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Journal of Materials Science & Technology 2023年第33期164卷 140-149页

作者： Na Liang Zixu Yin Jingyun Guo Wanying Fang Qi Wang Ge Tian Dong Zhang Huijuan Yue Shouhua Feng State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012China Key Laboratory of Physics and Technology for Advanced Batteries (Ministry of Education) College of PhysicsJilin UniversityChangchun 130012China

Exploring new strategies to incorporate the concepts of green chemistry and defect engineering into new architectures to address the problem of severe electromagnetic wave(EMW)pollution is challenging.In this work,by using a by-product of catalytic conversion of biomass as a carbon source,we prepare two-dimensional(2D)Co_(9)S_(8)-coated humins-derived carbon nanomaterials with a yolk-shell structure.The EMW attenuation ability is finally optimized by controlling the morphology and defects of the composite material through the pyrolysis temperature.As expected,with the synergy of conductive loss/interfacial polarization and defects regulating,the composite material achieves a reflection loss(RL)value of−51.4 dB in Ku-band and the effective absorption bandwidth(EAB)can be as high as 5.92 GHz(12.08–18.00 GHz)at 1.8 mm ultra-thin coating thickness.A strong absorption capacity in the low-frequency C-band(6.4 GHz)reaches RL value of−49.9 dB and a thickness of 3.50 mm,which grants it the characteristic of convertible microwave absorption from high frequency to low frequency.Taking account of the facile synthesis and tunable absorption properties,the encouraging findings shed light on exploring waste-turned-microwave absorbents with promising practical applications.

关键词： yolk-shell structure Electromagnetic wave absorption Sulfide Humins

Self-template formation of porous yolk-shell structure Mo-doped NiCo2O4 toward enhanced lithium storage performance as anode material

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Journal of Materials Science & Technology 2022年第7期102卷 186-194页

作者： Yongqiang Ren Xiuyan Li Yinan Wang Qinghua Gong Shaonan Gu Tingting Gao Xuefeng Sun Guowei Zhou Key Laboratory of Fine Chemicals in Universities of Shandong Jinan Engineering Laboratory for Multi-scale Functional MaterialsSchool of Chemistry and Chemical EngineeringQilu University of Technology(Shandong Academy of Sciences)Jinan 250353China School of Chemical Engineering and Environment Shandong Peninsula Engineering Research Center of Comprehensive Brine UtilizationWeifang University of Science and TechnologyWeifang 262700China

Hollow ternary metal oxides have shown enormous potential in lithium-ion batteries(LIBs),which is ascribed to their complex chemical composition,abundant active defect sites,and the synergy effect be-tween metals.In this work,we synthesized Mo-doped NiCo_(2)O_(4) porous spheres with yolk-shell structure by using a simple self-templating method.Surprisingly,other than the yolk-shell structure we had ob-tained,the inner core of the yolk-shell was also porous,which could fully enhance the electrolyte infil-tration and promote the transmission of lithium ions(Li+)and electrons(e−).The diameter of the porous core in the yolk-shell sphere was about 530 nm,and the outer shell’s thickness was up to 110 nm.In addition,the unique pores in the core appeared in the diameter of about 85 nm.With this structure,the volume expansion of the anode could be well inhibited during charge/discharge.It exhibited prominent electrochemical performance with high reversible capacity(1338 mA h g^(−1) at 100 mA g^(−1)),satisfactory cycle life(1360 mA h g^(−1) after 200 cycles at 100 mA g^(−1)),and exceptional rate capability(820 mA h g^(−1) at 2000 mA g^(−1))as anode material in LIBs.

关键词： Ternary metal oxides yolk-shell structure Porous inner core Anode material Lithium-ion batteries

Mitigating the dissolution of V_(2)O_(5) in aqueous ZnSO_(4) electrolyte through Ti-doping for zinc storage

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Chinese Chemical Letters 2024年第1期35卷 558-562页

作者： Zihe Wei Xuehua Wang Ting Zhu Ping Hu Liqiang Mai Liang Zhou Hubei Longzhong Laboratory Wuhan University of Technology(Xiangyang Demonstration Zone)Xiangyang 441000China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Wuhan Institute of TechnologyWuhan 430205China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshan 528200China

