Article
Nanoscience & Nanotechnology
W. Zhang, G. Pan, D. Han, T. Liu, W. Liang, M. Dai, H. Xie, D. Qin, L. Niu
Summary: This study investigates the structure-activity relationship of high-performance photocatalytic nitrogen reduction reaction (pNRR) by regulating the semi- or full encapsulated structure model formed by noble metal nanoparticles and mesoporous TiO2 nanorods. The research reveals that the Ti-Pd bimetallic active centers at the interface of semi-encapsulated palladium-decorated mesoporous TiO2 nanorods possess ultra-high adsorption energy, reducing the activation energy barrier and achieving efficient ammonia synthesis through photocatalytic reactions.
MATERIALS TODAY NANO
(2023)
Article
Chemistry, Physical
Runze Li, Dingsheng Wang
Summary: This article discusses the key factors affecting the catalytic performance of metal-based atomically dispersed catalysts and their relationship with the active sites. It first introduces the effectiveness of active site design through coordination effects, then discusses the role of chemical bonds in the active sites and the influence of the spacing of active atoms in intermetallic compounds on catalytic behavior. Additionally, the importance of synergistic effects in catalyst design is emphasized, and the key parameters affecting catalytic performance at the atomic scale are summarized.
Article
Chemistry, Physical
Chao Jiang, Hongwei Tian, Xiaoying Hu, Shansheng Yu
Summary: This study systematically investigates the HER and OER mechanisms on the (1 1 0) facet of pentlandite in acidic medium using density functional theory. The results reveal that the bimetallic Fe-Ni heterostructure can delicately regulate charge transfer to enhance catalytic performance.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Takaaki Tomai, Liangyu Tang, Akira Yoko, Yuki Omura, Gimyeong Seong, Tadafumi Adschiri
Summary: The study introduces a method for regenerating degraded facet-controlled nanoparticle catalysts through the dissolution-reprecipitation process and surface crystalline structure reorientation using an organic modifier. The modifier stabilizes the (100) facet, accelerates the dissolution-reprecipitation process, and promotes facet modification and catalyst regeneration.
CHEMISTRY OF MATERIALS
(2021)
Article
Multidisciplinary Sciences
Bo Shen, Liliang Huang, Jiahong Shen, Kun He, Cindy Y. Zheng, Vinayak P. Dravid, Chris Wolverton, Chad A. Mirkin
Summary: The composition, shape, exposed facets, crystal structure, and atom distribution play key roles in determining the activity of metal particle catalysts. By combining a solid-state, Bi-influenced high-index facet shape regulation strategy with thermal annealing, researchers were able to control crystal structure and atom distribution on high-index facets of nanoparticles, resulting in a diverse library of chemically disordered and ordered multimetallic tetrahexahedral nanoparticles. Density functional theory calculations indicated that surface Bi modification aided in stabilizing the (210) high-index facets of the nanoparticles, regardless of their internal atomic ordering. Additionally, ordered intermetallic THH Pt1Co1 nanocatalysts exhibited superior catalytic performance compared to disordered THH Pt1Co1 nanoparticles and commercial Pt/C catalysts towards methanol electrooxidation, demonstrating the importance of crystal structure and atom distribution control on high-index facets in nanoscale catalysts.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Chemistry, Inorganic & Nuclear
Konstantin W. Kroeckert, Felix Garg, Michel Heinz, Justin Lange, Patricia P. Simoes, Regina Schmidt, Olga Bienemann, Alexander Hoffmann, Sonja Herres-Pawlis
Summary: Copper bromide complexes based on a series of substituted guanidine-quinolinyl and -pyridinyl ligands were investigated, and the relationships between their molecular structures, spectroscopic and electronic properties were described. The study revealed that substituent positions and ligand flexibility have a significant impact on the stability and activity of the copper(ii) complexes.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Inorganic & Nuclear
H. Moreno, G. L. Domingues, M. Assis, P. P. Ortega, V. R. . Mastelaro, M. A. . Ramirez, A. . Z. Simoes
Summary: This study investigates the morphology and photocatalytic properties of CeO2 nanocrystals synthesized using microwave-assisted solvothermal method with acetone and ethanol as solvents. The results show that CeO2 synthesized in acetone has more emission peaks in the blue region, possibly due to higher Ce3+ concentration, while CeO2 synthesized in ethanol exhibits a strong orange-red emission, suggesting the presence of oxygen vacancies. CeO2 synthesized in acetone demonstrates superior photocatalytic response compared to that synthesized in ethanol, possibly due to increased disorder in the CeO2 structure, leading to enhanced light absorption.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Yong Li, Kyung-Ah Min, Byungchan Han, Lawrence Yoon Suk Lee
