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学者姓名：甘丽珍
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Abstract ：
The solid oxide electrolyzer with perovskite as the cathode can electrolyze CO2 to produce a valuable chemical resource, revealing the great potential of direct electrolysis of CO2 at high temperatures. However, its insufficient electrocatalytic activity limits the performance of a solid oxide electrolysis cell. In the present work, we successfully anchored metal nanoparticles, such as nickel and copper, on the perovskite cathode surface to form a composite cathode, thereby creating an active electrochemical interface for CO2 cleavage to improve the electrocatalytic activity for CO2 electrolysis and Faraday efficiency improvement. The perovskite cathode based on metal nanoparticles can increase the conductivity of the composite cathode compared to an undoped perovskite cathode, and it can be considered that the improved CO2 electrolytic performance is attributed to the synergistic effect of the metal nanocatalysts with the La0.8Sr0.2CrO3-delta ceramic electrodes. The electrochemical properties remained stable after 100 h of high-temperature testing, suggesting that the construction of metal-oxide active interfaces can improve the electrocatalytic performance and durability of the materials.
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| GB/T 7714 | Lin, Jinlong , Hong, Xinyi , He, Xuewei et al. In Situ Exsolution of Metal Nanoparticles from a Perovskite Cathode To Promote CO2 Electrolysis [J]. | ENERGY & FUELS , 2025 , 39 (8) : 4038-4046 . |
| MLA | Lin, Jinlong et al. "In Situ Exsolution of Metal Nanoparticles from a Perovskite Cathode To Promote CO2 Electrolysis" . | ENERGY & FUELS 39 . 8 (2025) : 4038-4046 . |
| APA | Lin, Jinlong , Hong, Xinyi , He, Xuewei , Gan, Lizhen . In Situ Exsolution of Metal Nanoparticles from a Perovskite Cathode To Promote CO2 Electrolysis . | ENERGY & FUELS , 2025 , 39 (8) , 4038-4046 . |
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Abstract ：
The solid oxide electrolysis cell (SOEC) is a highly efficient energy conversion device for CO2 reduction reactions and yields valuable energy gases CO and H-2, which can alleviate energy supply constraints. The prevalent metal cathodes for CO2 electrolysis are susceptible to oxidation and unstable performance, which greatly affects the catalytic activity as well as the efficiency. In this comprehensive research endeavor, we synthesize a series of Bsite elementally overdoped perovskite La0.6Sr0.4CrCuxO3-delta(x = 0-0.1), and during the reaction process the in situconstructed metal oxide active interfaces provide additional active sites for carbon dioxide electrolysis and enhance the catalytic activity of perovskite cathodes. The La0.6Sr0.4CrCu0.05O3-delta composition exhibited unparalleled electrochemical catalysis under the experimental setup of an applied voltage of 1.6 V and an operating temperature of 850 degrees C, achieving a remarkable carbon monoxide yield of 5.01 mL min(-1) cm(-2). Moreover, when the test lasts for 100 h, there are no recession or degradation in current or performance, and the electrode structure remains stable, and the electrochemical performance of the material is relatively stable, which indicates that the material is a high-quality catalyst in CO2 electrolysis. The results of this study can provide an experimental basis for environmental protection and energy conservation, and a new direction for energy conversion as well as constructing perovskite electrodes.
Keyword ：
CO2 electrolysis CO2 electrolysis In situ exsolution In situ exsolution Metal-oxide interfaces Metal-oxide interfaces SOEC SOEC
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| GB/T 7714 | Hong, Xinyi , Lin, Jinlong , He, Xuewei et al. In situ exsolution of metal particles to construct metal-oxide interfaces for efficient CO2 electrolysis [J]. | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2025 , 128 : 68-75 . |
| MLA | Hong, Xinyi et al. "In situ exsolution of metal particles to construct metal-oxide interfaces for efficient CO2 electrolysis" . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 128 (2025) : 68-75 . |
| APA | Hong, Xinyi , Lin, Jinlong , He, Xuewei , Gan, Lizhen . In situ exsolution of metal particles to construct metal-oxide interfaces for efficient CO2 electrolysis . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2025 , 128 , 68-75 . |
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Ethylene is a core foundational raw material for modern chemical industry. Herein, we present a novel pathway of electrochemical oxidative dehydrogenation to generate ethylene in conjunction with CO2 reduction based on a solid oxide electrolysis cell. Utilizing a Mn and Cu dual-doped strategy, we in situ exsolve Cu nanoparticles to form metal-oxide interfaces while we dope Mn to promote the formation of oxygen vacancies in titanate electrode. The active interface that functions as the triple-phase boundary provides abundant active sites for hosting electrochemical reactions. We show the outstanding performance of an ethane conversion of 37.68 % and an ethylene selectivity of 88.81 %, and we further present the durable performance in a continuous operation for 100 h.
