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High temperature liquid shock manufacturing of RuNi catalysts for hydrogen evolution reaction

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Progress in Natural Science:Materials International 2024年第5期34卷 985-989页

作者： Liming Li Peng Kang Donghui Feng Yuguang Zhang Hangxing Ren yanchang liu Xiaoya Cui School of Chemical Engineering and Technology Tianjin University Purification Equipment Research Institute of CSSC Handan PERIC Hydrogen Technologies Co. Ltd School of Materials Science and Engineering Advanced Research Institute of Multidisciplinary Science Beijing Institute of Technology National Laboratory of Mineral Materials School of Material Sciences and Technology China University of Geosciences

Rational design and production of materials for highly effective and environmental-friendly electrocatalytic hydrogen evolution reaction（HER） play a pivotal role in advancing renewable energy utilization. Structural engineering of noble metal nanomaterials can significantly boost catalytic performance through atomic rearrangement, electronic structure modification and surface reactivity modulation. Here, RuNi alloy is synthesized using a novel high temperature liquid shock method（HTLS） with instant Joule heating treatment at 1073 K under the mixed atmosphere of Argon（Ar） and CO. The synthesis process involves an aqueous solution containing metal precursors, capping agents, reductant agents and carbon black. Particularly, the as-prepared RuNi-HTS nanostructures with hexagonal close-packed（hcp） phase demonstrate impressive electrocatalytic HER activity in alkaline conditions, requiring only 28 mV of overpotentials at a current density of 10 mA cm-2. Note that the Tafel slope is 159.2 mV dec-1. Furthermore, this versatile HTLS method can be extended to synthesize other catalysts, including Ru-HTS, PtRu, and PtZn, all of which show commendable performance for HER as well. This study lays the groundwork for the strategic design and high-throughput synthesis of novel materials with finetuned structure and refined size, enabling highly efficient and environmental-friendly electrocatalysis.

关键词： High temperature liquid shock method Hydrogen evolution reaction Joule heating RuNi alloy

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既得利益集团的形成条件探析

北京行政学院学报 2005年第2期 18-22页

作者：刘彦昌宁波行政学院浙江宁波315012

既得利益集团的形成是一个复杂的过程,至少离不开5个要素,同时还要取决于这5个要素的发育和关联程度。主体来源和利益目标是两个必备前提,官员政治道德逆转是形成的重要环节,制度缺陷和体制漏洞为其形成打开了通道,涉及官员的利益调整... 详细信息

既得利益集团的形成是一个复杂的过程,至少离不开5个要素,同时还要取决于这5个要素的发育和关联程度。主体来源和利益目标是两个必备前提,官员政治道德逆转是形成的重要环节,制度缺陷和体制漏洞为其形成打开了通道,涉及官员的利益调整是主要契机,而官员的职业化则是孵化器。

关键词：既得利益集团形成条件关联程度利益目标重要环节政治道德制度缺陷利益调整官员孵化器职业化主体

Secure Range-Dependent Localization in Wireless Sensor Networks

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Secure Range-Dependent Localization in Wireless Sensor Netwo...

2011 International Conference on Advanced Materials and Computer Science(ICAMCS 2011)

作者： Jia Zhang Haiyan Zhang Jinna Lv yanchang liu Henan Institute of Science and Technology

In many applications of wireless sensor network（WSN）, it is essential to ensure that sensors can determine their location, even in the presence of malicious adversaries. However, almost all the localization algorithms need the location information of reference nodes to locate the unknown nodes. When the location information is tempered by the attacks, the accuracy of these algorithms will degrade badly. We present a novel mechanism for secure localization. The mechanism aims to filter out malicious reference signals on the basis of the normal distribution trait among multiple reference signals. This will ensure each node to obtain correct information about its position in the presence of attackers. In this paper, a simulation circumstance which might be attacked is constructed to compare the improved algorithm with original one. The experiment results demonstrate that the proposed mechanism can effectively survive malicious attacks.

关键词： wireless sensor networks Metropolis-Hasting algorithm range-dependent localization Centroid

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党内基层民主动力构成及其良性运行

中共中央党校学报 2009年第5期13卷 46-48页

作者：刘彦昌中共宁波市委党校浙江宁波315012

党内基层民主建设离不开强健动力的推进,广大党员、党组织负责人和党的理论工作者是构成动力的主体,协调互动是其基本要求;动力具有运行的不稳定性和发生的不同步性,从积极方面审视,其隐含的是可培育性,这使得党内民主动力可以通过培育... 详细信息

党内基层民主建设离不开强健动力的推进,广大党员、党组织负责人和党的理论工作者是构成动力的主体,协调互动是其基本要求;动力具有运行的不稳定性和发生的不同步性,从积极方面审视,其隐含的是可培育性,这使得党内民主动力可以通过培育,达到强健状态,确保党内民主有序推进。

关键词：党内民主推进动力运行机理

Continuous high-temperature rapid nanomanufacturing of electrocatalysts

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Nano Research 2024年第1期18卷 225-235页

