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《CoP28气候与健康阿联酋宣言》解读

科学通报 2024年第15期69卷 2025-2030页

作者：蔡闻佳张诗卉张弛戴凡陆波罗勇宫鹏清华大学地球系统科学系清华大学全球变化研究院东亚迁徙鸟类与栖息地生态学教育部野外科学观测研究站北京100084 北京理工大学管理与经济学院北京100081 香港大学地球科学系和地理系气候与碳中和研究院中国香港999077 国家气候中心气候变化影响适应室北京100081

《联合国气候变化框架公约》缔约方会议第28届会议(下文简称CoP28,缔约方会议简称CoP)将2023年12月3日设为CoP历史上首个“健康日”,并在当晚举行的首次“气候-健康部长级对话”上正式公布了《CoP28气候与健康阿联酋宣言》(CoP28 UAE De... 详细信息

《联合国气候变化框架公约》缔约方会议第28届会议(下文简称CoP28,缔约方会议简称CoP)将2023年12月3日设为CoP历史上首个“健康日”,并在当晚举行的首次“气候-健康部长级对话”上正式公布了《CoP28气候与健康阿联酋宣言》(CoP28 UAE Declaration on Climate and Health,以下简称《宣言》,https://***/en/CoP28-uae-declarationon-climate-and-health)[1].

关键词：《联合国气候变化框架公约》缔约方会议阿联酋 .com CoP 宣言

Interface engineering of Fe-Co_(3)N/CoP composite with N-doped C by using soybean:Fabrication of efficient electrocatalysts for oxygen evolution reaction

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Carbon Resources Conversion 2023年第2期6卷 98-105页

作者： Longqing Gao Xiumin Li Chao Tang Tianshuo Xie Zhengkun Xie Haimei Li Guoqing Guan Jie Liu Keyong Tang School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001PR China College of Chemistry Zhengzhou UniversityZhengzhou 450001PR China Energy Conversion Engineering Laboratory Institute of Regional InnovationHirosaki University3-BunkyochoHirosaki 036-8561Japan

Soybean can serve as an efficient carbon and nitrogen source for in-situ fabrication of efficient composite electrocatalysts with conductive nitrogen-doped carbon(N-C)material.In this study,the iron-doped cobalt nitride/phosphide(Fe-Co_(3)N/CoP)nanosheet was composited with a conductive N-C material by using soybean as C and N source,as well as NH3 as additional nitrogen source.During the nitridation process of Fe-Co_(3)N,N-C bond was formed as a newly generated Co(Fe)-N-C active sites.Therefore,it fabricates a good microsCoPic contact interface between the catalyst and carbon material for charge transfer.Besides,the introduction of Fe-CoP by partially phosphating Fe-Co_(3)N further improved the OER activity due to the high catalytic activity of Co sites with high valence state.As a result,the obtained electrocatalyst exhibited overpotentials as low as 285 and 390 mV for supporting 10 and 100 mA/cm􀀀2 current densities.This work indicates that the design of materials with good interfaces could be an effective approach for the preparation of electrocatalysts for water electrolysis.

关键词： Water electrolysis Oxygen evolution reaction Co_(3)N CoP Co-N-C Soybean template

Cobalt phosphide-based composites as anodes for lithium-ion batteries:From mechanism,preparation to performance

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Particuology 2024年第5期88卷 11-31页

作者： Bo Lan Yishan Wang Jialei Lu Dongdong Liu Chuncheng Wei Xueqian Zhang Xiaoxiao Huang Guangwu Wen School of Materials Science and Engineering Shandong University of TechnologyZibo255000China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin150001China School of Materials Science and Engineering Harbin Institute of TechnologyWeihai264209China

With the further requirements of electronic products and powered vehicles,the development of a new generation with low-voltage and high-capacity anode materials is crucial for lithium-ion batteries(LIBs).Transition metal phosphides,especially cobalt phosphide(CoP)composites,have become a research hotspot for LIBs anode materials in recent years due to their high theoretical specific capacity,low polarization,and suitable voltage plateau.This review first systematically discusses the lithium storage mechanism and preparation methods of CoP in current research.Subsequently,the applications of CoP anode materials in LIBs are categorically reviewed,including the composites of CoP with various types of carbon materials and heterostructures.Finally,the challenges and future development directions of CoP anode materials are summarized to provide guidance for further improving the lithium storage performance of CoP and its practical applications.

