Article
Chemistry, Multidisciplinary
Rui Zhang, Zheng Wang, Lin Zhu, Weixin Lv, Dahe Fan, Wei Wang
Summary: FeCoNi nanoparticles were encapsulated into carbonaceous matrixes to prepare catalyst FeCoNi@NC/CNTs-6. The catalyst showed excellent ORR activity and battery performance, providing theoretical and practical support for the enlarged applicability of similar catalysts.
Article
Chemistry, Multidisciplinary
Rui Zhang, Zheng Wang, Lin Zhu, Weixin Lv, Dahe Fan, Wei Wang
Summary: Carbonaceous transition metal catalysts have shown promise as alternatives to expensive Pt-based catalysts. This study investigates the ORR activity of FeCoNi nanoparticles encapsulated in carbonaceous matrixes. The results suggest that the unique 3D carbon-based matrix and the presence of pyridine N and Fe(Co/Ni)N-x group in FeCoNi@NC/CNTs-6 catalyst contribute to its enhanced ORR activity.
Review
Chemistry, Multidisciplinary
Bin Wu, Haibing Meng, Dulce M. Morales, Feng Zeng, Junjiang Zhu, Bao Wang, Marcel Risch, Zhichuan J. Xu, Tristan Petit
Summary: Nitrogen-doped carbons are a rapidly growing class of materials for oxygen electrocatalysis, offering low cost, environmental friendliness, excellent conductivity, and scalable synthesis. They have the potential to replace precious metal-based electrocatalysts and reduce costs in energy conversion and storage systems.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Jaclyn R. Lunger, Naomi Lutz, Jiayu Peng, Michal Bajdich, Yang Shao-Horn
Summary: This work elucidates the thermodynamic driving forces behind the reduction of metal oxides to metals and provides a promising process for the sustainable production of metals through the tuning of oxygen-metal interactions.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Jun Wu, Asad Mehmood, Guohui Zhang, Shuang Wu, Ghulam Ali, Anthony Kucernak
Summary: The study presents the synthesis of cobalt nanoparticles supported on nitrogen-doped carbon with high selectivity and activity for reducing oxygen into hydrogen peroxide in alkaline electrolyte, as well as low activity towards hydrogen peroxide disproportionation reaction.
Article
Chemistry, Multidisciplinary
Abdalaziz Aljabour, Houssein Awada, Luyang Song, He Sun, Simon Offenthaler, Farzaneh Yari, Matthias Bechmann, Markus Clark Scharber, Wolfgang Schoefberger
Summary: In this study, the trimetallic cobalt(II) triazole pyridine bis-[cobalt(III) corrole] complex (CoTP)-T-II[(CoC)-C-III](2)3 is explored for its application in OER and ORR catalysis. The complex exhibits remarkable physicochemical properties, fast charge transfer kinetics, electrochemical reversibility, and durability. It shows nearly 100% selective catalytic activity towards the two-electron transfer generated H2O2, with an ORR onset potential of 0.8 V vs RHE and a cycling stability of 50,000 cycles.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Jinhui Hao, Wei Luo, Shuaishuai Wang, Kun Zhao, Jianwen Hou, Longhua Li, Baoxin Ge, Wenshu Yang, Weidong Shi
Summary: This study reveals that discharge current in the low applied potential region can also lead to in situ electrochemical activation of nitrogen-doped nickel oxyhydroxide surface, significantly enhancing the oxygen evolution reaction. The formation of nitrogen and oxygen vacancies can be promoted through the structure-reforming ability of discharge current.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Materials Science, Multidisciplinary
Hui Liu, Zi-hui Liu, Jin-qiang Zhang, Lin-jie Zhi, Ming-bo Wu
Summary: This study synthesized carbon dots doped with both boron and nitrogen from low-cost petroleum coke, which showed better oxygen reduction reaction activity, stability, and methanol tolerance compared to carbon dots doped with only boron or nitrogen. Density functional theory calculations revealed that the co-doping of nitrogen and boron promoted the adsorption of O-2 molecules in the ORR process. This work provides new insights into the rational design of carbon nanomaterials for energy conversion applications.
