Article
Nanoscience & Nanotechnology
Yuhan Wu, Rui Xu, Zhijie Wang, Xiaorui Hao, Chenglin Zhang, Huaping Zhao, Wei Li, Shouzhi Wang, Yulian Dong, Zhitao Huang, Yong Lei
Summary: The study on developing electrode materials for potassium-ion batteries is crucial for the future of battery technology. The construction of carbon-free crystal-like Fe1-xS as a PIB anode demonstrated excellent electrochemical performance and long cycling life, showing great potential for practical applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Xing He, Dan Liu, Deyu Qu, Junsheng Li, Haolin Tang, Xiong Zhang, Hanping Chen
Summary: A facile solid-state method was developed to prepare a metal sulfide/carbon composite, which exhibited excellent sodium storage performance in sodium-ion batteries with competitive reversible capacity, excellent rate capacity, and good cyclic stability. Additionally, the composite showed a potential application in sodium-ion hybrid capacitors with 80% capacity retention after 4500 cycles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Yifan Xu, Jianbo Li, Jianlu Sun, Liping Duan, Jianzhi Xu, Dongmei Sun, Xiaosi Zhou
Summary: Potassium-ion batteries (PIBs) have attracted significant interest due to their low cost and high power and energy densities. In this study, researchers successfully implanted ultrafine Fe7S8 nanocrystals into hollow carbon nanospheres to address the issue of electrode material destruction caused by the insertion/extraction of K+. The Fe7S8 @HCSs exhibited impressive K+ storage capacity and rate capacity as an anode material for PIBs, and showed potential for large-scale energy storage applications when assembled with a specific cathode material.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Yefeng Feng, Kaidan Wu, Shanshan Wu, Ming Xue
Summary: Potassium-ion batteries are attracting attention due to their rich potassium storage and low cost. However, the large radius of K+ hinders its smooth embedding and extraction from the electrode material, resulting in poor electrode dynamics and structural instability. In this study, carbon spheres coating and embedding (CSs@Ti3C2) were developed on the surface and interlayer of Ti3C2 MXene composite to improve the potassium ion insertion/extraction and overall performance of the battery. The CSs@Ti3C2 exhibited excellent cycling capacity (195.8 mAhg-1 at 100 mAg-1 after 200 cycles) and long-life charge and discharge (143.3 mAhg-1 at 500 mAg-1 after 1000 cycles). This research provides a new method for achieving high-performance MXene as an anodic material for energy storage systems.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Jiandongyong Liu, Xu Yu, Jingze Bao, Chuan-Fu Sun, Yafeng Li
Summary: Carbon-supported SnS composite prepared via solvothermal process and thermal calcination exhibits good potassium storage performance in potassium-ion batteries, with high capacity and long-cycling stability.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Review
Chemistry, Analytical
Nadeem Khan, Guihong Han, Shaukat Ali Mazari
Summary: Potassium ion batteries are attractive candidates for large-grid electrochemical energy storage systems due to their substantial reserves and low cost. However, the large ionic size of potassium ions leads to challenges in designing anode materials with fast ion reaction kinetics and stable solid electrolyte interfaces. Carbon nanotubes have shown promise as anode materials for potassium ion batteries due to their unique structural and electrical properties. Various synthesis methods for carbon nanotube-based anodes have been studied, with recent focus on developing nanoarchitectures to enhance their capacity and lifetime.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Physical
Chang Li, Yushuang Xu, Wenjun Deng, Na Shen, Yan Chen, Chao Huang, Jinlin Zhu, Runduo Zhu, Wenxia Zou, Rui Li
Summary: In this study, an aqueous iron-organic battery was constructed using polyaniline as the cathode, Fe plate as the anode, and Fe(CF3SO3)2 as the electrolyte. The battery demonstrated a hybrid storage mechanism of iron plating/stripping in the anode and transmission of CF3SO3- in the cathode. The polyaniline-Fe battery exhibited high specific capacity and stable cycle performance, providing a new direction for the development of aqueous iron-ion batteries.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Yefeng Feng, Kaidan Wu, Chenhao Xu, Shanshan Wu, Zhiling Guo, Miao He, Xuezhu Xu, Ming Xue
Summary: In this study, cellulose/lignin-based carbon nanobelt aerogels coating on VSe2 nanosheets were successfully fabricated as anode materials for potassium-ion batteries. The VSe2@CNB composite showed improved potassium-storage performance and long-term cycling stability.
