Article
Chemistry, Multidisciplinary
Zizai Ma, Xundi Gu, Guang Liu, Qiang Zhao, Jinping Li, Xiaoguang Wang
Summary: The study synthesized a novel Cu-Co-Se nanotube electrocatalyst supported on a 3D copper skeleton for efficient water splitting. The designed nanotube structure showed superior electrocatalytic performance for both the hydrogen evolution reaction and the oxygen evolution reaction, leading to a low cell voltage and high durability in overall water splitting.
Article
Engineering, Environmental
Abhishek Meena, Pandiarajan Thangavel, Arun S. Nissimagoudar, Aditya Narayan Singh, Atanu Jana, Da Sol Jeong, Hyunsik Im, Kwang S. Kim
Summary: The self-supported oxovanadate-doped cobalt carbonate (VCoCOx@NF) on nickel foam (NF) is a high-performance catalyst for overall water splitting in alkaline-anionexchange-membrane-water-electrolyzer (AAEMWE). It shows excellent activity for both hydrogen and oxygen evolution reactions, reducing overpotentials and achieving overall water splitting at low cell voltages. The doping of V species enhances the HER and OER at the Co site, providing potential for large-scale hydrogen production utilizing V- and Co-based bimetallic oxide materials.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Ruijie Dai, Hua Zhang, Weijie Zhou, Yao Zhou, Zitao Ni, Ji Chen, Shuwen Zhao, Yifan Zhao, Fayin Yu, Anran Chen, Rongfei Wang, Tao Sun
Summary: In this study, nickel molybdenum nitride heterostructure nanowire arrays were successfully synthesized on nickel foam to achieve high-performance self-supporting electrodes. These electrodes exhibited low overpotentials in water splitting reactions, providing a new approach for the design of non-precious metal-based transition metal nitride catalysts.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Wei Deng, Yuping Gai, Dan Li, Zhide Chen, Wenshuo Xie, Jun Yu, Renqiang Yang, Xichang Bao, Fei Jiang
Summary: Reasonable design and synthesis of hetero atom metal coordination compounds on the atomic scale can significantly improve the performance of catalysts. For example, CoSSeNi-Pt/C can greatly enhance the hydrogen evolution reaction (HER) activity and exhibit excellent long-time durability in alkaline media.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Xin Ding, Run Jiang, Jialin Wu, Minghui Xing, Zelong Qiao, Xiaofei Zeng, Shitao Wang, Dapeng Cao
Summary: This study successfully synthesized the heterostructure of nickel nitride and ceria on nickel foam, showing excellent hydrogen evolution and oxygen evolution performance. Ceria plays different roles in the hydrogen evolution and oxygen evolution processes. The study reveals the different catalytic mechanisms of ceria in boosting the hydrogen evolution and oxygen evolution activities of nickel nitride, providing useful guidance for designing high-performance bifunctional catalysts.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Review
Chemistry, Inorganic & Nuclear
Lan Sun, Qiaomei Luo, Zhengfei Dai, Fei Ma
Summary: Water electrolysis is crucial for hydrogen generation, requiring efficient electrocatalysts; Recent advancements include strategies like nanoarchitecturing and heteroatomic doping to enhance electrocatalyst performance; Challenges and opportunities lie ahead for improving water splitting performance.
COORDINATION CHEMISTRY REVIEWS
(2021)
Review
Chemistry, Physical
Ye Zeng, Mengting Zhao, Zihao Huang, Weijie Zhu, Jiaxian Zheng, Qiu Jiang, Zhoucheng Wang, Hanfeng Liang
Summary: This article reviews recent progress in regulation strategies for reconstruction reactions in water electrolysis, including the mechanism of water electrolysis, critical factors of the reconstruction process, advanced characterization methods, and modulation strategies. The article highlights the effectiveness of regulating the reconstruction process to enhance catalytic performance of electrocatalysts, and discusses future challenges in surface-reconstructed catalysts for water electrolysis.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Xiao Meng, Zaiqi Li, Yuanyuan Liu, Zeyan Wang, Peng Wang, Zhaoke Zheng, Ying Dai, Baibiao Huang, Hefeng Cheng, Jr-Hau He
Summary: An unassisted solar water splitting device with high efficiency and stability is reported, utilizing tandem III-V-based GaInP/GaAs/Ge light absorber and robust earth-abundant Ni foil-based MoNi4/MoO2 bifunctional electrocatalysts. The device exhibits a high solar-to-hydrogen (STH) conversion efficiency of 17.6% in alkaline electrolytes with long-term stability of up to 845 hours. Further construction into a wireless unassisted monolithic device could lead to an artificial leaf with an STH efficiency of 4.28%, holding great promise in future solar fuel production with high efficiency, good stability, and low cost.
Article
Chemistry, Multidisciplinary
Ali Saad, Yang Gao, Kwadwo Asare Owusu, Wei Liu, Yanyan Wu, Aymeric Ramiere, Haichuan Guo, Panagiotis Tsiakaras, Xingke Cai
Summary: Transition metal borides are promising electrocatalysts for water splitting due to their conductivity and durability. In this work, the authors successfully synthesized highly crystalline ternary borides Mo2NiB2, which showed low overpotentials for both the oxygen evolution reaction and hydrogen evolution reaction in alkaline media.