NEW CARBON MATERIALS
(2021)
Article
Environmental Sciences
Yegeng Sun, Wei Zhang, Qing Wang, Ning Han, Avelino Nunez-Delgado, Yue Cao, Weimeng Si, Fagang Wang, Shaomin Liu
Summary: A mesoporous carbon derived from beancurd was used as a support for Au@Pd@Pt core-shell catalysts, showing higher ORR activity, specific, and mass activities compared to commercial Pt/C catalyst. The sample exhibited excellent durability after 20000 cycles of rapid testing, indicating promising potential for environmental applications.
ENVIRONMENTAL RESEARCH
(2021)
Article
Chemistry, Physical
Hua-Jie Niu, Shi-Yi Lin, Yu-Ping Chen, Jiu-Ju Feng, Qian-Li Zhang, Ai-Jun Wang
Summary: This study prepared hydrogel derived FeCo/FeCoP embedded in N, P-doped three-dimensional porous carbon framework (FeCo/FeCoP@NP-CF) through high-temperature pyrolysis and acid-etching. The resultant FeCo/FeCoP@NP-CF showed remarkable oxygen reduction reaction (ORR) characteristics, offering valuable guidelines for synthesis of non-noble metal catalysts in energy technologies.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Yuanjie Zheng, Peng Wang, Wei-Hsiang Huang, Chi-Liang Chen, Yanyan Jia, Sheng Dai, Tan Li, Yun Zhao, Yongcai Qiu, Geoffrey I. N. Waterhouse, Guangxu Chen
Summary: Electrochemical production of H2O2 is an eco-friendly and cost-effective method. Metal-doped carbon-based catalysts are commonly used for 2e-ORR due to their high selectivity. The role of metals and carbon defects in H2O2 production is still unclear. This study obtained a Co-N/O-C catalyst with a Faradaic efficiency greater than 90% in alkaline electrolyte by varying the Co loading in the pyrolysis precursor. Detailed studies revealed that carbon atoms in C-O-C groups at defect sites were the active sites for 2e-ORR in the Co-N/O-C catalysts. The direct contribution of cobalt single atom sites and metallic Co for the 2e-ORR performance was negligible, but Co played an important role in the pyrolytic synthesis of the catalyst.
Review
Chemistry, Multidisciplinary
Zhongmei Che, Yanan Yuan, Jianxin Qin, Peixuan Li, Yulei Chen, Yue Wu, Meng Ding, Fei Zhang, Min Cui, Yingshu Guo, Shuai Wang
Summary: This paper reviews the latest development of nonmetallic catalysts, such as single atoms doped with carbon materials and multi-doped carbon materials, in oxygen reduction reactions. It also prospects the remaining challenges and research directions of carbon-based nonmetallic catalysts.
Article
Engineering, Multidisciplinary
Zhenyang Li, Yingying Zhang, Pan Zhao, Huifen Li, Fang Fang, Wei Li, Jiangting Liu
Summary: Electrochemically deposited sensors and DNA biosensors are widely used in the food industry and various fields due to their high sensitivity, fast response, easy operation, no pollution, and low price. A study reported the use of a rare earth electrochemically deposited gadolinium ferricyanide thin film modified glassy carbon electrode, and investigated the electrocatalytic oxidation of guanine. Additionally, a rare earth terbium ferricyanide thin film modified glassy carbon electrode was also deposited and studied for its catalytic properties.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Chemistry, Applied
Javier Hernandez-Ferrer, Mario Gracia-Martin, Ana M. Benito, Wolfgang K. Maser, Enrique Garcia-Bordeje
Summary: ZIF8 was pyrolyzed at different temperatures and with adsorption of minor amounts of Co precursor, and the effect of carbonization temperature on texture, composition and ORR performance was systematically studied. Increasing pyrolysis temperature decreased N content but increased graphitic character. The trade-off between these two parameters resulted in an improvement of ORR performance, especially at 1000 oC. The adsorption of Co precursor further enhanced ORR performance, graphitic character and porosity of the resulting carbon material.
