Review
Chemistry, Physical
Qizheng An, Jingjing Jiang, Weiren Cheng, Hui Su, Yong Jiang, Qinghua Liu
Summary: This review classifies dual-atom catalysts (DACs) based on their configurations and metal sites and discusses their synthetic strategies, characterization techniques, and applications in various electrocatalytic reactions. DACs, with higher metal loading and more flexible active sites compared to single-atom catalysts, exhibit improved catalytic performance.
Review
Chemistry, Physical
Qian Zhang, Lufan Zheng, Fangwei Gu, Jinting Wu, Jian Gao, Yong-Chao Zhang, Xiao-Dong Zhu
Summary: This article systematically describes the synthesis, characterization and catalytic mechanism of single-atom catalysts (SACs) for acidic oxygen reduction reactions (ORR) to produce hydrogen peroxide (H2O2). It highlights important activity descriptors, particularly the regulation methods for binding energy of oxygenated intermediates. The challenges and outlooks of using SACs for acidic ORR to H2O2 are also discussed.
Review
Chemistry, Physical
Yanan Zhou, Jing Li, Xiaoping Gao, Wei Chu, Guoping Gao, Lin-Wang Wang
Summary: The oxygen evolution reaction (OER) is a major bottleneck in the electrolytic water-splitting for hydrogen generation due to its sluggish kinetics. Constructing single-atom catalysts (SACs) on two-dimensional materials has become an important research direction to enhance OER performance.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Review
Chemistry, Multidisciplinary
Xu Guangyuan, Liu Qin, Yan Huan
Summary: Single-atom catalysis is a hot spot in the field of catalysis due to its unique geometries and catalytic performance, reducing costs in industrial processes. SACs have been widely applied in gas-solid reactions, organic reactions, and electro-catalysis.
CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
(2022)
Review
Chemistry, Physical
Yalong Li, Xiaolong Xu, Zizheng Ai, Baoguo Zhang, Dong Shi, Mingzhi Yang, Haixiao Hu, Yongliang Shao, Yongzhong Wu, Xiaopeng Hao
Summary: The development of high-performance electrocatalysts is crucial for the widespread adoption of sustainable energy technologies. Single-atom catalysts (SACs) have gained significant attention due to their maximum atom utilization and excellent electrocatalytic performance. However, the low loading of single metal atoms, caused by their high surface energy, hinders their practical applications. This article provides an up-to-date review on the progress of SACs, covering noble metal SACs, transition metal SACs, single-atom alloy SACs, and double metal SACs. The advantages and disadvantages of synthesis strategies, including wet chemistry, atomic layer deposition, and high-temperature pyrolysis, are discussed. Furthermore, new research directions are proposed to achieve high-performance SACs, aiming to enable their widespread applications.
Review
Chemistry, Physical
Chunyan Yang, Xuke Ma, Jiaqi Zhou, Yafei Zhao, Xu Xiang, Huishan Shang, Bing Zhang
Summary: This review systematically summarizes recent progress on advanced MOF-derived carbon-based electrocatalysts for ORR. It focuses on synthetic methods, engineering mechanisms, and their practical applications in fuel cells and metal-air batteries. The challenges and future perspectives for MOF-derived carbon-based electrocatalysts are also discussed.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Kun Wang, Zhenjiang Lu, Jing Lei, Zhaoyang Liu, Yizhao Li, Yali Cao
Summary: A versatile molten salt-assisted pyrolysis strategy was developed to construct ultrathin, porous carbon nanosheets supported Co single-atom catalysts (SACs). The SACs exhibited excellent bifunctional activity and stability and outperformed commercial catalysts in metal-air batteries.
Review
Materials Science, Multidisciplinary
Zhixue Ma, Lijuan Niu, Wenshuai Jiang, Chenxi Dong, Guohua Liu, Dan Qu, Li An, Zaicheng Sun
Summary: The paper summarizes recent developments in effective synthetic methodology for single-atom catalysts, highlighting the synergistic coupling interaction between catalytic activity and single-atom catalysts, and discusses current challenges and future opportunities.
