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Optimising multi-vent module-based adaptive ventilation using a novel parameter for improved indoor air quality and health protection

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Building Simulation 2024年第1期17卷 113-130页

作者： Haotian Zhang Xiaoxiao Ding Weirong Zhang Weijia Zhang Yingli Xuan Key Laboratory of green Built environment and energy Efficient Technology Beijing University of TechnologyBeijing 100124China department ofArchitecture TokyoPolytechnic UniversityTokyoJapan

As infectious respiratory diseases are highly transmissible through the air,researchers have improved traditional total volume air distribution systems to reduce infection ***-vent module-based adaptive ventilation(MAV)is a novel ventilation type that facilitates the switching of inlets and outlets to suit different indoor scenarios without changing ductwork ***,little research has evaluated MAV module sizing and air velocity selection,both related to MAV system efficiency in removing contaminants and the corresponding level of protection for occupants in the ventilated ***,the module-source offset ratio(MSOR)is proposed,based on the MAV module size and its distance from an infected occupant,to inform selection of optimal MAV module *** fluid dynamics simulations illustrated contaminant distribution in a two-person MAV equipped *** phase particles modelled respiratory contaminants from the infected occupant,and contaminant concentration distributions were compared under four MAV air distribution layouts,three air velocities,and three module sizes considered using the *** indicate that lower air velocities favour rising contaminant levels,provided the ventilation rate is *** contaminant discharge can be achieved when the line of outlets is located directly above the infected *** this parameter to guide MAV system design,85.7% of contaminants may be rendered harmless to the human body within 120 s using the default air vent layout.A more appropriate supply air velocity and air vent layout increases this value to 91.4%.These results are expected to inform the deployment of MAV systems to reduce airborne infection risk.

关键词： multi-vent module-based adaptive ventilation computational fluid dynamics indoor air quality infection control

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Alloy as advanced catalysts for electrocatalysis:From materials design to applications

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Chinese Chemical Letters 2024年第6期35卷 104-122页

作者： Pingfan Zhang Shihuan Hong Ning Song Zhonghui Han Fei Ge Gang Dai Hongjun Dong Chunmei Li advanced Chemical Engineering Laboratory of green Materials and energy of Jiangsu Province Institute of Green Chemistry and Chemical TechnologySchool of Chemistry and Chemical EngineeringJiangsu UniversityZhenjiang 212013China Daqo Group Co.Ltd. Zhenjiang 212221China Key Laboratory of Groundwater Resources and environment Ministry of EducationJilin Provincial Key Laboratory of Water Resource and EnvironmentCollege of New Energy and EnvironmentJilin UniversityChangchun 130021China

With the deep integration of electrochemical research with energy,environment,catalysis,and other fields,more and more new electrochemical catalytic reactions have entered our research *** catalysts have recently emerged as a new type of nanomaterial due to the rapid development of kinetic controlled synthesis *** materials offer several advantages over monometallic catalysts,including larger element combinations,complex geometries,bifunctional sites,and reduced use of precious *** paper provides a review of alloy electrocatalysts that are designed and prepared specifically for electrocatalytic *** use of alloy materials in electrocatalyst design is also discussed,highlighting their widespread application in this ***,various synthesis methods and synthesis mechanisms are systematically *** that,by correlating the properties of materials with the structure,relevant strategies toward advanced alloy electrocatalysts including composition regulation,size,morphology,surface engineering,defect engineering,interface engineering and strain engineering are *** addition,the important electrocatalytic applications and mechanisms of alloy electrocatalysts are described and ***,the current challenges and prospects regarding the development of alloy nanomaterials are *** review serves as a springboard from a fundamental understanding of alloy structural dynamics to design and various applications of electrocatalysts,particularly in energy and environmental sustainability.

