Article
Chemistry, Physical
Jian Zhao, He Cheng, Huanyu Li, Yan-Jie Wang, Qingyan Jiang, Lina Yang, Alan Meng, Jianfeng Huang, Changlong Sun, Huifang Li, Zhenjiang Li, Jiujun Zhang
Summary: By utilizing MoO3-x nanochain-like hybrid nanostructured composite as the negative electrode and NaxMnO2 nanosheet arrays as the positive electrode, assembled into an ASC, high energy/power densities, long lifespan, and superior cyclic stability can be achieved.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Engineering, Environmental
Jie Mei, Yuanzhi Chen, Wanjie Xu, Wei He, Laisen Wang, Qingshui Xie, Dong-Liang Peng
Summary: Multi-strategy synergistic Li1.2Mn0.54Ni0.13Co0.13O2 cathode materials with flourine-doping and surface coating of oxygen vacancy bearing CeO2 have been successfully prepared. The modified cathode materials exhibit improved cycling stability and restrained voltage attenuation compared to pristine LLO. This work demonstrates the effectiveness of multi-strategy synergy for enhancing the electrochemical performance of Li-rich layered oxides.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Weili Teng, Qinqin Zhou, Guanlin Lv, Peng Hu, Yucheng Du, Hongyi Li, Yuxiang Hu, Wenxin Liu, Jinshu Wang
Summary: A ternary PEDOT:PSS/rGO/PPy fiber electrode was constructed by chemical polymerization of pyrrole on a PG hybrid hydrogel fiber. The electrode shows high specific capacitance, fast charge/discharge rate, and long-term cycling stability, making it suitable for energy storage in wearable electronics.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Xian-Zhi Zhai, Jin Qu, Juan Wang, Wei Chang, Hong-Jun Liu, Yu-Hao Liu, Hongfu Yuan, Xiaofeng Li, Zhong-Zhen Yu
Summary: In this study, yolk-shell structured K-birnessite@mesoporous carbon nanospheres with rich oxygen vacancies were successfully synthesized for the first time, showing excellent electrochemical performances with high reversible capacities and exceptional cyclability. The diffusion-driven strategy and etching effect of KOH played important roles in regulating the transport of reaction ions and generating intercalated K+ ions and abundant oxygen vacancies, which led to superior electrochemical kinetics.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Jing Wang, Youlong Xu, Yao Niu, Yali Liu, Xianghua Yao
Summary: A sol-gel method was used to evenly deposit Li3PO4 with good ionic conductivity on the surface of spinel lithium manganate, aiming to improve the stability and cycling of the spinel structure by creating an epitaxial layer. The presence of the Li3PO4 coating prevents direct contact between the cathode surface and electrolyte, enhancing stability and reducing manganese dissolution. The Li3PO4 layer also improves the diffusion coefficient of lithium ions and reduces transfer resistance, resulting in improved electrochemical performance.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Minzhi Du, Kun Zhang
Summary: We address the poor electron and ion transport in transition-metal-oxide-based electrochemical electrodes by developing a conducting encapsulation strategy. The performance of the composite electrode is substantially enhanced, improving the rate capability, capacitance retention, and specific capacitance.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
K. M. Yang, P. Z. Tang, Q. Zhang, H. Y. Ma, E. Q. Liu, M. Li, X. Zhang, Jin Li, Y. Liu, T. X. Fan
Summary: The study shows that the graphene/copper interface exhibits higher defect annihilation capability compared to HAGBs in copper, with a slightly higher and larger stress field, which contributes to enhanced defect absorption capability. These findings are important for understanding and designing carbon/metal composites with superior irradiation tolerance.
