Review
Nanoscience & Nanotechnology
Linjie Zhang, Na Jin, Yibing Yang, Xiao-Yong Miao, Hua Wang, Jun Luo, Lili Han
Summary: This review provides an in-depth and comprehensive understanding of axially coordinated single-atom catalysts (SACs), including their recent advances in synthetic strategies and electrocatalytic applications, as well as the challenges and outlooks in this research field.
NANO-MICRO LETTERS
(2023)
Article
Chemistry, Physical
Zhengkun Yang, Xiaolin Wang, Mengzhao Zhu, Xinyan Leng, Wenxing Chen, Wenyu Wang, Qian Xu, Li-Ming Yang, Yuen Wu
Summary: This study successfully synthesized Mn ISASC using a solid phase thermal diffusion strategy, exhibiting outstanding oxygen reduction activity and stability, providing an effective pathway for researchers to improve catalytic performance.
Article
Chemistry, Multidisciplinary
Yongguang Zhang, Jiabing Liu, Jiayi Wang, Yan Zhao, Dan Luo, Aiping Yu, Xin Wang, Zhongwei Chen
Summary: In this study, a novel single atom catalyst and unique carbon support were synthesized to improve the performance of lithium-sulfur batteries, mitigate the shuttle effect of polysulfides, and enhance the kinetics of redox reactions, resulting in outstanding battery performance.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Chuqian Xiao, Ling Cheng, Yihua Zhu, Gengchao Wang, Luyang Chen, Yating Wang, Rongzhen Chen, Yuhang Li, Chunzhong Li
Summary: The study synthesized a single-atom catalyst that can achieve high H2O2 production rates at high current densities, outperforming other reported catalysts in electrochemical synthesis.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Analytical
Fuad Abduro Bushira, Shimeles Addisu Kitte, Haijuan Li, Lirong Zheng, Ping Wang, Yongdong Jin
Summary: This study successfully achieved simultaneous electrochemical detection of dopamine and uric acid using Fe-N5 single atom catalyst on graphene, showing excellent linear characteristic responses and low detection limits, as well as good stability and repeatability, and has been applied in human serum samples.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Mariana Darii, Jan van Leusen, Victor Ch. Kravtsov, Yurii Chumakov, Karl Kramer, Silvio Decurtins, Shi-Xia Liu, Paul Kogerler, Svetlana G. Baca
Summary: Ultrasound-assisted synthesis was used to prepare a new nonanuclear SMM, [Mn7Dy2O6(OH)(OMe)(2)(piv)(8)(dea)(2)(MeOH)(2)(H2O)(2)](NO3)& BULL;H2O, with a {Mn-6 (MnDy2)-Mn-III-Dy-IV (III)}(28+) core based on vertex-sharing double-cubane units.
CRYSTAL GROWTH & DESIGN
(2023)
Review
Chemistry, Physical
Peng Zhu, Xiang Xiong, Dingsheng Wang
Summary: Hydrogen production from water splitting using renewable electric energy is a key topic for achieving a carbon neutral future. Single atom catalysts (SACs) have emerged as a new frontier in catalysis, particularly in the hydrogen evolution reaction (HER), due to their high activity and excellent chemical selectivity. However, the influence of the neighboring coordinated atoms from the supports is often neglected in the classification of SACs. This review proposes a new classification method based on the type of supports and highlights the importance of the metal-support interaction and coordination environment. Structural designing strategies are also proposed to address the current challenges in SACs for HER.
Article
Biochemistry & Molecular Biology
Adedamola A. Opalade, Elizabeth N. Grotemeyer, Timothy A. Jackson
Summary: Manganese lipoxygenase (MnLOX) is an enzyme that converts polyunsaturated fatty acids to alkyl hydroperoxides, with proposed mechanisms involving hydrogen atom transfer from a substrate C-H bond and regeneration of the active-site Mn-III-hydroxo complex. Kinetic data analysis shows that the Mn-III-hydroxo complex oxidizes TEMPOH faster due to weak Mn-III-N(pyridine) bonds leading to higher reduction potential. Additionally, the Mn-III-alkylperoxo complex reacts with water to mimic the ligand substitution step for MnLOX.
