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学者姓名：李钒
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Abstract ：
The slow kinetics of the oxygen evolution reaction (OER) has limited the development of new energy technologies. Transition-metal spinel oxides have become efficient catalysts owing to their outstanding OER catalytic activities. However, their activity and stability can be low owing to a deficiency of active sites, which needs to be solved. In this study, rare-earth element doping was used to adjust the internal charge redistribution strategy of spinel to significantly improve the OER performance. Pr-doped NiFe2O4 (Pr-NiFe2O4) exhibits an overpotential of 339 mV at a current density of 10 mA cm(-2). In situ Raman spectroscopy and density functional theory calculations indicate that this is attributed to the simultaneous activation of the surface active centers Fe-OOH and Ni-OOH by Pr doping, as Pr can regulate oxygen vacancies and adsorbed oxygen on the surface of catalyst and improve covalent bonding between O 2p and metal 3d orbitals. Moreover, surface valence state analysis and dissolution testing proved that Pr doping inhibits the excessive oxidation and dissolution of transition metals in the catalysts, effectively stabilizing the catalyst after 100 h of CA testing. This study provides a new approach for the design of spinel materials with high OER performances.
Keyword ：
DFT DFT Spinel Spinel Electronic structure Electronic structure Catalytic performance Catalytic performance
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| GB/T 7714 | Ni, Yijie , Wang, Zihao , Wang, Yue et al. Triggering efficient Ni active centres by tuning the localized Pr3+ sites in spinel electro catalysis [J]. | APPLIED SURFACE SCIENCE , 2025 , 699 . |
| MLA | Ni, Yijie et al. "Triggering efficient Ni active centres by tuning the localized Pr3+ sites in spinel electro catalysis" . | APPLIED SURFACE SCIENCE 699 (2025) . |
| APA | Ni, Yijie , Wang, Zihao , Wang, Yue , Xu, Lincheng , Yan, Yong , Li, Fan . Triggering efficient Ni active centres by tuning the localized Pr3+ sites in spinel electro catalysis . | APPLIED SURFACE SCIENCE , 2025 , 699 . |
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Abstract ：
The cathode material of aqueous zinc-ion batteries is a critical constraint on their further application due to the poor structure stability. Consequently, understanding their charge-discharge mechanisms and developing highperformance materials are key to promoting their use. This study investigates the effect of dopant atoms, particularly manganese (Mn), on the properties of vanadium bronze (MVO). Mn, with its larger ionic radius and higher d-electron count, enhanced the electrochemical properties of MVO: the specific capacity is up to 370 mAh/g @100 mA/g and has good rate performance, with a capacity of about 300 mAh/g at 1000 mA/g, a capacity retention rate of 92 % after 2000 cycles and showed the excellent capacity and stability. Mn was present in both the interlayers and within the vanadium bronze structure, promoting the self-adaptive and a more pronounced electron transfer with the metal-oxygen bonds in the structure. This enhanced the covalent character of the metal-oxygen bonds and improved the intrinsic conductivity. The results of in-situ Raman and SQUID measurements revealed changes in Mn-O bond lengths on molecular and atom level and the intrinsic nature of the "pillar effect". These findings provide new insights into ion-doping strategies for enhancing electrochemical performance in zinc-ion batteries.