SCRIPTA MATERIALIA
(2021)
Article
Chemistry, Multidisciplinary
Xinli Ye, Junxiong Zhang, Xiaomin Ma, Ze Xiang Shen
Summary: Potassium-ion batteries (KIBs) are gaining attention due to their low cost and abundance. However, the large-sized potassium ions limit their capacity and stability. In this study, we synthesized a Co9S8/GF nanocomposite by solvothermal and heat treatment methods. The Co9S8/GF nanocomposite showed a capacity of 345.65 mAh center dot g-1 after 600 cycles at 500 mA center dot g-1 and 343.06 mAh center dot g-1 after 1360 cycles at 5000 mA center dot g-1 in KIBs. The unique structure of the nanocomposite allows for volumetric changes, making it a promising technology for future KIB development.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Physical
Shandong Tan, Zhiyuan Sang, Zhehan Yi, Jingdong Guo, Xueqi Zhang, Pinxiang Li, WenPing Si, Ji Liang, Feng Hou
Summary: Layered vanadium oxides coated with poly(3,4-ethylenedioxythiophene) and Mn2+-intercalated with rich oxygen vacancies are prepared as cathodes for zinc-ion batteries. The PEDOT coating improves electron conductivity, while Mn2+ intercalation increases interlayer spacing for rapid Zn2+ ion diffusion. The pre-intercalated Mn2+ ions act as pillars to stabilize the structure, and the PEDOT coating prevents direct contact of vanadium oxides with electrolyte, inhibiting dissolution during cycling. The MnVOH@PEDOT cathode exhibits superior discharge capacity, favorable rate capability, and satisfying cyclic durability.
Article
Chemistry, Inorganic & Nuclear
Nana Zhang, Guike Zhang, Ye Tian, Yanxia Tang, Ke Chu
Summary: This study demonstrates the feasibility of using pyrite FeS2 as a catalyst for electrocatalytic nitrate-to-ammonia conversion (NO3RR). FeS2/RGO catalyst achieves high NH3-Faradaic efficiency, excellent stability, and efficient activation of NO3- on surface Fe sites.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Mingxi Gao, Chenhui Yan, Qinong Shao, Jian Chen, Chenyang Zhang, Gairong Chen, Yinzhu Jiang, Tiejun Zhu, Wenping Sun, Yongfeng Liu, Mingxia Gao, Hongge Pan
Summary: The novel perovskite electron-ion mixed conductor Nd0.6Sr0.4CoO3 can effectively enhance the cycling stability and rate capability of Li- and Mn-rich oxide cathode materials in lithium-ion batteries. Coating Li1.2Ni0.13Co0.13Mn0.54O2 with 3 wt% NSCO significantly improves its cycling performance and rate capability, with enhanced electronic conductivity and Li+ diffusion coefficient.
Article
Chemistry, Multidisciplinary
Yang Ren, Lizhi Xiang, Xucai Yin, Rang Xiao, Pengjian Zuo, Yunzhi Gao, Geping Yin, Chunyu Du
Summary: This study demonstrates the successful fabrication of ultrathin Si nanosheets using a unique etching-reduction protocol. By hybridizing them with graphene, the resulting Si-NSs@rGO material exhibits excellent rate capability, long cycling lifespan, and high average Coulombic efficiency in lithium-ion battery applications. The ultrathinness of Si nanosheets greatly improves the diffusivity and reversibility of Li+ ions.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Junqin Zheng, Yuda Lin, Changze Du, Xinying Chen, Jiaxin Li, Yongping Zheng, Qian Feng, Zhigao Huang
Summary: The hierarchical composite of fluorine-doped MnO and fluorographene (F-MnO@FG) was synthesized using a hydrothermal process combined with annealing. It exhibited higher capacity and prolonged cycling stability compared to other carbonaceous MnO-based anodes for lithium-ion batteries (LIBs). The composite's structure, with the advantages of F doping and abundant oxygen vacancies, contributed to its high performance. The rational preparation method can be applied to similar materials for promising LIB anodes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Liangqing Hu, Kening Liu, Yanming Guo, Jing Feng, Xuejiao Ding, Weixia Li, Xiaojiang Su, Mingming Gao, Zhiyong Li, Hexin Zhang, Yueming Ren, Tong Wei
Summary: In this study, RGO/WOCu composite catalysts with abundant oxygen vacancies were prepared by the hydrothermal method, which showed enhanced performance in electrochemical nitrogen reduction reaction (NRR) under ambient conditions.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Feng Jin, Xiaoyin Xue, Yin Zhao, Liyi Shi, Zhuyi Wang, Meihong Zhang, Yi Wang, Jiefang Zhu, Shuai Yuan
Summary: Nanosized tetragonal BaTiO3 modification of single-crystal Ni-rich cathodes improves the diffusion coefficient of lithium ions, enhances charge distribution, and stabilizes the cathode-electrolyte interface, leading to increased discharge capacity and improved cycle performance.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(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)