Article
Chemistry, Physical
Xinyu Song, Yang Shi, Zelin Wu, Bingkun Huang, Xinhao Wang, Heng Zhang, Peng Zhou, Wen Liu, Zhicheng Pan, Zhaokun Xiong, Bo Lai
Summary: This study explores the discriminative activities and mechanisms for activation of O-O bond in peroxy compounds via single-atom catalysts (SACs) with higher coordination numbers (M-N5). The atomic catalyst (Fe-SAC) with Fe-N5 as the active center was constructed, effectively activating peroxymonosulfate (PMS), peroxydisulfate (PDS), and hydrogen peroxide (H2O2). The study demonstrates the degradation efficiencies of acyclovir are related to the O-O bond length in different peroxy compounds, and reveals the discriminative mechanisms for activation of O-O bond in different Fenton-like systems.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2024)
Article
Chemistry, Inorganic & Nuclear
Ayuk M. Ako, Christopher E. Anson, Rodolphe Clerac, Anthony J. Fitzpatrick, Helge Mueller-Bunz, Anthony B. Carter, Grace G. Morgan, Annie K. Powell
Summary: The reaction of MnCl2.4H2O and CaCl2 with the ligand 2,6-bis(hydroxymethyl)-4-methylphenol resulted in heterometallic coordination clusters with different nuclearities, depending on the Mn:Ca ratio. The clusters exhibited interesting magnetic properties, with moderate antiferromagnetic coupling observed in one cluster and allowing for an experimental estimate of the coupling in the original cluster.
Article
Multidisciplinary Sciences
Dahong Huang, Kali Rigby, Weirui Chen, Xuanhao Wu, Junfeng Niu, Eli Stavitski, Jae-Hong Kim
Summary: Atomic dispersion of metal catalysts on a substrate increases their atomic efficiency. However, the absence of neighboring metal sites can negatively impact the catalytic performance of single-atom catalysts (SACs) in certain industrial reactions. Metal ensemble catalysts (M-n) are a promising alternative to overcome this limitation. This study demonstrates that manipulating the coordination environment (CE) of M-n can enhance their catalytic activity.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Engineering, Environmental
Fenli Liu, Yujing Ren, Jianglin Duan, Pengcheng Deng, Jianyu Lu, Huibin Ge, Xin Liu, Qixing Xia, Haifeng Qi, Na Yang, Yong Qin
Summary: A novel Fe-1/C3N4 single atom catalyst with Fe-N-5 active site was constructed. The Fe-N-5 site exhibited unprecedented activity in Fenton-like reactions, surpassing Fe-N-4/C catalysts by at least one order of magnitude. This discovery provides a new approach for designing efficient catalysts.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Chao Xu, Yan-Ping Zhang, Tian-Long Zheng, Zhi-Qiang Wang, Ye-Min Zhao, Peng-Peng Guo, Chen Lu, Kun-Zu Yang, Ping-Jie Wei, Qing-Gang He, Xue-Qing Gong, Jin-Gang Liu
Summary: Promoting catalyst performance for oxygen reduction reaction (ORR) in energy conversion devices by manipulating the structure of catalytic active sites has been challenging. In this study, Fe-N-C single-atom catalysts (SACs) with shrinkable Fe-N-5-C-11 sites were prepared and showed significantly improved catalytic activity for ORR compared to SACs with normal Fe-N-5-C-12 sites. The C@PVI-(TPC)Fe-800 catalyst, prepared by pyrolyzing an axial-imidazole-coordinated iron corrole precursor, exhibited positive shifted half-wave potential and higher peak power density than the iron porphyrin-derived counterpart in KOH electrolyte and Zn-air batteries. X-ray absorption spectroscopy (XAS) analysis revealed a contracted Fe-N-5-C-11 structure with higher iron oxidation state in C@PVI-(TPC)Fe-800 than the porphyrin-derived counterpart. Density functional theory (DFT) calculations demonstrated that C@PVI-(TPC)Fe-800 possessed a higher HOMO energy level, which enhanced O-2 adsorption and O-O bond activation. This work provides a new approach to tune the active site structure of SACs and has significant implications for catalyst design in energy conversion devices.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Jie Miao, Jian Song, Junyu Lang, Yuan Zhu, Jie Dai, Yan Wei, Mingce Long, Zongping Shao, Baoxue Zhou, Pedro J. J. Alvarez, Lizhi Zhang