JOURNAL OF POWER SOURCES
(2022)
Article
Multidisciplinary Sciences
Yanfei Zeng, Xinyi Zhang, Xianxing Mao, Pei Kang Shen, Douglas R. MacFarlane
Summary: The Ni-Fe battery is a promising alternative to lithium-ion batteries due to its long life, high reliability, and eco-friendly characteristics. By controlling the valence state of iron and coupling with carbon, the issues of passivation and self-discharge of the iron anode can be solved. The hybrid anode developed shows high specific capacity and cyclic stability, with a Ni-Fe button battery exhibiting specific device energy and good capacity retention and coulombic efficiency.
Article
Chemistry, Physical
Hongqiang Xu, Boshi Cheng, Quan Du, Yuting Zhang, Haojie Duan, Ishioma L. Egun, Bo Yin, Haiyong He
Summary: By using esterification reaction, the precursors of two types of carbon are connected at the molecular level and enhance the synergistic effects in hybrid carbon, leading to improved electrochemical performance.
Article
Chemistry, Physical
Shasha Wang, Qing Wang, Wuxin Liu, Yan Wang, Yuli Wei, Shaohua Luo, Pengqing Hou, Yahui Zhang, Shengxue Yan, Xin Liu
Summary: Due to its abundant precursors, simple preparation, and environmental friendliness, nitrogen-doped carbon is regarded as a promising anode material for potassium-ion batteries (PIBs). In this study, nitrogen-doped carbon material (NC-2) was synthesized using exfoliated g-C3N4 as a precursor, combined with sucrose, and subjected to hydrothermal and high-temperature pyrolysis. NC-2 exhibited a high nitrogen content, porous layered structure, and large interlayer spacing. As the anode for PIBs, NC-2 demonstrated a high reversible capacity of 261.07 mAh g-1 at 0.1 A g-1 and an impressive rate performance of 153.36 mAh g-1 at 2 A g-1. The excellent performance of NC-2 can be attributed to its porous layered structure, enlarged interlayer spacing promoting ion diffusion, and the presence of abundant active sites due to nitrogen doping. These results indicate the great potential of NC-2 as a PIBs anode material.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Yefeng Feng, Kaidan Wu, Shanshan Wu, Yuanyuan Guo, Miao He, Ming Xue
Summary: In this study, a novel carbon quantum dot-derived carbon nanosphere-encapsulated Ti3C2 MXene (CNS@Ti3C2) composite was synthesized by polymer pyrolysis. The composite can stabilize the layered structure of Ti3C2 MXene, improve its cycle life, and enhance the potassium storage power. The CNS@Ti3C2 composite possesses excellent synergy, resulting in a high reversible capacity and cycle life.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Kaidan Wu, Yefeng Feng, Yandong Xie, Junming Zhang, Deping Xiong, Li Chen, Zuyong Feng, Kunhua Wen, Miao He
Summary: Potassium ion batteries (PIBs) are attractive due to abundant potassium resources, low cost, and high potential. However, the larger radius of K+ compared to Na+/Li+, poor kinetics, and unstable structure result in inferior electrochemical performance. In this study, a 3D fluorine-doped carbon@Ti3C2 MXene (3D FC@Ti3C2) composite is proposed as an anode material for PIBs. The composite exhibits enhanced electrochemical properties, including high capacity and cyclic stability, attributed to the protective carbon coating, fluorine-doped carbon with more defects and active sites, enlarged interlayer spacing, and the 3D interconnected carbon framework.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Nesrin Bugday, Mehmet Nurullah Ates, Ozgur Duygulu, Wentao Deng, Xiaobo Ji, Serdar Altin, Sedat Yasar
Summary: Composite anode materials Fe/Co/S@NPC-T were synthesized by sulfurization and pyrolysis of Fe/Co-based ZIF-12. The materials exhibited good structural properties and rechargeable performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Lina Wang, Yun Zhao, Lijuan Cao, Yong Li, Gaoyi Han, Canliang Ma, Zongping Shao
Summary: Surface engineering of exfoliated graphite (EG) through a stepwise gas-phase strategy has been carried out to improve the performance of potassium-ion batteries (PIBs). The modified EG forms a novel micro/nano-multiscale matrix structure, resulting in enhanced reversible capacity, cycling stability, and rate capability of the PIB electrodes. This surface modification strategy provides a new avenue for the development of high-performance electrode materials in PIB applications.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Wei Zong, Hele Guo, Yue Ouyang, Lulu Mo, Chunyang Zhou, Guojie Chao, Johan Hofkens, Yang Xu, Wei Wang, Yue-E Miao, Guanjie He, Ivan P. Parkin, Feili Lai, Tianxi Liu
