid-liquid phase separation

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Nano Research 2024年第3期17卷 1725-1736页

作者： Yang Sun Sheng Yin Jian Cui Zhongxia Wang Yueying Han Ding Ma Shuo Wang Junhua Wu Yi Cao Chunping Jiang Xiaosong Gu jinan Microecological Biomedicine Shandong laboratory Jinan 250021China Collaborative Innovation Center of Advanced Microstructures National Laboratory of Solid State MicrostructureKey Laboratory of Intelligent Optical Sensing and ManipulationMinistry of EducationDepartment of PhysicsNanjing UniversityNanjing 210093China department of Hepatobiliary Surgery The Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjing 210093China National Institute of Healthcare Data Science at Nanjing university Nanjing UniversityNanjing 210093China

Preserving the functionality of hepatocytes in vitro poses a significant challenge in liver tissue engineering and bioartificial liver,as these cells rapidly lose their metabolic and functional characteristics after isolation.Inspired by the macroporous structures found in native liver tissues,here we develop synthetic hydrogel scaffolds that closely mimic the liver’s structural organization through the phase separation between polyethylene glycol(PEG)and polysaccharides.Our hydrogels exhibit interconnected macroporous structures and appropriate mechanical properties,providing an optimal microenvironment conducive to hepatocyte adhesion and the formation of sizable aggregates.Compared to two-dimensional hepatocyte cultures,enhanced functionalities of hepatocytes cultured in our macroporous hydrogels were observed for 14 days,as evidenced by quantitative reverse-transcription–polymerase chain reactions(qRT-PCR),immunofluorescence,and enzyme linked immunosorbent assay(ELISA)analyses.Protein sequencing data further confirmed the establishment of cell–cell interactions among hepatocytes when cultured in our hydrogels.Notably,these hepatocytes maintained a protein expression lineage that closely resembled freshly isolated hepatocytes,particularly in the Notch and tumor necrosis factor(TNF)signaling pathways.These results suggest that the macroporous hydrogels are attractive scaffolds for liver tissue engineering.

关键词： liver tissue engineering phase separation hepatocytes macroporous hydrogel

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Mitigating Lattice Distortion of High‑Voltage LiCoO_(2)via Core‑Shell Structure Induced by Cationic Heterogeneous Co‑Doping for Lithium‑Ion Batteries

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Nano-Micro Letters 2024年第3期16卷 169-182页

作者： Zezhou Lin Ke Fan Tiancheng Liu Zhihang Xu Gao Chen Honglei Zhang Hao Li Xuyun Guo Xi Zhang Ye Zhu Peiyu Hou Haitao Huang department of Applied physics and Research Institute for Smart Energy The Hong Kong Polytechnic UniversityHong KongPeople’s Republic of China department of Applied physics The Hong Kong Polytechnic UniversityHong KongPeople’s Republic of China Institute of Nanosurface Science and Engineering Guangdong Provincial Key Laboratory of Micro/Nano Optomechatronics EngineeringShenzhen UniversityShenzhenPeople’s Republic of China School of physics and Technology University of JinanJinanShandongPeople’s Republic of China

Inactive elemental doping is commonly used to improve the structural stability of high-voltage layered transition-metal oxide cathodes.However,the one-step co-doping strategy usually results in small grain size since the low diffusivity ions such as Ti^(4+)will be concentrated on grain boundaries,which hinders the grain growth.In order to synthesize large single-crystal layered oxide cathodes,considering the different diffusivities of different dopant ions,we propose a simple two-step multi-element co-doping strategy to fabricate core–shell structured LiCoO_(2)(CS-LCO).In the current work,the high-diffusivity Al^(3+)/Mg^(2+)ions occupy the core of single-crystal grain while the low diffusivity Ti^(4+)ions enrich the shell layer.The Ti^(4+)-enriched shell layer(~12 nm)with Co/Ti substitution and stronger Ti–O bond gives rise to less oxygen ligand holes.In-situ XRD demonstrates the constrained contraction of c-axis lattice parameter and mitigated structural distortion.Under a high upper cut-off voltage of 4.6 V,the single-crystal CS-LCO maintains a reversible capacity of 159.8 mAh g^(−1)with a good retention of~89%after 300 cycles,and reaches a high specific capacity of 163.8 mAh g^(−1)at 5C.The proposed strategy can be extended to other pairs of low-(Zr^(4+),Ta^(5+),and W6+,etc.)and high-diffusivity cations(Zn^(2+),Ni^(2+),and Fe^(3+),etc.)for rational design of advanced layered oxide core–shell structured cathodes for lithium-ion batteries.

