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Metallized polymer current collector as “stress acceptor” for stable micron-sized silicon anodes

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Journal of Energy Chemistry 2025年第2期101卷 786-794页

作者： Ziyi Cao Haoteng Sun Yi Zhang Lixia Yuan Yaqi Liao Haijin Ji Shuaipeng Hao Zhen Li Long Qie Yunhui Huang state key laboratory of Material Processing and Die & Mold Technology School of Materials Science and Engineering Huazhong University of Science and Technology department of Chemistry Brown University

Micron-sized silicon（μSi） is a promising anode material for next-generation lithium-ion batteries due to its high specific capacity,low cost,and abundant ***,the volume expansion that occurs during cycling leads to the accumulation of undesirable stresses,resulting in pulverization of silicon microparticles and shortened lifespan of the ***,a composite film of Cu-PET-Cu is proposed as the current collector（CC） for μSi anodes to replace the conventional Cu ***-PET-Cu CC is prepared by depositing Cu on both sides of a polyethylene terephthalate（PET） *** PET layer promises good ductility of the film,permitting the Cu-PET-Cu CC to accommodate the volumetric changes of silicon microparticles and facilitates the stress release through ductile *** a result,the μSi electrode with Cu-PET-Cu CC retains a high specific capacity of 2181 mA h g-1,whereas the μSi electrode with Cu CC（μSi/Cu） exhibits a specific capacity of 1285 mA h g-1after 80 *** stress relieving effect of CuPET-Cu was demonstrated by in-situ fiber optic stress monitoring and multi-physics *** work proposes an effective stress relief strategy at the electrode level for the practical implementation of μSi anodes.

关键词： Electrode design Metallized polymer current collector Micron-sized Si anodes Stress relieving

Distinct ultrafast dynamics of bilayer and trilayer nickelate superconductors regarding the density-wave-like transitions

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Science Bulletin 2025年第2期70卷 180-186页

作者： Yidian Li Yantao Cao Liangyang Liu Pai Peng Hao Lin Cuiying Pei Mingxin Zhang Heng Wu Xian Du Wenxuan Zhao Kaiyi Zhai Xuefeng Zhang Jinkui Zhao Miaoling Lin Pingheng Tan Yanpeng Qi Gang Li Hanjie Guo Luyi Yang Lexian Yang state key laboratory of Low Dimensional Quantum physics Department of PhysicsTsinghua UniversityBeijing 100084China key lab for Magnetism and Magnetic materials of the Ministry of Education Lanzhou UniversityLanzhou 730000China Songshan Lake materials laboratory Dongguan 523808China School of Physical Science and Technology ShanghaiTech University and CAS-Shanghai Science Research CenterShanghai 201210China state key laboratory of Superlattices and Microstructures Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China ShanghaiTech laboratory for Topological physics Shanghai 200031China laboratory of High-resolution Electron Microscopy ShanghaiTech UniversityShanghai 201210China Frontier Science Center for Quantum Information Beijing 100084China

In addition to the pressurized high-temperature superconductivity,bilayer and trilayer nickelate superconductors La_(n+1)Ni_nO_(3n+1)(n=2 and 3)exhibit many intriguing properties at ambient pressure,such as orbital-dependent electronic correlation,non-Fermi liquid behavior,and density-wave ***,using ultrafast reflectivity measurement,we observe a drastic difference between the ultrafast dynamics of the bilayer and trilayer nickelates at ambient *** observe a coherent phonon mode in La_(4)Ni_(3)O_(10)involving the collective vibration of La,Ni,and O atoms,which is absent in La_(3)Ni_(2)O_(7).Temperature-dependent relaxation time diverges near the density-wave transition temperature of La_(4)Ni_(3)O_(10),while it is inversely proportional to the temperature in La_(3)Ni_(2)O_(7)above~150 K,suggesting a non-Fermi liquid behavior of La_(3)Ni_(2)O_(7).Moreover,we estimate the electron–phonon coupling constants to be 0.05–0.07 and 0.12–0.16 for La_(3)Ni_(2)O_(7)and La_(4)Ni_(3)O_(10),respectively,suggesting a relatively minor role of electron–phonon coupling in the electronic properties of La_(n+1)Ni_nO_(3n+1)at ambient *** relevant microscopic interaction and dynamic information are essential for further studying the interplay between superconductivity and density-wave transitions in nickelate superconductors.

