Article
Engineering, Environmental
Yali Li, Qinglin Wen, Jiaqi Qin, Siyi Zou, Fandi Ning, Chuang Bai, Saifei Pan, Hanqing Jin, Pengpeng Xu, Min Shen, YuJiang Song, Xiaochun Zhou
Summary: In this study, a high-efficient, contamination-free, and low-consumption nanoimprint method was developed to prepare composite proton exchange membranes (PEMs) with ordered Nafion arrays. The method significantly improves the performance of the composite PEMs and promotes the development of ordered membrane electrode assemblies (MEAs) in various applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Tu Lan, Xiaolong Guo, De Li, Yong Chen
Summary: In this study, LiFePO4 was synthesized successfully with a home-made spray drying device, and the influence of spray drying temperature on its memory effect in LIBs was investigated. The results showed that an increase in spray drying temperature strengthened the memory effect of LiFePO4, while also leading to a decrease in capacity. XRD refinement and FTIR spectra indicated that the enhancement of memory effect was attributed to the increase of Li-Fe dislocations.
Article
Chemistry, Multidisciplinary
Hyo Eun Kim, Jeehye Kim, Eun Cheol Ra, Hemin Zhang, Youn Jeong Jang, Jae Sung Lee
Summary: The study investigates the photoelectrochemical nitrate reduction reaction (PEC NO3RR) for green ammonia production, achieving a high Faradaic efficiency of 95.6% using an Au-decorated ordered silicon nanowire (O_SiNW) array photocathode. The O_SiNW structure is favorable for promoting the reaction and utilizing photovoltage to achieve high ammonia production efficiency.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Materials Science, Coatings & Films
Chenxu Liu, Yajing Gong, Yuechang Wang, Chenchen Zhou, Jin Zhang, Yu Tian, Yonggang Meng
Summary: In this study, a TiO layer was coated on a Ti alloy substrate through cathode plasma electrolysis and comproportionation. The TiO layer exhibited excellent hardness and wear resistance, reducing the wear rate of the Ti alloy significantly. The CPE-treated samples also showed improved wear resistance for other metallic materials.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Bin Tian, Yali Li, Yiyang Liu, Fandi Ning, Xiong Dan, Qinglin Wen, Lei He, Can He, Min Shen, Xiaochun Zhou
Summary: In this work, an ordered membrane electrode assembly (MEA) with gradient Nafion distribution, tightly bonded catalytic layer/proton exchange membrane (CL/PEM) interface, and abundant vertical channels was developed using an anodic aluminum oxide template and magnetron sputtering method. This ordered MEA achieved a low Ir loading of 20.0μg cm(-2) and a high electrochemical active area, resulting in a mass activity of 168,000 mA mg(Ir) (-1) cm(-2) at 2.0V, superior to most reported PEM electrolyzers. It also maintained excellent durability at a current density of 500 mA cm(-2). This work provides a simple and scalable route for designing ordered MEAs for proton exchange membrane water electrolysis.
Article
Chemistry, Multidisciplinary
Saifei Pan, Jiaqi Qin, Fandi Ning, Chuang Bai, Qinlin Wen, Min Shen, Yali Li, Yujiang Song, Jiafan Chen, Yunjie Huang, Yecheng Zou, Wei Feng, Xiaochun Zhou
Summary: Ordered membrane electrode assembly (MEA) is a frontier research field in proton exchange membrane fuel cells (PEMFCs). The use of a well-dispersed Nafion array prepared by freeze-drying greatly improves the performance of PEMFC, increasing the specific surface area and electrochemical surface area of the catalyst layer significantly. This research demonstrates that the freeze-drying method effectively prevents aggregation of the Nafion array and enhances overall performance, providing an ideal basic material for the preparation of the ordered MEA.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Nanoscience & Nanotechnology
Fangyuan Ma, Zhitao Huang, Marcin Ziolek, Shizhong Yue, Xu Han, Dongke Rong, Zihao Guo, Kaiwen Chu, Xiaohao Jia, Yulin Wu, Jing Zhao, Kong Liu, Jie Xing, Zhijie Wang, Shengchun Qu
Summary: Template-assisted antisolvent crystallization method is used to fabricate CH3NH3PbBr3 nanowires with designable shapes, low crystal defects, and ordered alignment. The introduction of acetonitrile vapor helps sequester water and oxygen in air, preventing the formation of grain boundaries and surface defects. The resulting photodetector based on these nanowires exhibits excellent light response.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Thermodynamics
