Article
Chemistry, Multidisciplinary
Feihong Wang, Yutong Wu, Binbin Dong, Kai Lv, Yangyang Shi, Nianwang Ke, Luyuan Hao, Liangjun Yin, Yu Bai, Xin Xu, Yuxi Xian, Simeon Agathopoulos
Summary: Developing an economical, durable, and efficient electrode for large-scale electrochemical hydrogen production at high current densities is highly demanded. In this study, a self-supported electrocatalytic Pt-like WC porous electrode with open finger-like holes is produced through industrial processes. The electrode exhibits excellent durability and stability in both acidic and alkaline media, comparable to Pt electrode, attributed to its unique structure and electronic modulation at the WC-N/W interface.
Article
Chemistry, Physical
Yang Liu, Yuanpeng Huang, Xiangfang Peng, Chenglu Liang
Summary: Selective surface nitridation of self-supported Co oxide nanobushes was conducted to form the Co5.47N@Co oxide nanobushes catalyst electrode for oxygen evolution reaction (OER). The nitridation process resulted in lattice expansion/distortion, rich oxygen vacancies, and promoted charge transfer on the catalyst's surface. Compared to Co oxide nanobushes, the Co5.47N@Co oxide nanobushes electrode exhibited better OER performances in alkaline electrolyte, with low overpotentials, high current densities, and stability for over 20 hours.
APPLIED SURFACE SCIENCE
(2023)
Article
Agricultural Engineering
Lili Gai, Kai Li, Debao Niu, Ailin Zhang, Yongniu Zhang, Yuanxin Feng, Jianbin Li, Tao Liu
Summary: This study proposes an advanced approach of using sugarcane-derived porous carbon membranes as flexible binderless self-supported electrodes. The carbon membranes have a highly porous, multi-level structure and contain abundant nitrogen and oxygen functional groups, which facilitate ion adsorption and rapid electron transfer. The electrodes demonstrate favorable electrochemical characteristics in experiments.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Materials Science, Ceramics
Jianye Yang, Kai Wu, Xing Li, Xuejiao Wang, Guangguang Pi, Wei Fang, Qingyu Yan
Summary: Developing low-cost and high-performance electrodes with a customized size is crucial for electrochemical water splitting in industries. In this study, a novel binder-free electrode based on perovskite SFNMO nanofibers or spinel NCO nanosheets on a porous TiC substrate was developed for efficient oxygen evolution reaction in alkaline water electrolysis. The electrode exhibited excellent OER performance due to its unique large finger-like straight pore structure, facilitating mass transfer and oxygen bubble evolution. The strong adhesion between metal oxide catalysts and TiC substrate, achieved through the interfacial reaction, reduced the contact resistance and enhanced charge transfer kinetics.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Sengeni Anantharaj, Mochen Li, Roshini Arulraj, Karthik Eswaran, C. M. Sara Fidha, Rajini Murugesan, Arthanareeswari Maruthapillai, Suguru Noda
Summary: A self-supported NiTeO3 perovskite material synthesized using an extended hydrothermal tellurization strategy exhibited exceptional activity towards the oxidation of water and methanol, as well as the reduction of water in 1.0 M KOH.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Sensen Yu, Yongjin Zou, Qingyong Wang, Jie Xu, Cuili Xiang, Fen Xu, Lixian Sun, Fan Yang
Summary: In this study, self-supported CoMoS on carbon nanofiber (CoMoS@CNF) catalysts were prepared through a one-step hydrothermal method. The catalyst exhibited abundant active sites and convenient ion diffusion pathways, showing excellent electrocatalytic activity and stability for hydrogen evolution reactions (HER) in alkaline medium.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Ceramics
Feihong Wang, Binbin Dong, Junwei Wang, Nianwang Ke, Chuntian Tan, Anding Huang, Yutong Wu, Luyuan Hao, Liangjun Yin, Xin Xu, Yuxi Xian, Simeon Agathopoulos
Summary: This study introduced a self-supported porous ceramic electrode with excellent catalytic activity for the hydrogen evolution reaction, demonstrating outstanding stability and performance in acidic and alkaline media.
JOURNAL OF ADVANCED CERAMICS
(2022)
Article
Chemistry, Multidisciplinary
Hui Qi, Xinglong Guan, Guangyu Lei, Mengyao Zhao, Hongwei He, Kai Li, Guoliang Zhang, Fengbao Zhang, Xiaobin Fan, Wenchao Peng, Yang Li
Summary: A Ru-pCo @ NC catalyst with low Ru loading was successfully prepared, exhibiting impressive HER catalytic behavior due to the highly specific surface area and porosity of the carbon support, as well as the uniformly dispersed Ru active species.
Article
Chemistry, Physical
Wanan Deng, Yanan Li, Fang Wang, Qingxiang Ma, Shixiong Min
Summary: This study introduces a free-standing cathode Pd@CWM, demonstrating superior electrocatalytic activity and stability for the pH-universal hydrogen evolution reaction, offering a promising design strategy for large-scale clean fuel production.
