Article
Materials Science, Multidisciplinary
Tianwei Jin, Gerald Singer, Keyue Liang, Yuan Yang
Summary: The development of light-weight batteries, known as structural batteries, has great potential value for mobile applications such as electric vehicles and electric aircraft. Two methods have been explored to develop structural batteries: integrating batteries with external reinforcements and introducing multifunctional materials as battery components. Although further research is needed, structural batteries show promise in significantly improving the performance of electric vehicles and devices.
Article
Green & Sustainable Science & Technology
Xi-Yin Zhou, Zhicheng Xu, Jialin Zheng, Ya Zhou, Kun Lei, Jiafeng Fu, Soon-Thiam Khu, Junfeng Yang
Summary: The carbon reduction potential of transportation electrification has been examined using the multi-regional input-output model and quasi-input-output model. The results show that while transportation electrification scenario would lead to a reduction of 403 million tons of CO2 emissions, the spatial spillover effect in the electricity generation sector offsets this reduction by an increase of 302 million tons. When considering both transportation electrification and cleaner electricity generation scenarios together, the total CO2 emissions reduced amount to 1,997 million tons, which is larger than the combined effect of implementing each scenario separately by 94 million tons. This highlights the importance of focusing on cleaner generation mix construction to mitigate carbon emission transfer.
Article
Construction & Building Technology
Audrey Ku, Daniel M. Kammen, Sergio Castellanos
Summary: This study implements a framework that supports the electrification of the transportation system in cities in an equitable way, using local air quality data and sociodemographic indicators, to prioritize interventions and incentives. The subsequent steps involve identifying specific bus routes with the highest impact on environmental burden distribution and regions with the highest impact on racial and social equity and mobility for private vehicle interventions.
SUSTAINABLE CITIES AND SOCIETY
(2021)
Article
Computer Science, Information Systems
Haoming Guo, Xuefeng Yan
Summary: With the rise of self-media, rumors have become widespread, posing new challenges to government departments in dealing with rumor management. To address this, a susceptible-infective-counter-media-remover (SICMR) rumor propagation model with a double refutation mechanism is proposed. The model is analyzed mathematically to obtain two thresholds for rumor propagation, and equilibrium states are obtained and proven to be stable. Numerical simulations and comparative experiments validate the theoretical results and the effectiveness of the model. Lastly, the model is applied to real rumor datasets from Twitter and achieves the best result among similar works, with R-squared values of 0.8811 and 0.9469.
INFORMATION SCIENCES
(2023)
Article
Thermodynamics
Shuangqi Li, Chenghong Gu, Pengfei Zhao, Shuang Cheng
Summary: The study designs a novel propulsion system topology and power distribution algorithm for light manned electric aircraft, verified on the Alpha Electro prototype aircraft, demonstrating the ability to dynamically meet power requirements and protect the fuel cell effectively while reducing hydrogen consumption by 7.63% compared to fuel cell electric aircraft.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Electrochemistry
Taylor R. Garrick, Yangbing Zeng, Jason B. Siegel, Venkat R. Subramanian
Summary: Traditionally, building prototype hardware for validation testing in electric vehicle development is costly and time-consuming. Virtual engineering offers a reduced-cost alternative by using multi-scale modeling to simulate the impact of design changes on the overall performance of battery systems.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Energy & Fuels
Zekun Guo, Chun Sing Lai, Patrick Luk, Xin Zhang
Summary: Flightpath 2050 requires a significant reduction in CO2 emissions and emission-free airports by 2050. This study proposes a techno-economic assessment of wireless charging, wired charging, and conventional technologies for electrifying airport shuttle buses. The results show that wireless charging enables electric shuttle buses to carry smaller batteries while performing similar tasks as conventional vehicles and bi-directional wireless charging can mitigate the impact on the distribution network.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Lifen Wang, Chengji Liang, Jian Shi, Anahita Molavi, Gino Lim, Yue Zhang
Summary: A novel bilevel hybrid economic approach is proposed in this research to aid both the regulatory agency and the port entity in increasing OPS uptake, by minimizing negative environmental impacts caused by ships at berth through optimizing policies and investment decisions. The simulation-based case study shows the strength of the proposed hybrid economic approach compared to conventional regulatory and market-based approaches in terms of environmental and economic benefits.
Article
Chemistry, Multidisciplinary
Chunwei Hu, Xianfeng Liu, Sheng Wu, Fei Yu, Yongkun Song, Jin Zhang
Summary: This research proposes a dynamic graph convolutional network model (Res-DGCN) based on the residual network structure for accurate crowd flow prediction in urban areas. The model utilizes the spatio-temporal attention module (SA) to capture the spatial relationship between target nodes and adjacent nodes, and the conditional convolution module (SCondConv) to learn the shifting characteristics of crowd flow. The proposed model achieves better performance compared to baseline models, with improvements in mean absolute error (MAE) and root mean square error (RMSE).
