Science Bulletin最新文献

Over 200 times current enhancement via buckling triboelectric nanogenerator at ultra-low speed for monitoring the swelling of lithium ion batteries. 通过降压三电纳米发电机以超低速度将电流增强 200 多倍，用于监测锂离子电池的膨胀。

IF 18.8 1区综合性期刊

Science Bulletin Pub Date : 2025-01-30 Epub Date: 2024-10-17 DOI: 10.1016/j.scib.2024.10.014

Maoyi Zhang, Chaosheng Hu, Tongtong Zhang, Chris R Bowen, Rui Li, YongAn Huang, Yewang Su, Zhong Lin Wang, Ya Yang

引用次数: 0

Unilamellar MnO₂ nanosheets confined Ru-clusters combined with pulse electrocatalysis for biomass electrooxidation in neutral electrolytes. 单釉质 MnO2 纳米片与脉冲电催化相结合，用于中性电解质中的生物质电氧化。

IF 18.8 1区综合性期刊

Science Bulletin Pub Date : 2025-01-30 Epub Date: 2024-09-12 DOI: 10.1016/j.scib.2024.09.013

Yuanqing He, Chongyang Ma, Shiheng Mo, Chung-Li Dong, Wei Chen, Shuo Chen, Huan Pang, Renzhi Ma, Shuangyin Wang, Yuqin Zou

{"title":"Unilamellar MnO2 nanosheets confined Ru-clusters combined with pulse electrocatalysis for biomass electrooxidation in neutral electrolytes.","authors":"Yuanqing He, Chongyang Ma, Shiheng Mo, Chung-Li Dong, Wei Chen, Shuo Chen, Huan Pang, Renzhi Ma, Shuangyin Wang, Yuqin Zou","doi":"10.1016/j.scib.2024.09.013","DOIUrl":"10.1016/j.scib.2024.09.013","url":null,"abstract":"The electrochemical oxidation of 5-hydroxymethylfurfural (HMFOR) in alkaline electrolyte is a promising strategy for producing high-value chemicals from biomass derivatives. However, the disproportionation of aldehyde groups under strong alkaline conditions and the polymerization of HMF to form humic substances can impact the purity of 2,5-furandicarboxylic acid (FDCA) products. The use of neutral electrolytes offers an alternative environment for electrolysis, but the lack of OH- ions in the electrolyte often leads to low current density and low yields of FDCA. In this study, a sandwich-structured catalyst, consisting of Ru clusters confined between unilamellar MnO2 nanosheets (S-Ru/MnO2), was used in conjunction with an electrochemical pulse method to realize the electrochemical conversion of 5-hydroxymethylfurfural into FDCA in neutral electrolytes. Pulse electrolysis and the strong electron transfer between Ru clusters and MnO2 nanosheets help maintain Ru in a low oxidation state, ensuring high activity. The increased *OH generation led to a groundbreaking current density of 47 mA/cm2 at 1.55 V vs. reversible hydrogen electrode (RHE) and an outstanding yield rate of 98.7% for FDCA in a neutral electrolyte. This work provides a strategy that combines electrocatalyst design with an electrolysis technique to achieve remarkable performance in neutral HMFOR.","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":" ","pages":"193-202"},"PeriodicalIF":18.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142278250","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Distinct ultrafast dynamics of bilayer and trilayer nickelate superconductors regarding the density-wave-like transitions. 双层和三层镍酸盐超导体在密度波转变方面的超快动力学差异

IF 18.8 1区综合性期刊

Science Bulletin Pub Date : 2025-01-30 Epub Date: 2024-10-17 DOI: 10.1016/j.scib.2024.10.011

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

{"title":"Distinct ultrafast dynamics of bilayer and trilayer nickelate superconductors regarding the density-wave-like transitions.","authors":"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","doi":"10.1016/j.scib.2024.10.011","DOIUrl":"10.1016/j.scib.2024.10.011","url":null,"abstract":"In addition to the pressurized high-temperature superconductivity, bilayer and trilayer nickelate superconductors Lan+1NinO3n+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 transitions. Here, using ultrafast reflectivity measurement, we observe a drastic difference between the ultrafast dynamics of the bilayer and trilayer nickelates at ambient pressure. We observe a coherent phonon mode in La4Ni3O10 involving the collective vibration of La, Ni, and O atoms, which is absent in La3Ni2O7. Temperature-dependent relaxation time diverges near the density-wave transition temperature of La4Ni3O10, while it is inversely proportional to the temperature in La3Ni2O7 above ∼150 K, suggesting a non-Fermi liquid behavior of La3Ni2O7. Moreover, we estimate the electron-phonon coupling constants to be 0.05-0.07 and 0.12-0.16 for La3Ni2O7 and La4Ni3O10, respectively, suggesting a relatively minor role of electron-phonon coupling in the electronic properties of Lan+1NinO3n+1 at ambient pressure. The relevant microscopic interaction and dynamic information are essential for further studying the interplay between superconductivity and density-wave transitions in nickelate superconductors.","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":" ","pages":"180-186"},"PeriodicalIF":18.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142566780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Record-high heat transfer performance of spray cooling on 3D-printed hierarchical micro/nano-structured surface. 三维打印分层微/纳米结构表面的喷雾冷却传热性能创历史新高。