Aqueous zinc-ion batteries(AZIBs)have become a hotspot for electrochemical energy storage owing to the high safety,low cost,environmental friendliness,and favorable rate performance.However,the serious dissolution of cathode materials in aqueous electrolytes would lead to poor cyclability,which should be addressed before commercialization.Herein,we designed a Ti-doped V_(2)O_(5) with yolk-shell microspherical structure for AZIBs.The Ti doping stabilizes the crystal structure and relieves the dissolution of V_(2)O_(5) in aqueous ZnSO_(4) electrolyte.The optimized sample,Ti_(0.2)V_(1.8)O_(4.9),delivers a high capacity(355 mAh/g at 0.05 A/g)as well as good capacity retention(89%after 2500 cycles at 1.0 A/g).This work provides an effective strategy to mitigate the dissolution of cathode material in aqueous ZnSO_(4) electrolyte for cyclability enhancement.

关键词： Aqueous zinc-ion batteries V_(2)O_(5)cathode materials Aqueous ZnSO_(4)electrolyte yolk-shell structure Ti doping

Hierarchical yolk-shell structured Li-rich cathode boosting cycling and voltage stabled LIBs

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Nano Research 2022年第4期15卷 3178-3186页

作者： Yanchen Liu Yafen Chen Jing Wang Wei Wang Zhiyu Ding Leyuan Li Yang Zhang Yida Deng JunweiWu Yanan Chen Shenzhen Key Laboratory of Advanced Materials Department of Materials Science and EngineeringHarbin Institute of Technology(Shenzhen)Shenzhen 518055China School of Materials Science and Engineering Key Laboratory of Advanced Ceramics and Machining Technology of Ministry of EducationTianjin Key Laboratory of Composite and Functional MaterialsTianjin UniversityTianjin 300072China School of Materials Science and Engineering Hainan UniversityHaikou 570228China

Despite the high energy density of lithium-rich(Li-rich)cathodes,their implementation is hampered by the unsatisfied rate capacity and poor cycling performance accompanied with substantial voltage decay.To address these issues,the hierarchical yolk-shell structured Li_(1.2)Mn_(0.54)Ni_(0.13)Co_(0.13)O_(2)cathodes(YK-LMNCO)was proposed and synthesized through a facile glycerol assisted solvothermal approach and the following lithiation process.Benefitting from the shortened lithium diffusion lengths and the enhanced tolerance to the large volume variation upon lithium ions intercalation/de-intercalation,the unique structure reciprocates an initial coulombic efficiency of 85.8%,an outstanding capacity retention rate of 89.1%after cycling at 2.0 C for 200 cycles with a minor voltage drop,and a capacity retention rate of 93.8%after cycling at 10.0 C for 500 cycles,85.2%for 1,000 cycles.When assembled with graphite as anode,the YK-LMNCO//graphite full cell shows a remarkable capacity retention rate of 87.2%after cycling at 5.0 C for 50 cycles.Our facile strategy for constructing the yolk-shell structured Li-rich cathodes with high capacity and voltage stability sheds light on synthesizing other lithium storage materials.

关键词： lithium-rich(Li-rich)layered oxides yolk-shell structure cathode cycling stability lithium-ion battery(LIBs)

Magnetic-dielectric synergy and interfacial engineering to design yolk-shell structured CoNi@void@C and CoNi@void@C@MoS_(2) nanocomposites with tunable and strong wideband microwave absorption

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Nano Research 2022年第7期15卷 6761-6771页

作者： Chen Li Xiaosi Qi Xiu Gong Qiong Peng Yanli Chen Ren Xie Wei Zhong College of Physics Guizhou Province Key Laboratory for Photoelectrics Technology and ApplicationGuizhou UniversityGuiyang 550025China National Laboratory of Solid State Microstructures and Jiangsu Provincial Laboratory for NanoTechnology Nanjing UniversityNanjing 210093China