Article
Nanoscience & Nanotechnology
Jian Chen, Yuan Ha, Ruirui Wang, Yanxia Liu, Hongbin Xu, Bin Shang, Renbing Wu, Hongge Pan
Summary: In this study, a highly active and durable multicomponent catalyst for the hydrogen evolution reaction (HER) was developed. The catalyst, consisting of cobalt nanoparticles confined inside bamboo-like carbon nanotubes (CNTs) and ultralow ruthenium loading on the exterior walls, exhibited exceptional HER activity. The atomic-scale structural investigations and theoretical calculations revealed that the confined inner cobalt and loaded outer ruthenium induced charge redistribution and synergistic electron coupling, optimizing the adsorption energy of H intermediates and facilitating electron/mass transfer. The results demonstrated that the Co@CNTs | Ru catalyst achieved top-level catalytic activity among all reported HER catalysts. This work provides new insights for the rational design of carbon-supported metal catalysts for practical applications.
NANO-MICRO LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Yuantao Pei, Haijun Zhang, Lei Han, Liang Huang, Longhao Dong, Quanli Jia, Shaowei Zhang
Summary: Development of a new electrode with high efficiency hydrogen evolution reaction performance has been achieved in this study, showing potential for large-scale hydrogen production as a replacement for non-renewable fossil fuels. This novel strategy could also be applied to develop other types of self-supporting electrodes for further improved hydrogen evolution reaction performance.
Article
Chemistry, Physical
Huimin Liu, Chang Liu, Xing Zong, Yongfei Wang, Zhizhi Hu, Zhiqiang Zhang
Summary: In this study, a series of Pd-doped Co-MOF-derived carbon materials catalysts were synthesized through direct pyrolysis. The optimized catalyst showed excellent hydrogen evolution reaction (HER) performance in 0.5 M H2SO4 solution, comparable to commercial Pt/C catalyst and even better than Pd-based catalyst reported in literature.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Wenjing Li, Fang Wang, Zhengguo Zhang, Shixiong Min
Summary: A self-supported chainmail electrocatalyst, Co@NCW, developed for rechargeable Zn-air batteries (ZABs) exhibits high catalytic activity and stability as an advanced air cathode through the incorporation of graphitic carbon-encapsulated Co nanoparticles on N-doped carbonized wood.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Wenjing Li, Fang Wang, Zhengguo Zhang, Shixiong Min
Summary: In this study, a self-supported chainmail electrocatalyst was developed as an advanced air cathode for rechargeable Zn-air batteries. The electrocatalyst exhibited efficient oxygen reduction and oxygen evolution reactions, providing abundant reaction sites. The rechargeable battery assembled with the electrocatalyst demonstrated excellent stability and power density.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Nan Wang, Xiangjie Bo, Ming Zhou
Summary: Developing durable and advanced electrocatalysts for pH-universal hydrogen evolution reaction is important. A method using laser conversion at room temperature was used to synthesize Ru@CN electrocatalysts from biomass honey, showing promising electrocatalytic activity. Control of Ru loading and laser power can effectively adjust the activity of the electrocatalysts.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Green & Sustainable Science & Technology
Cameron Bracken, Nathalie Voisin, Casey D. Burleyson, Allison M. Campbell, Z. Jason Hou, Daniel Broman
Summary: This study presents a methodology and dataset for examining compound wind and solar energy droughts, as well as the first standardized benchmark of energy droughts across the Continental United States (CONUS) for a 2020 infrastructure. The results show that compound wind and solar droughts have distinct spatial and temporal patterns across the CONUS, and the characteristics of energy droughts are regional. The study also finds that compound high load events occur more often during compound wind and solar droughts than expected.
Article
Green & Sustainable Science & Technology
Ning Zhang, Yanghao Yu, Jiawei Wu, Ershun Du, Shuming Zhang, Jinyu Xiao
Summary: This paper provides insights into the optimal configuration of CSP plants with different penetrations of wind power by proposing an unconstrained optimization model. The results suggest that large solar multiples and TES are preferred in order to maximize profit, especially when combined with high penetrations of wind and photovoltaic plants. Additionally, the study demonstrates the economy and feasibility of installing electric heaters (EH) in CSP plants, which show a linear correlation with the penetration of variable energy resources.
Article
Green & Sustainable Science & Technology
M. Szubel, K. Papis-Fraczek, S. Podlasek
Article
Green & Sustainable Science & Technology
J. Silva, J. C. Goncalves, C. Rocha, J. Vilaca, L. M. Madeira
Summary: This study investigated the methanation of CO2 in biogas and compared two different methanation reactors. The results showed that the cooled reactor without CO2 separation achieved a CO2 conversion rate of 91.8%, while the adiabatic reactors achieved conversion rates of 59.6% and 67.2%, resulting in an overall conversion rate of 93.0%. Economic analysis revealed negative net present worth values, indicating the need for government monetary incentives.