Summary: The study successfully constructed an expanded 2D rhenium selenide intercalated by nitrogen-doped carbon hybrid with a strong-coupled interface and weak van der Waals forces, improving conductivity and accelerating reaction kinetics. Results showed that the hybrid capacitor has enhanced rate capability and long-term cyclability, as well as favorable sodium storage kinetics, making it applicable in a wide temperature range.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Environmental
Songsong Liu, Yulin Ma, Jiajun Wang, Pengjian Zuo, Chunyu Du, Geping Yin, Yunzhi Gao
Summary: In this study, a homogeneous lithium fluoride (LiF) protective layer was constructed on the Li anode using a vacuum evaporation method, leading to improved stability and inhibiting dendrite growth. The LiF-protected Li anode showed 2.5 times longer lifespan and slower capacity attenuation in full cell configurations compared to control cells, indicating the significant role of a homogeneous protective layer in stabilizing Li anodes for rechargeable lithium metal batteries.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Guoquan Suo, Syed Musab Ahmed, Yan Cheng, Jiaqi Zhang, Zongyou Li, Xiaojiang Hou, Yanling Yang, Xiaohui Ye, Lei Feng, Li Zhang, Qiyao Yu
Summary: A new nitrogen doped carbon coating CoS2/CuCo2S4 heterostructure was developed as an anode for potassium ions batteries, demonstrating outstanding rate capability and long-term cycling life. Additionally, the conversion reaction mechanism in the anode was revealed through ex situ XRD characterizations.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Renlong Li, Chuankai Fu, Binghan Cui, Can Cui, Xue Mu, Yunzhi Gao, Geping Yin, Pengjian Zuo
Summary: Si-based anode materials have become popular in next generation lithium-ion batteries due to their high theoretical capacity, low operation potential, environmental friendliness, and low cost. However, the volume changes of Si-based anode during charging and discharging processes result in unstable solid electrolyte interphase (SEI) films and poor cycling performance. This study proposes the use of 2-isocyanatoethyl methacrylate (IEM) and fluoroethylene carbonate (FEC) as functional electrolyte additives to construct stable and durable inorganic-organic composite SEI films on Si@Graphene (Si/G) anode surfaces, leading to enhanced cycling stability and rate capability.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Xue Mu, Chuankai Fu, Renlong Li, Chunyu Du, Yunzhi Gao, Geping Yin, Pengjian Zuo
Summary: A novel modification method is used to adjust the O/Si ratio on the surface of SiOx, leading to high reversible capacity and good rate capability. This provides a simple and feasible strategy for the development of high-performance SiOx anodes.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Multidisciplinary
Yan Zhang, Cong Kang, Wei Zhao, Yajie Song, Jiaining Zhu, Hua Huo, Yulin Ma, Chunyu Du, Pengjian Zuo, Shuaifeng Lou, Geping Yin
Summary: Single-atom catalysts are important for improving the performance of lithium-sulfur batteries. In this study, novel single-atom Nb catalysts were designed to enhance sulfur immobilization and catalysis. The Nb-N4 active moiety possessed unfilled antibonding orbitals, promoting hybridization and anchoring of lithium polysulfides. The Nb-SAs@NC cell exhibited high capacity retention, superior rate performance, and competitive areal capacity, providing new possibilities for high-energy-density Li-S batteries.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Mi Guo, Liang Luo, Shulin Chen, Zhenzhen Wang, Pengjian Zuo, Zhenbo Wang
Summary: In this study, dual-modification of LiNi0.88Co0.09Al0.03O2 was achieved by LiBO2-coating and Mg-doping, aiming to stabilize its crystal structure and reduce its surface activity. The dual-modification effectively improved the discharge ability, rate capability, and cycling behavior of LiNi0.88Co0.09Al0.03O2. The co-modification cathode showed excellent prolonged cycling stability in cylindrical 18650 batteries at both room and high temperature.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Materials Science, Ceramics
Hui Liu, Li Zhang, Yaozhen Shen, Xiaojiang Hou, Xiaohui Ye, Guoquan Suo, Beibei Zhu, Yanling Yang