IF 18.8 1区综合性期刊

Science Bulletin Pub Date : 2025-01-30 Epub Date: 2024-10-24 DOI: 10.1016/j.scib.2024.10.028

Yongyan Hu, Yifan Lei, Xiuliang Liu, Ronggui Yang

{"title":"Record-high heat transfer performance of spray cooling on 3D-printed hierarchical micro/nano-structured surface.","authors":"Yongyan Hu, Yifan Lei, Xiuliang Liu, Ronggui Yang","doi":"10.1016/j.scib.2024.10.028","DOIUrl":"10.1016/j.scib.2024.10.028","url":null,"abstract":"Managing high-flux waste heat with controllable device working temperature is becoming challenging and critical for the artificial intelligence, communications, electric vehicles, defense and aerospace sectors. Spray cooling, which combines forced convection with phase-change latent heat of working fluids, is promising for high flux heat dissipation. Most of the previous studies on spray cooling enhancement adopted high spray flow rates to strengthen forced convection for high critical heat flux (CHF), leading to a low heat transfer coefficient (HTC). Micro/nanostructured surfaces can enhance boiling, but bubbles inside the structures tend to form a vapor blanket, which can deteriorate heat transfer. This work demonstrates simultaneous enhancement of CHF and HTC in spray cooling by improving both evaporation and liquid film boiling on three-dimensional (3D) ordered hierarchical micro/nano-structured surface. The hierarchical micro/nano-structured surface is designed to coordinate the transport of spray droplets, capillary liquid films, and boiling bubbles to enhance spray cooling performance. Boiling inversion where superheat decreases with increasing heat flux is observed, leading to an ultra-high HTC due to the simultaneous promotion of bubble nucleation and evaporation. Unprecedented CHF is obtained by overcoming the liquid-vapor counterflow, i.e., synergistically facilitating bubble escape and liquid permeation. A record-breaking heat transfer performance of spray cooling is achieved with a maximum heat flux of 1273 W/cm2 and an HTC of 443.7 kW/(m2 K) over a 1 cm2 heating area.","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":" ","pages":"223-231"},"PeriodicalIF":18.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142589695","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tunable refractive index transparent conductive adhesives for efficient monolithic tandem solar cells. 用于高效单片串联太阳能电池的可调折射率透明导电胶。

IF 18.8 1区综合性期刊

Science Bulletin Pub Date : 2025-01-30 Epub Date: 2024-11-01 DOI: 10.1016/j.scib.2024.10.033

Xingliang Li, Sanlong Wang, Xiangqing Zhou, Yucheng Li, Hui Liu, Biao Shi, Qiang Sun, Ying Zhao, Xiaodan Zhang

引用次数: 0

The upper tropospheric-lower stratospheric ozone drives summer precipitation and wildfire changes in West Siberia. 对流层上部-平流层下部臭氧驱动西西伯利亚夏季降水和野火变化。

IF 18.8 1区综合性期刊

Science Bulletin Pub Date : 2025-01-30 Epub Date: 2024-11-13 DOI: 10.1016/j.scib.2024.11.016

Fei Xie, Yan Xia, Wenshou Tian, Martyn P Chipperfield, Wuhu Feng, Ke Gui, Yingli Niu, Na Liu, Yuanyuan Han

{"title":"The upper tropospheric-lower stratospheric ozone drives summer precipitation and wildfire changes in West Siberia.","authors":"Fei Xie, Yan Xia, Wenshou Tian, Martyn P Chipperfield, Wuhu Feng, Ke Gui, Yingli Niu, Na Liu, Yuanyuan Han","doi":"10.1016/j.scib.2024.11.016","DOIUrl":"10.1016/j.scib.2024.11.016","url":null,"abstract":"Siberian wildfires are pivotal in determining the carbon cycle and climate dynamics, exerting a profound impact on the ecosystems of the entire Arctic region. Over the past few decades, variations in summer precipitation in West Siberia have significantly influenced wildfire activity. This study analyzed precipitation trends in West Siberia from 1982 to 2021 using observations and transient simulations, uncovering a strong correlation between precipitation variability and ozone concentrations in the upper troposphere-lower stratosphere (UTLS). Heightened UTLS ozone levels warm the upper atmosphere over West Siberia during summer. This warming modifies the regional polar jet stream, intensifying its southern branch and weakening the northern one, leading to a southward shift in the jet stream. Consequently, cyclonic circulation anomalies emerge in the upper troposphere, characterized by a barotropic structure with unusual upward movements around 60°N. This upward motion triggers corresponding anomalies in zonal winds in the lower troposphere, fostering a low-pressure system at the surface. This atmospheric shift results in an influx of warm, moist air from the south and cold, dry air from the north into Siberia, enhancing cloud formation and precipitation. Notably, our analysis suggests that the rise in summer precipitation in West Siberia between 1993 and 2010 is linked to increased UTLS ozone concentrations during this period. Conversely, the decline in UTLS ozone since 2010 may increase the risk of wildfires by suppressing precipitation. Our findings underscore the pivotal role of stratospheric chemistry in shaping the regional climate and wildfire behavior.","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":" ","pages":"255-262"},"PeriodicalIF":18.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142695047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