JOURNAL OF PHYSICS-MATERIALS
(2021)
Review
Chemistry, Physical
Hongzhou Yang, Run Shi, Lu Shang, Tierui Zhang
Summary: Porphyrin, an important biomimetic catalyst, shows high catalytic efficiency but has limitations such as decomposition and non-recyclability. With the development of single-atom catalysis, porphyrin-like single-atom catalysts are widely studied and possess good recyclability compared to traditional porphyrin catalysts. Porphyrin-like single-atom catalysts exhibit promising performance in various reactions.
Article
Engineering, Environmental
Amit Chaturvedi, Patit Paban Kundu
Summary: Microbial fuel cell technology utilizes organic substrates and oxygen to generate power, with the performance relying on the catalysts used for the oxygen reduction reaction. Various types of catalysts, including electrocatalysts, photo-electrocatalysts, and biocatalysts, have been evaluated for their electrochemical properties, catalytic effectiveness, stability, and power generation in MFCs.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Review
Chemistry, Physical
Ying-Yun Yan, Wen-Jun Niu, Wei-Wei Zhao, Ru-Ji Li, Er-Peng Feng, Bing-Xin Yu, Bai-Kun Chu, Chen-Yu Cai
Summary: In this review, the latest progress, major achievements, and prospects of transition metal-supported carbon with different dimensions for highly efficient electrochemical H2O2 preparation via the 2e- ORR process are summarized. The rational design principles and synthetic strategies of transition metal-supported carbon catalysts are systematically introduced while the representative advances, the identification of active sites, and their possible catalytic mechanisms toward the highly efficient electrochemical H2O2 production are discussed, and the challenges and prospects are also summarized.
ADVANCED ENERGY MATERIALS
(2023)
Review
Chemistry, Physical
Madiha Rafiq, Xiaozhen Hu, Zhiliang Ye, Abdul Qayum, Hong Xia, Liangsheng Hu, Fushen Lu, Paul K. Chu
Summary: Researchers summarized the importance of hexagonal boron nitride (h-BN) as a two-dimensional material in the field of green energy applications, and introduced its potential applications in energy conversion. The article discussed modification strategies to convert insulating h-BN into conductive materials and its progress and applications as an electrocatalyst.
Review
Chemistry, Multidisciplinary
Yuting Luo, Zhiyuan Zhang, Manish Chhowalla, Bilu Liu
Summary: The electrochemical water splitting technology is crucial for achieving global carbon neutrality. High-performance electrocatalysts that can operate at high current densities are essential for the industrial implementation of this technology. Recent advancements in this field have led to the development of various catalysts designed specifically for high current densities (> 200 mA cm(-2)). This article discusses these recent advances and summarizes the key factors that influence the catalytic performance in high current density electrocatalysis, including catalyst dimensionality, surface chemistry, electron transport path, morphology, and catalyst-electrolyte interaction. It highlights the importance of a multiscale design strategy that considers these factors comprehensively for developing high current density electrocatalysts. The article also provides insights into the future directions of this emerging field.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jia Zhang, Hao Chen, Shoujie Liu, Li-Dong Wang, Xue-Feng Zhang, Jun-Xi Wu, Li-Hong Yu, Xiao-Han Zhang, Shengliang Zhong, Zi-Yi Du, Chun-Ting He, Xiao-Ming Chen
Summary: Advances in single-atom catalysts provide a new solution for designing efficient electrocatalysts. This study demonstrates the use of molecule-spaced single-atom catalysts to significantly improve the active-site numbers and mass transfer. One of the molecule-spaced single-atom catalysts exhibits outstanding mass activity and long-term durability under industrial conditions for oxygen evolution reaction.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Review
Chemistry, Physical
Lizhen Liu, Mingtao Li, Fang Chen, Hongwei Huang
Summary: This article introduces the application and performance advantages of single-atom catalysts in CO2 reduction, including their types, structures, and synthesis methods. Regarding the reaction mechanism of CO2 reduction, the high performance of single-atom catalysts in electrocatalysis, photocatalysis, and thermocatalysis is discussed, and strategies to improve their performance are summarized. Finally, the challenges and prospects of single-atom catalysts in CO2 catalytic conversion are presented.