Summary: This study demonstrates highly enhanced hydrogen evolution reaction (HER) activity of Ni nanoparticles on TiO2 nanopyramid arrays, with the modification of nitrogen-doped carbon quantum dot layer forming an active interface of Ni-N-C bonds. This work provides insight into the rational design of non-noble metal electrocatalysts for promoting hydrogen production efficiently.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Yong Xie, Si-Jie Li, Jie-Ping Huang, Rui Qiu, Zhao-Qing Liu, Nan Li
Summary: This study synthesized a Cu-Co9S8-NHCS-1 electrocatalyst by cleverly doping copper into Co9S8 and combining it with nitrogen-doped hollow carbon spheres. The electrocatalyst exhibited remarkable activity and durability for oxygen reduction reactions (ORR) and oxygen evolution reactions (OER). Zinc-air batteries and microbial fuel cells with the Cu-Co9S8-NHCS-1 cathode showed high power density and long-term stability.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Environmental
Marta Kowalkinska, Szymon Dudziak, Jakub Karczewski, Jacek Ryl, Grzegorz Trykowski, Anna Zielinska-Jurek
Summary: In this study, TiO2 nanostructures with different morphologies and crystal facets were successfully prepared using TiOF2 as a precursor, demonstrating varying photocatalytic activity and mineralization efficiency. The TiO2 octahedra exposing {101} facets exhibited the highest photoactivity and mineralization efficiency among the obtained nanostructures. Surface effects of the photocatalyst were identified as influencing factors in mineralization efficiency and photodegradation products formation.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Xinxin Lu, Jingran Xiao, Lingling Peng, Liwen Zhang, Guowu Zhan
Summary: Morphology and geometrical dimensions are crucial for the photoelectrochemical (PEC) performance of bismuth vanadate (BiVO4). Decahedral BiVO4 synthesized through hydrothermal process shows superior charge injection efficiency, and the crystal size and facet proportion can be controlled to improve charge separation efficiency.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Youhui Zhou, Yao Cheng, Ju Xu, Hang Lin, Yuansheng Wang
Summary: Recent discoveries have uncovered the temperature-dependent upconversion luminescence behavior of inert-core/active-shell UCNPs, where both the sensitizer and activator are located near the nanoparticle surface, leading to a stronger luminescence thermal enhancement tendency compared to active-core UCNPs. This thermal enhancement behavior appears to be core-size dependent and is suggested to be attributed to the alleviation of surface quenching induced by lattice thermal expansion, based on the relationship between size-dependent luminescence and lattice expansion coefficient.
Article
Chemistry, Inorganic & Nuclear
Lan Ding, Siyang Wang, Yaoyao Tang, Xinyi Chen, Hongjun Zhou
Summary: Photocatalytic splitting of water for hydrogen generation is a green and renewable solution. A heterostructure composite photocatalyst of CoO modified with nitrogen-doped MXene quantum dots is successfully designed. The composite exhibits significantly improved photocatalytic efficiency due to the synergistic interaction between Ti3C2 MXene quantum dots and CoO octahedra.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Shivanand Chettri, Liang-Ting Wu, Sagarmani Rasaily, Debesh Sharma, Bikram Gurung, Rajani Dewan, Sudarsan Tamang, Jyh-Chiang Jiang, Anand Pariyar
Summary: Replicating the enzymatic surface microenvironment in vitro is challenging, but constructing an analogous model could facilitate our understanding of surface effects and aid in developing an efficient bioinspired catalytic system. In this study, five unique Cu2O morphologies were generated, and the surface morphology variations were found to be a consequence of differences in the exposure of low-index facets. The reactivity of Cu2O was found to be influenced by the proportion of {110} planes, with r-Cu2O exhibiting the highest reactivity.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Inorganic & Nuclear
Xiaofan Shi, Xin Lian, Di Yang, Xiaojuan Hu, Jijie Zhang, Xian-He Bu
Summary: Facet-engineering has been proven as an effective method to improve the photocatalytic activity of metal-organic framework (MOF)-based photocatalysts by promoting charge transfer. In this study, different crystal facets of NH2-UiO-66 were synthesized and tetra-decahedral NH2-UiO-66 with co-exposed (100) and (111) crystal facets showed superior photocatalytic performance. This study demonstrates the feasibility and potential of facet-engineering for enhancing the photocatalytic applications of MOFs.