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Environmental
Wenqiu Liu, Wei Liu, Xinxin Li, Yeye Liu, Abiodun Emmanuel Ogunmoroti, Muyang Li, Mengyan Bi, Zhaojie Cui
Summary: This study examines the consumption of lithium and cobalt in the lithium-ion battery system in China, showing a steady increase in consumption since 2000 with the rise of electric vehicles. Additionally, the recycling and reuse of end-of-life LIBs have also been a growing trend.
RESOURCES CONSERVATION AND RECYCLING
(2021)
Article
Energy & Fuels
Nur Najihah Abu Bakar, Najmeh Bazmohammadi, Halil Cimen, Tayfun Uyanik, Juan C. Vasquez, Josep M. Guerrero
Summary: This paper proposes a data-driven approach for forecasting the berthing duration of ships undergoing cold ironing using various models. The artificial neural network outperforms other models in handling complex forecasting problems and provides accurate predictions. This information is vital for port operators.
Article
Operations Research & Management Science
Matthew Battifarano, Sean Qian
Summary: Connected technologies have changed the mobility systems by allowing digital platforms to coordinate large sets of vehicles in real time. Optimized fleets can reduce system cost, but at small penetrations, they may worsen system cost relative to user equilibrium. However, beyond a critical penetration level, optimized fleets can reduce system cost in the network and achieve system optimal traffic flow without an external subsidy.
TRANSPORTATION SCIENCE
(2023)
Article
Automation & Control Systems
Lukas Graf, Tobias Harks, Kostas Kollias, Michael Markl
Summary: We propose a dynamic traffic assignment model where agents make instant routing decisions based on real-time delay predictions. The model encompasses full information and instantaneous information models, while allowing for more realistic predictors. We derive properties of the predictors that ensure the existence of a dynamic prediction equilibrium and define epsilon-approximate DPE. Experimental comparisons of different predictors' average travel times are conducted.
JOURNAL OF MACHINE LEARNING RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Gaojie Xu, Jiedong Li, Chao Wang, Xiaofan Du, Di Lu, Bin Xie, Xiao Wang, Chenglong Lu, Haisheng Liu, Shanmu Dong, Guanglei Cui, Liquan Chen
Summary: This study reveals a negative correlation between the accumulation of LiH and the cyclability of practical LMBs. Additionally, a temperature-sensitive equilibrium governing the formation and decomposition process of LiH at the Li anode is identified, providing important insights for efficient Li protection and the ultimate application of LMBs.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Zhaoqi Liu, Shuyao Li, Shiquan Lin, Yuxiang Shi, Peng Yang, Xiangyu Chen, Zhong Lin Wang
Summary: This study reveals that strain and low temperature can induce crystallization behavior in elastic triboelectric materials, leading to a shift in triboelectric series and electrification polarity. Natural rubber exhibits a significant effect, and an applied strain at low temperature can further enhance this shift.
Article
Energy & Fuels
Fuquan Zhao, Zhexuan Mu, Han Hao, Zongwei Liu, Xin He, Steven Victor Przesmitzki, Amer Ahmad Amer
Article
Green & Sustainable Science & Technology
Dengye Xun, Han Hao, Xin Sun, Zongwei Liu, Fuquan Zhao
JOURNAL OF CLEANER PRODUCTION
(2020)
Article
Green & Sustainable Science & Technology
Jingxuan Geng, Han Hao, Xin Sun, Dengye Xun, Zongwei Liu, Fuquan Zhao
Summary: This study focuses on conducting a static material flow analysis of neodymium in China to quantitatively analyze the industrial chain structure of neodymium and to calculate the neodymium output from illegal mining. The results show that a considerable amount of primary neodymium resources in China come from illegal mining, emphasizing the importance of recycling neodymium from end-of-life products to reduce illegal mining and meet the increasing demand for neodymium.