Diogo F. M. Santos, Daniela S. Falcao, Alexandra M. F. R. Pinto, Rui B. Ferreira
Summary: A proton exchange membrane fuel cell stack designed for unmanned aerial vehicle applications was used to evaluate the influence of several membrane electrode assembly (MEA) characteristics. MEAs prepared with catalytic layers (CLs) deposited directly on the membrane presented slightly better performance than those with CLs deposited in the gas diffusion layers (GDLs). Thinner membranes were beneficial to the stack performance due to lower activation and ohmic losses. Increasing the Pt loading on the cathode side from 0.5 to 2.0 mg Pt cm(-2) did not improve the performance. Small differences were observed between carbon cloth and carbon paper GDLs, possibly due to the presence of a microporous layer (MPL). The hydrophobic treatment of the GDLs improved the performance due to a better humidification of the MEAs. The MPL was found fundamental for a high performance due to an improvement in the electric contact, decreasing ohmic losses. The stack operation under realistic conditions, consisting of a transient energy profile typical of an UAV flight, was also investigated. The stack presented higher dynamic performance than its steady-state one at low currents but slightly lower at high currents. Differences in temperature were observed, which probably contributed to this disparity.
INTERNATIONAL JOURNAL OF GREEN ENERGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Yihao Chen, Qinghua Fan, Jiajie Li, Ming Chen, Haolin Jin, Ni Wen, Youzhong Dong, Quan Kuang, Yanming Zhao
Summary: A series of Fe-doped Na3Mn2-xFex(P2O7)(PO4) compounds were successfully prepared using the sol-gel method. The proportion of nanowires in the morphology increased with the rise of Fe component, and the NMFP-0.4 nanowire-shaped compounds showed the best electrochemical activity when used as a cathode material for SIBs. Furthermore, it exhibited a high specific capacity when used as an anode material for lithium-ion batteries.
DALTON TRANSACTIONS
(2022)
Article
Engineering, Environmental
Xiaoyu Zhong, Linyang Li, Wenhao Xiang, Chuanbao Xiao, Nianbing Zhong, Quanhua Xie, Dengjie Zhong, Yunlan Xu, Haixing Chang, Shih-Hsin Ho
Summary: A highly stable and efficient photoelectrocatalytic system was developed for the rapid degradation of tetracycline. This system consists of Ag/N-doped TiO2 nanotube photoanodes, a bipolar membrane, and a P-Pd cathode. The system achieved complete degradation of tetracycline within 60 minutes and removal of 82.3% total organic carbon within 5 hours. The system also exhibited excellent stability and reliability, making it a valuable tool for wastewater remediation.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
Abraham Akinin, Jeremy M. Ford, Jiajia Wu, Chul Kim, Hiren D. Thacker, Patrick P. Mercier, Gert Cauwenberghs
Summary: This article introduces an inductively powered wireless SoC for an electrically controlled, optically addressed retinal prosthetic system, achieving reduced thermal dissipation near sensitive retinal tissue and charge-balanced stimulation control.
IEEE JOURNAL OF SOLID-STATE CIRCUITS
(2021)
Article
Engineering, Environmental
Lixue Liu, Chaoqun Yao, Shuainan Zhao, Zhikai Liu, Guangwen Chen
Summary: An approach that combines power ultrasound and microchannel to enhance the mixing of miscible fluid in antisolvent processes is proposed. The evolution and oscillation of cavitation microbubbles during ultrasound actuation, facilitated by antisolvent processes, lead to easier initiation of transient cavitation compared to pure liquids. Interaction among microbubbles results in two distinct group patterns, namely bubble array and bubble cluster, significantly impacting mixing. Both patterns increase mixing efficiency by at least one order of magnitude compared to microfluidic devices and previously-studied ultrasonic microreactors. The approach generates high-quality mini-emulsions with a unimodal size range of 180-290 nm for the model system (acetone-soybean oil-water).