关键词： Lithium-ion battery LiCoO_(2) Heterogeneous co-doping Core-shell structure High-voltage stability

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Type I critical dynamical scalarization and descalarization in Einstein-Maxwell-scalar theory

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Science China(physics,Mechanics & Astronomy) 2024年

作者： Jia-Yan Jiang Qian Chen Yunqi Liu Yu Tian Wei Xiong Cheng-Yong Zhang Bin Wang Center for Gravitation and Cosmology College of Physical Science and Technology Yangzhou University department of physics and siyuan laboratory Jinan University School of Physical Sciences University of Chinese Academy of Sciences Institute of Theoretical physics Chinese Academy of Sciences School of physics and Optoelectronics South China University of Technology School of Aeronautics and Astronautics Shanghai Jiao Tong University

We investigated the critical dynamical scalarization and descalarization of black holes within the framework of the EinsteinMaxwell-scalar theory featuring higher-order coupling functions. Both the critical scalarization and descalarization displayed first-order phase transitions. When examining the nonlinear dynamics near the threshold, we always observed critical solutions that are linearly unstable static scalarized black holes. The critical dynamical scalarization and descalarization share certain similarities with the type I critical gravitational collapse. However, their initial configurations, critical solutions, and final outcomes differ significantly. To provide further insights into the dynamical results, we conducted a comparative analysis involving static solutions and perturbative analysis.

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Liquid Crystal Based Label-Free Optical Sensors forBiochemical Application

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Photonic Sensors 2024年第2期14卷 57-88页

作者： Jieyuan TANG Zhibin LI Mengyuan XIE Yunhan LUO Jianhui YU Guojie CHEN Zhe CHEN School of physics and Optoelectronic Engineering Foshan UniversityFoshan 528225China Guangdong-Hong Kong.Macao Joint laboratory for Intelligent Micro-Nano Optoelectronic Technology Foshan UniversiyFoshan 528225China Key laboratory of Optoelectronic Information and Sensing Technologies of Guangdong Higher Education Institutes Jinan UniversityGuangzhou 510632.China department of Optoelectronic Engineering Jinan UniversityGuangzhou 510632China JiHua laboratory Foshan 528200China

Biochemical sensors have important applications in biology,chemistry,and medicine.Nevertheless,many biochemical sensors are hampered by intricate techniques,cumbersome procedures,and the need for labeling.In the past two decades,it has been discovered that liquid crystals can be used to achieve the optical amplification of biological interactions.By modifying recognition molecules,a variety of label-free biochemical sensors can be created.Consequently,biochemical sensors based on the amplification of liquid crystals have become one of the most promising sensors.This paper describes in detail the optical sensing principle of liquid crystals,sensing devices,and optical detection technologies.Meanwhile,the latest research findings are elucidated.Finally,the challenges and future research directions are discussed.

关键词： Optical sensor biochemistry liquid crystal label-free

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Universal paradigm of ternary metacomposites with tunable epsilon-negative and epsilon-near-zero response for perfect electromagnetic shielding

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Rare Metals 2024年第2期43卷 796-809页

作者： Yun-Peng Qu Yun-Lei Zhou Yang Luo Yao Liu Jun-Fei Ding Yan-Li Chen Xiu Gong Jing-Liang Yang Qiong Peng Xiao-Si Qi College of physics Guizhou UniversityGuiyang550025China Hangzhou Institute of Technology Xidian UniversityHangzhou311231China department of Materials ETH Zurich8093ZurichSwitzerland Key laboratory for Liquid-Solid Structural Evolution and Processing of Materials(Ministry of Education) Shandong UniversityJinan250061China

CaCu_(3)Ti_(4)O_(12)(CCTO)ceramic nanocomposites incorporating graphene–carbon black(GRCB)fillers were fabricated by spark plasma sintering process.The percolative effects of conductive GRCB fillers on dielectric response of GRCB/CCTO ternary metacomposites were systematically investigated.The weakly real permittivity(ε′)-negative response(ε′~−1×10^(2))was achieved which originated from weakly low-frequency plasmonic state of free carriers within constructed GRCB networks.With enhancing three-dimensional GRCB network,the plasma frequency of metacomposites increased while the damping factor decreased.Herein,theε′-negative values of metacomposites were tuned from−10^(2) to−10^(4) orders of magnitude andε′-near-zero(ENZ)frequencies from~142 to~340 MHz which substantially benefited from the moderate carrier concentration of GRCB dual fillers.The Drude model and equivalent circuit models were adopted to demonstrate dielectric and electrical characteristics.The obtained metacomposites show strong EM shielding effect along with enhanced plasmonic oscillation and even better achieving perfect EM shielding effect in ENZ media.This work achieves the tunableε′-negative andε′-near-zero response and more importantly clarifies its regulation mechanism in ceramic-based ternary metacomposites,which opens up the possibility of designing high-performance EM shielding materials based on metacomposites.

关键词： Metacomposites Ceramic matrix composites Negative permittivity Epsilon-near-zero Electromagnetic shielding

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