作者： Xiaoyang Wang Ziyi Luo Baihua Cui Ziqi Fu yanchang liu Weidi liu Jia Ding Jianrong Zeng Yanan Chen Wenbin Hu 1School of Materials Science and Engineering Tianjin University Tianjin 300350 China 2Australian Institute for Bioengineering and Nanotechnology The University of Queensland St. Lucia Brisbane 4072 Australia 4Shanghai Institute of Applied Physics Chinese Academy of Sciences Shanghai 201800 China 3Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Shanghai 201204 China

Encapsulating metal nanoparticles in carbon shells (Metal@C) to enhance catalytic activity and stability has been certified feasible. However, most existing methods for preparing Metal@C are complex, time-consuming, and lack of scalability. In this study, a novel method that couples the high-temperature shock (HTS) with ultrasonic spray pyrolysis is reported, which can realize facile and scalable production of various Metal@C through the pyrolysis of glucose and metal chloride mixtures. The proposed HTS ultrasonic spray pyrolysis offers several advantages, including compact size, short reaction time (~ 120 ms), and uniform heating. Taking the Ni@C-40 nanocomposite as an example, the ultrasmall Ni nanoparticles (~ 10 nm) with thin carbon protective shells (~ 2 nm) are uniformly dispersed in the carbon matrix and applied for oxygen evolution reaction (OER) in alkaline media. The Ni@C-40 optimized by tuning the thickness of carbon shell exhibits significantly enhanced OER activity with low overpotential of 242 mV at 10 mA·cm−2 and stability, which is attributed to the optimized interactions between Ni nanoparticles and carbon shells. This method also shows promise for continuous pyrolysis synthesis of various extreme materials at ultra-high temperatures using alternative electric heating materials.

关键词： ultrasonic spray pyrolysis high-temperature shock carbon shell oxygen evolution reaction Metal@C nanocomposite

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发展基层党内民主营造党内和谐局面

中国党政干部论坛 2007年第1期218卷 9-11页

作者：刘彦昌中共宁波市委党校

营造党内和谐局面,必须以发展党内民主为基础。当前主要应从培育基层党内民主的推进动力入手,在发展基层党内民主的过程中营造健康、持久的党内和谐局面。

关键词：党内和谐基层民主推进动力

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在强化党员意识方面下功夫

中国党政干部论坛 2006年第3期 13-14页

作者：刘彦昌中共宁波市委党校

强化党员的党员意识,必须立足于党员的自觉。在实践中自觉加强党性修养,不断强化党员意识。党组织要为其提供必要的契机和载体。

关键词：党员意识重要性弱化趋势强化途径

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试论东夷文化和日本考古学文化的关系

华夏考古 2005年第4期 60-67,77页

作者：刘延常孙英林山东省文物考古研究所山东济南250012 新泰市博物馆山东新泰271200

本文的东夷文化是指以山东地区为中心的海岱地区自新石器时代至周代的考古学文化,它有产生、发展、繁荣和消亡的过程,同时又有融合和传播的过程。在融合、传播的过程中,对日本绳纹文化、弥生文化遗存,无论遗址、聚落、墓葬形制、稻作农... 详细信息

本文的东夷文化是指以山东地区为中心的海岱地区自新石器时代至周代的考古学文化,它有产生、发展、繁荣和消亡的过程,同时又有融合和传播的过程。在融合、传播的过程中,对日本绳纹文化、弥生文化遗存,无论遗址、聚落、墓葬形制、稻作农业、习俗诸方面,还是制陶工艺、器表装饰风格以及陶器、石器的形制等方面都与东夷文化有密切关系。东夷文化和日本考古学文化都是世界东方文化的重要组成部分,需要共同深入研究。

关键词：东夷文化日本考古学文化比较研究

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冷喂料橡胶挤出机喂料过程动力学

高分子材料科学与工程 2023年第3期39卷 112-117,126页

作者：胡雪华刘彦昌潘弋人青岛科技大学机电工程学院高分子材料先进制造山东省重点实验室山东青岛266061

文中将冷喂料挤出机喂料楔形间隙简化为线性楔形区域,采用Bird-Carreau本构模型,对喂料过程进行动力学模拟,得到了沿楔形方向的压力分布以及在楔形区横截面上的压力和速度分布的图像。将模拟结果与前期试验数据以及基于牛顿本构模型的... 详细信息

文中将冷喂料挤出机喂料楔形间隙简化为线性楔形区域,采用Bird-Carreau本构模型,对喂料过程进行动力学模拟,得到了沿楔形方向的压力分布以及在楔形区横截面上的压力和速度分布的图像。将模拟结果与前期试验数据以及基于牛顿本构模型的计算结果相对比。通过对比发现,它们都有相似的变化趋势。沿楔形方向压力呈现的模拟结果小于计算结果而大于试验数据,并且在楔形区入口位置,模拟结果和试验数据都有压力值;在楔形区横截面上的压力和速度分布,模拟结果小于计算结果。通过研究表明,已有的基于牛顿本构模型的计算方法,尽管可以粗略地分析喂料过程动力学,但是更精确的喂料过程动力学模型必须考虑胶料非牛顿行为和在机筒表面合适边界条件。

关键词：冷喂料挤出机喂料过程动力学