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Viability of all-solid-state lithium metal battery coupled with oxide solid-state electrolyte and high-capacity cathode

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Journal of Energy Chemistry 2024年第4期91卷 122-131页

作者： Xingxing Jiao Xieyu Xu Yongjing Wang Xuyang Wang Yaqi Chen Shizhao Xiong weiqing yang Zhongxiao Song yangyang Liu Research Institute of Frontier Science Southwest Jiaotong UniversityChengdu 610031SichuanChina State Key Laboratory for Mechanical Behavior of Materials Xi'an Jiaotong UniversityXi'an 710049ShaanxiChina Department of Physics Chalmers University of TechnologyGöteborgSE 41296Sweden

Owing to the utilization of lithium metal as anode with the ultrahigh theoretical capacity density of 3860 mA h g^(-1)and oxide-based ceramic solid-state electrolytes(SE),e.g.,garnet-type Li7La_(3)Zr_(2)O_(12)(LLZO),all-state-state lithium metal batteries(ASLMBs)have been widely accepted as the promising alternatives for providing the satisfactory energy density and ***,its applications are still challenged by plenty of technical and scientific *** this contribution,the co-sintering temperature at 500℃is proved as a compromise method to fabricate the composite cathode with structural integrity and declined capacity fading of LiNi_(0.5)Co_(0.2)Mn_(0.3)O_(2)(NCM).On the other hand,it tends to form weaker grain boundary(GB)inside polycrystalline LLZO at inadequate sintering temperature for LLZO,which can induce the intergranular failure of SE during the growth of Li filament inside the unavoidable defect on the interface of ***,increasing the strength of GB,refining the grain to 0.4μm,and precluding the interfacial defect are suggested to postpone the electro-chemo-mechanical failure of SE with weak ***,the advanced sintering techniques to lower the co-sintering temperature for both NCM-LLZO composite cathode and LLZO SE can be posted out to realize the viability of state-of-the-art ASLMBs with higher energy density as well as the guaranteed safety.

关键词： All-solid-state lithium metal battery LiNi_(0.5C)o_(0.2)Mn_(0.3)O_(2)-Li7La_(3)Zr_(2)O_(12)composite cathode Co-sintering Lithium metal anode Electro-chemo-mechanical failure

Tertiary orientation structures enhance the piezoelectricity of MXene/PVDF nanocomposite

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Nano Research 2024年第6期17卷 5629-5635页

作者： Yong Ao Tao yang Guo Tian Shenglong Wang Tianpei Xu Lin Deng Jieling Zhang Lihua Tang Weili Deng Long Jin weiqing yang Key Laboratory of Advanced Technologies of Materials(Ministry of Education) School of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China Department of Mechanical Engineering The University of AucklandAuckland 1010New Zealand Research Institute of Frontier Science Southwest Jiaotong UniversityChengdu 610031China

With the increasing demand for flexible piezoelectric sensor components,research on polyvinylidene fluoride(PVDF)based piezoelectric polymers is mounting ***,the low dipole polarization and disordered polarization direction presented in PVDF hinder further improvement of piezoelectric ***,we constructed an oriented tertiary structure,consisting of molecular chains,crystalline region,and MXene sheets,in MXene/PVDF nanocomposite via a temperature-pressure dual-field regulation *** highly oriented PVDF molecular chains form approximately 90%of theβ*** addition,the crystalline region structure with long-range orientation achieves out of plane polarization *** parallel orientation arrangement of MXene effectively enhances the piezoelectric performances of the nanocomposite,and the current output of the device increases by nearly 23 *** high output device is used to monitor exercise action,exploring the potential applications in wearable electronics.

关键词： flexible sensor piezoelectric MXene/polyvinylidene fluoride(PVDF)nanocomposite orientation structures

肌层浸润性膀胱癌中CD276的表达与临床病理特征和预后的相关性

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现代泌尿生殖肿瘤杂志 2024年第1期16卷 15-20页

作者：杨维清杨庞南昌市第一医院泌尿外科南昌330008

目的CD276的异常表达已被证实与肿瘤的发生有关。但其在肌层浸润性膀胱癌(MIBC)中的作用知之甚少。方法从癌症基因组图谱数据库中下载MIBC患者的相关数据,通过研究CD276在膀胱正常组织和肿瘤组织中的表达差异,同时评估临床变量与CD276... 详细信息

目的CD276的异常表达已被证实与肿瘤的发生有关。但其在肌层浸润性膀胱癌(MIBC)中的作用知之甚少。方法从癌症基因组图谱数据库中下载MIBC患者的相关数据,通过研究CD276在膀胱正常组织和肿瘤组织中的表达差异,同时评估临床变量与CD276之间的相关性来预测CD276与MIBC的生存预后。采用Cox回归分析和人类蛋白质图谱证明CD276是MIBC的独立预测因子。最后使用基因集富集分析(GSEA)数据集进行分析。结果MIBC的肿瘤分级、分期、发病年龄和N分期与CD276的高表达有关。CD276高表达患者预后较CD276低表达者差。单因素和多因素回归分析显示,CD276是MIBC的独立危险因素。GSEA富集分析发现CD276主要富集于肿瘤相关通路、膀胱癌、细胞黏附分子、ECM受体相互作用、Wnt信号通路、趋化因子信号通路以及MAPK信号通路。结论CD276在MIBC中高表达,其可作为MIBC预后的潜在独立分子标志物。

关键词：肌层浸润性膀胱癌 CD276 TCGA数据库预后

Erratum to:Tertiary orientation structures enhance the piezoelectricity of MXene/PVDF nanocomposite

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Nano Research 2024年第6期17卷 5761-5761页

In the first page of the original version of this paper,the Received date should be“10 October 2023”instead of“10 October 2013”.

