Article
Chemistry, Physical
Lei Wang, Xiao-Bin Xie, Qing Xu, Duan-Ping Huang, Min Chen, Kai Zhao, Dong-Chu Chen, Feng Zhang
Summary: In this study, Ce0.8Sm0.2O1.9 oxygen-ion conductor was infiltrated into the porous electrode backbone of La1.8Sr0.2NiO4+delta to enhance the electrocatalytic properties for the oxygen reduction reaction. The infiltration of Ce0.8Sm0.2O1.9 nanoparticles onto La1.8Sr0.2NiO4+delta grains improved the overall reaction kinetics with the assistance of oxygen vacancies. The 10% Ce0.8Sm0.2O1.9 infiltrated electrode showed significantly improved electrocatalytic properties, with reduced polarization resistance and overpotential, and enhanced exchange current density.
Article
Nanoscience & Nanotechnology
Guodong Yang, Shihong Wang, Yujie Wu, Hao Zhou, Wei Zhao, Shuxian Zhong, Lichun Liu, Song Bai
Summary: Utilizing solar and mechanical vibration energy for catalytic CO2 reduction and H2O oxidation can generate renewable energy and mitigate climate change. However, charge recombination and sluggish surface reaction hinder the practical applications. This study proposes a dual cocatalyst strategy to improve the piezophotocatalytic performance, demonstrating significantly enhanced activities in CO and O2 generation. This strategy opens a door for better coupling of photocatalysis and piezocatalysis to promote CO2 conversion with H2O.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Alexander Stangl, Adeel Riaz, Laetitia Rapenne, Jose Manuel Caicedo, Juan de Dios Sirvent, Federico Baiutti, Carmen Jimenez, Albert Tarancon, Michel Mermoux, Monica Burriel
Summary: La2NiO4 thin film electrodes with a nano-architectured structure exhibit enhanced oxygen exchange activity, achieved by tailoring morphology to vertically gapped columns. The increased surface area and opening of different surface terminations significantly enhance the total exchange activity in the films.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Kevin Iputera, Yu-Lin Fu, Lidong Li, Shu-Fen Hu, Da-Hua Wei, Ru-Shi Liu
Summary: In this study, an H2O-wash method for regenerating air cathodes and characterizing them was reported. Two types of air cathodes were successfully regenerated without capacity fading, and structural and chemical/electrochemical changes were easily observed.
Article
Agricultural Engineering
Mickael Rimboud, Mohamed Barakat, Wafa Achouak, Alain Bergel, Marie-Line Delia
Summary: The use of hypersaline electrolytes can enhance the efficiency of microbial fuel cells, but the bottleneck of O-2 reducing cathodes still needs to be addressed. By designing efficient halotolerant microbial cathodes, especially focusing on Gammaproteobacteria strains related to Thiohalobacter thiocyanaticus, this issue can be overcome.
BIORESOURCE TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Yitao Song, Yewang Peng, Shuang Yao, Peng Zhang, Yujie Wang, Jianmin Gu, Tongbu Lu, Zhiming Zhang
Summary: A simple and effective method for constructing highly efficient oxygen reduction catalysts with trace amount of isolated cobalt was developed by pyrolysis of Co-centered polyoxometalate@metal-organic framework (Co-POM@MOF). The resulting Co-W-NC composite catalysts exhibit excellent durability and high performance for oxygen reduction reactions.
CHINESE CHEMICAL LETTERS
(2022)
Article
Chemistry, Inorganic & Nuclear
Xiuli Wang, Xiaodong Liu, Na Xu, Xiaohui Liu, Yanyan Guo, Xiaoyan Zhang, Xiaohui Li
Summary: A new [P4MoV O-6(31)](12-)-based cobalt-containing complex was synthesized for the visible-light-driven conversion of aniline to azobenzene. The conversion rate was 97% with a selectivity of 96% of azobenzene, and the reaction could be achieved at room temperature.
