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Sulfur-doped hard carbon hybrid anodes with dual lithium-ion/metal storage bifunctionality for high-energy-density lithium-ion batteries

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Carbon Energy 2023年第1期5卷 71-81页

作者： Sungmin Cho Jong Chan Hyun Son Ha Yeonhua Choi Honggyu Seong Jaewon Choi Hyoung-Joon Jin Young Soo Yun Program in Environmental and Polymer Engineering Inha UniversityIncheonSouth Korea KU-KIST Graduate School of Converging Science and Technology Korea UniversitySeoulSouth Korea Departmant of Chemistry and Research Institute of Natural Science Gyeongsang National UniversityJinjuSouth Korea Department of Polymer Science and Engineering Inha UniversityIncheonSouth Korea Division of Energy Engineering Kangwon National UniversityGangwon-doSouth Korea

Bifunctional hybrid anodes(BHAs),which are both a high-performance active host material for lithium-ion storage as well as a guiding agent for homogeneous lithium metal nucleation and growth,exhibit significant potential as anodes for next-generation high-energy-density lithium-ion batteries(LIBs).In this study,sulfur-doped hard carbon nanosphere assemblies(S-HCNAs)were prepared through a hydrothermal treatment of a liquid organic precursor,followed by high-temperature thermal annealing with elemental sulfur for application as BHAs for *** a carbonate-based electrolyte containing fluoroethylene carbonate additive,the S-HCNAs showed high lithium-ion storage capacities in sloping as well as plateau voltage sections,good rate capabilities,and stable *** addition,high average Coulombic efficiencies(CEs)of~96.9%were achieved for dual lithium-ion and lithium metal storage *** the LIB full-cell tests with typical NCM811 cathodes,the S-HCNA-based BHAs containing~400 mA h g^(−1) of excess lithium led to high energy and power densities of~500Wh kg^(−1) and~1695Wkg^(−1),respectively,and a stable cycling performance with~100%CEs was achieved.

关键词： hard carbon hybrid anode lithium-ion batteries lithium metal anode lithium metal batteries sulfur-doped carbon

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Fluorinated Functional Units for Li+ Flux Homogenization in Silica Framework-Based Zwitterionic Single Ion Conductors for Stable Lithium Metal Batteries

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Advanced Energy Materials 2025年第21期15卷

作者： Handayani, Puji Lestari Yun, Susung Kim, Gihyeon Choi, U Hyeok Department of Polymer Science and Engineering and Program in Environmental and Polymer Engineering Inha University Incheon22212 Korea Republic of

Progress in commercializing solid polymer electrolytes (SPEs) for lithium metal batteries (LMBs) has been impeded by challenges, like concentration polarization, non-uniform Li+ flux, and an unstable solid electrolyte interface (SEI), which contribute to dendrite formation. To address these issues, silica framework (SF)-based single-ion conductors are proposed, featuring a unique solvation channel composed of a fluorinated segment, a high-dipole zwitterion, and a rotation-motion-driven ion-hopping medium. This design promotes low resistance at the cathode/electrode interface, suppresses dendrite growth at the anode/electrolyte interface, and maintains a uniform Li+ flux. This results show that continuous ion channels within a robust framework enhance Li-ion dissociation and transport, achieving high ionic conductivity (σDC = 8.8 × 10−4 S cm−1), a modulus of 0.9 GPa, a high lithium transference number (≈0.83), and an extended electrochemical stability window (up to 5.2 V) at 25 °C. This design fosters the formation of a hybrid organic/inorganic SEI layer composed of Li2CO3, LiF, and Li2O, enabling ultra-stable Li plating/stripping for over 4000 h at 0.1 mA cm−2. Furthermore, the full cells demonstrate excellent rate performance and long-term cycling stability and capacity retention (81% for Li||LFP and 86% for Li||NCM811 after 400 cycles at 1 C) and high coulombic efficiency, offering a promising strategy to stable LMBs. © 2025 The Author(s). Advanced Energy Materials published by Wiley-VCH GmbH.

关键词： Solid electrolytes

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Ion-Anchoring Dipole-Integrated Composite Elastomer Electrolyte and Cathode for High-Performance Lithium Metal Batteries via Multiple-Bridge engineering

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Advanced Energy Materials 2025年第0期

作者： Cho, A Hyeon Je, Ji Hyang Choi, U Hyeok Department of Polymer Science and Engineering and Program in Environmental and Polymer Engineering Inha University Incheon22212 Korea Republic of

