Article
Energy & Fuels
Wenlong Luo, Yue Sun, Zhongtai Lin, Xue Li, Yongqin Han, Jianxu Ding, Tingxi Li, Chunping Hou, Yong Ma
Summary: A flexible electrode material, Ti3C2Tx MXene/V2O5 film, was prepared by vacuum-assisted filtration of a mixture of MXene nanosheets and V2O5 nanofibers, which effectively suppresses the self-stacking phenomenon of MXene nanosheets and regulates the thickness of the film. The resulting electrode showed good capacitive performance, cycling stability, and flexibility, indicating its potential for application in wearable energy storage devices.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Materials Science, Composites
Kiran Donthula, Usha Rani Malothu, Ramya Araga, Ramsagar Vooradi, Venkata Suresh Patnaikuni, M. V. Reddy, Manohar Kakunuri
Summary: In this study, a ternary composite of polyaniline (PANI) deposited onto electrospun MXene-embedded carbon nanofibers (CNF) using in situ polymerization was synthesized. The fiber diameter and micropore volume increased with the deposition of PANI. The flexible binder-free PANI/MXene/CNF composite electrode showed a maximum specific capacitance of 356 F g(-1) at a current density of 0.5 A g(-1) and excellent capacitance retention of 91% after 5000 cycles.
POLYMER COMPOSITES
(2023)
Article
Chemistry, Physical
Shiyun Li, Qiaoyu Zhang, Lina Liu, Jiangang Wang, Ling Zhang, Minjie Shi, Xuecheng Chen
Summary: A sandwich shaped flexible MXene/CNTs@Ni film was fabricated using a simple filtration approach, with CNTs@Ni utilized as interlayer spacers to stabilize MXene nanosheets. The optimized MXene/CNTs@Ni film electrode exhibited robust mechanical stability and impressive electrochemical properties, including a high specific capacitance of 990.8 F cm-3. A flexible symmetrical supercapacitor based on the MXene/CNTs@Ni film showed high energy density, high power density, and good cycling stability, indicating its potential application in portable energy technologies.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Bingzhe Jia, Huailin Yang, Lei Wang, Zhiqi Zhao, Xinming Wu
Summary: Compared with other transition metal based electrode materials, 2D Mn+1XnTx exhibits high conductivity and good solvent compatibility but has low energy density. In this study, a combination of Fe-MOF (MIL-100(Fe)) and Ti3C2TX MXene is used to create a three-dimensional porous nanostructure, enhancing the energy density and preventing aggregation of MXene nanosheets. This design strategy opens up new possibilities for the commercial application of high-performance supercapacitors.
APPLIED SURFACE SCIENCE
(2022)
Article
Energy & Fuels
Ning An, Wenli Li, Zhuhang Shao, Lei Zhou, Yuanyuan He, Daming Sun, Xiuyan Dong, Zhongai Hu
Summary: In this study, a surface-modified poly (1,5-diaminoanthraquinone) nanotubes@MXene flexible film was prepared via electrostatic self-assembly. The film exhibited good mechanical properties, excellent conductivity, and superior electrochemical performance, making it suitable for high-energy density flexible energy storage devices.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Applied
Daotong Zhang, Min Luo, Kai Yang, Pei Yang, Chaozheng Liu, Weimin Chen, Xiaoyan Zhou
Summary: The introduction of hierarchically porous carbon (HPC) into Ti3C2Tx film effectively prevents self-restacking of nanosheets and facilitates rapid ion transport in both transverse and longitudinal directions. This approach enables control over porosity and specific surface area, leading to improved performance of supercapacitors with high stability, capacitance, energy density, and capacitance retention.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Ting Xu, Yaxuan Wang, Kun Liu, Qingshuang Zhao, Qidi Liang, Meng Zhang, Chuanling Si
Summary: An ultralight and robust MXene/carbon nanotube aerogel with abundant pore structures, superior conductivity, and good mechanical properties is constructed. The all-solid-state supercapacitor with MXene/carbon nanotube aerogel exhibits outstanding electrochemical performance, and the flexible device can be bent from 0 to 90 degrees.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2023)
Article
Engineering, Environmental
Yunfeng Guan, Rong Zhao, Ye Cong, Kai Chen, Jingsong Wu, Hui Zhu, Zhijun Dong, Qin Zhang, Guanming Yuan, Yanjun Li, Jiang Zhang, Xuanke Li
Summary: This article introduces the preparation of a flexible Ti2C MXene film and its application as an electrode in supercapacitors. The study found that the film exhibited excellent electrochemical performance at scan rates of 2 mV/s and 100 mV/s, suggesting its potential as a promising electrode material for supercapacitors.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Rui Ma, Xujing Zhang, Jingting Zhuo, Lingyun Cao, Yutong Song, Yajiang Yin, Xiaofeng Wang, Guowei Yang, Fang Yi
Summary: By optimizing the integration approach and modifying the surface chemistry of MXene, high-performance supercapacitor electrodes with enhanced capacitance, rate capability, cyclic stability, and mechanical flexibility are achieved.