DALTON TRANSACTIONS
(2021)
Article
Materials Science, Ceramics
Fanda Zeng, Zeshuo Meng, Zijin Xu, Jian Xu, Wei Shi, Hailong Wang, Xiaoying Hu, Hongwei Tian
Summary: In this study, a novel biomass carbon material with large specific surface area and high oxygen content was developed for high-energy and environmental applications. The material exhibited high specific capacitance and superior capacitance retention in both acid and metal ion electrolytes, making it suitable for supercapacitor applications. Additionally, a carbon-based membrane prepared using the material showed excellent performance in the removal of various pollutants.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Jinyu Bao, Wei Quan, Yunqi Ning, Hanbing Wang, Qun Wei, Lingzhi Huang, Weijin Zhang, Yongxiang Ma, Xiaoying Hu, Hongwei Tian
Summary: A series of LaNi1-xFexO3/g-C3N4 heterojunction photocatalysts were prepared by a simple wet chemical method and their structural, morphological, optical, electrochemical properties, as well as their photocatalytic degradation performance for tetracycline and Cr(VI), were investigated. The LaNi0.8Fe0.2O3/g-C3N4 composite photocatalysts exhibited excellent photocatalytic performance due to the synergy of doping and constructing heterojunctions. Doping of Fe ions increased the concentration of oxygen vacancies, favoring the formation of electron traps, while the type-II heterojunction formed between LaNi0.8Fe0.2O3 and g-C3N4 effectively enhanced the separation and transfer of photoinduced carriers, thereby promoting photocatalytic activity. The LaNi0.8Fe0.2O3/g-C3N4 photocatalyst showed long-term stability after three cycles of use, and a photocatalytic mechanism was proposed.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Lingzhi Huang, Jinyu Bao, Wei Quan, Xueyang Li, Tingting Zhao, Yunqi Ning, Wenting Lu, Kehong Liu, Fengyao Ren, Hongwei Tian
Summary: A Z-scheme LaFeO3/MoS2/graphene photocatalyst was synthesized and tested for the degradation of dye wastewater. The photocatalyst showed high efficiency and stable performance, attributed to the synergistic effect between LaFeO3 and MoS2/graphene co-catalyst and the optimized Z-scheme heterojunction interface.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Sen Xu, Xiaofeng Fan, Changzhi Gu, Yunfeng Shi, David J. Singh, Weitao Zheng
Summary: This study used molecular dynamics simulations to investigate the fuzz growth mechanism on tungsten surfaces under helium particles irradiation, which is crucial for designing structural materials for the first wall. It was observed that helium clusters had the highest mobility at surface temperatures around 800 to 1800K, favoring the aggregation of large bubbles. The growth, rupture, and merging of helium bubbles were simulated to reproduce the formation of protrusions on the surface, which induced fuzz nanostructure formation. Shallow bubble bursts resulted in pinholes in the surface layer, while dislocation slip during the growth of deep bubbles played a key role in the morphology of surface protrusions.
JOURNAL OF NUCLEAR MATERIALS
(2023)
Article
Chemistry, Physical
Jiayi Zhang, Xiliang Gong, Xin Li, Fanda Zeng, Zeyu Hao, Zhengyan Du, Jian Xu, Zeshuo Meng, Beihong Long, Shansheng Yu, Hongwei Tian
Summary: By employing the rapid redox reaction of concentrated H2SO4 and sucrose, the perfect carbon lattice can be destroyed to form defects and insert large numbers of heteroatoms, rapidly forming electron-ion conjugated sites of carbon materials. CS-800-2 exhibited excellent electrochemical performance and high energy density due to the constructed electron-ion conjugated sites on the super-large surface of carbon-based materials.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Haoshan Nan, Kexin Song, Jian Xu, Shuhui Lv, Shansheng Yu, Xiaoying Hu, Hongwei Tian
Summary: High-entropy perovskite oxides (HEPOs) have unstable energy storage in high-power battery-supercapacitor hybrid devices. This study reveals the dual-ion energy storage mechanism of La0.7Bi0.3Mn0.4Fe0.3Cu0.3O3 nano-HEPO in aqueous alkaline BSH devices. The deintercalation of hydrogen cations is hindered during discharge due to surface filling with oxygen vacancies, causing irreversible phase transition and capacity deterioration.