Solid-state electrolytes (SSEs) hold significant potential for advancing lithium metal batteries (LMBs) by enhancing safety through the replacement of liquid electrolytes. However, challenges such as low ionic conductivity, limited electrochemical stability, and poor electrolyte/electrode interface compatibility hinder the development of high-energy-density LMBs. Herein, a strategy for designing SSEs is proposed using multiple-bridge engineered composite elastomer electrolytes (CEEs) that incorporate ion-rotating dipole interactions, ion-anchoring dipole interactions, and hydrogen bonding, along with a CEE-based composite elastomer cathode (CEC). This design combines a volume-adaptive elastomer matrix, a high-Li+ conducting deep eutectic electrolyte, and robust nanowires. The resultant CEE exhibits high ionic conductivity (1.7 × 10−3 S cm−1), a lithium transference number of 0.72, and a wide electrochemical stability window (up to 4.9 V) at 298 K. The engineered uniform Li+ flux also promotes stable Li plating/stripping for over 900 h at 0.1 mA cm−2. Furthermore, the LFP-based CEC|CEE|Li full cells deliver a reversible capacity of 133 mAh g−1 with 95% retention after 300 cycles in coin cells, and 129 mAh g−1 with 96% retention after 250 cycles in pouch cells at 1 C. This strategy presents a promising approach for designing solid-state polymer electrolytes to extend the lifespan of high-energy-density LMBs. © 2025 Wiley-VCH GmbH.

关键词： Elastomers

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Thermoelectric generator and temperature sensor based on polyamide doped n-type single-walled nanotubes toward self-powered wearable electronics

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材料科学技术（英文版） 2025年第4期207卷 246-254页

作者： Jiye Xiao Zhen Zhang Zhixiong Liao Jinzhen Huang Dongxia Xian Runhao Zhu Shichao Wang Chunmei Gao Lei Wang Shenzhen Key Laboratory of Polymer Science and Technology College of Materials Science and EngineeringShenzhen UniversityShenzhen 518060China Fiber and Biopolymer Research Institute Department of Plant and Soil ScienceTexas Tech UniversityLubbockTX 79403USA College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen 518060China

Due to its ability to convert body heat into electricity,organic thermoelectric material is considered a promising and smart maintenance-free power source to charge wearable ***,develop-ing flexible n-type organic thermoelectric materials and wearable p/n junction thermoelectric devices remains *** this work,two insulated polyamides(PA6 and PA66)that have been widely used as fiber materials are employed as novel dopants for converting p-type single-walled carbon nanotubes(SWCNTs)to n-type thermoelectric *** of the electron transferability of the amide group,polyamide-doped SWCNTs exhibit excellent thermopower values as large as-56.0 μV K-1 for PA66,and-54.5 μV K-1 for *** devices with five p/n junctions connected in series are *** testing device produces a thermoelectric voltage of 43.1 mV and generates 1.85 μW thermoelectric power under temperature gradients of approximately 80 ***,they display charming capability for temperature recognition and monitoring human activities as *** promising results suggest that the flexible polyamide-doped SWCNT composites herein have high application potential as wearable thermoelectric electronics.

关键词： N-type thermoelectric material Self-powered sensors Composites Single-walled carbon nanotubes Wearable electronics

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Electrospinning engineering of gas electrodes for high-performance lithium-gas batteries

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Carbon Energy 2024年第10期6卷 353-398页

作者： Jingzhao Wang Xin Chen Jianan Wang Xiangming Cui Ze Wang Guangpeng Zhang Wei Lyu Maxim Shkunov S.Ravi P.Silva Yaozu Liao Kai Yang Wei Yan State Key Laboratory of Multiphase Flow in Power Engineering Department of Environmental Science and EngineeringSchool of Energy and Power EngineeringXi'an Jiaotong UniversityXi'anChina Advanced Technology Institute University of SurreyGuildfordSurreyUK State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and EngineeringDonghua UniversityShanghaiChina

Lithium-gas batteries(LGBs)have garnered significant attention due to their impressive high-energy densities and unique gas conversion ***,the practical application of LGBs faces substantial challenges,including sluggish gas conversion kinetics inducing in low-rate performance and high overpotential,along with limited electrochemical reversibility leading to poor cycle *** imperative task is to develop gas electrodes with remarkable catalytic activity,abundant active sites,and exceptional electrochemical ***,a versatile and well-established technique for fabricating fibrous nanomaterials,has been extensively explored in LGB *** this work,we emphasize the critical structure-property for ideal gas electrodes and summarize the advancement of employing electrospun nanofibers(NFs)for performance enhancement in *** elucidating the fundamental principles of LGBs and the electrospinning technique,we focus on the systematic design of electrospun NF-based gas electrodes regarding optimal structural fabrication,catalyst handling and activation,and catalytic site optimization,as well as considerations for large-scale *** demonstrated principles and regulations for electrode design are expected to inspire broad applications in catalyst-based energy applications.