Summary: Five-nitrogen coordinated Mn (MnN5) sites effectively activate peroxymonosulfate (PMS) by cleaving the O-O bond into high-valent Mn(IV)-oxo species, with nearly 100% selectivity. This finding highlights the importance of high coordination numbers in single-atom catalysts (SACs) for efficient PMS activation and informs the design of next-generation environmental catalysts.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Xu Meng, Dongzi Yang, Songrui Wang, Xingjiang Liu, Wei Wang
Summary: A novel catalyst Mn-N-C/G with manganese-nitrogen-carbon coordination structure has been synthesized through a self-developed process, showing high activity and structural stability for oxygen reduction reaction. Compared with commercial platinum catalyst, it exhibits superior performance.
Article
Chemistry, Physical
Meifang Luo, Chaozhong Guo, Xinyi Luo, Zhaoxu Li, Yuan Qin, Weizhong Zhang
Summary: A strategy to synthesize 3D porous nitrogen-doped network carbons for catalyzing the ORR has been proposed, showing comparable activity with Pt/C catalyst and outstanding stability. High electron transfer number and low peroxide yield indicate a four-electron reaction pathway, while the 3D porous structures effectively expose catalytic sites and promote mass transportation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Yibo Tang, Ying Lei, Guijun Li, Tiantian Fu, Yang Xiang, Jingqi Sha, Hai Yang, Peng Yu, Yujun Si, Chaozhong Guo
Summary: The bifunctional oxygen catalyst Fe-Me-Ni was prepared by a directional regulation strategy and showed excellent activities for both oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). The Zn-air battery fabricated from Fe-Me-Ni exhibited higher discharge voltage and specific capacity, as well as remarkable rechargeability and long-term cycling stability in practical applications.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Zihao Ou, Yuan Qin, Chuanlan Xu, Ying Jiang, Liumei Teng, Xinru Xu, Jianping Liu, Chaozhong Guo, Haifeng Chen, Yujun Si
Summary: This study presents an efficient strategy to design a porous-rich N, F-codoped carbon-based ORR catalyst (A-NFCF-950) by utilizing double-activator modulation. The electrochemical results indicate that A-NFCF-950 exhibits comparable ORR activity and cycling stability to Pt/C catalyst. In addition, the assembled Zn-air battery using A-NFCF-950 shows higher power density and energy density.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Chuanlan Xu, Chaozhong Guo, Jianping Liu, Bihao Hu, Jiangyou Dai, Mao Wang, Rong Jin, Zhongli Luo, Honglin Li, Changguo Chen
Summary: This study proposes an endogenous regulation strategy to enhance the oxygen reduction reaction (ORR) performance of single-atom Fe catalysts. Theoretical calculations show that the endogenous Fe3C nanostructures can activate the atomically dispersed Fe-N4 sites, promoting the ORR catalytic performance. This work is significant for boosting the ORR performance of single-atom catalysts in electrochemical energy systems.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Physical
Guijun Li, Jianping Liu, Chuanlan Xu, Hongdian Chen, Haonan Hu, Rong Jin, Lingtao Sun, Haifeng Chen, Chaozhong Guo, Honglin Li, Yujun Si
Summary: By pre-preparing a 3D nitrogen-doping carbon-sheet network from in situ gas-molecule cutting of bulk MOF and then adsorbing iron into defects and pores of this preformed matrix, we achieve a Fe-N-C catalyst with 14.78 wt.% iron existed as single-atom Fe-N-4 sites neighboured Fe/Fe3C nanostructures. This catalyst delivers excellent ORR activity and the primary ZAB performance with excellent durability. These results highlight the importance of metal-atoms spin-state modulation by coupled active metal-species in hybrid catalysts for electrochemical energy devices.