关键词： Nickelate superconductors Density-wave state Ultrafast dynamics Electron-phonon coupling Coherent phonon

受阻酚类抗氧化剂提高准平面异质结有机太阳能电池的稳定性和性能并获得超过19%效率（英文）

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Science China materials 2025年第03期 838-849页

作者：王倩赵烁丁皓嘉朱佩佩付予昂吕玉洁路新慧朱海明廖勋凡陈义旺 key laboratory of Fluorine and silicon for Energy materials and Chemistry of Ministry of Education College of Chemistry and MaterialsJiangxi Normal University state key laboratory of Modern Optical Instrumentation Department of ChemistryZhejiang University department of physics Chinese University of Hong Kong

尽管有机太阳能电池(OSCs)在性能上取得了显著进展,但活性层材料的本征稳定性和形貌稳定性仍然限制其商业化.本文提出在准平面异质结OSCs的聚合物给体中添加受阻型酚类抗氧化剂AO1010,以提升光氧化稳定性和形貌稳定性.AO1010通过多个羟...

尽管有机太阳能电池(OSCs)在性能上取得了显著进展,但活性层材料的本征稳定性和形貌稳定性仍然限制其商业化.本文提出在准平面异质结OSCs的聚合物给体中添加受阻型酚类抗氧化剂AO1010,以提升光氧化稳定性和形貌稳定性.AO1010通过多个羟基结合位点与超氧自由基反应,淬灭自由基并终止链式降解反应,从而提高材料的本征稳定性.此外,AO1010优良的热稳定性和空间位阻效应抑制了活性层中给体和受体材料的过度聚集,改善了形貌稳定性.AO1010中的羟基还与明星给体PM6中的氟原子形成氢键,增强了分子间的相互作用,提升了PM6的结晶度和分子堆积有序性,有利于电荷分离和传输.因此,添加AO1010的PM6/L8-BO体系器件效率提高至19.03%,稳定性也显著改善.

关键词：

Recent progress on surface chemistryⅡ:Property and characterization

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Chinese Chemical Letters 2025年第1期36卷 8-57页

作者： Xin Li Zhen Xu Donglei Bu Jinming Cai Huamei Chen Qi Chen Ting Chen Fang Cheng Lifeng Chi Wenjie Dong Zhenchao Dong Shixuan Du Qitang Fan Xing Fan Qiang Fu Song Gao Jing Guo Weijun Guo Yang He Shimin Hou Ying Jiang Huihui Kong Baojun Li Dengyuan Li Jie Li Qing Li Ruoning Li Shuying Li Yuxuan Lin Mengxi Liu Peinian Liu Yanyan Liu Jingtao Lü Chuanxu Ma Haoyang Pan JinLiang Pan Minghu Pan Xiaohui Qiu Ziyong Shen Qiang Sun Shijing Tan Bing Wang Dong Wang Li Wang Lili Wang Tao Wang Xiang Wang Xingyue Wang Xueyan Wang Yansong Wang Yu Wang Kai Wu Wei Xu Na Xue Linghao Yan Fan Yang Zhiyong Yang Chi Zhang Xue Zhang Yang Zhang Yao Zhang Xiong Zhou Junfa Zhu Yajie Zhang Feixue Gao Yongfeng Wang Center for Carbon-based Electronics and key laboratory for the physics and Chemistry of Nanodevices School of ElectronicsPeking UniversityBeijing 100871China Spin-X Institute School of MicroelectronicsSouth China University of TechnologyGuangzhou 511442China School of materials and Energy Guangzhou Key Laboratory of Low-Dimensional Materials and Energy Storage DevicesGuangdong University of TechnologyGuangzhou 510006China Faculty of materials Science and Engineering Kunming University of Science and TechnologyKunming 650093China i-lab CAS Key Laboratory of Nanophotonic Materials and DevicesSuzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou 215123China CAS key laboratory of Molecular Nanostructure and Nanotechnology CAS Research/Education Center for Excellence in Molecular SciencesBeijing National Laboratory for Molecular Sciences(BNLMS)Institute of ChemistryChinese Academy of SciencesBeijing 100190China state key laboratory for Organic Electronics and Information Displays&Jiangsu key laboratory for Biosensors Institute of Advanced MaterialsJiangsu National Synergetic Innovation Center for Advanced MaterialsNanjing University of Posts and TelecommunicationsNanjing 210023China Institute of Functional Nano and Soft materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials and DevicesSoochow UniversitySuzhou 215123China Hefei National Research Center for Physical Sciences at the Microscale and Synergetic Innovation Center of Quantum Information and Quantum physics University of Science and Technology of ChinaHefei 230026China Institute of physics&University of Chinese Academy of Sciences Beijing 100190China state key laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023China College of Chemistry Beijing Normal UniversityBeijing 100875China Beijing National laboratory for Molecular Sciences(BNLMS) College of Chemistry and Molecular EngineeringPeking UniversityBeijing 100871China School