Article
Energy & Fuels
Shuai Zhang, Ying Huang, Jiaming Wang, Song Zhang, Xiaopeng Han, Xu Sun
Summary: With the development of electronic technology, there is an increasing demand for flexible power supplies in portable and wearable electronics. Researchers have developed MXene and Co-TCPP nanosheet composites (CoMX) with excellent electrochemical properties through electrostatic self-assembly. The CoMX film electrodes exhibit high specific capacitance and excellent cycling stability, making them promising for flexible energy storage devices.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
Shuai Zhang, Ying Huang, Yifeng Ruan, Jiaming Wang, Xiaopeng Han, Xu Sun
Summary: To meet the demands of future high-tech systems, such as smart wearables, internet of things, and smart cities, lightweight, flexible, patterned, and environmentally friendly electronic devices need to be developed. MXene and citrus-based carbon nanosheet composites (MX/CCNS) are prepared via electrostatic self-assembly, showing excellent energy storage properties and cyclic stability. MX/CCNS can be easily fabricated into flexible self-supporting electrodes and ink for screen printing and large-scale continuous preparation of patterned electrodes. They exhibit high specific capacitance and cycling stability, making them ideal for scalable and sustainable production of next-generation wearable intelligent electronics.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Chemistry, Applied
Tao Yuan, Zhen Zhang, Qian Liu, Xiu-Tong Liu, Ya-Ning Miao, Chun-li Yao
Summary: In this study, MXene/CNF/PANI hybrid films with good conductivity and flexibility were prepared by a vacuum filtration method. The MXene/CNF/PANI electrode showed a high areal specific capacitance of 2935 mF cm(-2) and excellent cycling stability. The film was further used to fabricate a high-performance quasi-solid-state supercapacitor with an ultra-thin thickness, high areal specific capacitance, and high energy and power density.
CARBOHYDRATE POLYMERS
(2023)
Article
Chemistry, Physical
Guixin Wang, Nuolan Jiang, Yuxin Xu, Zhouxiong Zhang, Guiling Wang, Kui Cheng
Summary: The article introduces a design strategy of combining reduced graphene oxide (rGO), MXene, and polypyrrole (PPy) into a flexible film electrode to address the automatic stacking and poor stability issues of 2D materials. The resulting rGO/MXene-PPy composite electrode exhibits high conductivity, robust mechanical properties, and pseudocapacitance. It also shows superior rate performance, remarkable cycling stability, and high energy/power densities. This work demonstrates the potential of the prepared rGO/MXene-PPy electrodes in flexible energy storage devices.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Energy & Fuels
Guanghu Xu, Duohu Gong, Liming Yang, Yi Zheng, Yunkai Yue, Biao Wu, Yuxuan Feng, Tong Li, Weixin Zhang, Xinhui Jiang
Summary: In this study, a free-standing flexible g-C3N4/Ti3C2 hybrid film was prepared as an electrode material for supercapacitors by inserting g-C3N4 nanosheets between Ti3C2 layers. The electrochemical test results showed that 10 wt% g-C3N4/Ti3C2 exhibited a high specific capacity and good capacity retention rate.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Nanoscience & Nanotechnology
Qiangqiang Wang, Yongsheng Fang, Maosheng Cao
Summary: In this study, researchers successfully constructed a heterojunction composite material with high specific capacitance and long-term stability. The flexible capacitor based on this material showed good flexibility and capacitance retention.
Article
Chemistry, Multidisciplinary
Xiaofeng Wang, Kaiming Sun, Ke Li, Xu Li, Yury Gogotsi
CHINESE CHEMICAL LETTERS
(2020)
Article
Chemistry, Multidisciplinary
Ke Li, Xuehang Wang, Shuo Li, Patrick Urbankowski, Jianmin Li, Yuxi Xu, Yury Gogotsi
Review
Chemistry, Multidisciplinary
Ke Li, Meiying Liang, Hao Wang, Xuehang Wang, Yanshan Huang, Joao Coelho, Sergio Pinilla, Yonglai Zhang, Fangwei Qi, Valeria Nicolosi, Yuxi Xu
ADVANCED FUNCTIONAL MATERIALS
(2020)
Article
Electrochemistry
Jianmin Li, Xuehang Wang, Weiwei Sun, Kathleen Maleski, Christopher E. Shuck, Ke Li, Patrick Urbankowski, Kanit Hantanasirisakul, Xiaofeng Wang, Paul Kent, Hongzhi Wang, Yury Gogotsi
Summary: MXenes are a large family of two-dimensional materials with unique physical and chemical properties, allowing for reversible ion intercalation and modification of various properties, including reversible electrochromic behavior in aqueous electrolytes. The electrochromic effect in Ti3C2Tx is primarily due to the formation of stable O-Li bonds and changes induced by inter-band excitations.