ENERGY STORAGE MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Rong Hu, Zijie Xiao, Yurong Liu, Yongyao Su, Chaozhong Guo, Zhe Chen, Cuihong Liu, Wei Zhang
Summary: A new precursor solution was developed for preparing a MoO3 hole transport layer (HTL) for all-polymer solar cells (all-PSCs) using an in situ chemical reaction. The all-PSCs with MoO3 HTL showed higher power conversion efficiency (PCE) and stability compared to those with a PEDOT:PSS layer. The micromorphology of the active layers was found to be influenced by the interfacial layer material, affecting the photoelectric conversion process of all-PSCs. The MoO3-based PM6:PY-IT solar cells achieved an initial PCE of 15.2% and maintained more than 80% of their initial efficiency after 1000 hours.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Xinru Xu, Chuanlan Xu, Jianping Liu, Rong Jin, Xiaofang Luo, Chenyang Shu, Hongdian Chen, Chaozhong Guo, Liqun Xu, Yujun Si
Summary: In this study, an N-doped carbon-based porous catalyst with high specific surface area and abundant defects was fabricated using a dual-template strategy. The catalyst exhibited outstanding catalytic activity and stability in the oxygen reduction reaction. This work provides a new method for the design of non-precious metal ORR catalysts.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Multidisciplinary
Chuanlan Xu, Chaozhong Guo, Jianping Liu, Bihao Hu, Hongdian Chen, Guijun Li, Xinru Xu, Chenyang Shu, Honglin Li, Changguo Chen
Summary: A multiscale hydrophobic surface is designed on an iron single-atom catalyst using a gas-phase fluorination-assisted method inspired by the structure of gas-trapping mastoids on lotus leaves. The hydrophobic Fe-FNC exhibits higher peak power density, longer durability, and better cyclic durability compared to Pt/C-based Zn-air batteries. The formation of more triple-phase interfaces and exposed isolated Fe-N-4 sites are proposed as the governing factors in enhancing the electrocatalytic activity and cycling durability of Zn-air batteries.
Article
Electrochemistry
Xinru Xu, Chenyang Shu, Rong Jin, Hongdian Chen, Chuanlan Xu, Yao Liu, Lingtao Sun, Chaozhong Guo, Haifeng Chen, Wenli Liao
Summary: A composite structure of nitrogen-doped carbon nanosheets grafted with carbon nanotubes, coupled with Fe2O3 nanoparticles and active Fe-Nx species, can form an active ORR catalyst (D-FeNC/MOF) with high-density active sites and multi-size pore distribution to improve the efficiency of the oxygen reduction reaction (ORR).
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Jianping Liu, Chaozhong Guo, Lingtao Sun, Yao Liu, Hongdian Chen, Chenyang Shu, Jiangyou Dai, Chuanlan Xu, Rong Jin, Honglin Li, Yujun Si
Summary: This study reports a facile strategy for directional design of a highly active and stable cerium single-atom catalyst by coupling single-metal cerium sites and mesopores in nanocarbon via pore-confinement-pyrolysis. The catalyst exhibits comparable catalytic activity to Pt/C in the oxygen reduction reaction, and a Ce single-atom catalyst-based zinc-air battery shows higher energy density and better long-term cycling durability compared to a Pt/C-based battery. This proposed strategy may open new possibilities for designing efficient rare-earth metal catalysts for next-generation energy devices.