In situ synthetic C encapsulated δ-MnO₂ with O vacancies: a versatile programming in bio-engineering. 原位合成 C 包裹 O 空位的 δ-MnO2：生物工程中的多功能编程。

IF 18.8 1区综合性期刊

Science Bulletin Pub Date : 2025-01-30 Epub Date: 2024-11-04 DOI: 10.1016/j.scib.2024.10.034

Wei Lv, Zilei Shen, Junlin Liu, Xudong Li, Fang Ding, Dongyue Zhang, Licheng Miao, Xuefeng Lyu, Ruijie Li, Miaomiao Wang, Yiming Li, Jingwen Meng, Chao Xu

{"title":"In situ synthetic C encapsulated δ-MnO2 with O vacancies: a versatile programming in bio-engineering.","authors":"Wei Lv, Zilei Shen, Junlin Liu, Xudong Li, Fang Ding, Dongyue Zhang, Licheng Miao, Xuefeng Lyu, Ruijie Li, Miaomiao Wang, Yiming Li, Jingwen Meng, Chao Xu","doi":"10.1016/j.scib.2024.10.034","DOIUrl":"10.1016/j.scib.2024.10.034","url":null,"abstract":"In this study, we successfully synthesized a δ-MnO2 cathode with O vacancies, encapsulated by C derived from pyromellitic acid, using a facile hydrothermal method followed by annealing in an Ar atmosphere. The cathode's structural stability and charge transfer kinetics are enhanced by inhibiting the formation of the by-product Zn4SO4(OH)6·4H2O, regulating the Mn valence state, and suppressing the Jahn-Teller effect through the synergy of C encapsulation and O vacancies. This results in remarkable electrochemical performance, including a large capacity of 421.2 mAh g-1 at 0.1 A g-1, a high specific energy density of 595.53 Wh kg-1, and exceptional long-cycle life stability with 90.88% over 4000 cycles at 10 A g-1, together with superior coulombic efficiency (∼100%) in pure ZnSO4 electrolyte. Moreover, the cathode materials demonstrate specific antitumor efficacy. In brief, this work introduces an in situ synthetic C encapsulated δ-MnO2 with O vacancies expected to be applied in both large-scale energy storage and biomedicine.","PeriodicalId":421,"journal":{"name":"Science Bulletin","volume":" ","pages":"203-211"},"PeriodicalIF":18.8,"publicationDate":"2025-01-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142643677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Alternative splicing drives the functional diversification of a bHLH transcription factor in the control of growth and drought tolerance in rice. 交替剪接驱动一种 bHLH 转录因子在控制水稻生长和耐旱性方面的功能多样化。

IF 18.8 1区综合性期刊

Science Bulletin Pub Date : 2025-01-30 Epub Date: 2024-06-06 DOI: 10.1016/j.scib.2024.06.001

Min Ning, Qinyan Li, Ya Wang, Qingmao Li, Yonghong Tao, Fan Zhang, Fengyi Hu, Liyu Huang

引用次数: 0

Advancing insights into calcium homeostasis and signaling in plant growth and resilience. 进一步深入了解植物生长和恢复能力中的钙平衡和信号传递。

IF 18.8 1区综合性期刊

Science Bulletin Pub Date : 2025-01-30 Epub Date: 2024-09-24 DOI: 10.1016/j.scib.2024.09.031

Songchong Lu, Yan Sun, Lichao Ma, Sheng Luan, Guofeng Yang

引用次数: 0

Rare tumor list provide vast opportunities for novel drug development in China. 罕见肿瘤清单为中国的新药研发提供了巨大机遇。

IF 18.8 1区综合性期刊

Science Bulletin Pub Date : 2025-01-30 Epub Date: 2024-11-13 DOI: 10.1016/j.scib.2024.11.017

Rongshou Zheng, Shuhang Wang, Guo Zhao, Wenqiang Wei, Ning Li

引用次数: 0