Article
Chemistry, Physical
Yang Zhang, Zejia Bi, Yunxia Liang, Weiwei Zuo, Guiyin Xu, Meifang Zhu
Summary: In this study, a porous graphene/carbon nanotube/tin oxide (PP-GCS) fiber was successfully fabricated, showing excellent electrochemical performance and high line capacity. This work provides a promising method for the production of flexible power devices.
ENERGY STORAGE MATERIALS
(2022)
Article
Energy & Fuels
Chaoran Qin, Xiaoyi Wu, Cui Huang, Bo Duan, Jinping Zhou, Hongye Yang, Ang Lu
Summary: In this study, a tooth-derived supercapacitor was fabricated for the first time, demonstrating excellent performance and potential for applications in energy storage field.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Engineering, Environmental
Hao Qian, Baoxin Wu, Zhongwu Nie, Tiantian Liu, Peng Liu, Hao He, Jianghong Wu, Zhaoyong Chen, Shuguang Chen
Summary: A flexible Ni3S2@Ni/CC electrode was developed and demonstrated excellent performance for supercapacitors and oxygen evolution reaction, with high energy density, good mechanical flexibility, and durability.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Katayoon Gholami Laelabadi, Rostam Moradian, Iraj Manouchehri
Summary: A simple, environmentally degradable, and scalable approach was used to design and fabricate interdigitated and sandwich electrodes, with high-performance active materials prepared by the hydrothermal method. Planar supercapacitors showed a capacitance of 99 F/g at 0.5 mA current and good stability after 1000 cycles at 5 A/g current density, with a capacitance retention rate over 98.3%. The sandwich-type supercapacitors exhibited a low charge transfer resistance of 1.75 Ω and achieved a capacitance retention of 83% when the current density changed from 0.25 to 5.0 A/g, indicating promising potential for high-performance supercapacitor applications in future electronic productions.
ACS APPLIED ENERGY MATERIALS
(2021)
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, Physical
Zihan Chen, Xihong Zu, Liheng Chen, Yi Qi, Wenbin Jian, Yaoying Wu, Wenli Zhang, Xuliang Lin, Guobin Yi, Quanbing Liu, Zilun Tang, Jianyu Wu, Huafeng Dong, Yanlin Qin
Summary: Here, the authors report a method to fabricate a flexible self-supporting and lightweight 3D electrode for flexible solid-state supercapacitors. The electrode utilizes vertically grown Fe-MnCo2O4 nanowire arrays to improve electron propagation and enhance the utilization efficiency and cycle performance of MnCo2O4.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Energy & Fuels
Sibel Yazar, Busra Arvas, Melih Besir Arvas, Cigdem Yolacan, Yucel Sahin
Summary: This study presents a supercapacitor designed for flexible and wearable textile systems operating in environments similar to biological fluids. The supercapacitor exhibits high specific capacitance, good charging/discharging stability, and high energy density, making it suitable for wearable electronic systems.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Energy & Fuels
T. Arun, K. Aravinth, P. Balaji Bhargav, Mathew K. Francis
Summary: Surface modified hierarchical Ni3S2/MoS2/rGO hybrid nanomaterial was directly grown on Ni foam using a one-step hydrothermal technique. The as-synthesized electrode material showed high specific capacity, excellent cycling stability, and superior energy density, making it an ideal candidate for supercapacitor applications.
JOURNAL OF ENERGY STORAGE
(2023)
Article
Engineering, Electrical & Electronic
Milad Shobeiri, Kazem Tahmasebi, Seied Mohammad Ali Hosseini
Summary: Urcina-like NiCo2O4 nanoneedles were synthesized on a nickel foam using hydrothermal synthesis, and the surface of the structure was modified to a candle-like nano-array through electrodepositing of Ni3S2. The resulting core-shell structure electrode exhibited outstanding specific capacity and rate capability, as well as excellent capacity retention after cycling. It is concluded that the surface modification of the NiCo2O4 electrode enhances electron transfer and improves the capacitive performance of the NiCo2O4@Ni3S2 electrode.