Article
Chemistry, Physical
Rong Jin, Guo-Guo Wu, Chuanlan Xu, Chaozhong Guo, Yujun Si, Honglin Li, Tatyana Grigorievna Cherkasova, Yakovlev Alexey Nikolaevich
Summary: In this study, a carbon-based bimetallic Ag-Fe-N-C electrocatalyst was synthesized by introducing Ag and Fe ions into the structure of MOFs. The catalyst showed excellent catalytic activity and stability for the oxygen reduction reaction, outperforming the Pt/C-based zinc-air batteries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Inorganic & Nuclear
Jianping Liu, Guijun Li, Chuanlan Xu, Hongdian Chen, Rong Jin, Lingtao Sun, Chenyang Shu, Haifeng Chen, Chaozhong Guo, Honglin Li, Yujun Si
Summary: A non-noble CeO2/Ce-N-C composite with a hierarchically porous carbon sheet-network structure was synthesized through a supramolecular-gel-pyrolysis (SGP) method. The prepared catalyst exhibited comparable catalytic activity and stability to Pt/C for the oxygen reduction reaction (ORR) in an alkaline electrolyte. The zinc-air battery (ZAB) tests showed higher energy density and better long-term cycling durability. The enhanced ORR activity was attributed to the presence of oxygen vacancies and the Ce-N4O4|CeO2 coupling sites.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Chuanlan Xu, Yujun Si, Bingbing Hu, Xinru Xu, Bihao Hu, Ying Jiang, Haifeng Chen, Chaozhong Guo, Honglin Li, Changguo Chen
Summary: This study presents a rational strategy to obtain anatomically dispersed Fe-N-4 catalysts by bonding iron phthalocyanine (FePc) on pre-synthesized Fe-N-C materials. The formation of Fe-O-Fe bridge bonds lowers the overpotential for the oxygen reduction reaction (ORR). The introduction of O atom stimulates the adsorption and activation of O2, resulting in improved ORR activity. The catalyst exhibits higher performance than commercial Pt/C catalyst.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Review
Nanoscience & Nanotechnology
Yuan Qin, Zihao Ou, Chuanlan Xu, Zubang Zhang, Junjie Yi, Ying Jiang, Jinyan Wu, Chaozhong Guo, Yujun Si, Tiantao Zhao
Summary: The increasing popularity of wearable electronic devices has driven the rapid development of flexible rechargeable zinc-air batteries, which have significant potential as next-generation flexible energy devices. Designing efficient and air-stable cathodes for these batteries is desirable yet challenging, with carbon-based catalysts categorized into self-supporting and non-self-supporting types. Strategies for optimizing catalytic performance include doping with atoms and regulating electronic structure, aiming to assist in the design of valuable carbon-based air electrodes for wearable electronic devices.