Keyword ：
In-situ Raman In-situ Raman Vanadium bronze Vanadium bronze Spin effect Spin effect Structural stability Structural stability Self-adaptive Self-adaptive Zinc-ion storage Zinc-ion storage
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| GB/T 7714 | Wang, Yue , Zou, Haoran , Wang, Zihao et al. Spin Effect-Induced layer spacing Adaptation in vanadium bronze cathodes for Fast Zinc-Ion storage [J]. | APPLIED SURFACE SCIENCE , 2025 , 698 . |
| MLA | Wang, Yue et al. "Spin Effect-Induced layer spacing Adaptation in vanadium bronze cathodes for Fast Zinc-Ion storage" . | APPLIED SURFACE SCIENCE 698 (2025) . |
| APA | Wang, Yue , Zou, Haoran , Wang, Zihao , Xu, Lincheng , Yan, Yong , Feng, Yingjie et al. Spin Effect-Induced layer spacing Adaptation in vanadium bronze cathodes for Fast Zinc-Ion storage . | APPLIED SURFACE SCIENCE , 2025 , 698 . |
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Abstract ：
Aqueous zinc metal batteries (AZMBs) caught significant attention because of their simple manufacturing processes, low cost, and excellent safety profiles. However, the use of liquid electrolyte in AZMBs would lead to selfcorrosion, hydrogen evolution reaction caused by water decomposition and zinc dendrite growth. These would result in low Coulombic efficiency, poor cycling performance, and cell short-circuiting, limiting the development of AZMBs. Herein, a gel polymer electrolyte (GPE) was designed by introducing polymers of intrinsic microporosity (PIMs) and subjecting the polymer to amidoximation (AO-PIM-1) using bacterial cellulose (BC) as a support membrane to obtain the desired AO-PIM-1/BC GPE. The C=N in the amidoxime functional group in the GPE coordinates with Zn2+ to promote ion transport and uniform deposition of Zn. In addition, the hydrophilic groups, -NH2 and -OH, reduced the energy required for the desolvation of hydrated Zn2+ inducing in a wide electrochemical stability window (2.42 V). Therefore, the Zn//Zn cells that incorporate the AO-PIM-1/BC GPE exhibit a cycle life of up to similar to 1100h and a Coulombic efficiency of 99.97 %. Furthermore, Zn//alpha-MnO2 retains 85 % of its initial capacity after 400 charge/discharge cycles (0.5C) and realizes a dendrite-free Zn anode. This AOPIM-1/BC GPE provides an effective strategy for protecting the Zn anode in AZMBs.
Keyword ：
Electrochemical stability Electrochemical stability Amidoxime functional group Amidoxime functional group Aqueous zinc metal batteries (AZMBs) Aqueous zinc metal batteries (AZMBs) Dendrite-free Dendrite-free Gel polymer electrolyte (GPE) Gel polymer electrolyte (GPE)
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| GB/T 7714 | Wang, Zihao , Wang, Yue , Zou, Haoran et al. Dendrite-free zinc anode enable via amidoxime functional groups in gel polymer electrolytes for aqueous zinc metal batteries [J]. | CHEMICAL ENGINEERING JOURNAL , 2024 , 497 . |
| MLA | Wang, Zihao et al. "Dendrite-free zinc anode enable via amidoxime functional groups in gel polymer electrolytes for aqueous zinc metal batteries" . | CHEMICAL ENGINEERING JOURNAL 497 (2024) . |
| APA | Wang, Zihao , Wang, Yue , Zou, Haoran , Ni, Yijie , Chen, Xin , Guo, Hongxia et al. Dendrite-free zinc anode enable via amidoxime functional groups in gel polymer electrolytes for aqueous zinc metal batteries . | CHEMICAL ENGINEERING JOURNAL , 2024 , 497 . |
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Abstract ：
Fe-N-C has a high number of FeNx active sites and has thus been regarded as a high-performance oxygen reduction reaction (ORR) catalyst, and combining Fe3C with Fe-N-C typically boosts ORR activity. However, the catalytic mechanism remains unknown, limiting further research and development. In this study, a precipitation-solvothermal process was used in conjunction with pyrolysis to produce a series of Fe-N-C catalysts derived from a zeolitic imidazolate framework (ZIF) that was composited with Fe3C. The prepared catalysts had a multiscale structure of ZIF-like carbon particles and rod-like structures, as well as bamboo-like carbon nanotubes (CNTs) and carbon layers wrapped with Fe3C particles while a series of studies revealed the origin of the rod-like structures and Fe3C phase. The hierarchical structure was beneficial to the enhanced electrocatalytic performance of catalysts for ORR. The optimal sample had the highest half-wave potential of 0.878 V vs. RHE, which was higher than that of commercial Pt/C (0.861 V vs. RHE). The ECSA of the optimal sample was 1.08 cm(2) mu g(-1), with an electron transfer number close to 4, and functioning kinetics. The optimal sample exhibited high durability and methanol tolerance for the ORR. Finally, blocking different Fe active sites with coordination ions demonstrated that Fe(ii) was the main active site, indicating that Fe3C primarily served as a cocatalyst to optimize the electron structure of Fe-N-C, thereby synergistically improving the ORR activity.