JOURNAL OF ELECTRONIC MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Rui Li, Weijie Zhang, Ming Zhang, Zhengbin Peng, Yixuan Wang, Yuanyuan Liu, Yanmei Zheng, Xinli Guo, Yao Zhang, Zengmei Wang, Tong Zhang
Summary: A novel Ni3S2/3D graphene/nickel foam composite electrode was prepared by chemical vapor deposition followed by electrodeposition, exhibiting good chemical stoichiometry and high specific capacitance. This composite electrode showed greatly improved conductivity and specific surface area, providing an effective way to enhance the capacitive property of Ni3S2 for practical supercapacitor applications.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Yanliang Zhao, Fei Liu, Zhanyong Zhao, Peikang Bai, Yong Ma, A. Alhadhrami, Gaber A. M. Mersal, Zhiping Lin, Mohamed M. Ibrahim, Zeinhom M. El-Bahy
Summary: In this study, a novel method using two-dimensional lamellar graphene oxide and nano-rod KCu7S4 to prepare ink suitable for 3D printing is proposed. The printed rGO/KCu7S4 electrode shows excellent capacitance performance and cycle stability.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Shuang Xi, Xing-Wei Gao, Xi-Ming Cheng, Hui-Long Liu
Summary: This study reports the fabrication of a highly flexible and conductive microporous graphene-based electrode using direct laser writing combined with KOH activation. The electrode is then decorated with electrochemically deposited MnO2 to form a flexible thin-film electrode. The hybrid electrode shows high areal capacitance and excellent electrochemical performance, making it suitable for flexible supercapacitor applications.
NEW CARBON MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Jianghe Liu, Zeba Khanam, Sultan Ahmed, Ting Wang, Hengtai Wang, Shenhua Song
Summary: The gel electrolyte based on the PVA/Zn/ethylene glycol system shows high ionic conductivity and excellent antifreezing performance. The antifreezing Zn-ion hybrid supercapacitor fabricated with this gel electrolyte exhibits outstanding electrochemical properties and cyclic stability, even under low temperatures, demonstrating its potential for flexible energy storage devices in subzero-temperature environments.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Energy & Fuels
Yanmin Wang, Xueliang Wu, Yongqin Han, Tingxi Li
Summary: This review systematically summarized the key components, preparation techniques, strategies for improving electrochemical performance, natural resource utilization methods, and future research directions of flexible supercapacitors.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Materials Science, Multidisciplinary
Feng Shao, Yaqiong Niu, Bin Li, Gang Li, Zhi Yang, Yanjie Su, Yafei Zhang, Nantao Hu
Summary: Graphene/polyaniline composite with binary nanosheet frameworks show promise as high-capacity flexible electrodes for supercapacitors. The novel morphology of polyaniline nanosheets, synthesized without additional template material, demonstrate excellent pseudocapacitance properties. The stacked framework of polyaniline nanosheets and reduced graphene oxide can achieve high specific areal capacitance even with high weight content.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Luoqi Mo, Hao Liu, Zhiming Liu, Xiaokai Xu, Bingfu Lei, Jianle Zhuang, Yingliang Liu, Chaofan Hu
Summary: This study achieved multicolor long afterglow in aqueous solution by incorporating phosphorescent CDs and fluorescent dyes into sub-20 nm monodispersed silica nanoparticles. The silica matrix stabilized triplet excitons of CDs and facilitated cascade Forster resonance energy transfer, enabling intensive multicolor long afterglow with adjustable wavelength and large Stokes shift. The study also designed time-resolved, color multiple information encryptions and achieved high signal-to-noise ratio in in vivo afterglow imaging, making in vivo bioimaging portable and inexpensive.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Juqing Li, Yanhong Fan, Tongtong Xuan, Haoran Zhang, Wei Li, Chaofan Hu, Jianle Zhuang, Ru-Shi Liu, Bingfu Lei, Yingliang Liu, Xuejie Zhang
Summary: All-inorganic CsPbBr3 perovskite quantum dots offer high quality, stability, and easy preparation, making them promising for breakthrough applications in the field of wide color gamut backlight displays.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Jiemin Qiu, Weihao Ye, Xiaokai Xu, Baoyan Guo, Ruizhe Wang, Chaofan Hu, Jianle Zhuang, Hanwu Dong, Guangqi Hu, Yingliang Liu
Summary: This study proposed a method to prepare UV absorbers by mineralizing CaCO3. Carbon dots with negative charge and rich functional groups were synthesized to induce the formation of CaCO3 with different morphologies and strong UV absorption properties. Mixing it with polyurethane improves the UV resistance and mechanical properties of the film.