关键词： CoP Composites Preparation Anodes Lithium-ion batteries

Thermodynamic Analysis on the Performance of Barocaloric Refrigeration Systems Using Neopentyl Glycol as the Refrigerant

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Journal of Thermal Science 2023年第3期32卷 1063-1073页

作者： DAI Zhaofeng SHE Xiaohui WANG Chen DING Yulong ZHANG Xiaosong ZHAO Dongliang School of Energy&Environment Southeast UniversityNanjing 210096China Birmingham Centre for Energy Storage School of Chemical EngineeringUniversity of BirminghamB152TTUK School of Mechanical Engineering Shijiazhuang Tiedao UniversityShijiazhuang 050043China Engineering Research Centre of Building Equipment Energyand EnvironmentMinistry of EducationNanjing 210096China

Barocaloric refrigeration is regarded as one of the next-generation alternative refrigeration technology due to its environmental friendliness.In recent years,many researchers have been devoted to finding materials with colossal barocaloric effects,while neglecting the research on barocaloric refrigeration devices and thermodynamic cycles.Neopentyl glycol is regarded as one of the potential refrigerants for barocaloric refrigeration due to its giant isothermal entropy changes and relatively low operating pressure.To evaluate the performance of the barocaloric system using Neopentyl glycol,for the first time,this study establishes a thermodynamic cycle based on the metastable temperature-entropy diagram.The performance of the proposed system is investigated from the aspects of irreversibility,operating temperature range,and operating pressure,and optimized with finite-rate heat transfer.The guidance for the optimal design of the system is given by revealing the effect of the irreversibility in two isobaric processes.The results show that a CoP of 8.8 can be achieved at a temperature span of 10 K when the system fully uses the phase transition region of Neopentyl glycol,while a CoP of 3 can be achieved at a temperature span of 10 K when the system operates at room temperature.Furthermore,this study also shows that the system performance can be further improved through the modification of Neopentyl glycol,and some future development guidance is provided.

关键词： barocaloric refrigeration neopentyl glycol thermodynamic analysis CoP refrigeration capacity

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风热机组系统建模及仿真分析

工程热物理学报 2023年第1期44卷 71-77页

作者：钱婧孙香宇廖猜猜钟晓晖中国科学院工程热物理研究所北京100190 中国科学院风能利用重点实验室北京100190 中国科学院大学北京100190 中国科学院洁净能源创新研究院大连116023

根据热泵和风力机组运行特点,建立给定假设条件下的蒸发器、冷凝器、压缩机、风力机及传动链数学模型,在MATLAB/Simulink中建立相应的仿真模块,探讨了此模型与风热机组领域其他类似研究;并在稳态风和变风速工况下,将仿真模型和同条件下... 详细信息

根据热泵和风力机组运行特点,建立给定假设条件下的蒸发器、冷凝器、压缩机、风力机及传动链数学模型,在MATLAB/Simulink中建立相应的仿真模块,探讨了此模型与风热机组领域其他类似研究;并在稳态风和变风速工况下,将仿真模型和同条件下的实验系统的制热量和CoP进行了对比,对比结果表明,风热机组参数实验值的波动范围较仿真值偏小,在不同风速下实验值和仿真值的相对误差也不尽相同,但均在可接受范围内,证明了模型的可靠性。

关键词：分散式能源风热机组制热量 CoP

基于足部生物力学原理的足底分布力测量方法及系统研制

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仪器仪表学报 2023年第3期44卷 182-190页

作者：陈宝亮马小凡肖飞云陆益民王勇合肥工业大学机械工程学院合肥230009

依据足部生物力学原理,提出一种足底三分区测量分布力方法,并研制了相应的分布力测力台(DFP)系统。随机选取27名青年人和40名老年人进行双足睁眼站立-双足闭眼站立-单足睁眼站立连续过程的姿势稳定性测评,求解右足3个分区的压力中心(CoP... 详细信息

依据足部生物力学原理,提出一种足底三分区测量分布力方法,并研制了相应的分布力测力台(DFP)系统。随机选取27名青年人和40名老年人进行双足睁眼站立-双足闭眼站立-单足睁眼站立连续过程的姿势稳定性测评,求解右足3个分区的压力中心(CoP)轨迹范围(95%置信圆面积)和3个站立阶段的CoP轨迹的位置偏移量作为分析足底支撑特点的参数。青老年人组的足底3个分区中CoP轨迹的最大范围值分别为27.00~227.46 mm2与116.35~387.22 mm2;前后侧的最大。偏移量分别为6.07±3.13 mm与5.88±3.21 mm;内外侧的最大。偏移量分别为6.51±2.29 mm与6.77±2.34 mm。结果表明,3个分区的CoP轨迹在双足站立和单足站立姿态下均集中在跟骨底端和跖趾关节横弓的内外侧两个端点上,位置受姿势稳定性差异条件的影响小。

关键词：分布力分区测力台 CoP

Thermodynamic Analysis and Experimental Research of Water-Cooled Small Space Thermoelectric Air-Conditioner

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Journal of Thermal Science 2022年第2期31卷 390-406页

