Article
Chemistry, Physical
Mengyu Yuan, Jing Luo, Hui Xu, Cheng Wang, Yong Wang, Yuan Wang, Xiaomei Wang, Yukou Du
Summary: In this study, a novel class of bimetallic hollow nanorods (HNRs) were developed as electrocatalysts to enhance the hydrogen evolution reaction (HER). The RuNi HNRs exhibited superior HER performance and stability, showing high electrocatalytic activity in both alkaline and acidic solutions. This research paves a new way for the universal fabrication of efficient electrocatalysts for boosting the HER.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Naiwrit Karmodak, Luca Bursi, Oliviero Andreussi
Summary: A systematic screening of over 200 two-dimensional transition metal dichalcogenides was conducted using first-principles simulations and continuum embedding models, resulting in the identification of promising candidates with low overpotentials and high stability under acidic conditions.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Multidisciplinary
Jiabao Ding, Yujin Ji, Youyong Li, Guo Hong
Summary: The rational design of platinum-based nanostructures with specific crystal structure is crucial for their diverse applications. The anisotropic superstructures of monoatomic Pt-embedded hexagonal close-packed nickel nanosheets showed significantly improved efficiency in hydrogen evolution due to an unusual dissociation-diffusion-desorption mechanism. This work provides a new approach to synthesize highly anisotropic superstructures embedded with monoatomic noble metals for boosting their applications in catalytic processes.
Article
Materials Science, Multidisciplinary
Qian-Qian Xiong, Tahir Muhmood, Cheng-Xiao Zhao, Jing-San Xu, Xiao-Fei Yang
Summary: Transition metal-containing MXene has great potential in various research fields and its performance relies on composition, structure, dimension, and surface chemistry. The rational design and controllable synthesis of ultrathin 2D MXene nanosheets with uniform surface terminations are of great importance.
Article
Engineering, Environmental
V. G. Dileepkumar, C. Pratapkumar, Ramarao Viswanatha, Basavanakote M. Basavaraja, Rapela R. Maphanga, Madhu Chennabasappa, Narasimha Srinivasa, Siddaramanna Ashoka, Zhong Chen, Sami Rtimi, Kolleboyina Jayaramulu, Rajendra S. Varma, Gyorgy Szekely, Mysore Sridhar Santosh
Summary: The stable and highly active electrocatalyst NaFeS2, prepared by the hydrothermal method, shows remarkable performance in both hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) with enhanced electrocatalytic activity. The material outperforms other electrocatalysts in its category, displaying improved efficiency and stability for water splitting applications. The study highlights the potential of NaFeS2 as a promising bifunctional electrocatalyst for large-scale hydrogen productions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Akansha Goyal, Marc T. M. Koper
Summary: Increasing the alkali metal cation concentration enhances the activity of the hydrogen evolution reaction on gold electrodes, while increasing the electrolyte pH indirectly affects the reaction activity by tuning the near-surface cation concentration. However, too high near-surface cation concentration can lead to a decrease in the reaction activity due to surface blockage.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Xianhong Wu, Junhui Wang, Zhiyu Wang, Fu Sun, Yuzhao Liu, Kaifeng Wu, Xiangyu Meng, Jieshan Qiu
Summary: An efficient strategy is proposed to enhance the electrochemical activity of MXenes for electrocatalysis by utilizing their plasmonic response to electromagnetic waves, resulting in a significant thermoplasmonic effect that lowers the energy requirements and activation energy of the hydrogen evolution reaction. This approach also facilitates interfacial charge transfer and boosts the HER activity of various types of MXenes with improved kinetics and Faradaic efficiency across a wide pH range.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Rajib Samanta, Ranjit Mishra, Sudip Barman
Summary: The synthesis of PdO-RuO2-C resulted in a catalyst with abundant interfaces/defects, showing high HER and HOR activity in alkaline conditions. It exhibited excellent stability and outperformed Pt/C in alkaline HOR activity. Improvement of HER/HOR kinetics was observed in different alkaline electrolytes.