关键词： carbon nanofibers electrocatalyst electrospinning gas electrodes metal-gas batteries

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Constructing diverse switchable circularly polarized luminescence via a single azobenzene polymer film

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Chinese Chemical Letters 2025年第1期36卷 299-305页

作者： Xiang Wang Qingping Song Zixiang He Gong Zhang Tengfei Miao Xiaoxiao Cheng Wei Zhang State and Local Joint Engineering Laboratory for Novel Functional Polymeric Materials Department of Polymer Science and EngineeringCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou 215123China School of Chemical and Environmental Engineering Anhui Polytechnic UniversityWuhu 241000China Jiangsu Key Laboratory for Chemistry of Low-Dimensional Materials School of Chemistry and Chemical EngineeringHuaiyin Normal UniversityHuaian 223300China

Recently circularly polarized luminescence(CPL)materials have attracted significant *** reversible dynamic property to these materials has been a key focus in cutting-edge fields,such as in high-level information ***,we provided a novel and general strategy involving handednessselective filtration and ground-state chiral self-recovery(CSR)in double film system to address this *** on this strategy,we achieved CPL switch through the reversible modulation of ground-state chirality including absorption and scattering circular dichroism(CD)signals over the full UV-visible wavelength range(365-700 nm)in a single azobenzene polymer(PAzo)*** importantly,by flexibly changing the type of fluorescent films,it is convenient to achieve general excited-state CSR,that is reversible switching of full-color including ideal white(CIE coordinate(0.33,0.33)),as well as room-temperature phosphorescent *** these CPL signals without almost any intensity decay after three cycles of onand-off *** results indicated that the trans-cis isomerization and ordered rearrangement of azobenzene units in PAzo film were the fundamental reasons for realizing CPL ***,based on this system we achieved dynamic visual encryption and decryption process including multiple decryption *** study provides an effective method for constructing a universally applicable chiroptical switch in excited state.

关键词： Circularly polarized luminescence Azobenzene polymer Multiple CPL Chiral switch Information encryption

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Core/shell magnetite/copolymer composite nanoparticles enabling highly stable magnetorheological response

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International Journal of Mechanical System Dynamics 2022年第2期2卷 155-164页

作者： Wenjiao Han Shun Wang Xiaoting Rui Yuzhen Dong Hyoungjin Choi School of Energy and Power Engineering Nanjing University of Science and TechnologyNanjingChina School of Materials Science and Engineering Harbin Institute of Technology at WeihaiWeihaiChina Department of Polymer Science and Engineering Inha UniversityIncheonRepublic of Korea Program of Environmental and Polymer Engineering College of EngineeringInha UniversityIncheonRepublic of Korea

Magnetorheological fluids(MRFs)have been successfully used in a variety of smart control systems,but are still limited due to their relatively poor settling ***,a core/shell‐structured Fe_(3)O_(4)/copolymer composite nanoparticle is synthesized as a new candidate material for stimulus‐responsive MRFs to tackle the limitation of the long‐term dispersion ***‐co‐diphenylamine copolymers(PANI‐co‐PDPA)are loaded onto the surface of Fe_(3)O_(4) nanoparticles,providing a lighter density and sufficient active interface for the dispersion of magnetic particles in the carrier *** features of the Fe_(3)O_(4)/copolymer composite nanoparticles,including morphology,compositional,and crystalline properties,are *** MRF is prepared by suspending Fe_(3)O_(4)/copolymer composite nanoparticles in a nonmagnetic medium oil,and its rheological properties are assessed using a controlled shear rate test and dynamic oscillation tests using a rotational *** models including the Bingham model and the Herschel–Bulkley model are fitted to the flow curves of the *** obtained Fe_(3)O_(4)/copolymer composite shows soft‐magnetic properties,as well as greater density adaptability and higher stability,compared to Fe_(3)O_(4).Moreover,the sedimentation testing provides information about the dispersion stability characteristics of MRF and shows a good correlation with high‐stability magnetorheological(MR)*** Fe_(3)O_(4)/copolymer‐based MRF with a tunable and instantaneous MR response is considered a promising material for smart control applications.

关键词： magnetorheological fluids core/shell dispersion stability copolymer magnetite

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CADMIUM AND LEAD IONS COMPETITIVE ADSORPTION ONTO CALCIUM ALGINATE PREPARED BY TRADITIONAL AND GREEN METHODS

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UPB Scientific Bulletin, Series B: Chemistry and Materials science 2023年第2期85卷 21-34页

作者： Toma, Elişoara Simonescu, Claudia Maria Chipurici, Petre Călinescu, Ioan Deleanu, Carmen Faculty of Chemical Engineering and Biotechnologies Department of Bioresources and Polymer Science University POLITEHNICA of Bucharest Romania Faculty of Chemical Engineering and Biotechnologies Department of Analytical Chemistry and Environmental Engineering University POLITEHNICA of Bucharest Romania Kemcristal SRL Calarasi Romania

Calcium alginate (CaAlg) beads prepared by conventional, ultrasound and microwave-assisted synthesis as green methods have been applied to remove Pb(II) and Cd(II) from binary aqueous solutions. Mathematical modelling of the competitive adsorption process of Pb(II) and Cd(II) ions from binary using linear modified Langmuir isotherm equation was realized. The obtained results showed that both metal ions have an inhibitory effect in the process of removal from binary solutions. Combination of microwave and ultrasound determines the increase of the adsorption capacity of CaAlg. These results illustrate potential application of the CaAlg prepared by green methods in batch remediation of cadmium and lead ions polluted effluents. © 2023, Politechnica University of Bucharest. All rights reserved.