关键词： Alloy Nanomaterial Electrocatalyst Materials design Electrocatalysis

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Amorphous BaTiO3 Electron Transport Layer for Thermal Equilibrium-Governed γ-CsPbI3 Perovskite Solar Cell with High Power Conversion Efficiency of 19.96%

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energy & environmental Materials 2024年第3期7卷 295-306页

作者： Changhyun Lee Chanyong Lee Kyungjin Chae Taemin Kim Seaeun Park Yohan Ko Yongseok Jun department of energy environment Policy and Technology Graduate School of Energy Environment(KU-KIST Green School)Korea University Nano Electronic Materials and Components Research Center Gumi Electronics and Information Technology Research Institute (GERI) energy Materials Research Center Clean Energy Research DivisionKorea Institute of Science and Technology (KIST)

Compared to organic-inorganic hybrid perovskites,the cesium-based allinorganic lead halide perovskite （CsPbI3） is a promising light absorber for perovskite solar cells owing to its higher resistance to thermal ***,additional research is required to reduce the nonradiative recombination to realize the full potential of ***,the diffusion of Cs ions participating in ion exchange is proposed to be an important factor responsible for the bulk defects in γ-*** based on first-principles density functional theory reveal that the [PbI6]4-octahedral tilt modifies the perovskite crystallographic properties in γ-CsPbI3,leading to alterations in its bandgap and crystal *** addition,by substituting amorphous barium titanium oxide （a-BaTiO3） for TiO2as the electron transport layer,interfacial defects caused by imperfect energy levels between the electron transport layer and perovskite are ***-resolution transmission electron microscopy and electron energy loss spectroscopy demonstrate that a-BaTiO3forms entirely as a single phase,as opposed to Ba-doped TiO2hybrid nanoclusters or separate domains of TiO2and ***,inorganic perovskite solar cells based on the a-BaTiO3electron transport layer achieved a power conversion efficiency of 19.96%.

关键词： amorphous BaTiO3 electron transport layer moisture γ-CsPbI3

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Neutral color and self-healable electrochromic system based on CuI/Cu and I_(3)^(-)/I^(-)conversions

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Nano Research 2024年第5期17卷 4437-4443页

作者： Junsen Zhong Bingkun Huang Kunjie Yang Zuju Ma Lingyu Du Ning Luo Fengjiao Tang Chuanxin Hou Fuyi Jiang Litao Kang College of environment and Materials Engineering Yantai UniversityYantai 264005China School of energy and Power Engineering Shandong UniversityJinan 250061China Shandong Laboratory of advanced Materials and green Manufacturing(Yantai) Yantai 264001China

The electrochromic(EC)mechanisms of inorganic materials are usually based on reversible cation insertion/extraction or metal deposition/dissolution,which are plagued by ion trapping and dendrite growth,*** this paper,a novel conversion-type electrochromic mechanism is proposed,by making good use of the CuI/Cu redox *** CuI-based electrochromic system shows a neutral color switching from transparent and dim *** simply increasing the bleaching voltage,I_(3)^(-)/I^(-)redox couple can be further *** generated I_(3)^(-)will readily react with Cu,effectively improving the conversion reversibility and thereby rejuvenating the degraded electrochromic *** to the well-designed electrode and the self-healing ability,this conversion electrochromic system achieves rapid response times(tcoloring:23 s,tbleaching:6 s),decant optical modulation amplitude(26.4%),high coloration efficiency(86.15 cm^(2)·C^(-1)),admirable cyclic durability(without performance degradation after 480 cycles)and excellent optical memory ability(transmittance variation<1%after 10 h open-circuit storage).The establishment of this conversion-type electrochromism may inspire the exploration of novel electrochromic materials and devices.