Article
Chemistry, Physical
Yang Gao, Debin Kong, Jiaxu Liang, Daliang Han, Bin Wang, Quan-Hong Yang, Linjie Zhi
Summary: The study introduces an inside-out doping method to prepare carbon submicrotubes for investigating the principles of designing dual-doping catalysts for ORR. By excluding interference factors and studying doping effects, it is found that N,P co-doping is more efficient than S- and B-doping in enhancing ORR catalytic activity. This research highlights the importance of both intrinsic chemical bonding and structural variation in determining the catalytic activity of dual-heteroatoms-doped carbons.
Article
Chemistry, Multidisciplinary
Chunxiao Li, Wanli Xu, Liangwen Ye, Jingjun Liu, Feng Wang
Summary: In this study, well-defined N-doped hollow carbons (NHCs) were successfully synthesized using an environmentally friendly ammonia-based hydrothermal synthesis method, with easily tunable shell thickness and excellent performance for oxygen reduction reaction. The enhanced battery performance can be attributed to the curvature-activated N-C moieties on the hollow carbon surface, proving to be the main active sites for ORR as evidenced by DFT calculations.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Jing Zhao, Jingjun Liu, Chun Jin, Feng Wang
Summary: This study demonstrates the preparation of atomically precise platinum with scalable atoms ranging from 1 to 43, showing higher oxygen reduction reaction performance and utilization rate of platinum. The method may reduce the amount of platinum required for PEMFCs, opening up new horizons in designing efficient PGM catalysts.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Yongxi Zan, Zhengping Zhang, Baoning Zhu, Meiling Dou, Feng Wang
Summary: Developing an ultrathin two-dimensional carbon nanosheet with more exposed N and P doping sites via ice/salt dual-template is an effective strategy for high-performance oxygen reduction reaction (ORR) electrocatalysts, which show outstanding performance in both alkaline and acidic electrolytes and in primary zinc-air batteries, offering new possibilities for non-precious metal electrocatalysts for ORR.
Article
Electrochemistry
Zepeng Jiang, Mengyue Liu, Feng Zhu, Weihao Song, Zhengping Zhang, Meiling Dou, Jin Niu, Feng Wang
Summary: This study investigates the energy-storage mechanisms of carbon electrodes in lithium-ion capacitors (LICs) using ginkgo leaf-derived porous carbons (GLPCs) as electrodes, achieving excellent performance by controlling porosities, heteroatoms, and defects. The assembled LIC with GLPC electrodes demonstrates high energy density, high power density, and long lifespan due to compatible electrode kinetics.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Jingyu Guan, Shaoxuan Yang, Tongtong Liu, Yihuan Yu, Jin Niu, Zhengping Zhang, Feng Wang
Summary: The development of platinum-based oxygen reduction reaction electrocatalysts with good resistance to poisoning is crucial for practical fuel cell applications. A surface-engineering approach using alloy PtBi shells to prepare nanostructured Pt alloys showed significantly improved ORR performance compared to benchmark Pt/C, with enhanced tolerance to methanol and carbon monoxide. The observed enhancement in performance is attributed to increased compressive strain and charge displacement via Pt-Bi bonding.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Electrochemistry
Daping Qiu, Cheng Yue, Chuang Qiu, Liying Xian, Min Li, Feng Wang, Ru Yang
Summary: A three-dimensional dumpling-like glyururil-derived porous carbon@RGO composite with high reversible specific capacity, superb rate capability, and long lifespan is synthesized. The excellent sodium-ion storage properties of the composite are revealed through in-depth mechanism analysis.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Yuanyuan Tian, Feng Li, Ye Song, Jingjun Liu, Jing Ji, Feng Wang
Summary: Metallic photoelectrocatalysts with wide light absorption range and fast hydrogen evolution reaction kinetics can be used as the next generation of catalysts. In this study, molybdenum nitride was synthesized on metal molybdenum substance via an in-situ growth method. The photocatalytic HER rate of Mo3N2 reached 158.78 μmol h(-1) g(-1). Furthermore, the Mo3N2-MoS2/Mo foil was prepared to improve the photoelectrocatalytic performance, showing a 1.5 times enhancement in photocurrent density compared to Mo3N2 alone.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Nanoscience & Nanotechnology
Yaxin Duan, Haitao Liu, Huabing Zhang, Shaojie Ke, Shuaize Wang, Meiling Dou, Feng Wang
Summary: Poor electronic conductivity and low intrinsic electrocatalytic activity limit the direct application of metal organic frameworks (MOFs) in electrocatalysis. This study presents a conductive two-dimensional pi-d conjugated Ni and Co bimetal organic framework nanorod decorated with Co3O4 nanoparticles, which greatly enhances the electrocatalytic activity.