Summary: In this work, the thermoelectric performance of Bi2S3 was optimized by Cu doping using a facile hydrothermal method combined with spark plasma sintering. The introduction of Cu doping increased the carrier concentration and electrical conductivity of Bi2S3, leading to improved thermoelectric properties. Additionally, the micro-nano pores formed after spark plasma sintering benefited the reduction of lattice thermal conductivity. A maximum ZT value of 0.3 at 573 K was achieved in the Bi1.985Cu0.015S3 sample. This study provides a new strategy to achieve low thermal conductivity and high ZT value in Bi2S3-based thermoelectric materials.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Dongdong An, Yu Sun, Yan-Ling Yang, Xiao-Lei Shi, Hua-Jun Chen, Li Zhang, Guoquan Suo, Xiaojiang Hou, Xiaohui Ye, Siyu Lu, Zhi-Gang Chen
Summary: The strategy of purifying wastewater with waste materials (PWWM) can improve the secondary utilization of industrial waste while reducing environmental pollution. However, its low purification efficiency of organic pollutants and difficult secondary utilization process have limited its extensive use. In this study, zinc aluminum silicate (ZAS) was used to modify waste granular red mud (GRM) to create a recoverable adsorbent called ZAS/GRM. The ZAS was found to have exceptional adsorption performance and can effectively solidify heavy metal ions, while the design of many voids in the ZAS/GRM adsorbents significantly improved the removal efficiency of congo red (CR) organic dye.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Guoquan Suo, Yan Cheng, Rongrong Mu, Xiaojiang Hou, Yanling Yang, Xiaohui Ye, Li Zhang
Summary: This study reports a flexible cathode material for ZIBs, composed of carbon fiber-supported MnMoO4 nanostructures protected with N-doped carbon coatings (CF/MnMoO4@NCs). The N-doped carbon coating on MnMoO4 nanostructures can buffer volume expansion of MnMoO4, and the CF and NCs with good electronic conductivity can facilitate quick electrons transportation in the CF/MnMoO4@NCs system. The optimized CF/MnMoO4@NCs cathode exhibits high capacity and good rate capability, delivering outstanding discharge capacity and cycling stability, offering constructive directions for designing high-performance cathode materials for ZIBs.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Xue Mu, Chuankai Fu, Tiansheng Mu, Renlong Li, Yunzhi Gao, Chunyu Du, Geping Yin, Pengjian Zuo
Summary: The inhomogeneous nature of SiOx anode material affects its electrochemical performance, and modification can improve its cyclic performance.
JOURNAL OF POWER SOURCES
(2023)
Article
Multidisciplinary Sciences
Zhijing Yu, Wei Wang, Yong Zhu, Wei-Li Song, Zheng Huang, Zhe Wang, Shuqiang Jiao
Summary: The authors develop a layered quasi-solid battery with double reaction zones to suppress the shuttle effect of conversion-type materials and improve both energy density and cycling life.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Applied
Renlong Li, Binghan Cui, Qingjie Zhou, Xue Mu, Yunzhi Gao, Geping Yin, Chuankai Fu, Pengjian Zuo
Summary: An organic-inorganic composite interfacial layer rich in benzene ring groups, polyisocyanates, and LiF was successfully obtained on SiOx anode by introducing specific additives, which effectively improved its cycling performance.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Rang Xiao, Cong Kang, Yang Ren, Jiyuan Jian, Binghan Cui, Geping Yin, Yulin Ma, Pengjian Zuo, Guokang Han, Chunyu Du
Summary: This study successfully improves the decomposition efficiency of Li2C2O4 by utilizing the liquid-solid synergistic effect of NaNO2 additive and NCM cathode material, thus promoting its practical application in lithium-ion batteries.
CHEMICAL COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Zejian Fang, Shukai Ding, Gaohui Du, Yong Zhu, Christophe A. Serra, Bingshe Xu, Qingmei Su, Guoquan Suo, Wei Wang
Summary: Anode-free Li-metal batteries (AFLBs) are attracting attention due to their high capacity and the absence of Li metal. However, the current manufacturing process is complex and non-reproducible. This study presents a new manufacturing method that achieves uniform Li plating and improves battery performance.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
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)
