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Chloride ion battery:A new emerged electrochemical system for next-generation energy storage

Journal of Energy Chemistry 2024年第1期88卷 154-168,I0004页

作者： Shulin Chen Lu Wu Yu Liu Peng Zhou Qinyou An Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070HubeiChina State Key Laboratory of Refractories and Metallurgy Institute of Advanced Materials and NanotechnologyWuhan University of Science and TechnologyWuhan 430081HubeiChina

In the scope of developing new electrochemical concepts to build batteries with high energy density,chloride ion batteries(CIBs)have emerged as a candidate for the next generation of novel electrochemical energy storage technologies,which show the potential in matching or even surpassing the current lithium metal batteries in terms of energy density,dendrite-free safety,and elimination of the dependence on the strained lithium and cobalt ***,the development of CIBs is still at the initial stage with unsatisfactory performance and several challenges have hindered them from reaching *** this review,we examine the current advances of CIBs by considering the electrode material design to the electrolyte,thus outlining the new opportunities of aqueous CIBs especially combined with desalination,chloride redox battery,*** respect to the developing road of lithium ion and fluoride ion batteries,the possibility of using solid-state chloride ion conductors to replace liquid electrolytes is tentatively *** beyond,perspectives and clear suggestions are concluded by highlighting the major obstacles and by prescribing specific research topics to inspire more efforts for CIBs in large-scale energy storage applications.

关键词： Chloride ion battery Anion shuttling Conversion reaction Chloride redox

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Anion competition for Li^(+)solvated coordination environments in poly(1,3 dioxolane)electrolyte to enable high-voltage lithium metal solid-state batteries

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Journal of Energy Chemistry 2024年第9期96卷 633-641页

作者： Qiujun Wang Yanqiang Ma Xiaomeng Jia Di Zhang Zhaojin Li Huilan Sun Qujiang Sun Bo Wang Li-Zhen Fan Hebei Key Laboratory of Flexible Functional Materials School of Materials Science and EngineeringHebei University of Science and TechnologyShijiazhuang 050000HebeiChina Beijing Advanced Innovation Center for Materials Genome Engineering Institute of Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China

Gel-based polymer electrolytes are limited by the polarity of the residual solvent,which restricts the coupling-breaking behaviour during Li^(+)conduction,resulting in the Li^(+)transport kinetics being greatly ***,we designed anion competitive gel polymer electrolyte(ACPE)by introducing lithium difluoro(oxalato)borate(LiDFOB)anion into the 1,3-dioxolane(DOL)in situ polymerisation *** enhances the ionic dipole interaction between Li^(+)and the solvent molecules and synergizes with Li^(+)across the solvation site of the polymer ethylene oxide(EO)unit,combination that greatly improves the Li^(+)transport *** a result,ACPE exhibits 1.12 mS cm^(−1)ionic conductivity and 0.75 Li^(+)transfer number at room ***,this intra-polymer solvation sheath allows preferential desolvation of DFOB−,which contributes to the formation of kinetically stable anion-derived interphase and effectively mitigates side *** results demonstrate that the assembled Li||NCM622 solid-state battery exhibits lifespan of over 300 cycles with average Coulombic efficiency of 98.8%and capacity retention of 80.3%.This study introduces a novel approach for ion migration and interface design,paving the way for high-safety and high-energy-density batteries.

关键词： Li-metal batteries Poly(1,3-dioxolane) In situ polymerization Solid-state polymer electrolytes Anion competition

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Non-halogenated and polarized solid additives mediating the blend morphologies for efficient organic solar cells

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Journal of Energy Chemistry 2025年第4期103卷 458-464页

作者： Yuyao Xu Xinyu He Yangdan Tao Xiukun Ye Hongzheng Chen Chang-Zhi Li State Key Laboratory of Silicon and Advanced Semiconductor Materials Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027ZhejiangChina

The fine control of active blend morphologies is crucial to achieve efficient and stable organic solar cells(OSCs).Herein,by introducing structurally simple,non-halogenated volatile solid additives,we have demonstrated that the polar 2-naphthonitrile(2-CAN)additives help modulate the kinetics of blend morphological evolution during film *** is revealed that 2-CAN favorably interacted with acceptor moieties,and the transition from presence to absence of additives triggered the arrangement and aggregation of acceptors,hence yielding the ordered molecular stacks in the bulk heterojunction(BHJ)*** blend morphologies with fibril networks were established to improve the excitonic and charge dynamics of active blends,enabling PM6:L8-BO binary OSCs with the promising efficiency of 19.08%(with 2-CAN),which outperformed that of devices with non-polar naphthalene(NA)additives(18.18%)or without additive treatments(17.43%).Meanwhile,non-halogenated 2-CAN exhibited excellent processing features of reproducibility and versatility toward different active blends for fabricating efficient *** 2-CAN-assisted devices with robust transport layers allowed maintaining decent thermal stabilities under continuous 85℃ of thermal ***,this work provides an effective strategy on tuning blend morphologies for efficient organic photovoltaics.