Article
Chemistry, Physical
Tongtong Liu, Shaoxuan Yang, Jingyu Guan, Jin Niu, Zhengping Zhang, Feng Wang
Summary: This study demonstrates a facile strategy to fabricate defect-rich yttrium ruthenate oxides by liquid nitrogen quenching, which preserves a large number of defects, including oxygen vacancies, grain boundaries, pores, and surficial disorder, as active sites for oxygen evolution. The resulting material shows excellent catalytic activity and high electrochemical stability, with potential applications in energy conversion and storage devices.
Article
Nanoscience & Nanotechnology
Feibin Wei, Tongtong Liu, Haixing Zhang, Zhengping Zhang, Feng Wang
Summary: This study improves the corrosion resistance and service life of Ti-based anodes by preparing a compact interlayer Ti-STN containing ternary metal oxides, and provides a new approach for the development of industrial electrolysis and electrochemical energy conversion devices.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Yongzheng Shi, Na Yang, Jin Niu, Shubin Yang, Feng Wang
Summary: A rubber-derived lithium-conducting elastomer with high resilience and improved ionic conductivity has been developed by sulfur vulcanization of nitrile butadiene rubber with a polymerizable ionic liquid. The elastic lithium-conductor exhibits high resilience, excellent cyclic durability, and high room-temperature ionic conductivity, leading to a solid-state lithium/LiFePO4 battery with high capacity and capacity retention.
Article
Chemistry, Physical
Haitao Liu, Shaoxuan Yang, Jinyuan Ma, Meiling Dou, Feng Wang
Summary: This paper reports a method for synthesizing surface-engineered cobalt phosphide (CoxP) electrocatalyst, which has high-density reactive sites and facilitated charge/mass transport, leading to outstanding catalytic activity and excellent electrochemical durability towards oxygen evolution reaction.
Article
Electrochemistry
Rui Ma, Zhengping Zhang, Tomokazu Iyoda, Feng Wang
Summary: In this work, well-defined pyridinium-conjugated graphite sheets were synthesized via electrochemical grafting, exhibiting enhanced electrocatalytic performance for oxygen reduction and high selectivity for H2O2 production. The positive charge on the adjacent carbon atoms, induced by intramolecular charge transfer, leads to the improved catalytic activity. The functional groups on pyridinium also affect the yield of H2O2. The proposed electrochemical grafting provides a pyrolysis-free strategy for precise regulation of nitrogen-doped carbon materials and has great potential for various applications.
Article
Engineering, Environmental
Feng Zhu, Weishan Cao, Weihao Song, Jiaying Peng, Na Yang, Jin Niu, Feng Wang
Summary: In this study, porous carbons with honeycomb-like hierarchical structures and doped with P/N heteroatoms were prepared using a low-cost fish scale and K3PO4 as precursor and auxiliary. These materials showed high energy density, high power density, and long lifetime.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Jing Chen, Shaoxuan Yang, Zhengping Zhang, Feng Wang
Summary: This study successfully synthesized a hierarchically structured electrocatalyst from biological waste, which exhibited superior activity for both oxygen reduction and oxygen evolution reactions. The zinc-air batteries assembled with this catalyst showed excellent electrochemical performance and long-term cycling stability. This integrated strategy provides an effective way for the development of novel nanostructured electrocatalysts from biological waste.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