NANOSCALE RESEARCH LETTERS
(2021)
Article
Chemistry, Applied
Maoyi Yi, Jie Li, Mengran Wang, Xinming Fan, Bo Hong, Zhian Zhang, Aonan Wang, Yanqing Lai
Summary: In this study, polyacrylic acid (PAA) was used as a binder for the cathode in all-solid-state batteries. Through H+/Li+ exchange reaction, a uniform PAA-Li coating layer was formed on the cathode surface, improving the stability of the cathodic interface and the crystal structure. The SC-NCM83-PAA cathode exhibited superior cycling performance compared to traditional PVDF binder.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Yonghan Zhou, Zhongfeng Ji, Wenrui Cai, Xuewei He, Ruiying Bao, Xuewei Fu, Wei Yang, Yu Wang
Summary: By learning from the pencil-writing process, a solid-ink rubbing technology (SIR-tech) has been invented to develop durable metallic coatings on diverse substrates. The composite metallic skin by SIR-tech outperforms pure liquid-metal coating and shows great potential for various applications.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Ruiqi Tian, Hehe Zhang, Zeyu Yuan, Yuehua Man, Jianlu Sun, Jianchun Bao, Ming-Sheng Wang, Xiaosi Zhou
Summary: In this study, polypyrrole-encapsulated Sb2WO6 microflowers were synthesized and demonstrated to exhibit excellent potassium storage properties and cycling stability. The improved performance of Sb2WO6@PPy was attributed to the unique microflower structure, enhanced electronic conductivity, and protective PPy coating.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Review
Chemistry, Applied
Longxing Wu, Zhiqiang Lyu, Zebo Huang, Chao Zhang, Changyin Wei
Summary: This paper presents a comprehensive survey on physics-based state of charge (SOC) algorithms applied in advanced battery management system (BMS). It discusses the research progresses of physical SOC estimation methods for lithium-ion batteries and presents future perspectives for this field.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Honggang Huang, Yao Chen, Hui Fu, Cun Chen, Hanjun Li, Zhe Zhang, Feili Lai, Shuxing Bai, Nan Zhang, Tianxi Liu
Summary: The d-d orbital coupling induced by crystal-phase engineering effectively adjusts the electronic structure of electrocatalysts, improving their activity and stability, which is significant for electrocatalyst research.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Quanzhen Sun, Yifan Li, Caixia Zhang, Shunli Du, Weihao Xie, Jionghua Wu, Qiao Zheng, Hui Deng, Shuying Cheng
Summary: In this study, indium (In) ions were introduced into flexible Cu2ZnSn(S,Se)(4) (CZTSSe) solar cells to modify the back interface and passivate deep level defects in CZTSSe bulk. The results showed that In doping effectively inhibited the formation of secondary phase and V-Sn defects, decreased the barrier height at the back interface, passivated deep level defects in CZTSSe bulk, increased carrier concentration, and significantly reduced the V-OC deficit. Eventually, a flexible CZTSSe solar cell with a power conversion efficiency of 10.01% was achieved. This synergistic strategy of interface modification and bulk defects passivation through In incorporation provides a new approach for fabricating efficient flexible kesterite-based solar cells.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Negah Hashemi, Jafar Hussain Shah, Cejun Hu, Subhajit Nandy, Pavlo Aleshkevych, Sumbal Farid, Keun Hwa Chae, Wei Xie, Taifeng Liu, Junhu Wang, Mohammad Mahdi Najafpour
Summary: This study investigates the effects of Fe on the oxygen-evolution reaction (OER) in the presence of Au. The study identifies two distinct areas of OER associated with Fe and Au sites at different overpotentials. Various factors were varied to observe the behaviors of FeOxHy/Au during OER. The study reveals strong electronic interaction between Fe and Au, and proposes a lattice OER mechanism based on FeOxHy.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Yingshi Su, Yonghui Cheng, Zhen Li, Yanjia Cui, Caili Yang, Ziyi Zhong, Yibing Song, Gongwei Wang, Lin Zhuang
Summary: This study systematically investigates the key roles of Nafion on Cu nanoparticles electrocatalyst for CO2RR. The Nafion modifier suppresses the hydrogen evolution reaction, increases CO2 concentration and mass transfer process, and activates CO2 molecule to enhance C2 product generation. As a result, the selectivity of the hydrogen evolution reaction is reduced and the efficiency of C2 products is significantly improved.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Daijie Deng, Honghui Zhang, Jianchun Wu, Xing Tang, Min Ling, Sihua Dong, Li Xu, Henan Li, Huaming Li