关键词： Organic solar cell Solid additive Morphology Non-halogen

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Unveiling the homogenization microstructure evolution and its effect on cellular structure for Fe-rich Sm-Co-Fe-Cu-Zr magnets

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Journal of materials science & Technology 2024年第27期194卷 142-150页

作者： Qiangfeng Li Chao Wang Lei Wang Yifei Bi Yikun Fang Yue Zhang Minggang Zhu Wei Li Division of Functional Materials Central Iron and Steel Research InstituteBeijing 100081China Academy for Advanced Interdisciplinary Science and Technology Beijing Advanced Innovation Center for Materials Genome Engineering and Beijing Key Laboratory for Advanced Energy Materials and TechnologiesSchool of Materials Science and EngineeringUniversity of Science and Technology BeijingBeijing 100083China

The solution-treated Fe-rich 2:17-type Sm-Co-based magnets generally contain an inhomogeneous mi-crostructure,which hinders the development of the complete cellular structure required for high-performance ***,the microstructure evolution of Sm(Cobal Fe_(0.31)Cu_(0.07)Zr_(0.025))_(7.7)magnet during the solution treatment is systematically *** the normal Fe-medium magnets,it was in-terestingly found that the initial-stage solution-treated Sm(Cobal Fe_(0.31)Cu_(0.07)Zr_(0.025))_(7.7)magnet possesses a profuse lamellar-type *** the lamellar-type microstructure,there are three microre-gions exhibiting an obvious difference in composition and 2:17R ordering ***,various 1:3R phases precipitated within the lamellar-type *** the disappearance of lamellar-type mi-crostructure,the 1:7H phase increased substantially,and the distribution of defect-aggregated cell bound-aries became uniform,promoting the homogeneous precipitation of 1:5H cell boundary phases during *** current study reveals a typical microstructural evolution in Fe-rich 2:17-type Sm-Co-based magnets during solution treatment.

关键词： Sm_(2)Co_(17)magnet Supersaturated solid solution Phase transformation TEM

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Chlorofullerene C_(60)Cl_(6) Enables Efficient and Stable Tin-Based Perovskite Solar Cells

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Energy & Environmental materials 2024年第1期7卷 176-183页

作者： Jingfu Chen Chengbo Tian Chao Sun Panpan Yang Wenjing Feng Lingfang Zheng Liu Yang Enlong Hou Jiefeng Luo Liqiang Xie Zhanhua Wei Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing Institute of Luminescent Materials and Information DisplaysCollege of Materials Science and EngineeringHuaqiao UniversityXiamen 361021China

Tin-based perovskite solar cells(TPSCs)have received great attention due to their eco-friendly properties and high theoretical ***,the fast crystallization feature of tin-based perovskites leads to poor film quality and limits the corresponding device ***,a chlorofullerene,C_(60)Cl_(6),with six chlorine attached to the C_(60)cage,is applied to modulate the crystallization process and passivate grain boundary defects of the perovskite *** chemical interactions between C_(60)Cl_(6)and perovskite components retard the transforming process of precursors to perovskite crystals and obtain a high-quality tin-based perovskite *** is also revealed that the C_(60)Cl_(6)located at the surfaces and grain boundaries can not only passivate the defects but also offer a role in suturing grain boundaries to suppress the detrimental effects of water and oxygen on perovskite films,especially the oxidation of Sn^(2+)to Sn^(4+).As a result,the C_(60)Cl_(6)-based device yields a remarkably improved device efficiency from 10.03%to 13.30%with enhanced *** work provides a new strategy to regulate the film quality and stability of TPSCs using functional fullerene materials.