Keyword ：
Dehydrogenation Dehydrogenation Ethan Ethan Ethylene Ethylene Interface Interface Solid oxide electrolysis cell Solid oxide electrolysis cell
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| GB/T 7714 | He, Xuewei , Sun, Hui , Huang, Xu et al. Electrochemical oxidative dehydrogenation of ethane to ethylene in solid oxide electrolysis cells based on dual-doped perovskite electrode [J]. | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2025 , 186 . |
| MLA | He, Xuewei et al. "Electrochemical oxidative dehydrogenation of ethane to ethylene in solid oxide electrolysis cells based on dual-doped perovskite electrode" . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 186 (2025) . |
| APA | He, Xuewei , Sun, Hui , Huang, Xu , Gan, Lizhen . Electrochemical oxidative dehydrogenation of ethane to ethylene in solid oxide electrolysis cells based on dual-doped perovskite electrode . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2025 , 186 . |
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Abstract ：
The solid oxide electrolysis cell (SOEC) is generally recognized as the optimal electrochemical conversion device for CO2 reduction reaction due to its high efficiency. However, the development of SOECs is limited by the lack of cathode materials with high electrocatalytic activity and stability. Perovskite cathodes exhibit redox stability at high temperatures, but their electrocatalytic activity remains limited. In this study, both A-site defects and B-site doping are designed for the perovskite La0.5Sr0.5TiO3-delta. This cathode material promotes B-site exsolution through A-site defects, resulting in high-density nanoparticles. The in situ exsolved nanoparticles and the oxide substrate form a metal-oxide interfacial structure that significantly enhances the electrocatalytic activity and stability of the SOEC cathodes. The La(0.4)5Sr(0.45)Ti(0.9)Mn(0.1)Fe(0.1)O(3)-delta cathode exhibits exceptional electroreduction performance under the operating conditions of 850 degrees C, producing a CO yield of 5.3 mL min(-1) cm(-2) with a current efficiency of 97.1%. Even after 100 h of operation, the SOEC maintains excellent durability. This work provides new ideas for improving surface and interface engineering.
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| GB/T 7714 | He, Xuewei , Huang, Xu , Sun, Hui et al. Enhanced CO2 electrolysis with in situ exsolved nanoparticles in the perovskite cathode [J]. | NEW JOURNAL OF CHEMISTRY , 2024 , 48 (13) : 5834-5839 . |
| MLA | He, Xuewei et al. "Enhanced CO2 electrolysis with in situ exsolved nanoparticles in the perovskite cathode" . | NEW JOURNAL OF CHEMISTRY 48 . 13 (2024) : 5834-5839 . |
| APA | He, Xuewei , Huang, Xu , Sun, Hui , Gan, Lizhen . Enhanced CO2 electrolysis with in situ exsolved nanoparticles in the perovskite cathode . | NEW JOURNAL OF CHEMISTRY , 2024 , 48 (13) , 5834-5839 . |
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Solid oxide electrolytic cells (SOECs) are a sustainable solution for carbon-neutral applications due to their property of simultaneously removing excess carbon dioxide from the air and producing valuable chemicals. However, the unsatisfactory cathodic catalytic activity has been hindering the popularization of this technology. In this work, we anchored FeCu alloy nanoparticles on the surface of perovskite cathode (La0.7Sr0.3Cr0.5Mn0.5(FeCu)(x)O3-delta, LSCM(FC)(x), x = 0, 0.025, 0.05, 0.075, and 0.1) by overdoping Fe and Cu at the B-site and reduction pretreatment to establish a stable metal-oxide active interface, which promoted the CO2 adsorption and decomposition, thus achieving the optimization of catalytic performance and carbon deposition resistance. The LSCM(FC)(0.075) prepared in the study exhibited higher catalytic activity (CO productivity up to 4.41 mL min(-1) cm(-2) and 98.1% Faradaic current efficiency at 1.6 V and 850 degrees C), in contrast to its CO yield which was 2.6 times that of the untreated LSCM. Furthermore, the current was maintained stably during up to 100 h of testing, and the LSCM(FC)(0.075)-SDC electrode structure was not altered with no obvious degradation in performance. This new design of the SOEC cathode material will therefore have great potential for development.