Article
Chemistry, Multidisciplinary
Ju-Zhen Zhang, Zichu Zhang, Hong-Bo Zhang, Yi Mei, Feng Zhang, Peng-Xiang Hou, Chang Liu, Hui-Ming Cheng, Jin-Cheng Li
Summary: A method based on Prussian-Blue analogue was proposed to prepare honeycomb-like ultrathin and heterogeneous Co2P-Fe2P nanosheets. These nanosheets exhibited low overpotentials for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) in alkaline, acidic, and neutral electrolytes. The nanosheets also showed excellent performance in universal-pH water electrolysis, achieving high efficiency at ultralow voltages under alkaline conditions.
Article
Chemistry, Physical
Shenqi Wei, Pingxing Xing, Zijie Tang, Yuanyuan Wang, Liyi Dai
Summary: A high-performance electrocatalyst composed of Co-FeP/3D RGO is reported, which can be utilized for water splitting and hydrogen production over a broad pH range. The catalyst exhibits low hydrogen evolution reaction overpotential and Tafel slope, and shows excellent activity and stability in both acidic and alkaline electrolytes.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Aso Navaee, Abdollah Salimi, Tsun-Kong Sham
Summary: A rapid and simple method for synthesis of graphdiyne-like nanosheets with remarkable photocatalytic activity is proposed in this study.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Electrochemistry
Huan Wang, Jie Ying, Yu-Xuan Xiao, Jiang-Bo Chen, Jia-Hao Li, Zhen-Zhao He, Hao-Jun Yang, Xiao-Yu Yang
Summary: This study reports an ultrafast synthesis method for Cu2O octahedrons and their inlay in Ni foam, resulting in a self-supporting electrocatalyst. The electrocatalyst displays superior activity and stability in both oxygen and hydrogen evolution reactions, and exhibits low cell voltage and high current density when applied as bifunctional electrodes in alkaline seawater splitting.
ELECTROCHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Wei Jia, Xu Wang, Zhenjiang Lu, Yafei Wu, Rui Sheng, Jing Lv
Summary: The activity of MoS2 in hydrogen evolution reaction is influenced by different sulfur configurations and phases, with metallic 1T phase and bridging S22- as favorable factors. A simple hydrazine hydrate-assisted method was used to synthesize sulfur-rich MoS2, showing improved electrocatalytic performance. This research provides new insights for enhancing the electrocatalytic activity of MoS2 through a straightforward approach.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Zeyu Guan, Jiankun Li, Shiyi Li, Keyu Wang, Linfeng Lei, Yixing Wang, Linzhou Zhuang, Zhi Xu
Summary: Designing efficient and stable catalysts for the oxygen evolution reaction (OER) is crucial for the development of proton exchange membrane water electrolyzers. This study presents a novel method for synthesizing catalysts by utilizing a reliable, low-cost, ultrafast Joule-heating method to construct carbon shells that anchor and encapsulate iridium nanoparticles to carbon paper. The results demonstrate the effectiveness of the core-shell structure formed by the Joule-heating treatment in improving the performance of the catalyst.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Applied
Muhammad Arif, Ghulam Yasin, Muhammad Shakeel, Muhammad Asim Mushtaq, Wen Ye, Xiaoyu Fang, Shengfu Ji, Dongpeng Yan