关键词： crystallization regulation defect passivation fullerene derivative perovskites solar cell tin-based perovskite

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Stabilizing semi-transparent perovskite solar cells with a polymer composite hole transport layer

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Nano Research 2024年第3期17卷 1500-1507页

作者： Yongbin Jin Huiping Feng Zheng Fang Liu Yang Kaikai Liu Bingru Deng Jingfu Chen Xueling Chen Yawen Zhong Jinxin Yang Chengbo Tian Liqiang Xie Zhanhua Wei Xiamen Key Laboratory of Optoelectronic Materials and Advanced Manufacturing Institute of Luminescent Materials and Information DisplaysCollege of Materials Science and EngineeringHuaqiao UniversityXiamen 361021China

Semi-transparent perovskite solar cells(ST-PSCs)have broad applications in building integrated ***,the stability of ST-PSCs needs to be improved,especially in n-i-p ST-PSCs since the doped 2,2',7,7'-tetrakis(N,N-di-p-methoxyphenyl-amine)-9,9'-spirobifluorene(Spiro-OMeTAD)is unstable at elevated temperatures and high *** this work,aπ-conjugated polymer poly[(2,6-(4,8-bis(5-(2-ethylhexyl)thiophene-2-yl)-benzo[1,2-b:4,5-b']dithiophene))-alt-(5,5-(1',3'-di-2-thienyl-5',7'-bis(2-ethylhexyl)benzo[1',2'-c:4',5'-c']dithiophene-4,8-dione)](PBDB-T)is selected to form a polymer composite hole transport layer(HTL)with *** sulfur atom of the thiophene unit and the carbonyl group of the polymer interact with the undercoordinated Pb2+at the perovskite surface,which stabilizes the perovskite/HTL interface and passivates the interfacial *** incorporation of the polymer also increases the glass transition temperature and the moisture resistance of *** a result,we obtain ST-PSCs with a champion efficiency of 13.71%and an average visible light transmittance of 36.04%.Therefore,a high light utilization efficiency of 4.94%can be ***,the encapsulated device can maintain 84%of the initial efficiency after 751 h under continuous one-sun illumination(at 30%relative humidity)at the open circuit and the unencapsulated device can maintain 80%of the initial efficiency after maximum power tracking for more than 1250 h under continuous one-sun illumination.

关键词： semi-transparent solar cells π-conjugated polymer composite hole transport layer building integrated photovoltaics

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Influence of pH value on corrosion behavior of non-equiatomic Fe_(40)Mn_(20)Cr_(20)Ni_(20) high-entropy alloy

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Journal of Iron and Steel Research International 2025年第4期32卷 1114-1124页

作者： Zhen Wang Jun-feng Duan Jun-wei Qiao Hong-yan Che Xi-kou He Central Iron and Steel Research Institute Co. Ltd.Beijing100083China College of Materials Science and Engineering Taiyuan University of TechnologyTaiyuan030024ShanxiChina Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of EducationTaiyuan University of TechnologyTaiyuan030024ShanxiChina

The electrochemical performance and corrosion properties of Fe_(40)Mn_(20)Cr_(20)Ni_(20) high-entropy alloys(HEAs)in a 3.5%NaCl solution with various pH values were thoroughly *** results revealed a close correlation between the corrosion properties of HEAs and the pH *** the one hand,the pH value can affect the semiconducting properties of the passive film on the alloy surfaces,thereby further influencing the protective capacity of the passive *** the other hand,an excess of H+or OH−promotes the growth of localized corrosion,facilitating the formation of a larger number of larger-sized localized corrosion ***,the corrosion of HEAs is most severe in acidic solutions.

关键词： Fe_(40)Mn_(20)Cr_(20)Ni_(20)alloy Corrosion mechanism High-entropy alloy pH value Passive film

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Defect chemistry and thermal conductivity of the εSmO_(1.5)·(1−ε)ZrO_(2)(0.2≤ε≤0.65)ceramics:Effect of the nonstoichiometry

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Journal of advanced Ceramics 2024年第11期13卷 1823-1834页

作者： Zhixue Qu Tong Zhang Wei Pan Key Laboratory of Advanced Functional Materials Education Ministry of ChinaCollege of Materials Science and EngineeringBeijing University of TechnologyBeijing 100124China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084China