Surface with well-defined components and structures possesses unique electronic,magnetic,optical and chemical *** a result,surface chemistry research plays a crucial role in various fields such as catalysis,energy,materials,quantum,and *** science mainly investigates the correspondence between surface property and *** probe microscopy(SPM)techniques are important tools to characterize surface properties because of the capability of atomic-scale imaging,spectroscopy and manipulation at the single-atom *** this review,we summarize recent advances in surface electronic,magnetic and optical properties characterized mainly by SPM-based *** focus on elucidating theπ-magnetism in graphene-based nanostructures,construction of spin qubits on surfaces,topology properties of surface organic structures,STM-based light emission,tip-enhanced Raman spectroscopy and integration of machine learning in SPM studies.

关键词： Surface chemistry Scanning probe microscopy π-Magnetism Spin qubits Tip-enhanced Raman spectroscopy

Combining machine learning algorithms with traditional methods for resolving the atomic-scale dynamic structure of monolayer MoS_(2) in high-resolution transmission electron microscopy

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Chinese physics B 2025年第1期34卷 162-170页

作者： Yu Meng Shuya Wang Xibiao Ren Han Xue Xuejun Yue Chuanhong Jin Shanggang Lin Fang Lin department of Applied physics College of Electronic EngineeringSouth China Agricultural UniversityGuangzhou 510642China state key laboratory of silicon and Advanced Semiconductor materials School of Materials Science and EngineeringZhejiang UniversityHangzhou 310027China materials Sciences Division Lawrence Berkeley National LaboratoryBerkeleyCA 94720USA

High-resolution transmission electron microscopy(HRTEM)promises rapid atomic-scale dynamic structure ***,the precision limitations of aberration parameters and the challenge of eliminating aberrations in Cs-corrected transmission electron microscopy constrain resolution.A machine learning algorithm is developed to determine the aberration parameters with higher precision from small,lattice-periodic crystal *** proposed algorithm is then validated with simulated HRTEM images of graphene and applied to the experimental images of a molybdenum disulfide(MoS_(2))monolayer with 25 variables(14 aberrations)resolved in wide *** these measured parameters,the phases of the exit-wave functions are reconstructed for each image in a focal series of MoS_(2)*** images were acquired due to the unexpected movement of the specimen ***-dimensional data extraction reveals time-varying atomic structures and *** particular,the atomic evolution of the sulfur-vacancy point and line defects,as well as the edge structure near the amorphous,is visualized as the resolution has been improved from about 1.75?to 0.9 *** method can help salvage important transmission electron microscope images and is beneficial for the images obtained from electron microscopes with average stability.