Article
Materials Science, Multidisciplinary
Qiang Yi, Wenqiang Zhang, Tianyuan Wang, Junxing Han, Chunwen Sun
Summary: A nonflammable gel is prepared and applied as an interfacial layer to improve the performance of solid-state batteries. The prepared multilayer hybrid electrolyte exhibits a wide electrochemical window, high ionic transference number, and ionic conductivity. Batteries assembled with this electrolyte show low overpotential and long cycle life.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Liang Lu, Chunwen Sun, Jian Hao, Zelin Wang, Sergio F. Mayer, Maria Teresa Fernandez-Diaz, Jose Antonio Alonso, Bingsuo Zou
Summary: This work studies magnesium-doped Na3Zr2Si2PO12 as a solid electrolyte for solid-state Na-CO2 batteries, and utilizes a composite electrolyte composed of highly conductive Na3.2Zr1.9Mg0.1Si2PO12 and high processability PVDF-HFP to assemble a solid-state Na-CO2 battery, demonstrating promising performance.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Electrochemistry
Bohao Du, Chengzhe Shen, Tianyuan Wang, Chunwen Sun
Summary: A flexible solid-state lithium battery has been fabricated with V2O5 nanowire-carbon nanotubes (CNT) composite paper as cathode and silver nanowire/lithium composite as anode. The battery exhibits high discharge capacity and cycle stability, with stable cycling for more than 500 cycles at 0.5 C and an average discharge capacity of 120.9 mAh g-1. This work provides a guide for designing flexible solid-state lithium batteries.
ELECTROCHIMICA ACTA
(2023)
Article
Energy & Fuels
Hao Yuan, Liang Lu, Chunwen Sun
Summary: A composite solid-state electrolyte consisting of Ca-doped Na3Zr2Si2PO12 and PVDF-HFP is synthesized, which shows high ionic conductivity and excellent durability. A solid-state Na-CO2 battery with this composite electrolyte delivers high discharge-specific capacity and cycling stability.
Review
Electrochemistry
Zelin Wang, Chunwen Sun, Liang Lu, Lifang Jiao
Summary: Solid state Na-CO2 batteries are a promising energy storage system that utilizes excess CO2 for electrochemical energy storage. Despite their high theoretical energy densities, the practical application of Na-CO2 battery technology faces challenges such as short cycle life, high charging potential, poor rate performance, and lower specific full discharge capacity.
Article
Chemistry, Analytical
Yaling Gao, Tongrui Zhang, Yuezhen Mao, Jingyu Wang, Chunwen Sun
Summary: In this study, CoFeRu-LDH catalyst with bifunctional properties was successfully synthesized by hydrothermal method and partial oxidation, resulting in oxides/LDH. The catalyst exhibited excellent bifunctional activity in zinc-air batteries, with a high voltage difference and good cycle stability, demonstrating its potential practical application.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Tianyuan Wang, Fusheng Yin, Yuling Fang, Chunwen Sun
Summary: In this study, researchers prepared a low-cost fibrous porous nitrogen-doped carbon material from waste cigarette butts to address the issues of lithium-oxygen batteries. The material exhibited a rich porous structure and nitrogen doping, which enhanced oxygen diffusion and provided ample space for discharge products. The findings offer a cost-effective solution to improve the cathode catalyst problem of Li-O-2 batteries, as well as enhance cycling stability and environmental protection.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Review
Electrochemistry
Kaiyong Tuo, Chunwen Sun, Shuqin Liu
Summary: Rechargeable all-solid-state batteries (ASSBs) are the future devices for electrochemical energy storage, while the development of solid-state electrolytes (SSEs) is crucial. Halide SSEs have gained significant attention due to their high ionic conductivity, chemical stability, and mechanical deformability. This review provides a critical overview of the development, synthesis, stability, and challenges of halide SSEs. Design strategies for enhancing ionic conductivity, chemical stability, and in situ/operando characterization techniques are discussed. Interface issues, cost concerns, and scalable processing challenges for practical applications are also addressed.