作者： JIANG Fan MENG Fankai CHEN Lin’gen CHEN Zhaojun Institute of Thermal Science and Power Engineering Wuhan Institute of TechnologyWuhan 430205China School of Mechanical&Electrical Engineering Wuhan Institute of TechnologyWuhan 430205China College of Power Engineering Naval University of EngineeringWuhan 430033China

This paper aims to find a more general analysis method for the refrigeration performance,and to design a high efficiency modular cooling structure of water-cooled plate.A new analysis method,namely current and refrigeration rate density analysis,is proposed.The general refrigeration performance calculation equations are obtained.A finite-time thermodynamic model of the thermoelectric device is established considering Thomson effect.The basic structure of water-cooled thermoelectric air-conditioner is designed and the specific calculation method is given.The influences of input current density,filling factor and heat transfer conditions on refrigeration performance of the thermoelectric air-conditioner are analyzed,which is compared with refrigeration performance of air-cooled thermoelectric air-conditioner.The results show that the maximum refrigeration rate density of the water-cooled thermoelectric air-conditioner is 8.65 k W/m^(2),and the maximum coefficient of performance(CoP)is 2.27 in the case of the cooling temperature differenceΔT=5 K.Compared withΔT=5 K,the maximum refrigeration rate density and the maximum CoP ofΔT=15 K decreases by 27.98%and 76.65%,respectively.At the filling factorθ=0.43,the refrigeration rate density and CoP are 2.57 k W/m~2 and 1.24,respectively.The experimental device of thermoelectric air-conditioner is established to verify the model.The experimental results show that the maximum value of input current and CoP is 4 A and 0.95 with the efficient water-cooling method,respectively.The experimental data coincides with the theoretical calculation,which shows the validity of the analysis method and cooling method.

关键词： thermoelectric air-conditioner refrigeration rate density CoP finite-time thermodynamics non-equilibrium thermodynamics performance optimization

一种新型R134a替代工质的热泵季节性能分析

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工程热物理学报 2022年第12期43卷 3177-3183页

作者：刘兵杨昭吕子建陈裕博张勇贾梦楠天津大学中低温热能高效利用教育部重点实验室天津300350

制冷剂替代是实现“双碳”目标的有效途径之一。本文提出一种可替换R134a的低GWP制冷剂并命名为RGT2,通过搭建的水源热泵系统,综合研究了RGT2和R134a在不同工况下的系统制热性能。结合天津地区气象参数和制热性能实验对比两种工质的供... 详细信息

制冷剂替代是实现“双碳”目标的有效途径之一。本文提出一种可替换R134a的低GWP制冷剂并命名为RGT2,通过搭建的水源热泵系统,综合研究了RGT2和R134a在不同工况下的系统制热性能。结合天津地区气象参数和制热性能实验对比两种工质的供暖季节能效。从实验和理论角度,验证了RGT2工质替代R134a的可行性。研究结果表明:相同工况下,RGT2的系统制热量较R134a高2.2%,系统CoP较R134a低3.5%,RGT2整体表现出与R134a相似的制热性能;在整个供暖季节,RGT2的系统供暖能效系数较R134a仅差1.9%,而充注RGT2的热泵系统热负荷始终高于充注R134a的热泵系统。从制热性能和环境友好角度分析,RGT2可作为R134a热泵系统的理想替代工质。

关键词： R134a 热泵性能季节能效 CoP

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跨临界CO_(2)热泵空间应用研究展望

中国空间科学技术 2024年第1期44卷 23-33页

作者：牛子天付振东苗建印杨琦吴琪杨乐北京空间飞行器总体设计部北京100094 空间热控技术北京市重点实验室北京100094

随着中国深空探测事业的发展,建立月球基地成为未来载人航天活动的趋势,采用基于跨临界CO_(2)热泵的热控系统可以实现高效散热,具备降低辐射器面积和热控系统重量的应用潜力。对跨临界CO_(2)热泵空间应用具备的优势进行了总结,包括实现... 详细信息

随着中国深空探测事业的发展,建立月球基地成为未来载人航天活动的趋势,采用基于跨临界CO_(2)热泵的热控系统可以实现高效散热,具备降低辐射器面积和热控系统重量的应用潜力。对跨临界CO_(2)热泵空间应用具备的优势进行了总结,包括实现辐射器高效散热、热泵系统更高性能系数、压缩机体积更小等。同时指出了跨临界CO_(2)热泵空间应用存在的难题,包括现有热力学模型无法适应空间应用、热泵在低/微重力下油气分离效率低等。基于现存的难题,提出了未来的研究重点,以指导跨临界CO_(2)热泵的后续研究及空间应用。

关键词：跨临界CO_(2)热泵月球基地 CoP 航天器热控制油气分离低/微重力