In order to effectively utilize the magnetic-dielectric synergy and interfacial engineering,in this paper,yolk–shell structured magnetic multicomponent nanocomposites(MCNCs)including CoNi@void@C and CoNi@void@C@MoS_(2) were produced in large scale by in-situ pyrolysis of cubic CoNi Prussian blue analogs(PBAs)followed by the hydrothermal process,respectively.Because of their unique structures,excellent synergistic effect between dielectric and magnetic loss,the as-prepared CoNi@void@C and CoNi@void@C@MoS_(2) MCNCs displayed very outstanding electromagnetic wave absorption performances(EMWAPs)including strong absorption capabilities,broad absorption bandwidth and thin matching thicknesses.Furthermore,the as-prepared CoNi@void@C and CoNi@void@C@MoS_(2) MCNCs well maintained the cubic configuration of CoNi PBAs even after the thermal treatment and hydrothermal processes.The unique structure and formed carbon layers effectively prevented the corrosion of internal CoNi alloy during the formation of MoS_(2),and CoNi@void@C@MoS_(2) MCNCs with different MoS_(2) contents could be synthesized by controlling the hydrothermal temperature.The obtained results revealed that the EM parameters,dielectric and magnetic loss capabilities of CoNi@void@C@MoS_(2) MCNCs could be tuned by controlling hydrothermal temperature and filler loading,which made their outstanding EMWAPs could be achieved in different frequency regions.Taking account of simple process,low density and high chemical stability,our findings provided a new and effective pathway to develop the strong wideband microwave absorbers.

关键词： yolk-shell structure CoNi@void@C CoNi@void@C@MoS_(2) interface polarization strong wideband microwave absorbers

Synthesis of yolk-shell Bi_(2)O_(3)@TiO_(2) submicrospheres with enhanced potassium storage

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Science China Chemistry 2022年第9期65卷 1807-1816页

作者： Yifan Xu Hehe Zhang Tangjing Ding Ruiqi Tian Dongmei Sun Ming-Sheng Wang Xiaosi Zhou Jiangsu Key Laboratory of New Power Batteries Jiangsu Collaborative Innovation Center of Biomedical Functional MaterialsSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjing 210023China State Key Lab of Physical Chemistry of Solid Surfaces College of MaterialsXiamen UniversityXiamen 361005China

Due to their enormous potential for large-scale energy storage,rechargeable potassium-ion batteries have been widely researched and developed.However,the drastic volume change of electrode materials induced by the huge size of potassium ions during cycling remains a challenge for the construction of stable anodes.Herein,we propose a novel weak acid etching strategy to design and fabricate robust yolk-shell spheres with enough internal void space,in which the Bi_(2)O_(3) nanospheres are well confined in the compartments of TiO_(2) submicrospheres(y-Bi_(2)O_(3)@TiO_(2)).In situ transmission electron microscopy(TEM)and ex situ Xray diffraction(XRD)are conducted to elucidate the structural evolution of y-Bi_(2)O_(3)@TiO_(2) and the interaction between K^(+)and Bi_(2)O_(3) during cycling.Thanks to the yolk-shell nanoarchitecture and the superior buffering property of outer TiO_(2) covering,the as-obtained composite shows a high specific capacity of 383.5 mAh g^(−1) at 100 mA g^(−1),a considerable rate capacity of 134.1 mAh g^(−1) at 2 A g^(−1) and a stable cycling performance of 216.8 mAh g^(−1) at 500 mA g^(−1) over 500 cycles when used for potassium storage.Subsequently,the potassium-ion full battery,constructed by pairing y-Bi_(2)O_(3)@TiO_(2) anode with the thermally annealed 3,4,9,10-perylenetetracarboxylic dianhydride(PTCDA)cathode,exhibits an outstanding cycling stability.Hopefully,this carefully-designed strategy can inspire the further development of superior energy storage materials in the near future.

关键词： Bi_(2)O_(3) amorphous TiO_(2) yolk-shell structure anode potassium-ion batteries

Achieving high-capacity and long-life K^(+)storage enabled by constructing yolk-shell Sb_(2)S_(3)@N,S-doped carbon nanorod anodes

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Journal of Energy Chemistry 2023年第1期76卷 547-556,I0014页

作者： Bensheng Xiao Hehe Zhang Zhefei Sun Miao Li Yingzhu Fan Haichen Lin Haodong Liu Bing Jiang Yanbin Shen Ming-Sheng Wang Meicheng Li Qiaobao Zhang Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005FujianChina Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials(Xiamen University) Xiamen 361005FujianChina Department of Nanoengineering University of California San DiegoLa JollaCA92093United States State Key Laboratory of Altermate Electrical Power System with Renewable Energy Sources Schoolof New EnergyNorth China Electric Power UniversityBeijing 102206China i-Lab CAS Center for Excellence in NanoscienceSuzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of SciencesSuzhou 215123JiangsuChina