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| GB/T 7714 | Sun, Hui , He, Xuewei , Huang, Xu et al. Modification of LSCM Structure by Anchoring Alloy Nanoparticles for Efficient CO2 Electrolysis [J]. | ENERGY & FUELS , 2024 , 38 (4) : 3436-3444 . |
| MLA | Sun, Hui et al. "Modification of LSCM Structure by Anchoring Alloy Nanoparticles for Efficient CO2 Electrolysis" . | ENERGY & FUELS 38 . 4 (2024) : 3436-3444 . |
| APA | Sun, Hui , He, Xuewei , Huang, Xu , Gan, Lizhen . Modification of LSCM Structure by Anchoring Alloy Nanoparticles for Efficient CO2 Electrolysis . | ENERGY & FUELS , 2024 , 38 (4) , 3436-3444 . |
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Global CO2 concentrations were reported to exceed 419.3 ppm in 2023, a 51% increase from pre-industrial levels, and emissions will reach 37.4 billion tons. The concomitant rise in global temperature resulting from the increase in atmospheric CO2 concentration is precipitating a series of unprecedented challenges to global ecosystems. The development of innovative technologies mitigating the effects of climate change is of paramount importance. The solid oxide electrolytic cell (SOEC) represents a promising avenue for future CO2 resource utilization within the context of electrocatalytic conversion technology. We have employed the exceptional electronic conductivity and redox stability of the La0.7Sr0.3CrO3-delta substrate to enhance the efficacy of the electrolysis process. A series of La0.7Sr0.3CrFeXO3-delta (LSCFX, X = 0, 0.025, 0.05, 0.075, 0.1) were prepared by fine-tuning the iron doping at the B-site via glycine liquid phase combustion. The LSCF0.075 samples exhibited promising results in CO2 electrolysis, with a CO yield of 5.25 mL min-1 cm-2 and a current efficiency of 98.12%. This represents a 4.25-fold improvement over the undoped LSC. It is noteworthy that LSCF0.075 demonstrated exceptional catalytic stability after 50 hours of continuous operation at a high temperature. The industrialization of high-temperature CO2 electrolysis technology hinges on the development of efficient and stable electrode materials. This study offers promising insights in this regard.
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| GB/T 7714 | He, Shiwen , He, Xuewei , Gan, Lizhen . In situ exsolved Fe nanoparticles enhance the catalytic performance of perovskite cathode materials in solid oxide electrolytic cells [J]. | NEW JOURNAL OF CHEMISTRY , 2024 , 48 (44) : 18739-18745 . |
| MLA | He, Shiwen et al. "In situ exsolved Fe nanoparticles enhance the catalytic performance of perovskite cathode materials in solid oxide electrolytic cells" . | NEW JOURNAL OF CHEMISTRY 48 . 44 (2024) : 18739-18745 . |
| APA | He, Shiwen , He, Xuewei , Gan, Lizhen . In situ exsolved Fe nanoparticles enhance the catalytic performance of perovskite cathode materials in solid oxide electrolytic cells . | NEW JOURNAL OF CHEMISTRY , 2024 , 48 (44) , 18739-18745 . |
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The shale gas revolution bolsters ethane supply, thereby enhancing the economic viability of ethylene production from ethane. Presently, catalytic ethane dehydrogenation technology exhibits immense potential in the realm of ethylene production. This study achieves the electrochemical oxidative dehydrogenation conversion of ethane to ethylene via a solid oxide electrolysis cell (SOEC), effectively circumventing the issue of excessive oxidation during the ethane oxidative dehydrogenation process. An active electrode with an in situ grown metal-oxide interface significantly promotes the activation of the ethane C -H bond, leading to efficient ethylene production. Under the co-electrolysis mode of ethane with CO 2 , the Co@CeO 2 electrode demonstrates exceptional performance, achieving an ethane conversion rate of 33.1% and an ethylene selectivity of 88.9% at an applied voltage of 1.0 V. Moreover, the metal-oxide interface constructed via an in situ exsolved method effectively prevents the agglomeration of nanoparticles at high temperatures, thus enhancing the catalyst 's resistance to coking and stability. Notably, the electrode 's performance does not exhibit significant degradation even after 100 h of electrochemical reaction.