关键词： electrochromic CuI conversion reaction self-healing neutral color

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Advances in sodium-ion batteries at low-temperature: Challenges and strategies

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Journal of energy Chemistry 2024年第3期90卷 518-539,I0012页

作者： Haoran Bai Xiaohui Zhu Huaisheng Ao Guangyu He Hai Xiao Yinjuan Chen Key Laboratory of advanced Catalytic Materials and Technology Advanced Catalysis and Green Manufacturing Collaborative Innovation CenterChangzhou UniversityChangzhou 213164JiangsuChina department of Chemistry Tsinghua UniversityBeijing 100084China

With the continuing boost in the demand for energy storage,there is an increasing requirement for batteries to be capable of operation in extreme environmental ***-ion batteries(SIBs) have emerged as a highly promising energy storage solution due to their promising performance over a wide range of temperatures and the abundance of sodium resources in the earth's *** to lithiumion batteries(LIBs),although sodium ions possess a larger ionic radius,they are more easily desolvated than lithium *** rthermore,SIBs have a smaller Stokes radius than lithium ions,resulting in improved sodium-ion mobility in the ***,SIBs demonstrate a significant decrease in performance at low temperatures(LT),which constrains their operation in harsh weather *** the increasing interest in SIBs,there is a notable scarcity of research focusing specifically on their mechanism under LT *** review explores recent research that considers the thermal tolerance of SIBs from an inner chemistry process perspective,spanning a wide temperature spectrum(-70 to100℃),particularly at LT *** addition,the enhancement of electrochemical performance in LT SIBs is based on improvements in reaction kinetics and cycling stability achieved through the utilization of effective electrode materials and electrolyte ***,the safety concerns associated with SIBs are addressed and effective strategies are proposed for mitigating these ***,prospects conducted to extend the environmental frontiers of commercial SIBs are discussed mainly from three viewpoints including innovations in materials,development and research of relevant theoretical mechanisms,and intelligent safety management system establishment for larger-scale energy storage SIBs.

关键词： Low-temperature Sodium-ion batteries Reaction kinetics Cycle stability Safety concerns of Sodium-ion batteries

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Reducing the voltage loss of Y-series acceptor based organic solar cells via ternary/quaternary strategies

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Chinese Chemical Letters 2024年第2期35卷 70-86页

作者： Pengyu Zhang Zhiyang Zhang Heng Sun Jie Li Yi Chen Jiang Wang Chuanlang Zhan Key Laboratory of advanced Materials Chemistry and Devices (AMC&DLab) of the department of Education of Inner Mongolia Autonomous Region Inner Mongolia Key Laboratory of Green CatalysisCollege of Chemistry and Environment ScienceInner Mongolia Normal UniversityHuhehot 010022China

In recent years, with the emergence of non-fullerene fused-ring acceptors, power conversion efficiencies (PCEs) of organic solar cells (OSCs) have exceeded 19%.However, compared to inorganic or perovskite photovoltaic cells, a higher voltage loss has become one of the key factors limiting further improvement in the PCEs of *** ternary/quaternary strategy has been identified as a feasible and effective way to obtain high-efficiency *** this review, a brief outline is given of the key roles that guest materials played in reducing voltage losses in solar cell devices and a brief look at the future material design and the design of ternary/quaternary systems.

关键词： Organic solar cell Ternary/quaternary strategy Open-circuit voltage Voltage loss Non-radiative recombination loss

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Pd Pt VO_(x)/CeO_(2)-ZrO_(2):Highly efficient catalysts with good sulfur dioxide-poisoning reversibility for the oxidative removal of ethylbenzene

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Journal of environmental Sciences 2024年第4期138卷 153-166页

作者： Jia Wang Yuxi Liu Jiguang Deng Lin Jing Xiuqing Hao Xing Zhang Xiaohui Yu Hongxing Dai Beijing Key Laboratory for green Catalysis and Separation Key Laboratory of Beijing on Regional Air Pollution ControlKey Laboratory of Advanced Functional MaterialsEducation Ministry of ChinaLaboratory of Catalysis Chemistry and NanoscienceDepartment of Chemical EngineeringFaculty of Environment and LifeBeijing University of TechnologyBeijing 100124China