Summary: By doping sulfur into vanadium nitride, the S-VN/Co/NS-MC catalyst exhibits enhanced oxygen reduction reaction activity and catalytic performance. When applied in liquid and flexible ZABs, it shows higher power density, specific capacity, and cycling stability.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Review
Chemistry, Applied
Yi Li, Fei Zhang
Summary: Self-assembly of metal halide perovskite nanocrystals holds significant application value in the fields of display, detector, and solar cell due to their unique collective properties. This review covers the driving forces, commonly used methods, and different self-assembly structures of perovskite nanocrystals. Additionally, it summarizes the collective optoelectronic properties and application areas of perovskite superlattice structures, and presents an outlook on potential issues and future challenges in the development of perovskite nanocrystals.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Anki Reddy Mule, Bhimanaboina Ramulu, Shaik Junied Arbaz, Anand Kurakula, Jae Su Yu
Summary: Direct growth of redox-active noble metals and rational design of multifunctional electrochemical active materials play crucial roles in developing novel electrode materials for energy storage devices. In this regard, silver (Ag) has attracted great attention in the design of efficient electrodes. The construction of multifaceted heterostructure cobalt-iron hydroxide (CFOH) nanowires (NWs)@nickel cobalt manganese hydroxides and/or hydrate (NCMOH) nanosheets (NSs) on the Ag-deposited nickel foam and carbon cloth (i.e., Ag/ NF and Ag/CC) substrates is reported. The as-fabricated Ag@CFOH@NCMOH/NF electrode delivered superior areal capacity value of 2081.9 μA h cm-2 at 5 mA cm-2. Moreover, as-assembled hybrid cell based on NF (HC/NF) device exhibited remarkable areal capacity value of 1.82 mA h cm-2 at 5 mA cm-2 with excellent rate capability of 74.77% even at 70 mA cm-2. Furthermore, HC/NF device achieved maximum energy and power densities of 1.39 mW h cm-2 and 42.35 mW cm-2, respectively. To verify practical applicability, both devices were also tested to serve as a self-charging station for various portable electronic devices.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Zanling Huang, Shuqi Zhu, Yuan Duan, Chaoran Pi, Xuming Zhang, Abebe Reda Woldu, Jing-Xin Jian, Paul K. Chu, Qing-Xiao Tong, Liangsheng Hu, Xiangdong Yao
Summary: In this study, it was found that Ni sites act as a host to attract Fe(III) to form Fe(Ni)(III) binary centers, which promote the oxygen evolution reaction (OER) activity and stability by cyclical formation of intermediates. Additionally, other ions can also catalyze the OER process on different electrodes.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Jie Zeng, Jian Bao, Ya Zhang, Xun-Lu Li, Cui Ma, Rui-Jie Luo, Chong-Yu Du, Xuan Xu, Zhe Mei, Zhe Qian, Yong-Ning Zhou
Summary: The balance between cationic redox and oxygen redox is crucial for achieving high energy density and cycle stability in sodium batteries. This study demonstrates the reversible Mn2+/Mn4+ redox in a P3-Na0.65Li0.2Co0.05Mn0.75O2 cathode material through Co substitution, effectively suppressing the contribution of oxygen redox and improving structure stability.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Daniela M. Josepetti, Bianca P. Sousa, Simone A. J. Rodrigues, Renato G. Freitas, Gustavo Doubek
Summary: Lithium-oxygen batteries have high energy density potential but face challenges in achieving high cyclability. This study used operando Raman experiments and electrochemical impedance spectroscopy to evaluate the initial discharge processes in porous carbon electrodes. The results indicate that the reaction occurs at the Li2O2 surface and the growth of Li2O2 forms a more compact and homogeneous structure.
JOURNAL OF ENERGY CHEMISTRY
(2024)
Article
Chemistry, Applied
Ziqi Zhang, Jinyun Xu, Yu Zhang, Liping Zhao, Ming Li, Guoqiang Zhong, Di Zhao, Minjing Li, Xudong Hu, Wenju Zhu, Chunming Zheng, Xiaohong Sun
Summary: This paper explores the challenge of increasing global CO2 emissions and highlights the role of porous metal oxide materials in electrocatalytic reduction of CO2 (CO2RR). Porous metal oxides offer high surface area and tunability for optimizing CO2RR reaction mechanisms.
JOURNAL OF ENERGY CHEMISTRY
(2024)
