Article
Chemistry, Physical
Shi -Wei Lin, Mei-Hong Tong, Yan-Xin Chen, Rui Chen, Hai-Peng Zhao, Xia Jiang, Kai Yang, Can-Zhong Lu
Summary: Composite of rare earth oxides with TiO2 nanotube arrays effectively modifies the PEC behavior of TiO2. A CeO2/TiO2 heterojunction was prepared by loading CeO2 nanoparticles on anodized TiO2 nanotube arrays, demonstrating high photocurrent density and hydrogen evolution rate.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Monika Soltys-Mroz, Karolina Syrek, Ewelina Wiercigroch, Kamilla Malek, Krzysztof Rokosz, Steinar Raaen, Grzegorz D. Sulka
Summary: This study investigated the semiconducting and photoelectrochemical properties of nanotubular FeOx-TiO2 annealed at different temperatures, revealing that the annealing temperature has an impact on the photoelectrochemical response of the materials, with the sample annealed at 500°C showing the lowest band gap value.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Mei-Hong Tong, Tian-Ming Wang, Shi-Wei Lin, Rui Chen, Xia Jiang, Yan-Xin Chen, Can-Zhong Lu
Summary: TiO2 is widely used as a photocatalyst for water splitting due to its high activity, low cost, abundance, safety, and stability. However, its further utilization is limited by its wide band gap and rapid recombination speed. In this study, ultra-thin carbon-doped TiO2 nanotube arrays were fabricated, which exhibited high photoelectrochemical activity and significantly narrowed band gaps and decreased charge resistance. The results suggest that ultra-thin carbon doping in TiO2 nanotube arrays can optimize photocatalysts for PEC water splitting.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Ceramics
I. Neelakanta Reddy, V Manjunath, Jaesool Shim
Summary: Efficient and solvent-free SnO2 quantum dots-decorated V2O5 nanobelt catalysts were synthesized for controlling environmental pollution via photoelectrochemical water splitting. The modification with SnO2 QDs significantly influenced the optical properties of the V2O5 nanobelts. Optimized SnO2 QDs-decorated V2O5 nanobelts showed the lowest charge transfer resistance and capacitive behavior in 0.1 M NaOH electrolyte.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Jin Young Park, Gisang Park, Sung Yong Bae, Hae Jeong Kim, Duck Hoon Lee, Seonkyung Ko, Soo-Kwan Kim, Gyudong Lee, Hyung Ryul You, Hyosung Choi, Jong-Sung Yu, Younghoon Kim, Jongmin Choi
Summary: This study presents a solution-processable AgBiS2 nanocrystal (NC) photoanode design strategy for visible-light-driven PEC water splitting. The AgBiS2 NC photoanode exhibits excellent electron collection ability and low interfacial charge transfer resistance, resulting in higher photocurrent density than traditional photoanodes. Compared to Bi2S3 NC photoanodes, the AgBiS2 NC photoanode emits a significantly higher percentage of photocurrent density under visible and near-IR light, demonstrating its superiority for application in highly efficient visible-light-driven PEC devices.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Guang Feng, Mengyun Hu, Shuai Yuan, Junyi Nan, Heping Zeng
Summary: This study successfully prepared hydrogenated amorphous TiO2-x with high visible-light photocatalytic activity using a unique liquid plasma hydrogenation strategy. Through density functional theory analysis, it was found that the narrower the bandgap of HA-TiO2-x, the higher the photocatalytic efficiency exhibited. Additionally, the HA-TiO2-x showed excellent visible-light photodegradation in various pollutants and high wastewater purification performance.