Article
Materials Science, Multidisciplinary
Taowen Dong, Tingting Qin, Wei Zhang, Yaowen Zhang, Zhuoran Feng, Yuxiang Gao, Zhongyu Pan, Zixiang Xia, Yan Wang, Chunming Yang, Peng Wang, Weitao Zheng
Summary: The interaction between the electrode and the electric double layer (EDL) significantly influences the energy storage mechanism. By studying the popular alpha-Fe2O3 electrode and the EDL interaction, we find that the energy storage mechanism of the electrode can be controlled by modulating the EDL.
Article
Chemistry, Multidisciplinary
Yu Qiu, Jinchang Fan, Jiandong Wu, Wenting Lu, Shengwei Wang, Dewen Wang, Xin Ge, Xiao Zhao, Wei Zhang, Weitao Zheng, Xiaoqiang Cui
Summary: In this study, a new design for MOR electrocatalysts is reported, which improves the MOR performance by atomically engineering oxide/metal interfaces. The CrOX-Pd alloy catalyst shows excellent MOR performance and can rapidly remove CO*. Theoretical calculations reveal the mechanism of the catalyst's changes in CO* adsorption properties and COOH* formation energy.
Article
Chemistry, Multidisciplinary
Chenxu Zhang, Yanan Cui, Chao Jiang, Yaxin Li, Zeshuo Meng, Chong Wang, Zhengyan Du, Shansheng Yu, Hongwei Tian, Weitao Zheng
Summary: In this study, ruthenium nanoparticles (Ru NPs) are grown on Fe5Ni4S8 support (Ru/FNS) for efficient hydrogen evolution reaction (HER). The interaction between FNS and Ru NPs enhances stability and activity, allowing for excellent HER performance under pH-universal conditions. The developed Ru/FNS electrocatalyst shows promise for future applications in water electrolysis due to its low cost and high activity.
Article
Chemistry, Physical
Tianyi Xu, Ruoyu Li, Lei Zhang, Dongxu Jiao, Yilong Dong, Ming Gong, Dantong Zhang, Jinchang Fan, Dewen Wang, Yanhua Liu, Xiao Zhao, Wei Zhang, Weitao Zheng, Xiaoqiang Cui
Summary: By bridging the inner and outer layers of the core-shell structure using a bridge Br atom, we have synthesized carbon wrapped copper bromide nanorods (CuBr@C) with excellent electrocatalytic activity.
Article
Chemistry, Multidisciplinary
Xiaowen Ruan, Depeng Meng, Chengxiang Huang, Minghua Xu, Dongxu Jiao, Hui Cheng, Yi Cui, Zhiyun Li, Kaikai Ba, Tengfeng Xie, Lei Zhang, Wei Zhang, Jing Leng, Shengye Jin, Sai Kishore Ravi, Zhifeng Jiang, Weitao Zheng, Xiaoqiang Cui, Jiaguo Yu
Summary: The double S-scheme artificial photosynthesis system enhances photocatalytic hydrogen production by utilizing dual reduction sites. A double S-scheme heterojunction catalyst is developed, which enables efficient charge separation and transport, leading to improved solar hydrogen evolution.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Zeyu Hao, Zhengyan Du, Ting Deng, Dong Wang, Yi Zeng, Shansheng Yu, Zeshuo Meng, Xiaoying Hu, Xiufeng Hao, Hongwei Tian
Summary: A novel strategy was developed to modify high-entropy perovskite fluorides using pyrrolidone, which resulted in improved catalytic activity. The modified electrocatalyst showed lower energy barrier and enhanced conductivity, leading to superior catalytic activity.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Materials Science, Multidisciplinary
Jingjie Pan, Kan Zhang, Jia Wang, Xinlei Gu, Qiang Zhao, Yifan Shan, Mao Wen, Chang Liu, Weitao Zheng, Changfeng Chen
Summary: This study achieves macro-scale and durable superlubricity by designing and fabricating materials with a protective layer on the surface that exhibits superlubricity. The findings provide a fresh approach for the rational design and implementation of superlubricating materials, opening up a new avenue for versatile applications.
Article
Chemistry, Physical
Zeyu Hao, Zhengyan Du, Ting Deng, Dong Wang, Yi Zeng, Shansheng Yu, Zeshuo Meng, Xiaoying Hu, Xiufeng Hao, Hongwei Tian
Summary: A novel strategy was developed to enhance the catalytic activity of high-entropy perovskite fluorides for the oxygen evolution reaction. Surface modification with pyrrolidone effectively reduced the energy barrier and improved the catalytic activity. The optimized electrocatalyst showed superior performance at lower potentials, making it a promising candidate for future OER catalyst syntheses.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
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)