Article
Chemistry, Multidisciplinary
Xiaoxiao Kuai, Ke Li, Jianmei Chen, Hao Wang, Junyi Yao, Chao-Lung Chiang, Tingting Liu, Hanzhang Ye, Jianqing Zhao, Yan-Gu Lin, Labao Zhang, Valeria Nicolosi, Lijun Gao
Summary: A novel VO2-V2O5/NC composite anode with excellent reversible capacity, rate performance, and cyclic stability was reported, utilizing a capacitive-dominated potassium storage mechanism, showing high energy and power densities in a full KIC cell that can surpass most state-of-the-art KICs.
Article
Chemistry, Multidisciplinary
Haiyan Duan, Ke Li, Mo Xie, Jia-Ming Chen, Hou-Gan Zhou, Xiaofeng Wu, Guo-Hong Ning, Andrew I. Cooper, Dan Li
Summary: The newly developed ultrathin 2D polyimide nanosheets show promising performance as host materials for lithium-sulfur batteries, delivering high capacity, excellent rate capability, and superior cycling stability.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Materials Science, Multidisciplinary
Jingsong Wu, Yunfeng Guan, Ke Li, Qun Xie, Zhiming Wang, Hui Zhu, Qin Zhang, Xuanke Li, Guanming Yuan, Ye Cong
Summary: Constructing transition metal nitrides (TMNs) with a 2D porous structure is an effective strategy to enhance their electrochemical performance, and in this study, 2D porous Nb4N5@Nb2C heterojunctions were successfully synthesized using a two-step nitridation method in NH3 atmosphere. The heterojunctions showed high rate performance and excellent cycling stability, maintaining 109.2 mAh g(-1) at 2 A g(-1) after 800 cycles, providing a facile strategy for building high-performing 2D porous TMNs and their heterojunctions.
Article
Chemistry, Physical
Xuehang Wang, Seong-Min Bak, Meikang Han, Christopher E. Shuck, Conlan McHugh, Ke Li, Jianmin Li, Jun Tang, Yury Gogotsi
Summary: This study reports that partial oxidation of MXene can enhance the pseudocapacitive intercalation of Li+ ions and demonstrates the possibility of tuning pseudocapacitive intercalation by adjusting the initial oxidation state of the transition metal on MXene.
ACS ENERGY LETTERS
(2022)
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)
Review
Nanoscience & Nanotechnology
Sergio Pinilla, Joao Coelho, Ke Li, Ji Liu, Valeria Nicolosi
Summary: This review provides a comprehensive description of the steps involved in the fabrication of 2D inks for printed technologies, including material selection, deposition techniques, and applications. The potential for commercialization of this technology is also discussed.
NATURE REVIEWS MATERIALS
(2022)
Article
Multidisciplinary Sciences
Ke Li, Juan Zhao, Ainur Zhussupbekova, Christopher E. Shuck, Lucia Hughes, Yueyao Dong, Sebastian Barwich, Sebastien Vaesen, Igor Shvets, Matthias Mobius, Wolfgang Schmitt, Yury Gogotsi, Valeria Nicolosi
Summary: A universal 4D printing technology is developed to manufacture MXene hydrogels with customizable geometry, high conductivity, and efficient pseudocapacitive energy storage ability. The MXene hydrogels obtained possess 3D porous architectures, large specific surface areas, high electrical conductivities, and satisfying mechanical properties.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Ban Fei, Zhihang Liu, Junjie Fu, Xuyun Guo, Ke Li, Chaoqi Zhang, Xuhui Yang, Daoping Cai, Ji Liu, Hongbing Zhan
Summary: Here, the authors report on the synthesis of core-shell N-doped carbon-encapsulated amorphous vanadium oxide arrays as a stable and efficient cathode material for aqueous zinc-ion batteries (AZIBs). The amorphous vanadium oxide core provides unobstructed ions diffusion routes and active sites, while the N-doped carbon shell ensures efficient electron transfer and stabilizes the vanadium oxide core. The fabricated AZIBs exhibit high discharge capacity, superior rate capability, and long cycling stability.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Yunfeng Guan, Rong Zhao, Ke Li, Kai Chen, Hui Zhu, Xuanke Li, Qin Zhang, Nianjun Yang, Zhijun Dong, Guanming Yuan, Yanjun Li, Ye Cong
Summary: This study presents a facile doping engineering strategy to tailor the surface chemistry of MXenes, improving their electrochemical performance. The introduction of heteroatoms shifts the d-band center towards the Fermi level, enhancing their chemical affinity and absorbability for oxygen-containing functional groups and lithium ions. This work provides a new approach for the fine structure regulation of MXenes in energy storage applications.
APPLIED SURFACE SCIENCE
(2023)
Review
Chemistry, Multidisciplinary
Hao Wang, Jianmin Li, Ke Li, Yanping Lin, Jianmei Chen, Lijun Gao, Valeria Nicolosi, Xu Xiao, Jong-Min Lee
Summary: Researchers have shown that by designing nanostructured TMNs with tailored morphology, it is possible to address issues such as limited active sites and sluggish ionic kinetics in bulk TMNs, ultimately improving electrochemical performance. Recent progress in TMN-based nanomaterials has focused on geometric-structure design, electronic-structure engineering, and applications in electrochemical energy conversion and storage.
CHEMICAL SOCIETY REVIEWS
(2021)
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)