Article
Nanoscience & Nanotechnology
Palyam Subramanyam, Bhagatram Meena, Duvvuri Suryakala, Challapalli Subrahmanyam
Summary: The study demonstrates that incorporating Bi2Se3 nanoflowers into TiO2 electrode significantly enhances the PEC performance, leading to an increase in hydrogen production by an order of magnitude. The binary TiO2/Bi2Se3 nanocomposite electrode exhibits high photocurrent density and hydrogen conversion efficiency.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Mohit Khosya, Dheeraj Kumar, Mohd Faraz, Neeraj Khare
Summary: In this study, zinc indium sulfide coupled polyaniline (ZnIn2S4/PANI) nanocomposites were synthesized using a chemisorption method. The nanocomposites exhibited significant enhancement in photo-catalytic and photoelectrochemical (PEC) water splitting activity under visible light illumination. The improvement in photodegradation and PEC water splitting activity is attributed to extended visible light absorption, synergistic effect of PANI, and the formation of a type-II heterojunction, which facilitates charge separation and faster transfer efficiency of photogenerated charge carriers.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Chemical
Mohit Khosya, Dheeraj Kumar, Mohd Faraz, Neeraj Khare
Summary: Hexagonal zinc indium sulfide coupled g-C3N4 (H-ZnIn2S4/g-C3N4) nanocomposites were synthesized via chemisorption method, and their photoelectrochemical water splitting activity was investigated. The H-ZnIn2S4/g-C3N4 nanocomposites exhibited a 1.9 times higher photoelectrochemical performance than H-ZnIn2S4. The improved performance can be attributed to the formation of a type-II heterojunction, which enhances the separation and transfer of photogenerated charge carriers.
ADVANCED POWDER TECHNOLOGY
(2023)
Article
Chemistry, Physical
Qinghua Yi, Shan Cong, Hao Wang, Xinjie Zhou, Jianmei Chen, Ke Li, Yushen Liu, Jong-Min Lee
Summary: A composite catalyst of NiTiO3-coated TiO2 nanorod arrays was reported to enhance photoelectrochemical performance by enlarging absorption range and enhancing electron-hole separation efficiency. This heterostructure engineering strategy demonstrated significant improvement in photocurrent density when used as an electrode in photoelectrochemical water splitting, showing potential for optimizing various semiconductor photocatalysts.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Physics, Multidisciplinary
Xianyin Song, Hongtao Zhou, Changzhong Jiang
Summary: By co-implanting nitrogen and cobalt, a significant cathodic shift of TiO2 photoanode was achieved, leading to enhanced visible light photo-electrochemical activity. The nitrogen/cobalt co-doped TiO2 nanorod arrays showed improved performance with a much higher visible-light photocurrent density.
Review
Chemistry, Physical
Khuzaimah Arifin, Rozan Mohamad Yunus, Lorna Jeffery Minggu, Mohammad B. Kassim
Summary: Photoelectrochemical water splitting is an ideal method for clean hydrogen production, but developing photoelectrodes that meet the criteria remains a challenge for commercialization. Titanium dioxide nanotubes, with their one-dimensional structure, have a relatively wide bandgap, limiting light utilization. Various approaches, such as surface modification and band structure modification, have been developed to improve TiO2 nanotubes, achieving high photocurrent density and stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Thermodynamics
Dheeraj Kumar, Amish Kumar Gautam, Neeraj Khare
Summary: A self-biased hybrid system combining a visible light-active Ag/NaNbO3 photoanode and a darkened thermoelectric device was designed to achieve hydrogen production via water splitting. The hybrid system exhibited approximately 17 times enhancement in the photocurrent density and H-2 production at zero bias compared to the stand-alone PEC device.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Materials Science, Multidisciplinary
Shirin P. Kulkarni, Yogesh M. Chitare, Vikas V. Magdum, Prashant D. Sawant, Shweta V. Talekar, Shraddha A. Pawar, Umakant M. Patil, Kishor V. Gurav, Dhanaji B. Malavekar, Amol U. Pawar, Jayavant L. Gunjakar
Summary: The facile and cost-effective chemical bath deposition method was used to synthesize highly photoactive facet-controlled bismuth vanadate thin films. By fine-tuning the chemical bath pH and anionic precursor, the morphology and structure of the thin films were controlled. The facet-controlled BiVO4 photoanodes showed superior photocurrent density and stability compared to the dispersed nanoparticulate counterparts.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Review
Chemistry, Multidisciplinary
Uji Pratomo, Rifky Adhia Pratama, Irkham Irkham, Allyn Pramudya Sulaeman, Jacob Yan Mulyana, Indah Primadona
Summary: The depletion of fossil fuels has prompted the search for alternative energy sources, with solar energy being a focus due to its vast potential and environmental benefits. Photocatalysts, specifically 3D ZnO superstructures, have been extensively studied for hydrogen production using the photoelectrochemical (PEC) method. However, the morphological effects of 3D ZnO on water-splitting performance and the modification of carbon-based materials for enhanced efficiency are important aspects to consider.