The PdPtVO_(x)/CeO_(2)-ZrO_(2)(PdPtVO_(x)/CZO)catalysts were obtained by using different approaches,and their physical and chemical properties were determined by various *** activities of these materials in the presence of H_(2)O or SO_(2)were evaluated for the oxidation of ethylbenzene(EB).The PdPtVO_(x)/CZO sample exhibited high catalytic activity,good hydrothermal stability,and reversible sulfur dioxide-poisoning performance,over which the specific reaction rate at 160℃,turnover frequency at 160℃(TOF_(Pd or Pt)),and apparent activation energy were 72.6 mmol/(g_(Pt)·sec)or 124.2 mmol/(g_(Pd)·sec),14.2 sec^(-1)(TOF_(Pt))or 13.1 sec^(-1)(TOF_(Pd)),and 58 k J/mol,*** large EB adsorption capacity,good reducibility,and strong acidity contributed to the good catalytic performance of PdPtVO_(x)/*** activity of PdPtVO_(x)/CZO decreased when 50 ppm SO_(2)or(1.0 vol.%H_(2)O+50 ppm SO_(2))was added to the feedstock,but was gradually restored to its initial level after the SO_(2)was cut *** good reversible sulfur dioxide-resistant performance of PdPtVO_(x)/CZO was associated with the facts:(i)the introduction of SO_(2)leads to an increase in surface acidity;(ii)V can adsorb and activate SO_(2),thus accelerating formation of the SO_(x)^(2-)(x=3 or 4)species at the V and CZO sites,weakening the adsorption of sulfur species at the PdPt active sites,and hence protecting the PdPt active sites to be not poisoned by SO_(2).EB oxidation over PdPtVO_(x)/CZO might take place via the route of EB→styrene→phenyl methyl ketone→benzaldehyde→benzoic acid→maleic anhydride→CO_(2)and H_(2)O.

关键词： Ceria-zirconia Supported palladium-platinum-vanadium catalyst Volatile organic compound Ethylbenzene oxidation Sulfur dioxide resistance

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Bimetallic CoNi single atoms supported on three-dimensionally ordered mesoporous chromia: highly active catalysts for n-hexane combustion

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green energy & environment 2024年第7期9卷 1122-1137页

作者： Xiuqing Hao Yuxi Liu Jiguang Deng Lin Jing Jia Wang Wenbo Pei Hongxing Dai Beijing Key Laboratory for green Catalysis and Separation Key Laboratory of Beijing on Regional Air Pollution Control Key Laboratory of Advanced Functional Materials Education Ministry of China Laboratory of Catalysis Chemistry and Nanoscience Department of Chemical Engineering Faculty of Environment and Life Beijing University of Technology

Developing the alternative supported noble metal catalysts with low cost,high catalytic efficiency,and good resistance toward carbon dioxide and water vapor is critically demanded for the oxidative removal of volatile organic compounds （VOCs）.In this work,we prepared the mesoporous chromia-supported bimetallic Co and Ni single-atom （Co1Ni1/meso-Cr2O3） and bimetallic Co and Ni nanoparticle (CoNPNiNP/mesoCr2O3) catalysts adopting the one-pot polyvinyl pyrrolidone （PVP）-and polyvinyl alcohol （PVA）-protecting approaches,*** results indicate that the Co1Ni1/meso-Cr2O3catalyst exhibited the best catalytic activity for n-hexane (C6H14) combustion (T50%and T90%were 239 and 263℃ at a space velocity of 40,000 mL g-1h-1;apparent activation energy and specific reaction rate at 260℃ were 54.7 kJ mol-1and 4.3×10-7mol g-1cats-1,respectively),which was associated with its higher (Cr5++Cr6+) amount,large n-hexane adsorption capacity,and good lattice oxygen mobility that could enhance the deep oxidation of n-hexane,in which Ni1was beneficial for the enhancements in surface lattice oxygen mobility and low-temperature reducibility,while Co1preferred to generate higher contents of the high-valence states of chromium and surface oxygen species as well as adsorption and activation of n-hexane.n-Hexane combustion takes place via the Mars van Krevelen（MvK） mechanism,and its reaction pathways are as follows:n-hexane→olefins or 3-hexyl hydroperoxide→3-hexanone,2-hexanone or 2,5-dimethyltetrahydrofuran→2-methyloxirane or 2-ethyl-oxetane→acrylic acid→COx→CO2and H2O.