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Xiaohang Ma, Yanqing Guo, Changyong Yu, Xiaoyi Chen, Liangyi Gui, Nan Cheng, Jinxiao Sun, Pengzhi Chen, Jialong Chen, Zhenfa Zi, Jianming Dai
Summary: A novel preparation technology was proposed in this study, synthesizing K2Fe[Fe(CN)(6)] materials using an electrostatic spray assisted coprecipitation method protected by an inert atmosphere. The synthesized material showed good crystallinity, small particle size, high specific surface area, and excellent electrochemical performance, providing a new strategy for the optimization of Prussian blue-based materials.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Nanoscience & Nanotechnology
Xuefei Wei, Anbao Yuan, Jiaqiang Xu
Summary: A nickel foam-supported trimetallic phosphide nanowire array electrode (NiCoMn-P/NF) is synthesized and investigated for its electrochemical properties. The electrode demonstrates a very negative open-circuit potential and is converted to metal hydroxide species through chemical reactions during immersion in alkaline electrolyte. The converted metal hydroxide exhibits a high specific capacity and stability in rechargeable alkaline batteries. Additionally, the assembled full cell based on NiCoMn-P electrode exhibits excellent long-term cycling stability.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Inge Verboven, Joao Silvano, Ken Elen, Hilde Pellaers, Bart Ruttens, Jan D'Haen, Marlies K. Van Bael, An Hardy, Wim Deferme
Summary: The study demonstrates that ultrasonically spray coating is an excellent printing technique for applying silver nanowires and conductive polymers, forming electrodes with high transparency and conductivity, which have been successfully applied in organic light-emitting diodes.
ADVANCED ENGINEERING MATERIALS
(2022)
Article
Thermodynamics
Yong Cheng, Fukai Song, Lei Fu, Saishuai Dai, Zhiming Yuan, Atilla Incecik
Summary: This paper investigates the accessibility of wave energy absorption by a dual-pontoon floating breakwater integrated with hybrid-type wave energy converters (WECs) and proposes a hydraulic-pneumatic complementary energy extraction method. The performance of the system is validated through experiments and comparative analysis.
Article
Thermodynamics
Jing Gao, Chao Wang, Zhanwu Wang, Jin Lin, Runkai Zhang, Xin Wu, Guangyin Xu, Zhenfeng Wang
Summary: This study aims to establish a new integrated method for biomass cogeneration project site selection, with a focus on the application of the model in Henan Province. By integrating Geographic Information System and Multiple Criterion Decision Making methods, the study conducts site selection in two stages, providing a theoretical reference for the construction of biomass cogeneration projects.
Article
Thermodynamics
Mert Temiz, Ibrahim Dincer
Summary: The current study presents a hybrid small modular nuclear reactor and solar-based system for sustainable communities, integrating floating and bifacial photovoltaic arrays with a small modular reactor. The system efficiently generates power, hydrogen, ammonia, freshwater, and heat for residential, agricultural, and aquaculture facilities. Thermodynamic analysis shows high energy and exergy efficiencies, as well as large-scale ammonia production meeting the needs of metropolitan areas. The hybridization of nuclear and solar technologies offers advantages of reliability, environmental friendliness, and cost efficiency compared to renewable-alone and fossil-based systems.
Editorial Material
Thermodynamics
Wojciech Stanek, Wojciech Adamczyk
Article
Thermodynamics
Desheng Xu, Yanfeng Li, Tianmei Du, Hua Zhong, Youbo Huang, Lei Li, Xiangling Duanmu
Summary: This study investigates the optimization of hybrid mechanical-natural ventilation for smoke control in complex metro stations. The results show that atrium fires are more significantly impacted by outdoor temperature variations compared to concourse/platform fires. The gathered high-temperature smoke inside the atrium can reach up to 900 K under a 5 MW train fire energy release. The findings provide crucial engineering insights into integrating weather data and adaptable ventilation protocols for smoke prevention/mitigation.
Article
Thermodynamics
Da Guo, Heping Xie, Mingzhong Gao, Jianan Li, Zhiqiang He, Ling Chen, Cong Li, Le Zhao, Dingming Wang, Yiwei Zhang, Xin Fang, Guikang Liu, Zhongya Zhou, Lin Dai
Summary: This study proposes a new in-situ pressure-preserved coring tool and elaborates its pressure-preserving mechanism. The experimental and field test results demonstrate that this tool has a high pressure-preservation capability and can maintain a stable pressure in deep wells. This study provides a theoretical framework and design standards for the development of similar technologies.