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| GB/T 7714 | Wang, Tanlun , Xu, Lincheng , Sun, Chenxiang et al. Synthesis of hierarchically structured Fe3C/CNTs composites in a FeNC matrix for use as efficient ORR electrocatalysts [J]. | RSC ADVANCES , 2023 , 13 (6) : 3835-3842 . |
| MLA | Wang, Tanlun et al. "Synthesis of hierarchically structured Fe3C/CNTs composites in a FeNC matrix for use as efficient ORR electrocatalysts" . | RSC ADVANCES 13 . 6 (2023) : 3835-3842 . |
| APA | Wang, Tanlun , Xu, Lincheng , Sun, Chenxiang , Li, Xiyuan , Yan, Yong , Li, Fan . Synthesis of hierarchically structured Fe3C/CNTs composites in a FeNC matrix for use as efficient ORR electrocatalysts . | RSC ADVANCES , 2023 , 13 (6) , 3835-3842 . |
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Abstract ：
针对化学、化学工程与技术专业硕士培养环节的课程群建设，本文结合纳米材料、环境、能源等方向的特点，从基础的物理化学研究方法到专业基础的固体结构分析和专业方向的纳米材料制备，打通适应学科发展的三门课程。在统一优化分析的基础上，笔者针对原课程设置的重复内容进行协调统一。笔者通过课程间的融合，整合优势教学资源，侧重问题导向的实际案例学习，结合线上线下教学，实现效益最大化，以此提高教学质量。这有效地提高了教师的教学效率和学生的自学能力以及创新能力。在课程教学实践中，笔者采用集中备课促进双语教学，以拓宽师生的国际化视野。笔者通过典型教案的集中剖析，以促进“课程思政”改革，帮助青年教师快速成长。
Keyword ：
课程思政 课程思政 课程群 课程群 物理化学 物理化学 国际化 国际化 纳米材料 纳米材料 研究方法 研究方法
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| GB/T 7714 | 严勇 , 安丽 , 李钒 . 研究生“物理化学研究方法在纳米材料领域中的应用”课程群建设探索 [J]. | 科学咨询(科技·管理) , 2023 , PageCount-页数: 3 (06) : 68-70 . |
| MLA | 严勇 et al. "研究生“物理化学研究方法在纳米材料领域中的应用”课程群建设探索" . | 科学咨询(科技·管理) PageCount-页数: 3 . 06 (2023) : 68-70 . |
| APA | 严勇 , 安丽 , 李钒 . 研究生“物理化学研究方法在纳米材料领域中的应用”课程群建设探索 . | 科学咨询(科技·管理) , 2023 , PageCount-页数: 3 (06) , 68-70 . |
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Abstract ：
针对化学、化学工程与技术专业硕士培养环节的课程群建设,本文结合纳米材料、环境、能源等方向的特点,从基础的物理化学研究方法到专业基础的固体结构分析和专业方向的纳米材料制备,打通适应学科发展的三门课程.在统一优化分析的基础上,笔者针对原课程设置的重复内容进行协调统一.笔者通过课程间的融合,整合优势教学资源,侧重问题导向的实际案例学习,结合线上线下教学,实现效益最大化,以此提高教学质量.这有效地提高了教师的教学效率和学生的自学能力以及创新能力.在课程教学实践中,笔者采用集中备课促进双语教学,以拓宽师生的国际化视野.笔者通过典型教案的集中剖析,以促进"课程思政"改革,帮助青年教师快速成长.
Keyword ：
研究方法 研究方法 课程思政 课程思政 物理化学 物理化学 课程群 课程群 纳米材料 纳米材料 国际化 国际化
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| GB/T 7714 | 严勇 , 安丽 , 李钒 . 研究生"物理化学研究方法在纳米材料领域中的应用"课程群建设探索 [J]. | 科学咨询 , 2023 , (11) : 68-70 . |
| MLA | 严勇 et al. "研究生"物理化学研究方法在纳米材料领域中的应用"课程群建设探索" . | 科学咨询 11 (2023) : 68-70 . |
| APA | 严勇 , 安丽 , 李钒 . 研究生"物理化学研究方法在纳米材料领域中的应用"课程群建设探索 . | 科学咨询 , 2023 , (11) , 68-70 . |
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Abstract ：
Polymers of intrinsic microporosity (PIMs) have been widely used in functional membranes in recent years because of the inefficient packing of molecules to form stable structural micropores. The gel polymer electrolyte (GPE) was fabricated with bacterial cellulose (BC) as support membrane and the partially amidated PIM-1 (named as PIM-CONH2) as functional layer, which was used as electrolyte membrane in lithium-metal batteries (LMBs). Due to the existence of amide groups, the formed PIM-CONH2/BC GPE exhibited a high Li+ transference number (0.76), good cycling performance (83% capacity retention after 200 cycles at 0.5C), and good rate recovery in a LiFePO4|GPE|Li battery. The layered porous structure in the PIM-CONH2/BC GPE could adjust the Li+ transport behavior, and the presence of an amide group promoted the uniform dissolution/ deposition of Li+. And the amidated PIMs in the GPE could play a significant role in improving the interfacial affinity and suppressing the growth of lithium dendrites. This work provides a new strategy for improving the safety and stability of LMBs in order to meet the demands for functionalized LMB electrolytes.