CRYSTAL GROWTH & DESIGN
(2022)
Article
Chemistry, Multidisciplinary
Ping Liang, Yihao Zheng, Xingcai Zhang, Haopeng Wei, Xiaokai Xu, Xianfeng Yang, Huihong Lin, Chaofan Hu, Xuejie Zhang, Bingfu Lei, Wai-Yeung Wong, Yingliang Liu, Jianle Zhuang
Summary: A novel and universal strategy, called CDs-in-YOHF, is proposed to generate multicolor and long-wavelength RTP by confining various CDs in the YOHF matrix. The mechanism of the triplet emission of CDs is related to the space confinement, the formation of hydrogen bonds and C-F bonds, and the electron-withdrawing fluorine atoms. The resulting CDs@YOHF exhibits excellent photostability, thermostability, chemical stability, and temporal stability.
Article
Nanoscience & Nanotechnology
Congcong Chen, Zhiqiang Xu, Jiemin Qiu, Weihao Ye, Xiaokai Xu, Ruizhe Wang, Chaofan Hu, Jianle Zhuang, Bingfu Lei, Wei Li, Xuejie Zhang, Guangqi Hu, Yingliang Liu
Summary: A full-band carbon dot ultraviolet absorber was synthesized by expanding the CD pi-conjugation domain, and successfully applied for UV protection and UV removal in LEDs, providing effective methods for the development of high-efficiency, non-toxic antiaging materials and healthy lighting devices.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Jiemin Qiu, Weihao Ye, Xiaokai Xu, Congcong Chen, Zhiqiang Xu, Bingfu Lei, Chaofan Hu, Jianle Zhuang, Hanwu Dong, Guangqi Hu, Yingliang Liu
Summary: This study synthesized efficient full-band absorbers based on carbon polymer dots (CPDs) and applied them as sunscreens, which demonstrated excellent anti-UV ability and a high sun protection factor (SPF).
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Xiaokai Xu, Rongxin Shen, Luoqi Mo, Xianfeng Yang, Xing Chen, Haozhe Wang, Yadong Li, Chaofan Hu, Bingfu Lei, Xuejie Zhang, Qiuqiang Zhan, Xingcai Zhang, Yingliang Liu, Jianle Zhuang
Summary: In this study, upconversion nanoparticles (UCNPs) were applied on lettuce leaves and found to increase the photosynthesis rate, upregulate photosynthesis gene expression, and significantly increase the wet and dry weight of the leaves.
Article
Chemistry, Multidisciplinary
Zhijun Wan, Yuemiao Li, Yizi Zhou, Dongping Peng, Xuejie Zhang, Jianle Zhuang, Bingfu Lei, Yingliang Liu, Chaofan Hu
Summary: In this study, high-efficiency hydrophilic yellow emissive CDs (Y-CDs) with aggregation-induced emission (AIE) characteristics are synthesized by a one-pot microwave method. Y-CDs show weak yellow emission in aqueous solutions, but exhibit a significantly enhanced photoluminescence quantum yield (PLQY) in the solid state. The AIE characteristic of Y-CDs is derived from the suppression of surface piperazine groups motions and decrease of the non-radiative rate.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Hao Liu, Yikai Chen, Luoqi Mo, Fangdong Long, Yixiao Wang, Zhouyi Guo, Haolin Chen, Chaofan Hu, Zhiming Liu
Summary: This study proposes a new teeth whitening technique using afterglow photodynamic therapy (aPDT), which can efficiently whiten teeth without the use of harmful chemicals or strong light irradiation. The method of embedding carbon dots in silica nanoparticles extends the lifetime of reactive oxygen species, thereby allowing for the thorough removal of deep enamel stains.