关键词： Tertiary orientation MXene

1,8-萘酰亚胺衍生物的设计、合成及其对半胱氨酸的识别研究

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有机化学 2024年第1期44卷 180-194页

作者：杨维清葛宴兵陈元元刘萍付海燕马梦林西华大学理学院四川省不对称合成与手性技术重点实验室成都610039 四川大学化学学院教育部绿色化学重点实验室成都610064

巯基氨基酸水平异常与多种疾病相关,其检测仍存在一定的局限,研究检测巯基氨基酸的荧光探针具有一定的价值.以苊为原料合成了61个1,8-萘酰亚胺衍生物,研究了该类化合物的荧光性能及其作为半胱氨酸含量测定的荧光探针的可能性.紫外光谱... 详细信息

巯基氨基酸水平异常与多种疾病相关,其检测仍存在一定的局限,研究检测巯基氨基酸的荧光探针具有一定的价值.以苊为原料合成了61个1,8-萘酰亚胺衍生物,研究了该类化合物的荧光性能及其作为半胱氨酸含量测定的荧光探针的可能性.紫外光谱分析表明1,8-萘酰亚胺衍生物上N-取代基对最大吸收波长无明显影响;荧光光谱(FL)的性能测试显示硝基萘酰亚胺衍生物N-甲基-4-硝基-1,8-萘二甲酰亚胺(4a)~4-硝基-N-间氟苯基-1,8-萘二甲酰亚胺(4s)无荧光,氨基萘酰亚胺衍生物N-甲基-4-氨基-1,8-萘二甲酰亚胺(5a)~4-氨基-N-间氟苯基-1,8-萘二甲酰亚胺(5s)有强烈黄色荧光,而马来酰亚胺萘酰亚胺衍生物N-甲基-4-(1H-吡咯-2,5-二酮-1-基)-1,8-萘二甲酰亚胺(6a)~4-(1H-吡咯-2,5-二酮-1-基)-N-(间氟苯基)-1,8-萘二甲酰亚胺(6s)有微弱蓝色荧光,其中7个马来酰亚胺萘酰亚胺衍生物探针对半胱氨酸(Cys)溶液有荧光点亮效应.对7个探针加入21种其它氨基酸作为干扰项的测试显示探针对半胱氨酸检测有良好的选择性.研究了不同pH值下荧光强度,检测探针与半胱氨酸的响应时间,以及探针溶液荧光强度随氨基酸浓度的变化,其线性相关系数均达到0.95以上,探针对半胱氨酸的各项指标均表现出了较好的灵敏性.Hela细胞荧光成像验证了7个荧光探针应用于细胞内半胱氨酸的检测同样效果良好.

关键词：合成荧光探针半胱氨酸细胞成像 1,8-萘酰亚胺衍生物

Risk-Averse Two-Stage Distributionally Robust Economic Dispatch Model Under Uncertain Renewable Energy

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CSEE Journal of Power and Energy Systems 2024年第4期10卷 1514-1524页

作者： Ce yang weiqing Sun Jiannan yang Dong Han Department of Control Science and Engineering University of Shanghai for Science and TechnologyShanghai 200093China Department of Electrical Engineering University of Shanghai for Science and TechnologyShanghai 200093China School of Economics and Business Administration Chongqing UniversityChongqing 400044China

With the participation of large quantities of renewable energy in power system operations,their volatility and intermittence increases the difficulties and challenges of power system economic *** the uncertainty of renewable energy generation,based on the distributionally robust optimization method,a two-stage economic dispatch model is proposed to minimize the total operation *** this paper,it is assumed that the fluctuating of renewable power generation follows the unknown probability distribution that is restricted in an ambiguity set,which is established by utilizing the first-order moment information of available historical ***,the theory of conditional value-at-risk is introduced to transform the model into a tractable model,which we call robust counterpart *** on the stochastic dual dynamic programming method,an improved iterative algorithm is proposed to solve the robust counterpart ***,the convergence optimum can be obtained by the improved iterative algorithm,which performs a forward pass and backward pass repeatedly in each iterative ***,by comparing with other methods,the results on the modified IEEE 6-bus,118-bus,and 300-bus system show the effectiveness and advantages of the proposed model and method.