Article
Green & Sustainable Science & Technology
Yang Liu, Yonglan Xi, Xiaomei Ye, Yingpeng Zhang, Chengcheng Wang, Zhaoyan Jia, Chunhui Cao, Ting Han, Jing Du, Xiangping Kong, Zhongbing Chen
Summary: This study investigated the effect of using nanofiber membrane composites containing Prussian blue-like compound nanoparticles (PNPs) to relieve ammonia nitrogen inhibition of rural organic household waste during high-solid anaerobic digestion and increase methane production. The results showed that adding NMCs with 15% PNPs can lower the concentrations of volatile fatty acids and ammonia nitrogen, and increase methane yield.
Article
Green & Sustainable Science & Technology
Zhong Ge, Xiaodong Wang, Jian Li, Jian Xu, Jianbin Xie, Zhiyong Xie, Ruiqu Ma
Summary: This study evaluates the thermodynamic, exergy, and economic performance of a double-stage organic flash cycle (DOFC) using ten eco-friendly hydrofluoroolefins. The influences of key parameters on performance are analyzed, and the advantages of DOFC over single-stage type are quantified.
Article
Green & Sustainable Science & Technology
Nicolas Kirchner-Bossi, Fernando Porte-Agel
Summary: This study investigates the optimization of power density in wind farms and its sensitivity to the available area size. A novel genetic algorithm (PDGA) is introduced to optimize power density and turbine layout. The results show that the PDGA-driven solutions significantly reduce the levelized cost of energy (LCOE) compared to the default layout, and exhibit a convex relationship between area and LCOE or power density.
Article
Green & Sustainable Science & Technology
Chunxiao Zhang, Dongdong Li, Lin Wang, Qingpo Yang, Yutao Guo, Wei Zhang, Chao Shen, Jihong Pu
Summary: In this study, a novel reversible liquid-filled energy-saving window that effectively regulates indoor solar radiation heat gain is proposed. Experimental results show that this window can effectively reduce indoor temperature during both summer and winter seasons, while having minimal impact on indoor illuminance.
Article
Green & Sustainable Science & Technology
Alessandro L. Aguiar, Martinho Marta-Almeida, Mauro Cirano, Janini Pereira, Leticia Cotrim da Cunha
Summary: This study analyzed the Brazilian Equatorial Shelf using a high-resolution ocean model and found significant tidal variations in the area. Several hypothetical barrages were proposed with higher annual power generation than existing barrages. The study also evaluated the installation effort of these barrages.
Article
Green & Sustainable Science & Technology
Francesco Superchi, Nathan Giovannini, Antonis Moustakis, George Pechlivanoglou, Alessandro Bianchini
Summary: This study focuses on the optimization of a hybrid power station on the Tilos island in Greece, aiming to increase energy export and revenue by optimizing energy fluxes. Different scenarios are proposed to examine the impact of different agreements with the grid operator on the optimal solution.
Article
Green & Sustainable Science & Technology
Peimaneh Shirazi, Amirmohammad Behzadi, Pouria Ahmadi, Sasan Sadrizadeh
Summary: This research presents two novel energy production/storage/usage systems to reduce energy consumption and environmental effects in buildings. A biomass-fired model and a solar-driven system integrated with photovoltaic thermal (PVT) panels and a heat pump were designed and assessed. The results indicate that the solar-based system has an acceptable energy cost and the PVT-based system with a heat pump is environmentally superior. The biomass-fired system shows excellent efficiency.
Article
Green & Sustainable Science & Technology
Zihao Qi, Yingling Cai, Yunxiang Cui
Summary: This study aims to investigate the operational characteristics of the solar-ground source heat pump system (SGSHPS) in Shanghai under different operation modes. It concludes that tandem operation mode 1 is the optimal mode for winter operation in terms of energy efficiency.
Article
Green & Sustainable Science & Technology
L. Bartolucci, S. Cordiner, A. Di Carlo, A. Gallifuoco, P. Mele, V. Mulone
Summary: Spent coffee grounds are a valuable biogenic waste that can be used as a source of biofuels and valuable chemicals through pyrolysis and solvent extraction processes. The study found that heavy organic bio-oil derived from coffee grounds can be used as a carbon-rich biofuel, while solvent extraction can extract xantines and p-benzoquinone, which are important chemicals for various industries. The results highlight the promising potential of solvent extraction in improving the economic viability of coffee grounds pyrolysis-based biorefineries.
Article
Green & Sustainable Science & Technology
Luiza de Queiroz Correa, Diego Bagnis, Pedro Rabelo Melo Franco, Esly Ferreira da Costa Junior, Andrea Oliveira Souza da Costa
Summary: Building-integrated photovoltaics, especially organic solar technology, are important for reducing greenhouse gas emissions in the building sector. This study analyzed the performance of organic panels laminated in glass in a vertical installation in Latin America. Results showed that glass lamination and vertical orientation preserved the panels' performance and led to higher energy generation in winter.
Article
Green & Sustainable Science & Technology
Zhipei Hu, Shuo Jiang, Zhigao Sun, Jun Li
Summary: This study proposes innovative fin arrangements to enhance the thermal performance of latent heat storage units. Through optimization of fin distribution and prediction of transient melting behaviors, it is found that fin structures significantly influence heat transfer characteristics and melting behaviors.