CHEMICAL ENGINEERING JOURNAL
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2021
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IF 13.273
Qingzhao Wu,Bochao Chen,Haonan Xie,Xiangren Bai,Ming Liang,Zhiyi Wu,Xiaoying Jin,Chunnian He,Naiqin Zhao
Bismuth-antimony (BiSb) alloy combines the low volume expansion of Bi with the high theoretical capacity of Sb and very suitable for application for energy storage. However, the low reversible capacity and poor conductivity of BiSb are still a challenge for promoting their potassium (K) storage properties. Herein, the homogeneous BiSb nanoconfined in three-dimensional (3D) carbon framework were synthesized by NaCl-template assisted method. In the as-constructed architecture, the nano-sized BiSb alloy particles not only shorten the electronic transport route, but also offer adequate K -storage active sites by virtue of the interface between binary alloy and graphene-like coating layers, which were theoretically validated by the density functional theory simulations. Furthermore, the carbon structure can effectively alleviate the internal stress of BiSb during the charging and discharging processes due to the robust integrated structure, i.e. graphene-like layer coated BiSb that embedded into 3D carbon architecture. As a result, the composite electrode exhibits a stable cycling of 303.5 mA h g −1 after 1000 cycles at 500 mA g −1 , and a high-rate performance of 246.8 mA h g −1 at 2 A g −1 . This work indicates that the enhancement of interfacial K -storage through biphasic synergistic effect will serve as a reference for the development of other energy storage materials.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOM
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2022
·Vol. 74
·期 3
·915-923
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IF 2.597
Fu Chengcheng,Ru Juanjian,Hua Yixin,Xue Yu,Bu Jiaojiao,Wang Zhiwei,Zhang Yuan
For the decontamination of Pb in a contaminated Sb alloy, the separation behaviors of Sb and Pb are investigated in choline chloride-ethylene glycol deep eutectic solvent (ChCl-EG DES) at 323–363 K. Linear sweep voltammetry measurements are recorded for determining the electrochemical behaviors of Sb and Pb in a 0.1-M SbCl 3 +ChCl-EG solution. The oxidation potentials of Sb and Pb are + 0.021 V and − 0.05 V at 323 K, respectively, which implies that the addition of SbCl 3 benefits the dissolution of Sb, while that of Pb is opposite. In addition, the reduction potential of Sb(III) is more positive than that of Pb(II), which suggests that the separation of Sb from the Pb-containing Sb alloy is feasible. The effects of temperature and current density are discussed during the electrorefining process. The results show that high-purity Sb powders (99.978%) can be obtained at 30 mA cm −2 and 343 K, and that the current efficiency is about 95.42%.
研究领域:
材料科学
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冶金学
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环境化学
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应用电化学
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资源回收
✓ 已验证
DOI
高影响因子
CHINESE JOURNAL OF CATALYSIS
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2020
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IF 6.146
Shuaiqiang Jia,Qinggong Zhu,Haihong Wu,Meng'en Chu,Shitao Han,Ruting Feng,Jinghui Tu,Jianxin Zhai,Buxing Han
The exploration of efficient electrocatalysts for the reduction of CO 2 to C 2 H 4 is of significant importance but is also a challenging subject. Cu-based bimetallic catalysts are extremely promising for efficient CO 2 reduction. In this work, we synthesize a series of porous bimetallic Cu–Sb alloys with different compositions for the catalytic reduction of CO 2 to C 2 H 4 . It is demonstrated that the alloy catalysts are much more efficient than the pure Cu catalyst. The performance of the alloy catalysts depended strongly on the composition. Further, the alloy with a Cu:Sb ratio of 10:1 yielded the best results; it exhibited a high C 2 H 4 Faradaic efficiency of 49.7% and a high current density of 28.5 mA cm −2 at −1.19 V vs. a reversible hydrogen electrode (RHE) in 0.1 M KCl solution. To the best of our knowledge, the electrocatalytic reduction of CO 2 to C 2 H 4 using Cu–Sb alloys as catalysts has not been reported. The excellent performance of the porous alloy catalyst is attributed to its favorable electronic configuration, large surface area, high CO 2 adsorption rate, and fast charge transfer rate.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2017
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IF 7.504
Litao Yu,Jun Liu,Xijun Xu,Liguo Zhang,Renzong Hu,Jiangwen Liu,Lichun Yang,Min Zhu
The MOFs (metal–organic frameworks) have been extensively used for electrode materials due to their high surface area, permanent porosity, and hollow structure, but the role of antimony on the MOFs is unclear. In this work, we design the hollow spheres Ni-MOFs with SbCl3 to synthesize NiSb⊂CHSs (NiSb-embedded carbon hollow spheres) via simple annealing and galvanic replacement reactions. The NiSb⊂CHSs inherited the advantages of Ni-MOFs with hollow structure, high surface area, and permanent porosity, and the NiSb nanoparticles are coated by the formed carbon particles which could effectively solve the problem of vigorous volume changes during the Li+ insertion/extraction process. The porous and network structure could well provide an extremely reduced pathway for fast Li+ diffusion and electron transport and provide extra free space for alleviating the structural strain. The NiSb⊂CHSs with these features were used as Li-ion batteries for the first time and exhibited excellent cycling performance, high specific capacity, and great rate capability. When coupled with a nanostructure LiMn2O4 cathode, the NiSb⊂CHSs//LiMn2O4 full cell also characterized a high voltage operation of ≈3.5 V, high rate capability (210 mA h g–1 at a current density of 2000 mA g–1), and high Coulombic efficiency of approximate 99%, meeting the requirement for the increasing demand for improved energy devices.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
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2021
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IF 8.067
Ximeng Dong,Wenlin Cui,Wei-Di Liu,Shuqi Zheng,Lei Gao,Luo Yue,Yue Wu,Boyi Wang,Zipei Zhang,Liqiang Chen,Zhi-Gang Chen
As an eco-friendly thermoelectric material, SnTe has attracted extensive attention. In this study, we use a stepwise strategy to enhance the thermoelectric performance of SnTe. Firstly, AgCl is doped into SnTe to realize band convergence and enlarge the band gap of AgCl-doped SnTe. AgCl-doping also induces dense point defects , strengthens the phonon scattering, and reduces the lattice thermal conductivity . Secondly, Sb is alloyed into AgCl-doped SnTe to further optimize the carrier concentration and simultaneously reduce the lattice thermal conductivity , leading to improved thermoelectric dimensionless figure of merit, ZT . Finally, (Sn 0.81 Sb 0.19 Te) 0.93 (AgCl) 0.07 has approached the ZT value as high as ∼0.87 at 773 K, which is 272 % higher than that of pristine SnTe. This study indicates that stepwise AgCl-doping and Sb-alloying can significantly improve thermoelectric performance of SnTe due to synergistic band engineering, carrier concentration optimization and defect engineering.