Summary: The study developed high-performance non-noble metal electrocatalysts for pH-universal water splitting with low overpotential. The catalyst demonstrated excellent electrocatalytic performance in various pH conditions, showing promising potential for efficient water splitting.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Iqra Moeez, Dieky Susanto, Jae-Ho Park, Ji-Young Kim, Hee-Dae Lim, Kyung Yoon Chung
Summary: The electrochemical performance of NaxCl can be improved by controlling the upper limit of cut-off voltage, which introduces more Na-vacancy defects and increases capacity. The oxidation of Cl- ions released by NaCl decomposition forms Cl-based organic species, protecting the NaCl electrode from undesired side reactions at high voltage.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Cheng Lin, Chaoran Dong, Sungsoon Kim, Yuan Lu, Yulan Wang, Zhiyang Yu, Yu Gu, Zhiyuan Gu, Dong Ki Lee, Kan Zhang, Jong Hyeok Park
Summary: By a simple annealing process, an enhanced Mie scattering effect of the well-documented porous BiVO4 photoanode was obtained, which significantly reduced reflectivity, increased light absorbability, and achieved efficient photo-electrochemical (PEC) oxidation of glycerol (GLY) to dihydroxyacetone (DHA) on the photoanode.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Gwanghyun Lee, Yunkyu Choi, Hyungjoon Ji, Ju Yeon Kim, Jeong Pil Kim, Junhyeok Kang, Ohchan Kwon, Dae Woo Kim, Jong Hyeok Park
Summary: A highly stable silicon microparticle anode with high energy density is achieved using a hybrid binder made of functionalized carbon nanotubes and poly(acrylic acid). The anode exhibits excellent stability and capacity retention during cycling tests.
Article
Engineering, Chemical
Daero Lee, Chanui Park, Young Gyun Choi, Seunghyok Rho, Won Bo Lee, Jong Hyeok Park
Summary: A selective Li+ conductive solid-state electrolyte (SLCSE) composed of a highly conductive CMA polymer matrix and branched polyamine is reported. The incorporation of rigid benzene-ring constituents in the matrix enhances both mechanical strength and Li+ transportation. The SLCSE exhibits high ionic conductivity, high Li+ transference number, and exceptional stability, making it a promising candidate for solid-state Li-metal batteries.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Environmental
Young Moon Choi, Seung Hun Roh, Eujin Kwak, Dae-Geun Choi, Seok Joon Kwon, Jung Kyu Kim, Jong Hyeok Park
Summary: The introduction of plasmon induced energy transfer (PIET) is a promising approach to improve the photo-electrochemical (PEC) responses on metal-oxide based photoelectrodes. This study demonstrates effective localization of a plasmon-induced near-field on a photoelectrode via patterned Au NP assemblies (Au-PAT) that enhances the PEC responses for oxidation reactions. The optimized grating pitch of Au-PAT enhances the light absorption efficiency and increases the interband transition rate via PIET.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Jie Jin, Shipeng Wan, SunJe Lee, Cheoulwoo Oh, Gyu Yong Jang, Kan Zhang, Ziyang Lu, Jong Hyeok Park
Summary: A micromolar amount of dye-based modulator (Rhodamine B) is used to easily and controllably tailor the pore size of a Ti-based metal-organic framework (MIL-125-NH2). The resulting hierarchically porous MIL-125-NH2 (RH-MIL-125-NH2) exhibits optimized adsorption and photocatalytic activity. This work provides a meaningful basis for the construction of hierarchically porous MOFs and demonstrates the superiority of the hierarchical pore structure for adsorption and heterogeneous catalysis.