关键词： Energy and reserve co-dispatch distributionally robust conditional value-at-risk stochastic dual dynamic programming

正火冷却速度对20CrNiMo钢组织和性能的影响

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金属加工（热加工） 2024年第4期 1-4页

作者：杨维庆杨仲书张宏福杨超韩仁杰刘爱军安徽聚力石油钻采设备科技有限公司安徽池州247100 合肥工业大学材料学院安徽合肥230009

利用扫描电镜、金相显微镜和硬度计等检测手段研究不同正火冷却速度对20CrNiMo钢组织和性能的影响。结果表明:经炉冷的20CrNiMo钢组织中主要为珠光体和铁素体;经风冷的20CrNiMo钢组织中主要为珠光体和铁素体,此外还发现少量的马氏体;经... 详细信息

利用扫描电镜、金相显微镜和硬度计等检测手段研究不同正火冷却速度对20CrNiMo钢组织和性能的影响。结果表明:经炉冷的20CrNiMo钢组织中主要为珠光体和铁素体;经风冷的20CrNiMo钢组织中主要为珠光体和铁素体,此外还发现少量的马氏体;经空冷+风冷的20CrNiMo钢组织中除了珠光体和铁素体外,还发现一定量的马氏体。随着正火冷却速度的增加,容易诱发马氏体相变。此外还发现,随着正火冷却速度的增加,20CrNiMo钢的洛氏硬度基本保持平稳,显微硬度部分区域有所上升,这与组织变化趋势相一致。

关键词：正火带状组织冷却速度力学性能

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不同层数石墨烯的光热显微成像

物理化学学报 2024年第5期40卷 55-59页

作者：都安邦王源璠魏志弘张东旭李理杨炜青孙千璐赵丽丽徐伟高田玉玺南京大学化学化工学院介观化学教育部重点实验室江苏省机动车排放控制重点实验室南京210023

二维层状材料(石墨烯、二维过渡金属硫族化合物等)因具有独特的物理性质,引起了研究学者们的广泛关注,极大促进了化学、材料科学和凝聚态物理学的发展。开发能够探究层状材料中层数依赖的光学、电学、力学和热学特性的新技术一直是二维... 详细信息

二维层状材料(石墨烯、二维过渡金属硫族化合物等)因具有独特的物理性质,引起了研究学者们的广泛关注,极大促进了化学、材料科学和凝聚态物理学的发展。开发能够探究层状材料中层数依赖的光学、电学、力学和热学特性的新技术一直是二维材料领域最活跃的研究方向之一。光热显微镜利用光激发后非辐射跃迁产生的热效应,可实现在单个颗粒或单分子水平上成像与检测,并实时捕捉微观尺度热弛豫和热传输过程。本文对比研究了石墨烯薄片在不同光热介质(空气、甘油)中随厚度变化的光热特性,发现了在两种介质中光热信号强度与样品厚度之间均存在非线性依赖关系。相比于空气介质,甘油介质中光热信号强度具有更高的对比度,且随着厚度增加表现出非单调变化。该研究提供了不同介质环境中不同层数石墨烯光吸收和热弛豫特征的细节信息,相关研究结论将为层状材料及其异质结的热学性质研究提供依据。

关键词：石墨烯光热显微成像层数依赖光吸收非辐射弛豫

Gradient CNT/PVDF piezoelectric composite with enhanced force-electric coupling for soccer training

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Nano Research 2023年第8期16卷 11312-11319页

作者： Wanghong Zeng Weili Deng Tao yang Shenglong Wang Yue Sun Jieling Zhang Xiarong Ren Long Jin Lihua Tang weiqing yang Key Laboratory of Advanced Technologies of Materials(Ministry of Education) School of Materials Science and EngineeringSouthwest Jiaotong UniversityChengdu 610031China Department of Mechanical and Mechatronics Engineering University of AucklandAuckland 1010New Zealand Research Institute of Frontier Science Southwest Jiaotong UniversityChengdu 610031China

Real-time monitoring of ball–shoe interactions can provide essential information for high-quality instruction in personalized soccer training,yet existing monitoring systems struggle to reflect specific forces,loci,and durations of ***,we design a self-powered piezoelectric sensor constructed by the gradient carbon nanotube/polyvinylidene fluoride(CNT/PVDF)composite to monitor the interactions between the ball and the ***-dimensional Raman mapping demonstrates the gradient structure of CNT/PVDF prepared by programmable electrospinning combined with a hot *** from the synergistic effect of local polarization caused by the enrichment of CNT and the reduced diffusion of silver patterns in gradient structure,the as-prepared composite exhibits enhanced force-electric coupling with an excellent sensitivity of 80 mV/N and durability over 15,000 *** this basis,we conformally attach a 3×3 sensor array to a soccer shoe,enabling real-time acquisition of kick position and contact force,which could provide quantitative assessment and personalize guidance for the training of soccer *** self-powered piezoelectric sensor network system offers a promising paradigm for wearable monitoring under strong impact forces.

关键词： mechanical and electrical performance pressure sensor carbon nanotube/polyvinylidene fluoride(CNT/PVDF)composite soccer training