Article
Chemistry, Physical
Wenhui Luo, Yang Wang, Liuxiong Luo, Shen Gong, Mengni Wei, Yixuan Li, Xueping Gan, Yuyuan Zhao, Zhenghong Zhu, Zhou Li
Summary: This work presents the rational design and fabrication of a highly efficient, cost-effective, and environmentally friendly non-noble-metal bifunctional catalyst for electrocatalytic overall water splitting. The catalyst exhibits excellent catalytic performance, achieving high current density at low cell voltage, and can be reactivated after simple treatment.
Review
Chemistry, Multidisciplinary
Joshua O. Olowoyo, Roelof J. Kriek
Summary: Electrocatalytic water splitting is a promising technology for producing clean and sustainable hydrogen. Bimetallic-based spinels are considered as potential electrocatalysts for the oxygen evolution reaction (OER). This review provides an overview of the recent progress in using bimetallic-based spinels as OER electrocatalysts, including their structures, classifications, and strategies for improving performance.
Article
Chemistry, Physical
Kartick Chandra Majhi, Mahendra Yadav
Summary: The research demonstrates that FeNiSSe nanotube is a more efficient bifunctional electrocatalyst with lower overpotential, smaller Tafel slope value, and larger surface area compared to FeNiSe2, leading to superior electrocatalytic activity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Review
Materials Science, Multidisciplinary
Yihang Yao, Zhaoyuan Zhang, Lifang Jiao
Summary: This article summarizes the excellent performance and optimization strategies of transition metal borides (TMBs) in hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), pointing out the direction for enhancing the performance.
ENERGY & ENVIRONMENTAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Ying Chen, Zhengyang Cai, Ding Wang, Ya Yan, Ping Wang, Xianying Wang
Summary: This study reports an air-stable Cu-based nanostructure consisting of Mn doped CuCl and CuO as a dual functional electrocatalyst for water splitting. The excellent catalytic activity and stability are found to be attributed to the main active component CuCl, along with Mn doping and the synergistic effect between CuCl and CuO, demonstrating the great potential of Cu-based non-noble metal electrocatalysts in water splitting and other renewable energy conversion technologies.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Anurupa Maiti, Suneel Kumar Srivastava
Summary: In this study, a mixed-phase molybdenum sulfide (MoS2) material impregnated with CuO and doped with ruthenium was synthesized and studied for hydrogen evolution reaction (HER) and oxygen evolution reaction (OER). The prepared nanostructured Ru-doped CuO/MoS2 (MSCR) catalyst showed lower overpotentials and appropriate Tafel slopes, attributed to increased electrochemical active surface area, different electronic couplings of molybdenum, copper, and ruthenium, abundant vacancies and defects, homogeneous distribution of copper oxide, higher conductivity of the structure, and unique ultrathin 3d flowerlike morphology.
ACS APPLIED NANO MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Subramani Surendran, Sebastian Cyril Jesudass, Gnanaprakasam Janani, Joon Young Kim, Yoongu Lim, Jihyun Park, Mi-Kyung Han, In Sun Cho, Uk Sim
Summary: This paper reports on the synthesis of SCNO@N-CNF electrocatalyst via a simple and efficient electrospinning technique. The electrocatalyst exhibits multiple redox active centers, making it more efficient in oxygen evolution reaction and hydrogen evolution reaction. As a bifunctional electrocatalyst in overall electrochemical water splitting, SCNO@N-CNF delivers high current density at a low voltage.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Engineering, Environmental
Chanmin Jo, Subramani Surendran, Min-Cheol Kim, Tae-Yong An, Yoongu Lim, Hyeonuk Choi, Gnanaprakasam Janani, Sebastian Cyril Jesudass, Dae Jun Moon, Jaekyum Kim, Joon Young Kim, Chang Hyuck Choi, Myeongjin kIM, Jung Kyu Kim, U. K. Sim
Summary: Nickel phosphide supported on nitrogen-doped carbon (Ni2P@N-C) is a bifunctional electrocatalyst that can efficiently decompose ammonia and produce hydrogen in an electrolysis cell with low energy consumption.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Electrochemistry
Jihyun Park, Song Yeul Lee, Joon Young Kim, Subramani Surendran, Dong-Kyu Lee, Yong Il Park, Uk Sim
Summary: This study proposes encapsulating Ni2P with carbon nanofibers (Ni2P@CNF) using a simple electrospinning method to produce an anode material suitable for high-performance SIHCs. The Ni2P@CNF exhibits higher specific capacity and rate capability compared to Ni2P and Ni2P/CNF. By integrating the Ni2P@CNF anode with an activated carbon (AC) cathode, the SIHCs demonstrate high energy density and power density, as well as long-term stability with a capacity retention of 80% over 3,500 cycles.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Dohun Kim, Khurshed Alam, Mi-Kyung Han, Subramani Surendran, Jaehyoung Lim, Joon Young Kim, Dae Jun Moon, Geonwoo Jeong, Myeong Gon Kim, Gibum Kwon, Sangsun Yang, Tae Gon Kang, Jung Kyu Kim, Seon Yeop Jung, Hoonsung Cho, Uk Sim
Summary: This study presents a method for improving the electrochemical nitrogen reduction reaction (ENRR) by controlling the wettability of the catalyst surface to suppress hydrogen evolution reaction (HER) and facilitate N2 adsorption. It was found that increasing the hydrophobicity of the surface led to higher ammonia yield and Faradaic efficiency. Computational fluid dynamics simulation confirmed that improving the hydrophobicity of the catalytic surface increased the amount of time N2 gas stayed on the surface.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Review
Chemistry, Physical
Sejin Im, Dohun Kim, Subramani Surendran, Jinuk Choi, Dae Jun Moon, Joon Young Kim, Hyunjung Lee, Dae-Hyun Nam, Uk Sim
Summary: The modern technical society is actively seeking sustainable and reliable energy resources, particularly in the form of hydrogen (H2) economy. High entropy alloy (HEA) catalysts have shown great potential as superior electrocatalytic materials, but their underlying mechanisms and theoretical understanding are still not well-established.