Keyword ：
Gel polymer electrolyte (GPE) Gel polymer electrolyte (GPE) Electrochemical performance Electrochemical performance Polymers of intrinsic microporosity (PIMs) Polymers of intrinsic microporosity (PIMs) Multilayered structure Multilayered structure
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| GB/T 7714 | Zou, Haoran , Wang, Yue , Li, Xiyuan et al. Multilayered amidated polymer of intrinsic microporosity for gel polymer electrolyte in lithium metal batteries [J]. | JOURNAL OF MEMBRANE SCIENCE , 2023 , 685 . |
| MLA | Zou, Haoran et al. "Multilayered amidated polymer of intrinsic microporosity for gel polymer electrolyte in lithium metal batteries" . | JOURNAL OF MEMBRANE SCIENCE 685 (2023) . |
| APA | Zou, Haoran , Wang, Yue , Li, Xiyuan , Ding, Peipei , Guo, Hongxia , Li, Fan . Multilayered amidated polymer of intrinsic microporosity for gel polymer electrolyte in lithium metal batteries . | JOURNAL OF MEMBRANE SCIENCE , 2023 , 685 . |
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Abstract ：
Transition metal oxide nanomaterials or nanocomposites containing transition metal oxides have the potential to replace traditional catalysts for electrochemical applications, photocatalysis, and energy storage. Amorphous manganese oxide catalysts were prepared via photochemical metal-organic deposition (PMOD). Through XRD, SEM-EDS, Raman spectroscopy, FTIR spectroscopy, HRTEM-EDS, and XPS, we confirmed that amorphous manganese oxide catalysts were successfully prepared. Amorphous catalysts prepared with different photolysis times were compared in terms of their performance for the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER), and catalyst MnOx-PMOD48 showed the best performance because of its high Mn3+ proportion and electrochemically active surface area. MnOx-PMOD48 showed better ORR/OER performance than the crystalline MnOx and MnOx/Ti4O7 catalysts from our previous work. Following our previous work on crystalline manganese oxide catalysts, we added Ti4O7 during the PMOD process with 48 h of treatment and obtained the amorphous catalyst MnOx/Ti4O7-PMOD. MnOx/Ti4O7-PMOD was supported by Ti4O7 particles, which led to improved stability. The ORR/OER catalytic activity of MnOx/Ti4O7-PMOD was better than that of crystalline catalyst MnOx/Ti4O7-300, which was the best crystalline catalyst in our previous work. We also compared lithium-oxygen batteries assembled with MnOx/Ti4O7-PMOD and MnOx/Ti4O7-300. The battery performance tests confirmed that the amorphous manganese catalyst had better ORR/OER bifunctional catalytic performance than the crystalline manganese catalyst because of its high defect state with more abundant edge active sites and more surface-exposed catalytic active sites.