INORGANIC CHEMISTRY
(2023)
Article
Electrochemistry
Eliran R. Hamo, Brian A. Rosen
Summary: Cost reduction and durability are key challenges for cathode catalysts in PEMFCs. Transition metal carbides, such as Mo2C, are being explored as potential replacements for carbon supports, with surface tantalum modification showing improved corrosion resistance and activity. Ta-modified Pt/Mo2C cathodes demonstrate enhanced durability and resistance to degradation, making Ta magnetron sputtering a viable option for enhancing PEMFC performance.
Article
Chemistry, Physical
Xiu Liu, Yajie Chen, Qi Wang, Longge Li, Lizhi Du, Guohui Tian
Summary: The fabrication of surface oxygen vacancy-enriched ZnFe2O4@TiO2 double-shell hollow heterostructure nanospheres coupled with spatially separated CoOx and Au-Cu bimetallic cocatalysts promotes the separation of photoinduced charge carriers and enhances CO2 adsorption and activation efficiency, resulting in improved gas-phase photocatalytic CO2 reduction activity. The optimized hybrid catalyst with a Au/Cu ratio of 1:1 exhibits high CH4 yield and selectivity, demonstrating the potential for rational photocatalyst design to enhance CO2 conversion and CH4 selectivity.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Energy & Fuels
Hemam Rachna Devi, Boon Chong Ong, Xin Zhao, Zhilli Dong, Karuna Kar Nanda, Zhong Chen
Summary: Ti doping and N-2 treatment increase charge carrier density, leading to enhanced photocurrent; TiO2 passivation boosts photovoltage, shifting onset potential cathodically by approximately 170 mV; FeOOH cocatalyst decoration improves reaction kinetics and overall water oxidation performance in photoassisted solar water splitting.
Article
Chemistry, Applied
Wei Zhang, Yun Hang Hu
Summary: This article reviews recent advances in the design and fabrication of cathodes for efficient solid oxide fuel cells (SOFCs), including engineering cathode microstructures, fabrication techniques for cathode layers, and strategies to address segregation and poisoning issues.
Article
Chemistry, Physical
Hassan Javed, Shubashree Pani, Jithin Antony, Mariappan Sakthivel, Jean-Francois Drillet
Summary: The research investigated the synthesis of carbon spheres via a soft-template route and evaluated two different preparation methods, obtaining the best results under specific conditions for each method.
Review
Chemistry, Physical
Tao Chen, Baixue Ouyang, Xiaowen Fan, Weili Zhou, Weifang Liu, Kaiyu Liu
Summary: This article summarizes the research progress of transition-metal oxides in sodium-ion batteries and discusses the existing challenges and strategies to overcome them. It aims to provide guidance for the development of metal oxides in the next stage.
Article
Chemistry, Multidisciplinary
Jesus Barrio, Junyi Li, Menny Shalom
Summary: Carbon nitride materials (CN) are widely studied photocatalysts, but their low porosity and fast electron-hole recombination limit their photoelectric performance. This article reviews the use of supramolecular crystals as precursors for CN, discussing their influence on morphology and porosity, and the formation of single atoms and heterojunctions when using metal-organic crystals. The performance of CN photoanodes derived from crystals and the current challenges in the field are also discussed.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Applied
Jiajia Huang, Yuying Li, Ruikuan Xie, Jianwei Li, Zhihong Tian, Guoliang Chai, Yanwu Zhang, Feili Lai, Guanjie He, Chuntai Liu, Tianxi Liu, Dan J. L. Brett
Summary: This study presents a unique 'flower-like' zinc cobaltite cathode material with enriched oxygen vacancies for aqueous zinc-ion batteries, demonstrating enhanced electronic conductivity and Zn2+ diffusion. The batteries exhibit impressive specific capacity, high energy and power densities, outperforming most reported aqueous ZIBs. The flexible solid-state pouch cell also shows extremely stable capacity under bending states, showcasing the potential for low-cost and eco-friendly energy storage materials.
JOURNAL OF ENERGY CHEMISTRY
(2021)