As promising anode candidates for potassium-ion batteries(PIBs),antimony sulfide(Sb_(2)S_(3))possesses high specific capacity but suffers from massive volume expansion and sluggish kinetics due to the large K^(+)insertion,resulting in inferior cycling and rate performance.To address these challenges,a yolk-shell structured Sb_(2)S_(3)confined in N,S co-doped hollow carbon nanorod(YS-Sb_(2)S_(3)@NSC)working as a viable anode for PIBs is proposed.As directly verified by in situ transmission electron microscopy(TEM),the buffer space between the Sb_(2)S_(3)core and thin carbon shell can effectively accommodate the large expansion stress of Sb_(2)S_(3)without cracking the shell and the carbon shell can accelerate electron transport and K^(+)diffusion,which plays a significant role in reinforcing the structural stability and facilitating charge transfer.As a result,the YS-Sb_(2)S_(3)@NSC electrode delivers a high reversible K^(+)storage capacity of 594.58 m A h g^(-1)at 0.1 A g^(-1)and a long cycle life with a slight capacity degradation(0.01%per cycle)for 2000 cycles at 1 A g^(-1)while maintaining outstanding rate capability.Importantly,utilizing in in situ/ex situ microscopic and spectroscopic characterizations,the origins of performance enhancement and K^(+)storage mechanism of Sb_(2)S_(3)were clearly elucidated.This work provides valuable insights into the rational design of high-performance and durable transition metal sulfides-based anodes for PIBs.

关键词： Antimony sulfide yolk-shell structure In situ TEM Potassium-ion batteries Super-stable cyclability

Boosting Stable and Fast Potassium Storage of Iron Sulfide through Rational yolk-shell Design and Ni Doping

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Chinese Journal of Structural Chemistry 2022年第5期41卷 30-36页

作者： Yanmei Gan Jiajie Zhu Qixin Zhang Chaoying Wang Lunhui Guan Yi Zhao College of Chemistry Fuzhou UniversityFuzhou 350108China The Straits Institute of Flexible Electronics(SIFE Future Technologies)Fujian Normal UniversityFuzhou 350117China CAS Key Laboratory of Design and Assembly of Functional Nanostructures Fujian Key Laboratory of NanomaterialsFujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350108China School of Physics Science and Engineering Tongji UniversityShanghai 200092China

Metal sulfides have been regarded as promising anodes for potassium-ion batteries(PIBs)due to their high theoretical capacities,while the performance is limited by their intrinsic poor conductivity and large volume fluctuation during the insertion/extraction of large potassium ion.Herein,the battery performance of iron sulfide anode is significantly enhanced through yolk-shell(Y-S)structure design and nickel doping,aiming to realize good structure stability and superior electron/ion transportation.For potassium storage,as-prepared Y-S Ni-FeS_(2)@C shows excellent cyclic performance and sustains high capacities of 328 mA h g^(-1)after 100 cycles at 0.2 A g^(-1)and 226 mA h g^(-1)after 1000 cycles at 1 A g^(-1).Especially,it displays a superior rate capacity of 200 mA h g^(-1)at 20 A g^(-1),higher than that of Y-S FeS_(2)@C and most as-reported metal sulfide anodes for PIBs.The experimental analysis and theoretical calculation illuminate the effect of Ni-doping on decreasing the particle size of iron sulfide and enhancing the ion/electron transport ability,thus accounting for the exceptional rate capability of Y-S Ni-FeS_(2)@C composite.