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| GB/T 7714 | Bai, Fan , He, Yuxiu , Xu, Lincheng et al. Improved ORR/OER bifunctional catalytic performance of amorphous manganese oxides prepared by photochemical metal-organic deposition [J]. | RSC ADVANCES , 2022 , 12 (4) : 2408-2415 . |
| MLA | Bai, Fan et al. "Improved ORR/OER bifunctional catalytic performance of amorphous manganese oxides prepared by photochemical metal-organic deposition" . | RSC ADVANCES 12 . 4 (2022) : 2408-2415 . |
| APA | Bai, Fan , He, Yuxiu , Xu, Lincheng , Wang, Yue , Wang, Yan , Hao, Zhanzhong et al. Improved ORR/OER bifunctional catalytic performance of amorphous manganese oxides prepared by photochemical metal-organic deposition . | RSC ADVANCES , 2022 , 12 (4) , 2408-2415 . |
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Abstract ：
Developing novel oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) catalysts is vital for water splitting. Here, carbon black (CB) and nickel carbonyl powder (NCP) are used as components, and the nonionic surfactant polyvinyl pyrrolidone (PVP) is used as a shape-controlled capping agent to easily prepare layered double (Ni, Fe) hydroxide (NiFe-LDH) electrodes. Scanning electron microscopy observation and X-ray photoelectron spectra analysis show that the Fe2+ -doped layered double hydroxide is grown in situ on nickel foam (NF). CB (XC-72) and NCP further improve the electrical conductivity. At 10 mA.cm(-2), the overpotentials of the OER and HER are 203 mV and 83 mV, respectively, in 1 M KOH. Only 1.48 V is needed when both electrodes are applied for water splitting, and it has a stability of more than 100 h. This work can be used as a medium to elevate the OER and HER performance of NiFe-LDH-based catalysts. (C) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
Keyword ：
Self-repairing Self-repairing Hydrogen evolution reaction Hydrogen evolution reaction NiFe-LDH NiFe-LDH Water splitting Water splitting Oxygen evolution reaction Oxygen evolution reaction
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| GB/T 7714 | Sun, Chenxiang , Wang, Tanlun , Sun, Chunwen et al. Layered double (Ni, Fe) hydroxide grown on nickel foam and modified by nickel carbonyl powder and carbon black as an efficient electrode for water splitting [J]. | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2022 , 47 (45) : 19609-19618 . |
| MLA | Sun, Chenxiang et al. "Layered double (Ni, Fe) hydroxide grown on nickel foam and modified by nickel carbonyl powder and carbon black as an efficient electrode for water splitting" . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 47 . 45 (2022) : 19609-19618 . |
| APA | Sun, Chenxiang , Wang, Tanlun , Sun, Chunwen , Li, Fan . Layered double (Ni, Fe) hydroxide grown on nickel foam and modified by nickel carbonyl powder and carbon black as an efficient electrode for water splitting . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2022 , 47 (45) , 19609-19618 . |
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Abstract ：
Metal-N-C-based catalysts prepared by pyrolysis are frequently used in the oxygen reduction reaction (ORR). Zeolitic imidazolate frameworks (ZIFs), a type of metal organic framework (MOF), are selected as precursors due to their special structure and proper pore sizes. A series of Fe-N-C catalysts with different concentrations of 2-methylimidazole were prepared with a simple solvothermal-pyrolysis method, and the transformation productivity, morphology and ORR activity were investigated. It was found that the Fe-N-C catalyst with a 2-methylimidazole concentration of 0.53 mol L-1 had the best performance. In 0.1 M KOH solution, the half-wave potential was 0.852 V (vs. RHE), with the highest electrochemically active surface area (ECSA) of 94.1 cm(2), and the ORR reaction was dominated by a 4-electron process. The current only decreased by 10.5% after 50 000 s of chronoamperometry (CA), while the half-wave potential only decreased 20 mV in 3 M methanol. Additionally, this catalyst cannot be poisoned by Cl- and SO32- ions in the ORR process. Finally, some typical ions including SCN-, Fe(CN)(6)(3-) and Fe(CN)(6)(4-) were used to inhibit the active sites, and it was determined that Fe(ii) is the real active species. The series of synthesis and testing experiments has significance in guiding optimization of the synthesis conditions and analysis of the mechanism of active sites in Fe-N-C materials.
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| GB/T 7714 | Wang, Tanlun , Sun, Chenxiang , Yan, Yong et al. Understanding the active sites of Fe-N-C materials and their properties in the ORR catalysis system [J]. | RSC ADVANCES , 2022 , 12 (16) : 9543-9549 . |
| MLA | Wang, Tanlun et al. "Understanding the active sites of Fe-N-C materials and their properties in the ORR catalysis system" . | RSC ADVANCES 12 . 16 (2022) : 9543-9549 . |
| APA | Wang, Tanlun , Sun, Chenxiang , Yan, Yong , Li, Fan . Understanding the active sites of Fe-N-C materials and their properties in the ORR catalysis system . | RSC ADVANCES , 2022 , 12 (16) , 9543-9549 . |
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