JOURNAL OF INDUSTRIAL ECOLOGY
(2021)
Article
Environmental Studies
Qinyu Qiao, Fuquan Zhao, Zongwei Liu, Han Hao, Xin He, Steven Victor Przesmitzki, Amer Ahmad Amer
TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT
(2020)
Article
Chemistry, Physical
Dengye Xun, Xin Sun, Jingxuan Geng, Zongwei Liu, Fuquan Zhao, Han Hao
Summary: Fuel cell vehicles have the potential to improve air quality and address climate concerns, but there are significant supply risks in the global FCV industry chain, especially in commodities like platinum and gas diffusion layers. Japan faces risks in platinum, the United States in vehicles, and China along the entire industry chain. Mitigation measures such as building national stocks of critical materials and enhancing industry policies are recommended.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Feiqi Liu, Denise L. Mauzerall, Fuquan Zhao, Han Hao
Summary: Hydrogen fuel cells are gaining attention as a potential carbon mitigation strategy for heavy duty vehicles. This study calculates the greenhouse gas emissions of the Chinese heavy-duty truck fleet under four hydrogen fuel cell penetration scenarios, showing significant reductions in GHG emissions can be achieved by using fuel cell vehicles. By combining an analysis of the carbon intensity of various hydrogen production pathways with predictions of the future hydrogen supply structure in China and different penetration rates of heavy-duty fuel cell vehicles, practical applications of the research are provided.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Environmental Sciences
Kangda Chen, Fuquan Zhao, Xinglong Liu, Han Hao, Zongwei Liu
Summary: This study investigates the impact of WLTP on the Chinese market, revealing the effects of WLTP on fuel consumption compared to NEDC and the performance of different engine technologies under WLTP. The findings provide valuable insights for future policy-making for automotive manufacturers and government regulators.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Review
Environmental Sciences
Hong Tan, Fuquan Zhao, Han Hao, Zongwei Liu
Summary: This study summarizes the evidence for the crash avoidance effectiveness of technologies equipped on Intelligent and Connected Vehicles (ICVs), comparing three common methods for safety benefit evaluation (FOT, SIM, SAM) and presenting evidence for different technologies in various crash scenarios. Overall, technologies on ICVs have been shown to significantly reduce the number of crashes according to literature evidence.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Environmental Sciences
Haoyi Zhang, Fuquan Zhao, Han Hao, Zongwei Liu
Summary: The development of the new energy vehicle market has an impact on the future development of the automotive industry in China, and the relaxation effect of fuel consumption restrictions in the dual-credit regulation may become more significant in the coming years. Other major factors to be concerned include the growth rate of the market share of new energy vehicles and adjustments to fuel consumption restrictions.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Green & Sustainable Science & Technology
Kangda Chen, Fuquan Zhao, Han Hao, Zongwei Liu, Xinglong Liu
Summary: This study establishes a model to simulate and evaluate the technology compliance and policy impact of China's fuel consumption and new energy vehicle credit regulations, finding that with the tightening of regulations, the penetration and cost reduction of electric vehicles will limit the development of energy-saving and new energy vehicles.
Article
Engineering, Industrial
Dengye Xun, Han Hao, Xin Sun, Jingxuan Geng, Zongwei Liu, Fuquan Zhao
Summary: This study establishes a system dynamics model to forecast the evolvement of regional fuel cell vehicle (FCV) supply chain in China. The results show that China will face challenges of high import dependence, uncertain market penetration, and high platinum demand. To cope with these challenges, China needs to enhance industrial competitiveness in the upstream supply chain, prepare the whole FCV supply chain in a highly flexible way, and reduce the dependence on imported platinum.
INTERNATIONAL JOURNAL OF PRODUCTION ECONOMICS
(2022)
Article
Multidisciplinary Sciences
Xin Sun, Gang Liu, Han Hao, Zongwei Liu, Fuquan Zhao
Summary: The COVID-19 pandemic and lockdowns have significant impacts on the global economy in the short run. However, their long-term effects on the stability of the global electric vehicles supply chain and climate goals have not been thoroughly explored. The study suggests that if the pandemic can be effectively controlled before 2024, the global EV industry can recover and maintain the same growth trend. The authors recommend directing post-pandemic fiscal stimulus towards improving the quality of battery products.
Article
Multidisciplinary Sciences
Ming Liu, Han Hao, Zhenhong Lin, Xin He, Yuping Qian, Xin Sun, Jingxuan Geng, Zongwei Liu, Fuquan Zhao
Summary: Flying cars, or VTOL, are an emerging technology that is expected to reshape future transportation. The study finds that battery electric is the lowest-cost option for below-200-km VTOL applications, while fuel cell and internal combustion engine have cost advantages in long-range applications.
Article
Engineering, Industrial
Fuquan Zhao, Xu Kuang, Han Hao, Zongwei Liu
Summary: Emerging technologies play a crucial role in global competition, prompting engineering managers to develop comprehensive technology strategies. Technology selection is identified as the core of ET strategies, with policy, technology, and market factors influencing the decision-making process. The study proposes a preliminary framework for ET selection and provides strategic suggestions for managers across different enterprises.
ENGINEERING MANAGEMENT JOURNAL
(2022)