关键词： aberration measurement high-resolution transmission electron microscopy feature-extraction networks exit-wave reconstruction monolayer MoS_(2)

Structural, electrical, and optical properties of ZnInO alloy thin films

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Chinese physics B 2011年第10期20卷 340-344页

作者：才玺坤原子健朱夏明王雄张兵坡邱东江吴惠桢 department of physics State Key Laboratory of Silicon Materials Zhejiang University

Indium zinc oxide （IZO） thin films with different percentages of In content （In/[In＋Zn]） are synthesized on glass substrates by magnetron sputtering, and the structural, electrical and optical properties of IZO thin films deposited at different In2O3 target powers are investigated. IZO thin films grown at different In2O3 target sputtering powers show evident morphological variation and different grain sizes. As the In2O3 sputtering power rises, the grain size becomes larger and electrical mobility increases. The film grown with an In2O3 target power of 100 W displays the highest electrical mobility of 13.5 cm.V-1-s-1 and the lowest resistivity of 2.4× 10^-3 Ω.cm. The average optical transmittance of the IZO thin film in the visible region reaches 80% and the band gap broadens with the increase of In2O3 target power, which is attributed to the increase in carrier concentration and is in accordance with Burstein-Moss shift theory.

关键词： indium-zinc oxide magnetron sputtering In content optical properties electrical prop-erties

Effects of annealing process on characteristics of fully transparent zinc tin oxide thin-film transistor

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Chinese physics B 2014年第2期23卷 364-368页

作者：陈勇跃王雄才玺坤原子健朱夏明邱东江吴惠桢 department of physics State Key Laboratory of Silicon MaterialsZhejiang University

Annealing effect on the performance of fully transparent thin-film transistor （TTFT）, in which zinc tin oxide （ZnSnO） is used as the channel material and SiO2 as the gate insulator, is investigated. The ZnSnO active layer is deposited by radio frequency magnetron sputtering while a SiO2 gate insulator is formed by plasma-enhanced chemical vapor deposition. The saturation field-effect mobility and on/off ratio of the TTFT are improved by low temperature annealing in vacuum. Maximum saturation field-effect mobility and on/off ratio of 56.2 cm2/（V.s） and 3×10^5 are obtained, respectively. The transfer characteristics of the ZnSnO TPT are simulated using an analytical model and good agreement between measured and the calculated transfer characteristics is demonstrated.

关键词： zinc tin oxide thin-film transistors mobility annealing

The photosensitive effect of Ce on the precipitation of Ag nanoparticles induced by femtosecond laser in silicate glass

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Chinese physics B 2009年第7期18卷 2858-2863页

作者：戴晔邱建荣 department of physics Shanghai University state key laboratory of silicon materials Zhejiang University

This paper studies the photosensitive effect of cerium oxide on the precipitation of Ag nanoparticles after femtosecond laser irradiating into silicate glass and successive *** analysis and diffraction efficiency measurements show that the introduction of cerium oxide may increase the concentration of Ag atoms in the femtosecond laser-irradiated regions resulting from the photoreduction reaction Ce^3＋＋ Ag^＋ → Ce^4＋＋ Ag^0 via multiphoton *** results promote the aggregation of Ag nanopartieles during the annealing process. It is also found that different concentrations of cerium oxide may influence the Ag nanoparticle precipitation in the corresponding glass.

关键词： femtosecond laser glass photosensitive effect

Residual compressive stress and intensity of infrared absorption of cubic BN films prepared by plasma enhanced chemical vapor deposition

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Chinese physics B 2014年第3期23卷 475-481页

作者：杨杭生金盼盼徐亚伯李海洋 state key laboratory of silicon materials Department of Materials Science and Engineering Zhejiang University department of physics Zhejiang University

Theoretical and experimental investigations on the dependence of the intensity of infrared （IR） absorption of poly- crystalline cubic boron nitride thin films under the residual compressive stress conditions have been performed. Our results indicate that the intensity of the IR absorption is proportional to the total degree of freedom of all the ions in the ordered regions. The reduction of interstitial Ar atom concentration, which causes the increase in the ordered regions of cubic boron nitride （cBN） crystallites, could be one cause for the increase in the intensity of IR absorption after residual compressive stress relaxation. Theoretical derivation is in good agreement with the experimental results concerning the IR absorption intensity and the Ar interstitial atom concentration in cubic boron nitride films measured by energy dispersion X-ray spec- troscopy. Our results also suggest that the interstitial Ar is the origin of residual compressive stress accumulation in plasma enhanced cBN film deposition.

关键词： infrared absorption compressive stress degree of freedom interstitial atom