关键词： Ultrasonics

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Tunable Phase Structure of Side-chain Liquid Crystalline polymers Enabled by Molecular engineering of Dual Mesogenic Cores

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Chinese Journal of polymer science 2024年第10期42卷 1459-1469,I0009页

作者： Wen-Huan Yao Lan-Sheng Liu Jie Zhao Yan-Xia Wang An-Zhi Ma Zheng-Rui Ma Lan-Ying Zhang Ruo-Chen Lan College of Chemistry and Chemical Engineering Hunan UniversityChangsha410082China Key Laboratory of Eco-Functional Polymer Materials of the Ministry of Education Key Laboratory of Eco-Environmental Polymer Materials of Gansu ProvinceCollege of Chemistry and Chemical EngineeringNorthwest Normal UniversityLanzhou730070China Department of Materials Science and Engineering College of EngineeringPeking UniversityBeijing100871China Institute of Advanced Materials&Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education College of Chemistry and Chemical EngineeringJiangxi Normal UniversityNanchang330022China

A series of novel side-chain liquid crystalline(SCLC)copolymers were synthesized by attaching two distinct mesogenic units,namely a chiral cholesteryl-based monomer(M1)and an achiral biphenyl-based monomer(M2),to a poly(3-mercaptopropylmethylsiloxane)(PMMS)backbone via thiol-ene click *** influence of side chain composition on the self-assembly behavior and phase structures of these SCLC copolymers was systematically investigated using different *** indicate that three distinct liquid crystalline phases and four unique molecular configurations were identified within the polymer series,with the emergence of the liquid crystalline phase being a synergistic outcome of the two distinct side *** study underscores the critical influence of side chain dimensions,rigidity,and spatial volume on the self-assembly structures and phase characteristics of liquid crystalline polymers,providing valuable insights for the rational design and development of advanced functional materials with tailored properties.

关键词： Liquid crystalline copolymers Self-assembly Phase structure Chiral molar ratio

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engineering tiramisu-like phase change nanocomposite for superior thermal energy management and electromagnetic interference shielding

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材料科学技术（英文版） 2025年第3期206卷 113-124页

作者： Boyang Hu Hong Guo Ting Li Xiwei Cao Min Cao Weiyan Qi Ying Cui Baoan Li Carbon Neutrality Interdisciplinary Science Centre Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media PollutionCollege of Environmental Science and EngineeringNankai UniversityTianjin 300350China Carbon Neutrality Interdisciplinary Science Centre Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media PollutionCollege of Environmental Science and EngineeringNankai UniversityTianjin 300350China Department of Energy and Chemical Engineering Tianjin Ren'ai CollegeTianjin 301636China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China Laboratoire des Solides Irradiés CEA/DRF/lRAMISEcole Poly techniqueCNRSInstitut Poly technique de ParisPalaiseau F-91128France

Exploiting advanced nanocomposites isochronally integrating outstanding thermal conductivity(TC)and electromagnetic interference shielding effectiveness(EMI SE)can boost the cutting-edge application of phase change ***,we report a tiramisu-like composite(GMP),where the typical"crust-and-cheese"hierarchical structure is replicated by an innovative two-step bidirectional freezing assem-bly(BFA)and compressive ***-aligned graphene array(G-GA)with ultralow ther-mal resistance is fabricated through 1st BFA and *** the 2nd BFA,the MXene-CNF crosslinking network with hydrogen-bond actions is used for encapsulating polyethylene glycol(PEG)onto the microlayers of the G-GA ***,the microlaminated GMP4 achieves a recorded TC of 34.05 W m-1 K-1,unprecedented EMI SE of 87.4 dB,and preferable enthalpy density of 179.4 J cm-3,along with leakage-free function,and eminent thermal ***,the GMP-loaded equipment is demonstrated for efficient microelectronics cooling and sustainable solar energy *** work opens new avenues for multiscale designing multifunctional macro-composites,broadening the application prospects in advanced electronics and solar energy utilization systems.

关键词： Phase change composite Multiscale structure construction Bidirectional freezing assembly Thermal management EMI shielding

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