关键词： FeS_(2) Ni-doping yolk-shell structure anode potassium-ion batteries

yolk-shell P3-Type K_(0.5)[Mn_(0.85)Ni_(0.1)Co_(0.05)]O_(2):A Low-Cost Cathode for Potassium-Ion Batteries

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Energy & Environmental Materials 2022年第1期5卷 261-269页

作者： Jiaxin Hao Ke Xiong Jiang Zhou Apparao M.Rao Xianyou Wang Huan Liu Bingan Lu School of Physics and Electronics State Key Laboratory of Advanced Design and Manufacturing for Vehicle BodyHunan UniversityChangsha 410082China Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education Hunan Province Key Laboratory of Electrochemical Energy Storage and ConversionSchool of ChemistryXiangtan UniversityXiangtan 411105China School of Materials Science and Engineering Central South UniversityChangsha 410083China Department of Physics and Astronomy Clemson Nanomaterials InstituteClemson UniversityClemson SC 29634USA College of Materials Science and Engineering Hunan University of Scienceand TechnologyXiangtan 411201China Fujian Strait Research Institute of Industrial Graphene Technologies Quanzhou 362000China

Low-cost preparation methods for cathodes with high capacity and long cycle life are crucial for commercializing potassium-ion batteries(PIBs).Presently,the charging/discharging strain that develops in the active cathode material of PIBs causes cracks in the particles,leading to a sharp capacity fade.Here,to abate the strain release and the need for an industrially relevant process,a simple low-cost co-precipitation method for synthesizing yolk-shell P3-type K_(0.5)[Mn_(0.85)Ni_(0.1)Co_(0.05)]O_(2) (YS-KMNC)was reported.As cathode material for PIBs,the YS-KMNC delivers a high reversible capacity(96 mAh g^(-1) at 20 mA g^(-1))and excellent cycle stability(80.5%retention over 400 cycles at a high current density of 200 mA g^(-1)).More importantly,a full battery assembled with the YS-KMNC cathode and a commercial graphite anode exhibits a high operating voltage(0.5-3.4 V)and an excellent cycling performance(84.2%retention for 100 cycles at 100 mA g^(-1)).Considering the low-cost,simple production process and high performance of YS-KMNC cathode,this work could pave the way for the commercial development of PIBs.

关键词： cathode materials K_(0.5)[Mn_(0.85)Ni_(0.1)Co_(0.05)]O_(2) strain release volume expansion yolk-shell structure

Controlled synthesis of MOF-derived hollow and yolk–shell nanocages for improved water oxidation and selective ethylene glycol reformation

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eScience 2023年第5期3卷 69-76页

作者： Minghong Huang Changsheng Cao Li Liu Wenbo Wei Qi-Long Zhu Zhenguo Huang School of Civil&Environmental Engineering University of Technology SydneyUltimoNew South Wales 2007Australia State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of Sciences(CAS)Fuzhou 350002China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108China

Delicately designed metal–organic framework(MOF)-derived nanostructured electrocatalysts are essential for improving the reaction kinetics of the oxygen evolution reaction and tuning the selectivity of small organic molecule oxidation reactions.Herein,novel oxalate-modified hollow CoFe-based layered double hydroxide nanocages(h-CoFe-LDH NCs)and yolk–shell ZIF@CoFe-LDH nanocages(ys-ZIF@CoFe-LDH NCs)are developed through an etching–doping reconstruction strategy from a Co-based MOF precursor(ZIF-67).The distinctive nanostructures,along with the incorporation of the secondary metal element and intercalated oxalate groups,enable h-CoFe-LDH NCs and ys-ZIF@CoFe-LDH NCs to expose more active sites with high intrinsic activity.The resultant h-CoFe-LDH NCs exhibit outstanding OER activity with an overpotential of only 278 mV to deliver a current density of 50 mA cm^(-2).Additionally,controlling the reconstruction degree enables the formation of ys-ZIF@CoFe-LDH NCs with a yolk–shell nanocage nanostructure,which show outstanding electrocatalytic performance for the selective ethylene glycol oxidation reaction(EGOR)toward formate,with a Faradaic efficiency of up to 91%.Consequently,a hybrid water electrolysis system integrating the EGOR and the hydrogen evolution reaction using Pt/C||ys-ZIF@CoFe-LDH NCs is explored for energy-saving hydrogen production,requiring a cell voltage 127 mV lower than water electrolysis to achieve a current density of 50 mA cm^(-2).This work demonstrates a feasible way to design advanced MOF-derived electrocatalysts toward enhanced electrocatalytic reactions.

关键词： Metal-organic frameworks LDH nanocages yolk-shell structure Oxygen evolution Ethylene glycol oxidation