研究领域:
材料科学
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热电学
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
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2020
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IF 6.215
Yaosheng Liu,Hanmeng Liu,Zhixia Yao,Yongxing Diao,Guangxing Hu,Qifang Zhang,Yujing Sun,Zhuang Li
pH electrodes exhibited wide applications in the fields of food science, environmental science, and bioanalytical analysis. In this work, we demonstrate the facile fabrication of silver-antimony (Ag–Sb) binary alloy electrodes through a one-step melt casting method. XRD, SEM and EDS were used to characterize the alloy electrodes. The response mechanism of the pH electrode was studied by Tafel plots, which clarified the role of metal (Sb) and metal oxide (SbO ads ) in the pH response process. The corrosion resistance of the alloy electrode was researched by electrochemical impedance spectroscopy (EIS), which proved the advantages of the Ag–Sb alloy electrodes. In addition, our Ag–Sb pH electrodes exhibited promising sensing performance with the near-Nernstian response sensitivity is 54.6 mV/pH. The other performances including response time, stability, reversibility, hysteresis, and temperature coefficient, also demonstrated that the Ag–Sb binary alloy electrodes have good pH speciality, and it will potential applications for environmental monitoring in situ. These research results can complement and perfect the theoretical basis of metal/metal oxide pH electrodes, thus guiding the preparation of metal/metal oxide pH electrodes and promoting the exact and extensive application of metal/metal electrodes in more aspects.
研究领域:
材料科学
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分析化学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
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2017
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IF 7.504
Jiachen Li,Jun Pu,Ziqiang Liu,Jian Wang,Wenlu Wu,Huigang Zhang,Haixia Ma
The energy and power densities of rechargeable batteries urgently need to be increased to meet the ever-increasing demands of consumer electronics and electric vehicles. Alloy anodes are among the most promising candidates for next-generation high-capacity battery materials. However, the high capacities of alloy anodes usually suffer from some serious difficulties related to the volume changes of active materials. Porous supports and nanostructured alloy materials have been explored to address these issues. However, these approaches seemingly increase the active material-based properties and actually decrease the electrode-based capacity because of the oversized pores and heavy mass of mechanical supports. In this study, we developed an ultralight porous nickel to scaffold with high-capacity SnSb alloy anodes. The porous-nickel-supported SnSb alloy demonstrates a high specific capacity and good cyclability for both Li-ion and Na-ion batteries. Its capacity retains 580 mA h g–1 at 2 A g–1 after 100 cycles in Li-ion batteries. For a Na-ion battery, the composite electrode can even deliver a capacity of 275 mA h g–1 at 1 A g–1 after 1000 cycles. This study demonstrates that combining the scaffolding function of ultralight porous nickel and the high capacity of the SnSb alloy can significantly enhance the electrochemical performances of Li/Na-ion batteries.
研究领域:
材料科学
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能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENERGY & FUELS
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2024
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IF 5.2
Xinye Li,Lingxing Zeng,Wenbin Lai,Zewei Lei,Mingyang Ge,Chaobin Fang,Bo Weng,Qinghua Chen,Mingdeng Wei,Qingrong Qian
Sodium/potassium-ion batteries (SIBs/PIBs) as alternatives complement of Li-ion batteries (LIBs) exhibit cost-effective, appropriate redox potential, and high energy density. Unfortunately, the large volumetric expansion and severe pulverization toward anode materials of SIBs/PIBs during the charge/discharge progress limit their practical implementations. In this work, selenium doped carbon nanofibers integrated with bismuth–antimony alloy nanocrystals (denoted as BiSb-Se/CNFs) have been fabricated as anode materials for SIBs/PIBs. The hierarchical carbon nanofiber frameworks in BiSb-Se/CNFs composite not only provide sufficient space to accommodate Na/K ions, ensuring high structural stability, but also facilitate rapid electron and ion transport, enhancing the redox reaction kinetic. As expected, the BiSb-Se/CNFs electrode demonstrates a superior sodium storage capacity of 370 mAh g–1 at current densities of 0.5 A g–1 after 650 cycles, withstanding a long-term cycling of 2000 cycles and showing a remarkable capacity up to 309 mAh g–1 at 2 A g–1. Moreover, an impressive potassium storage performance with a superior capacity and outstanding reversible stability can be observed over the BiSb-Se/CNFs electrode. This work elucidates the design of alloy-type electrodes with a high lifespan in both SIBs and PIBs, which provides inspiration for practical multiapplication scenarios for anodes.
研究领域:
材料科学
·
能源存储与转换
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）