Article
Thermodynamics
Aolin Lai, Qunwei Wang
Summary: This study assesses the impact of China's de-capacity policy on renewable energy development efficiency (REDE) using the Global-MSBM model and the difference-in-differences method. The findings indicate that the policy significantly enhances REDE, promoting technological advancements and marketization. Moreover, regions with stricter environmental regulations experience a higher impact.
Article
Thermodynamics
Mostafa Ghasemi, Hegazy Rezk
Summary: This study utilizes fuzzy modeling and optimization to enhance the performance of microbial fuel cells (MFCs). By simulating and analyzing experimental data sets, the ideal parameter values for increasing power density, COD elimination, and coulombic efficiency were determined. The results demonstrate that the fuzzy model and optimization methods can significantly improve the performance of MFCs.
Article
Thermodynamics
Zhang Ruan, Lianzhong Huang, Kai Wang, Ranqi Ma, Zhongyi Wang, Rui Zhang, Haoyang Zhao, Cong Wang
Summary: This paper proposes a grey box model for fuel consumption prediction of wing-diesel hybrid vessels based on feature construction. By using both parallel and series grey box modeling methods and six machine learning algorithms, twelve combinations of prediction models are established. A feature construction method based on the aerodynamic performance of the wing and the energy relationship of the hybrid system is introduced. The best combination is obtained by considering the root mean square error, and it shows improved accuracy compared to the white box model. The proposed grey box model can accurately predict the daily fuel consumption of wing-diesel hybrid vessels, contributing to operational optimization and the greenization and decarbonization of the shipping industry.
Article
Thermodynamics
Huayi Chang, Nico Heerink, Junbiao Zhang, Ke He
Summary: This study examines the interaction between off-farm employment decisions between couples and household clean energy consumption in rural China, and finds that two-paycheck households are more likely to consume clean energy. The off-farm employment of women is a key factor driving household clean energy consumption to a higher level, with wage-employed wives having a stronger influence on these decisions than self-employed ones.
Article
Thermodynamics
Hanguan Wen, Xiufeng Liu, Ming Yang, Bo Lei, Xu Cheng, Zhe Chen
Summary: Demand-side management is crucial to smart energy systems. This paper proposes a data-driven approach to understand the relationship between energy consumption patterns and household characteristics for better DSM services. The proposed method uses a clustering algorithm to generate optimal customer groups for DSM and a deep learning model for training. The model can predict the possibility of DSM membership for a given household. The results demonstrate the usefulness of weekly energy consumption data and household socio-demographic information for distinguishing consumer groups and the potential for targeted DSM strategies.
Article
Thermodynamics
Xinglan Hou, Xiuping Zhong, Shuaishuai Nie, Yafei Wang, Guigang Tu, Yingrui Ma, Kunyan Liu, Chen Chen
Summary: This study explores the feasibility of utilizing a multi-level horizontal branch well heat recovery system in the Qiabuqia geothermal field. The research systematically investigates the effects of various engineering parameters on production temperature, establishes mathematical models to describe their relationships, and evaluates the economic viability of the system. The findings demonstrate the significant economic feasibility of the multi-level branch well system.
Article
Thermodynamics
Longxin Zhang, Songtao Wang, Site Hu
Summary: This investigation reveals the influence of tip leakage flow on the modern transonic rotor and finds that the increase of tip clearance size leads to a decline in rotor performance. However, an optimal tip clearance size can extend the rotor's stall margin.
Article
Thermodynamics
Kristian Gjoka, Behzad Rismanchi, Robert H. Crawford
Summary: This paper proposes a framework for assessing the performance of 5GDHC systems and demonstrates it through a case study in a university campus in Melbourne, Australia. The results show that 5GDHC systems are a cost-effective and environmentally viable solution in mild climates, and their successful implementation in Australia can create new market opportunities and potential adoption in other countries with similar climatic conditions.
Article
Thermodynamics
Jianwei Li, Guotai Wang, Panpan Yang, Yongshuang Wen, Leian Zhang, Rujun Song, Chengwei Hou
Summary: This study proposes an orientation-adaptive electromagnetic energy harvester by introducing a rotatable bluff body, which allows for self-regulation to cater for changing wind flow direction. Experimental results show that the output power of the energy harvester can be greatly enhanced with increased rotatory inertia of the rotating bluff body, providing a promising solution for harnessing wind-induced vibration energy.