Rare-earth zirconate pyrochlores,which exhibit various interesting properties,especially low thermal conductivity,are of great *** is an effective strategy involving defect engineering to reduce the thermal conductivity of *** this work,a long series of solid solutions,εSmO_(1.5)·(1−ε)ZrO_(2)(ε=0.200,0.250,0.350,0.400,0.450,0.500,0.525,0.550,0.600,and 0.650),were designed and synthesized to investigate the effects of nonstoichiometry on the structural evolution,defect chemistry,and thermal conductivity of SmO_(1.5)–ZrO_(2) system across the entire pyrochlore phase field and phase transition *** similarity of all the Raman spectra provides an incredible opportunity to confirm the structural details and evolution of pyrochlore and defective fluorite,as well as the emergence of the expected point defects.A new solution mechanism concerning nonstoichiometry was proposed and confirmed by analyzing the variations in the experimental density and Raman *** thermal conductivities of all the samples were measured,and investigated in terms of the phonon-scattering *** results show that the nonstoichiometry with SmO1.5 excess is more effective in reducing the thermal conductivity to an extremely low value of approximately 1 W/(m·K),which can be attributed to the dramatic decrease in the average acoustic velocity in addition to the strong phonon scattering of Zr ion vacancies and oxygen *** the other hand,the nonstoichiometry with ZrO_(2) excess significantly reduces the thermal conductivity at room temperature,but conversely leads to a slight increase of it above 200°*** former variation can be attributed to the phonon scattering of the 8a interstitial oxygen ions,which has a similar effectiveness to the defects on the SmO1.5-rich *** latter variation may be attributed to the Umklapp scattering of phonons.

关键词： nonstoichiometry pyrochlore rare-earth zirconate thermal conductivity defect chemistry

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Improvement of Formation,Microstructure and Mechanical Properties of TIG Welded TC4 Titanium Alloy by Ultrasonic Coaxial Radiation

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Acta Metallurgica Sinica(English Letters) 2024年第12期37卷 2045-2056页

作者： Yihao Gao Boqiao Ren Yunhao Chen Xinchen Sui Xiaohui Zhao Chenglei Fan Chao Chen Key Laboratory of Automobile Materials School of Materials Science and EngineeringJilin UniversityChangchun130025China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin150001China

In this study,the effects of ultrasonic coaxial assisted TIG welding(U-TIG)on the formation,microstructure,and mechanical properties of TC4 titanium alloy welded joints were *** results indicated that at optimal ultrasonic power and welding current settings,remarkable improvements of welded joint were ***,the weld depth-to-width ratio increased by 267%compared to conventional TIG welding,reaching ***,the microhardness of the welded seam increased by 53%,reaching 550.1 HV,while the tensile strength of the welded joint rose to 1197.7 MPa,representing a 12.2%*** compressing effect of ultrasound concentrates the energy of the arc,thereby improving the penetration depth of the welded *** addition,ultrasonic cavitation plays a crucial role in refining the grain structure of the weld seam,consequently enhancing its strength.

关键词： TC4 alloy Ultrasonic coaxial assisted TIG welding(U-TIG) Arc shape Microstructure Mechanical properties

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Fabrication of balanced optical and photocatalytic self-cleaning ARCs by embedding nano TiO₂ particles on the surface of closed-pore silica coatings

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Ceramics International 2025年第14期51卷 19682-19692页

作者： Fang, Ze Chen, Qing Yuan, Junjie Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education School of Materials Science and Engineering Tongji University Shanghai201804 China

Due to their photocatalytic self-cleaning properties, titania modified antireflective coatings (ARCs) on photovoltaic glass have become a research hotspot. However, balancing the optical properties, photocatalytic performance, weather resistance, and process complexity of composite nanocoating remains a challenge. In this work, anatase-type nano TiO2 with an initial particle size of 5 nm was embedded on the surface of closed-pore antireflective coatings (CPARCs) through a layer-by-layer dip-coating method to prepare multifunctional antireflective coatings that perfectly solved the above problems. SEM results demonstrated that the nano TiO2 modified CPARCs had the desired closed-pore structure and nano TiO2 particles were well dispersed on the surface of the CPARCs. Si-O-Ti chemical bonds were formed between the nano TiO2 and the silica on the coating surface during the calcination process which was confirmed by FT-IR and depth-etched XPS, indicating a robust connection. The TiO2 modified double-layered CPARCs can effectively balance the absorption and reflection of light caused by TiO2, and the optical properties were even better than that of CPARCs. Compared with bare glass, the average transmittance in the wavelength ranges of 400–700 nm and 400–1100 nm is 97.53% and 95.86%, respectively. The gain effects were 6.76% and 6.05%, respectively. Furthermore, the photocatalytic performance of the coatings was proven to be better than that of the coatings in which nano TiO2 was directly mixed into the system. In addition, atomic force microscopy (AFM) observation showed that the roughness of the coatings increased after TiO2 was embedded onto the surface of the coatings, reducing the contact angle from 24.2° to 6.2°, which can be reduced to 3.6° after ultraviolet irradiation, achieving a superhydrophilic effect. The TiO2 modified CPARCs also exhibited excellent abrasion resistance and weather durability. This is a new, simple, and efficient way to prepare TiO₂ modified a

关键词： Titanium dioxide

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