ELECTROCHEMICAL ENERGY REVIEWS
(2023)
Article
Electrochemistry
Yuling Fang, Tianyuan Wang, Chunwen Sun
Summary: By designing an artificial interfacial layer, the safety and wide application potential of lithium metal batteries have been improved.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Jingwen Ma, Tianai Zhang, Fusheng Yin, Jun Wang, Zhijun Zhang, Chunwen Sun
Summary: Interface engineering improves the performance of electrochemical catalysts for hydrogen evolution reaction. Mo2C/MoP-NPC heterostructure deposited on co-doped carbon substrate is fabricated, with optimized electronic structure achieved by adjusting phytic acid and aniline ratio. The Mo2C/MoP interface has an electron interaction, optimizing the hydrogen adsorption free energy and enhancing the reaction performance. Mo2C/MoP-NPC exhibits low overpotentials and superior stability, making it a promising candidate for green energy development.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Energy & Fuels
Wei Zhang, Fusheng Yin, Zhenhui Cheng, Suping Peng, Chunwen Sun
Summary: To address the performance degradation of solid oxide fuel cells (SOFCs) caused by carbon deposition, a new anode with nanostructured heterogeneous interfaces was developed by integrating 0.38 wt% Sn and 0.19 wt% MgO into Ni-SDC for hydrocarbon-fueled SOFCs. The cell with this anode showed a peak power density of 374 mW cm-2 and excellent long-term stability for 100 hours in humidified methane at 700 degrees C. The improved performance was attributed to the decreased rate of carbon deposition, increased activation barrier for methane cracking, prevention of nickel carbide formation, and enhanced rate of carbon removal.
Article
Chemistry, Physical
Kaiyong Tuo, Chunwen Sun, C. A. Lopez, Maria Teresa Fernandez-Diaz, Jose Antonio Alonso
Summary: We report a new mixed-metal halide superionic conductor Li3-xY1-xHfxCl6 (0≤x<1) with high ionic conductivity up to 1.49 mS cm(-1) at room temperature. By using experimental characterization techniques and calculations, we investigate the influence of aliovalent substitution of Hf for Y on the local structural environment and lithium-ion transport in Li3YCl6. The presence of prevalent cation site disorder and defect structure as well as the synthetically optimized (Y/Hf)Cl-6 framework strongly enhances the transport properties.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Review
Chemistry, Multidisciplinary
Hexiang Chen, Chunwen Sun
Summary: This paper reviews the latest research advances of lithium-rich manganese oxide (LRMO) cathode materials, including crystal structure, electrochemical reaction mechanism, existing problems, and modification strategies. It focuses on recent progress in modification methods, such as surface modification, doping, morphology and structure design, binder and electrolyte additives, and integration strategies. Additionally, it introduces relatively novel modification methods, such as novel coatings, grain boundary coating, gradient design, single crystal, ion exchange method, solid-state batteries, and entropy stabilization strategy. The paper concludes by summarizing the existing problems in LRMO development and suggesting further research perspectives.
CHEMICAL COMMUNICATIONS
(2023)
Review
Chemistry, Multidisciplinary
Wei Zhang, Jialu Wei, Fusheng Yin, Chunwen Sun
Summary: Solid oxide fuel cells (SOFCs) provide an environmentally friendly solution for efficient power supply anywhere and anytime. However, the deposition of carbon on conventional SOFC anodes during operation with hydrocarbon fuels causes a decline in cell performance. This review discusses the carbon deposition process, detection methods, and strategies to solve anode carburization, with a focus on alternative anode materials. Future research directions, including the potential application of single-atom based anode catalysts, are also proposed.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Nanoscience & Nanotechnology
Tianyuan Wang, Yuezhen Mao, Jianbing Wang, Chunwen Sun
Summary: By constructing a nickel-based catecholate conductive interlayer between the solid electrolyte and lithium metal, the growth of lithium dendrites in lithium metal batteries can be controlled, and the phenomenon of apical growth can be avoided. Meanwhile, the uniform deposition of lithium metal is achieved by the pores and nanochannels, which reduces the occurrence of dead lithium.
ACS APPLIED MATERIALS & INTERFACES
(2023)