Keyword ：
Electrochemical oxidative dehydrogenation Electrochemical oxidative dehydrogenation Ethane Ethane Metal-oxide interface Metal-oxide interface SOEC SOEC
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| GB/T 7714 | He, Xuewei , Huang, Xu , Sun, Hui et al. Electrochemical oxidative dehydrogenation of ethane to ethylene in a solid oxide electrolysis cell with in situ grown metal-oxide interface active electrodes [J]. | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2024 , 79 : 1030-1036 . |
| MLA | He, Xuewei et al. "Electrochemical oxidative dehydrogenation of ethane to ethylene in a solid oxide electrolysis cell with in situ grown metal-oxide interface active electrodes" . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 79 (2024) : 1030-1036 . |
| APA | He, Xuewei , Huang, Xu , Sun, Hui , Gan, Lizhen . Electrochemical oxidative dehydrogenation of ethane to ethylene in a solid oxide electrolysis cell with in situ grown metal-oxide interface active electrodes . | INTERNATIONAL JOURNAL OF HYDROGEN ENERGY , 2024 , 79 , 1030-1036 . |
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Solid oxide electrolytic cells (SOECs) are widely used in energy conversion and storage technology. However, the traditional cermet material as the cathode is easily oxidized, which greatly reduces the electrolytic performance and efficiency. In this research work, we produce a range of A-site saturated B-site overdoped La0.7Sr0.3Cr0.5Mn0.5(FeCo)(x)O3-delta(LSCM(FeCo)(x)) samples through liquid-phase synthesis. Through the reduction pretreatment of the LSCM(FeCo)(x) sample, FeCo alloys are separated from the substrate in the form of alloy nanoparticles and anchored to the substrate to construct the metal-oxide interface and increase the active site. Compared to metal nanoparticles, the size effect of alloy nanoparticles can effectively improve the thermal stability and oxidation resistance of materials and enhance their high-temperature durability. Simultaneously, the three-phase interface consisting of the electrode, the electrolyte, and the gas is increased. The coupling of the metal-oxide interface and the three-phase interface enhances the catalytic activity. At 1.6 V and 850 degrees C, the electrode LSCM(FeCo)(0.075) resulted in a Faraday current efficiency close to 100% and a yield of 5.03 ml min(-1) cm(-2) of CO, about 2.5 times as much as conventional LSCM electrodes. After 100 h of high-temperature testing, the electrochemical performance is stable, which indicates that the construction of the metal-oxide active interfaces and three-phase interfaces could improve the electrocatalytic performance and durability of the material. This research result can provide a reference for the design of efficient and stable catalysts for high-temperature energy and environmental devices.
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| GB/T 7714 | Huang, Xu , Sun, Hui , He, Xuewei et al. Construction of a metal-oxide interface through alloy nanoparticles to enhance CO2 electrolysis [J]. | NEW JOURNAL OF CHEMISTRY , 2023 , 48 (5) : 2140-2145 . |
| MLA | Huang, Xu et al. "Construction of a metal-oxide interface through alloy nanoparticles to enhance CO2 electrolysis" . | NEW JOURNAL OF CHEMISTRY 48 . 5 (2023) : 2140-2145 . |
| APA | Huang, Xu , Sun, Hui , He, Xuewei , Ruan, Yunkai , Gan, Lizhen . Construction of a metal-oxide interface through alloy nanoparticles to enhance CO2 electrolysis . | NEW JOURNAL OF CHEMISTRY , 2023 , 48 (5) , 2140-2145 . |
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随着国民经济发展以及国家危险废物管理的规范化，我国危险废物产生量持续增长。在国家政策和市场需求的引导下，大量危险废物处置企业建成投运。本文在前人危险废物处置中心选址问题研究的基础上，调研了5家危险废物处置企业的选址情况，分析总结了后建危险废物处置中心选址的影响因素。
Keyword ：
危险废物 危险废物 后建处置中心 后建处置中心 影响因素 影响因素 选址 选址
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| GB/T 7714 | 何文斌 , 甘丽珍 . 后建危险废物处置中心选址影响因素探讨 [J]. | 深圳青年 , 2023 , (3) : 249-251 . |
| MLA | 何文斌 et al. "后建危险废物处置中心选址影响因素探讨" . | 深圳青年 3 (2023) : 249-251 . |
| APA | 何文斌 , 甘丽珍 . 后建危险废物处置中心选址影响因素探讨 . | 深圳青年 , 2023 , (3) , 249-251 . |
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本发明公开了一种基于LSCF阳极的固体氧化物电池和次增强电化学氧化甲烷偶联制乙烯和乙烷的方法。所述LSCF阳极材料为铁元素脱溶析出于La0.75Sr0.25Cr0.5Fe0.5+xO3‑δ基底上，构建了金属‑氧化物界面。甲烷氧化偶联是在氧化物电池阴极和阳极之间施加1.0‑1.4 V的稳定电压，温度为800~850℃下进行的，甲烷气体直接在阳极端接触反应，产生一定质量的乙烯和乙烷。本发明制备的基于La0.75Sr0.25Cr0.5Fe0.5+xO3‑δ阳极材料具有极高的电化学反应性能和抗积碳能力，对乙烯和乙烷材料的制备和可再生电能的储存具有积极的意义。
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| GB/T 7714 | 甘丽珍 , 张优凯 . 基于LSCF阳极的固体氧化物电池及其制备方法和在甲烷氧化偶联制乙烯和乙烷中的应用 : CN202210376741.4[P]. | 2022-04-12 . |
| MLA | 甘丽珍 et al. "基于LSCF阳极的固体氧化物电池及其制备方法和在甲烷氧化偶联制乙烯和乙烷中的应用" : CN202210376741.4. | 2022-04-12 . |
| APA | 甘丽珍 , 张优凯 . 基于LSCF阳极的固体氧化物电池及其制备方法和在甲烷氧化偶联制乙烯和乙烷中的应用 : CN202210376741.4. | 2022-04-12 . |
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