Article
Chemistry, Physical
Jiangchao Liu, Chongyang Tang, Zunjian Ke, Rui Chen, Hongbo Wang, Wenqing Li, Changzhong Jiang, Dong He, Gongming Wang, Xiangheng Xiao
Summary: This study systematically investigates the regulation of hydrogen adsorption by d-d orbital interaction of metallic tungsten dioxide and demonstrates that optimizing hydrogen adsorption via d-d orbital modulation is an effective approach to developing efficient and robust catalysts.
ADVANCED ENERGY MATERIALS
(2022)
Review
Materials Science, Multidisciplinary
Jing Wang, Changzhong Jiang, Wenqing Li, Xiangheng Xiao
Summary: This review provides an overview of the recent developments in polarization-sensitive photodetectors based on anisotropic systems. It presents the classification and anisotropic properties of low-dimensional materials, analyzes the anisotropic characteristics of different material systems from the perspective of crystallography, and discusses the working mechanism of polarization-sensitive photodetectors. Furthermore, it reviews the recent advances of polarization-sensitive photodetectors based on low-dimensional materials and addresses some breakthroughs for future development in this field.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Physical
Hui Duan, Hengyi Wu, Huizhou Zhong, Xuening Wang, Wenjing Wan, Derun Li, Guangxu Cai, Changzhong Jiang, Feng Ren
Summary: Ion irradiation is an effective method to improve the photoelectrochemical performance of BiVO4 by introducing oxygen vacancies, leading to higher photocurrent density and improved separation efficiency of photogenerated carriers.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Materials Science, Multidisciplinary
Hong Liu, Chao Xu, Qianqian Ding, Chenglong Zhao, Xiangheng Xiao, Shikuan Yang
Summary: A new method for preparing plasmonic polycrystals, using a self-assembled bowl-in-bowl template-confined dewetting process, is developed. The size and composition of the plasmonic nanoparticles can be conveniently designed, and complex plasmonic coupling between the nanoparticles and plasmonic grains is observed. The presence of microbowls also leads to interesting optical properties in plasmonic nanostructures.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Rui Chen, Yongfeng Pei, Yufan Kang, Jiangchao Liu, Yan Xia, Jing Wang, Hang Xu, Changzhong Jiang, Wenqing Li, Xiangheng Xiao
Summary: Molybdenum disulfide (MoS2) is a promising 2D semiconductor material with unique characteristics. This study demonstrates the effective use of substitutional metal doping, achieved through tungsten ion implantation and chemical vapor deposition, to modulate the energy bandgap and improve the performance of MoS2. The W-doped MoS2 photodetectors exhibit high-speed response and this work provides a novel doping strategy for 2D materials.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Yan Xia, Jing Wang, Rui Chen, Hongbo Wang, Hang Xu, Changzhong Jiang, Wenqing Li, Xiangheng Xiao
Summary: This study explores the application potential of 2D material Bi2O2Se in RRAM, demonstrating the growth of Bi2O2Se nanosheets using CVD and the realization of a 2D heterostructure of Bi2O2Se/Bi2SeOx. The heterostructure shows significant resistive switching behavior, achieved through oxygen plasma treatment of the Bi2O2Se nanosheets.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Sabrina M. Younan, Zhida Li, XingXu Yan, Dong He, Wenhui Hu, Nino Demetrashvili, Gabriella Trulson, Audrey Washington, Xiangheng Xiao, Xiaoqing Pan, Jier Huang, Jing Gu
Summary: Active sites within catalysts play a crucial role in driving reactions and catalysis. By spatially confining guest metals in the microenvironments of active sites, the catalytic activity can be improved by modifying the electronic states of the active sites. In this study, the intercalation of zinc single atoms between layers of 1T-MoS2 enhances the performance of the hydrogen evolution reaction (HER) by reducing overpotential, charge transfer resistance, and kinetic barrier. This enhancement is achieved by controlling the coordination geometry and electronic states of the confined zinc atoms, which donate electrons to coordinated sulfur atoms and improve HER kinetics.