Review
Chemistry, Physical
Zhun Ran, Jinkun Liu, Jianle Zhuang, Yingliang Liu, Chaofan Hu
Summary: Carbon dots, as emerging luminescent materials, have attracted researchers' attention. However, there is a lack of systematic analysis on the preparation strategy and luminescence mechanism of multicolor afterglow from carbon dots-based long afterglow materials. This review summarizes the preparation strategies and luminescence mechanisms, and discusses the challenges and future development directions in this field.
Article
Nanoscience & Nanotechnology
Weihao Ye, Jiemin Qiu, Zhiqiang Xu, Congcong Chen, Guangqi Hu, Chaofan Hu, Jianle Zhuang, Wei Li, Xuejie Zhang, Bingfu Lei, Yingliang Liu
Summary: In this study, carbon dots (CDs) were synthesized using a hydrothermal method and modified with sodium docusate to enhance their UV absorption properties. The resulting AOT-CDs showed strong absorption of UVA and UVB but remained transparent in the visible region. They also exhibited good chemical and thermal stability and are potential candidates for next-generation UV absorbents.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ping Liang, Yihao Zheng, Fengru Liu, Huaiyu Shao, Chaofan Hu, Bingfu Lei, Xuejie Zhang, Yingliang Liu, Jianle Zhuang, Xingcai Zhang
Summary: In this study, a new kind of carbon dot-based luminescent material was successfully synthesized and combined with a YF3 substrate to achieve multimode luminescence and high stability. This material exhibited blue fluorescence, green room-temperature phosphorescence, and upconversion luminescence under excitation of ultraviolet and near-infrared light. The stability of the material was greatly improved due to the strong protection of the YF3 substrate. This research provides a general synthesis strategy for achieving multimode luminescence and high stability of CD-based luminescent materials and opens up new opportunities for their applications in advanced anti-counterfeiting and information encryption.
Review
Chemistry, Multidisciplinary
Xiaoyan He, Yihao Zheng, Chaofan Hu, Bingfu Lei, Xingcai Zhang, Yingliang Liu, Jianle Zhuang
Summary: This article provides a detailed review of the recent advances in the application of carbon dots (CDs) embedded in various inorganic matrices (IMs), as well as a summary of the interaction and luminescence mechanisms between CDs and IMs. The synthetic strategies of constructing composites and the roles of IMs in facilitating the applications of CDs are emphasized. The article also proposes future research directions and challenges in this field.
MATERIALS HORIZONS
(2024)
Article
Agriculture, Multidisciplinary
Zhiwei Huang, Baoyan Guo, Yujie Zou, Jingyi He, Chaofan Hu, Jianle Zhuang, Yingliang Liu
Summary: Different types of citric acid-based carbon dots were synthesized and used for culturing Italian lettuce. They were found to promote the growth and enhance the nutrient qualities of lettuce, with Mg,N-CDs showing the best promotion effect.
ACS AGRICULTURAL SCIENCE & TECHNOLOGY
(2022)
Review
Materials Science, Multidisciplinary
Baoyan Guo, Guo Liu, Chaofan Hu, Bingfu Lei, Yingliang Liu
Summary: The overuse of antibiotics has led to the emergence of drug-resistant bacteria, prompting the search for alternative antimicrobial agents. Carbon dots, as a new member of the nanomaterial family, show great potential in combating bacteria and viruses.
MATERIALS ADVANCES
(2022)
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)