关键词： Three-dimensional ordered mesoporous chromium oxide Supported bimetallic single-atom catalyst Cobalt−nickel single atoms n -Hexane combustion Catalytic reaction mechanism

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Non-flammable long chain phosphate ester based electrolyte via competitive solventized structures for high-performance lithium metal batteries

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Journal of energy Chemistry 2024年第10期97卷 156-165页

作者： Li Liao Zhiqiang Han Xuanjie Feng Pan Luo Jialin Song Yin Shen Xiaoshuang Luo Xinpeng Li Xuanzhong Wen Bo Yu Junchen Chen Bingshu Guo Mingshan Wang Yun Huang Hongmei Zhang Mengmeng Yin Jiangtao Liu Yuanhua Lin Xing Li School of New energy and Materials Southwest Petroleum University Beijing advanced Innovation Center for Materials Genome Engineering Center for Green Innovation School of Mathematics and Physics University of Science and Technology Beijing State Key Laboratory of advanced Chemical Power Sources Guizhou Meiling Power Sources Co.Ltd

Safety remains a persistent challenge for high-energy-density lithium metal batteries（LMBs）.The development of safe and non-flammable electrolytes is especially important in harsh conditions such as high ***,a flame-retardant,low-cost and thermally stable long chain phosphate ester based（tributyl phosphate,TBP） electrolyte is reported,which can effectively enhance the cycling stability of highly loaded high-nickel LMBs with high safety through co-solvation *** interfacial compatibility between TBP and electrode is effectively improved using a short-chain ether（glycol dimethyl ether,DME）,and a specially competitive solvation structure is further constructed using lithium borate difluorooxalate（LiDFOB） to form the stable and inorganic-rich electrode *** from the presence of the cathode electrolyte interphase（CEI） and solid electrolyte interphase（SEI） enriched with LiF and LixPOyFz,the electrolyte demonstrates excellent cycling stability assembled using a 50 μm lithium foil anode in combination with a high loading NMC811(15.4 mg cm-2) cathode,with 88% capacity retention after 120 ***,the electrolyte exhibits excellent high-temperature characteristics when used in a 1-Ah pouch cell（N/P=0.26）,and higher thermal runaway temperature（238℃） in the ARC（accelerating rate calorimeter） demonstrating high *** novel electrolyte adopts long-chain phosphate as the main solvent for the first time,and would provide a new idea for the development of extremely high safety and high-temperature electrolytes.

关键词： Battery safety Lithium metal batteries Long chain phosphate ester Non-flammable electrolyte Solvation structure

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Chemical vapor deposition making better lithium-sulfur batteries

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Science Bulletin 2024年第13期69卷 2013-2016页

作者： Yingze Song Lixian Song Menglei Wang Wenlong Cai State Key Laboratory of environment-Friendly energy Materials School of Materials and ChemistrySouthwest University of Science and TechnologyMianyang 621010China School of Material Science and Engineering Henan University of TechnologyZhengzhou 450001China department of advanced energy Materials College of Materials Science and EngineeringSichuan UniversityChengdu 610064China

The burgeoning demand for modern electronic devices and electric vehicles has driven the development of efficient,reliable,and environmentally friendly batteries[1,2].Lithium–sulfur(Li–S)batteries with high theoretical capacity(1672 mA h g1)and energy density(2600 W h kg1),have garnered significant interest in both academic and industrial research[3,4].However,the widespread production and commercialization of Li–S batteries are impeded by the inherent characteristics of sulfur and lithium,along with their complex electrochemical ***,challenges such as the polysulfide shuttle effect and the slow kinetics of the sulfur nucleation/decomposition reaction hinder capacity utilization and cycling *** overcome these challenges,innovative electrocatalyst strategies aimed at enhancing activity have been explored.

关键词： lithium overcome cycling

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