Article
Chemistry, Multidisciplinary
Zunjian Ke, Dong He, Xingxu Yan, Wenhui Hu, Nicholas Williams, Hongxing Kang, Xiaoqing Pan, Jier Huang, Jing Gu, Xiangheng Xiao
Summary: Nitrate and nitrite are common contaminants in industrial wastewater and groundwater. The electroreduction of NOx- to produce ammonia presents a sustainable alternative to the energy-intensive Haber-Bosch process. However, the development of selective catalysts that can regulate the reaction pathway and suppress competing reactions is still lacking.
Article
Physics, Applied
Yudong Sun, Jing Wang, Dong He, Menghua Yang, Changzhong Jiang, Wenqing Li, Xiangheng Xiao
Summary: In this article, a memristive device with a Cu/HfO2/TiO2 nanowire array/FTO structure was fabricated using a hydrothermal method and atomic layer deposition. The devices exhibited good resistive switching properties, including low set voltages (around 1V), good retention (>10^4s), and multilevel storage. Compared to Cu/TiO2 NWA/FTO devices, Cu/HfO2/TiO2 NWA/FTO devices showed better uniformity, possibly due to the difference in dielectric constants between TiO2 and HfO2. Under consecutive voltage pulses, some synaptic functions were mimicked, including long-term potentiation/depression, paired-pulse facilitation, and spike timing dependent plasticity.
APPLIED PHYSICS LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Jing Wang, Hang Xu, Dong He, Hongbo Wang, Yufan Kang, Yongfeng Pei, Changzhong Jiang, Wenqing Li, Xiangheng Xiao
Summary: The authors propose to engineer 2D GeSe nanosheets via low-energy ion irradiation for improving the photoresponse and realize a self-driven and higher photoresponsivity by Ag ion irradiation. This work provides a new direction for modification of other 2D materials by ion beam technique for optoelectronic devices.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Haoyu Li, Jing Wang, Yongfeng Pei, Yufan Kang, Changzhong Jiang, Wenqing Li, Xiangheng Xiao
Summary: Nonvolatile flash memory is widely used in portable electronic equipment, but its reliability and performance degrade as it approaches its physical limit. This study introduces a MoS2-based Ag nanocrystal memory that can be fabricated in one step through metal ion implantation. The fabricated memory has a 9 V window and a high ON/OFF current ratio (>10(7)), and exhibits good endurance characteristics. The ion implantation technology and the 2D nature of the channel can be utilized for large-scale integration of flexible nanoelectronic memory devices.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
Jincan Ren, Yu Tang, Weibao Li, Dong He, He Zhu, Xingyu Wang, Si Lan, Zijia Yin, Tingting Yang, Zhaowen Bai, Yang Ren, Xiangheng Xiao, Qi Liu
Summary: A synergetic strategy of La, Mg co-doping and LiAlO2@Al2O3 surface coating is designed to enhance the performance of LiCoO2 (CM-LCO) cathode material under extreme temperatures. CM-LCO exhibits excellent temperature adaptability and remarkable electrochemical performance, as well as excellent cycle stability and high-rate performance. The synergistic effects of this co-modification strategy are demonstrated by investigating the electrochemical reaction kinetics and structure evolution of CM-LCO, providing a promising strategy for the application of high-voltage LCO in a wide temperature range.
Review
Chemistry, Multidisciplinary
Yafei Yang, Dong He, Xiaobo Feng, Xiangheng Xiao
Summary: Covalent organic framework (COF) materials have attracted great interest in photocatalytic applications due to their adjustable pore structure and photoelectric properties. However, the weak surface electron coupling and transfer ability limit the activity of pure COFs photocatalysts. To address this issue, a confinement modification strategy has been proposed to introduce low-dimensional entities into COFs, creating new active sites and regulating the band structure. This paper discusses the semiconductor properties of COFs based on photocatalytic thermodynamics and explores the influence of internal linkage motifs and stacking behaviors on the band structure. The confinement characteristics and their impact on photocatalytic performance are explained based on the spatial dimension classification of low-dimensional entities. Finally, the application and mechanism of COF-based confined catalysts in energy conversion reactions are discussed, along with the current challenges and development prospects of COF-based confined hetero-photocatalysts.
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)