Article
Multidisciplinary Sciences
Minje Ryu, Young-Kuk Hong, Sang-Young Lee, Jong Hyeok Park
Summary: In this study, a feasible and sustainable dry press-coating process is proposed to fabricate electrodes for lithium-ion batteries. This process improves the mechanical strength and performance of the electrodes compared to traditional wet coating, allowing for high loading and impressive specific energy and volumetric energy density.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Han Gyo Jeong, Gwanghyun Lee, Jong Hyeok Park
Summary: Silicon is a promising active material for lithium-ion batteries with a high theoretical capacity. However, its fabrication requires complicated and high-cost processes to improve cyclic performance. Herein, we report a one-step wet ball-milling process to fabricate submicron silicon particles coated with a polyacrylonitrile (PAN) layer, which enhances electrolyte wettability and increases lithium-ion pathways on the silicon surface. These improvements result in a stable solid electrolyte interphase layer and reduced internal resistance of the electrodes. The silicon anodes with optimal particle size and PAN layer exhibit superior performance even at ultra-fast current density, and when combined with an NCM712 cathode, a full-cell demonstrates excellent performance.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Zhao Yang, Byung Gi Kim, Woongsik Jang, Jong Hyeok Park, Dong Hwan Wang
Summary: This study successfully improves the performance of organic photodetectors by introducing acid-free PEDOT-(PSS) films, enabling the diagnosis of blood circulation status and cardiovascular diseases.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Energy & Fuels
Jinghan Wang, Dokyoon Kim, Jong Hyeok Park, Sangwoo Ryu, Mohammadreza Shokouhimehr, Ho Won Jang
Summary: This article reviews recent advancements in the electrochemical and photoelectrochemical production of H2O2, discussing the fundamental mechanism, electrode design, and engineering strategies. It also addresses the obstacles and challenges of this process, as well as methods to enhance H2O2 production and efficiency.
Article
Chemistry, Multidisciplinary
Mihui Park, Seonyong Cho, Junghoon Yang, Vincent Wing-hei Lau, Kwang Hee Kim, Jong Hyeok Park, Stefan Ringe, Yong-Mook Kang
Summary: The use of heterogeneous catalysts as substrates can regulate the growth of Li2O2 and the formation of solid/solid reaction interfaces, improving the reversibility, capacity, and durability of lithium-oxygen batteries.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Multidisciplinary Sciences
Jiwon Kim, Jae Hyung Kim, Cheoulwoo Oh, Hyewon Yun, Eunchong Lee, Hyung-Suk Oh, Jong Hyeok Park, Yun Jeong Hwang
Summary: An electro-assisted approach using acid-treated carbon electrocatalyst and in-situ cathodically generated reactive oxygen species is proposed for the partial oxidation of methane at ambient temperature and pressure. Reactive oxygen species activate methane and methanol, leading to selective methane partial oxidation. This study presents a method for the electrochemically assisted partial oxidation of methane to produce liquid oxygenate, HCOOH, selectively.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Burcu Kalyoncuoglu, Metin Ozgul, Sebahat Altundag, Emine Altin, Iqra Moeez, Kyung Yoon Chung, Muhammad Arshad, Mustafa Goktan Aydin, Tolga Depci, Serdar Altin, Sevda Sahinbay
Summary: This study reports the positive effects of Ag substitution/addition to Na0.67MnO2, which can increase the capacity and improve the cycle life. The positive effects are mainly attributed to the enlarged interlayer spacing, suppressed Jahn-Teller effect, and increased electrical conductivity due to the presence of metallic Ag.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Sung Yeob Kim, Hee-Jae Ahn, Young-Hoon Kim, Hong-Kyu Kim, Byeong-Hyeon Lee, Young-Woon Byeon, Jae-Ho Park, Kyung Yoon Chung, Jae-Chul Lee
Summary: This study presents a microsized CuS conversion anode for Na-ion batteries that achieves high capacity, stable cycling performance, and excellent rate performance. The developed anode offers a simple and cost-effective solution without the need for expensive materials or complicated synthesis methods, providing new avenues for high-performance battery electrodes.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Jun Tae Kim, Hyeon-Ji Shin, A-Yeon Kim, Hyeonseong Oh, Hun Kim, Seungho Yu, Hyoungchul Kim, Kyung Yoon Chung, Jongsoon Kim, Yang-Kook Sun, Hun-Gi Jung
Summary: This study proposes a method for improving the performance of all-solid-state batteries by synthesizing controlled sulfide solid electrolyte materials and their simple coating process. The results show that the coated materials exhibit excellent Li-ion conductivity and suppress cathode degradation reactions, enabling high discharge capacity and long cycle life.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