CURRENT OPINION IN ELECTROCHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Yujin Jeong, Gnanaprakasam Janani, Dohun Kim, Tae-Yong An, Subramani Surendran, Hyunjung Lee, Dae Jun Moon, Joon Young Kim, Mi-Kyung Han, Uk Sim
Summary: The utilization of ammonia as a hydrogen carrier shows promise in the development of next-generation refueling stations. By controlling the synergistic interaction between metal and semiconductor and introducing Cu vacancies, the electrochemical nitrogen reduction reaction (ENRR) performance can be significantly improved, leading to higher NH3 production.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Min-Cheol Kim, Jiyong Chung, Tae-Yong An, Jaeyoung Lee, Mi-Kyung Han, Shinbi Lee, Wonyong Choi, Jung Kyu Kim, Sang Soo Han, Uk Sim, Taekyung Yu
Summary: Through a combination of experimental and theoretical work, we demonstrate the catalytic effect of thiourea (TU) in electrochemical NRR. TU reduction leads to the generation of catalytically active carbon sites on the NiS surface, facilitating a more facile NRR pathway. This study presents a new possibility for NRR catalysts based on metal-nonmetal compounds.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Pham Tan Thong, Dong-Joo Jeong, Hoon Seo, Yoong Ahm Kim, Seunghun Jung, Uk Sim, Ho-Young Jung
Summary: This work investigates the cycle performance of lead-carbon (LC) negative electrode and reference lead negative electrode for automotive applications through a 50% depth-of-discharge (50%DoD) cycle test. The results show that the LC cell has a higher cycle number. Differential voltage analysis reveals an alleviated concentration loss phenomenon for the LC cell at high depth-of-discharge. Sulfation is confirmed for both kinds of electrodes. Scanning electron microscopy and cyclic voltammetry show better preserved inner morphology and electrochemical reactivity for the cycled LC electrode, while energy-dispersive X-ray spectroscopy detects PbSO4 existence on the carbon layer.
JOURNAL OF POWER SOURCES
(2023)
Review
Chemistry, Physical
Sebastian Cyril Jesudass, Subramani Surendran, Gnanaprakasam Janani, Tae-Hoon Kim, Uk Sim
Summary: This review explores the strategies and properties of modifying the electronic properties of 2D-COF and highlights their prospects in electrochemical devices. The importance of electroactive 2D-COF as emerging functional materials in electrochemical energy conversion devices is elucidated, and effective strategies to improve their electrocatalytic applications are summarized.
ADVANCED ENERGY MATERIALS
(2023)
Review
Materials Science, Ceramics
Sathyanarayanan Shanmugapriya, Myeong Gon Kim, Sejin Im, Yujin Jeong, Subramani Surendran, Tae-Eon Park, Young-Hoon Yun, Hyunjung Lee, Tae-Hoon Kim, Uk Sim
Summary: Fluorinated polymers are important functional materials in polymer chemistry with outstanding properties. Among them, perfluoropolyether (PFPE) has significant applications in energy storage and conversion devices due to its super-hydrophobicity, non-crystallinity, non-flammability, low toxicity, and gas-permeability. This review summarizes the properties, production, and notable studies of PFPE as electrolytes in batteries, solid electrolyte interphase in metal-ion batteries, oxygen selective membrane in metal-air batteries, and hydrophobic coating for gas diffusion electrodes in fuel cells. It also presents other potential energy-related applications of PFPE.
JOURNAL OF THE KOREAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Gnanaprakasam Janani, Subramani Surendran, Dong-Kyu Lee, Sathyanarayanan Shanmugapriya, Hyunjung Lee, Yuvaraj Subramanian, Uk Sim
Summary: A new MoSe2/rGO heterostructure electrocatalyst is reported, which exhibits low overpotentials and high current densities, showing excellent electrocatalytic performance in high-performance water splitting devices. This work provides an attractive and cost-effective electrocatalyst for industrial-scale hydrogen fuel production.
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)