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学者姓名：林荣英
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Abstract ：
Lithium ion batteries play an important role in various energy storage technologies due to their good safety performance. As an anode material, silicon has attracted attention for its higher theoretical capacity than commercial graphite. But large volume expansion and unstable solid electrolyte interface (SEI) during the cycling of silicon lead to rapid capacity decay, which limits the commercial application of silicon anode. In this article, Si/BiPO4 anode materials were prepared by solvothermal reaction. After morphology analysis and constant current charge discharge cycle analysis of Si/BiPO4 anode materials with different mass ratios, it was found that Si/BiPO4 anode materials with the mass ratio of 7:3 exhibited more excellent electrochemical performance. The conversion reaction of BiPO4 and Li generates Bi and Li3PO4, and the alloying reaction of Bi generates Li3Bi. Bi and Li3Bi reduce the internal resistance of the Si/BiPO4 composite, and Li3PO4 is distributed on the surface of Si material, participating in the formation of SEI film and improving the stability of the material. At a current density of 500 mA g−1, the first discharge specific capacity of the Si/BiPO4 anode is 2672.1 mA h g−1. After 200 cycles, the discharge specific capacity remains at 1308.9 mA h g−1. The electrochemical impedances of pure Si and Si/BiPO4 anode materials before and after cycling were analyzed. It was found that the resistance of the Si/BiPO4 anode before and after 100 cycles was lower than that of pure Si materials, which further proved that the addition of BiPO4 material helps to improve the charge transfer ability of pure silicon materials. © 2024 Elsevier Ltd and Techna Group S.r.l.
Keyword ：
Anode material Anode material BiPO4 nanoparticles BiPO4 nanoparticles Composite material Composite material Lithium-ion battery Lithium-ion battery
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| GB/T 7714 | Zhang, Y. , Deng, Q. , Lin, R. et al. Si/BiPO4 composite anode material for lithium ion batteries prepared by solvothermal method [J]. | Ceramics International , 2024 , 50 (14) : 25192-25201 . |
| MLA | Zhang, Y. et al. "Si/BiPO4 composite anode material for lithium ion batteries prepared by solvothermal method" . | Ceramics International 50 . 14 (2024) : 25192-25201 . |
| APA | Zhang, Y. , Deng, Q. , Lin, R. , Liu, H. . Si/BiPO4 composite anode material for lithium ion batteries prepared by solvothermal method . | Ceramics International , 2024 , 50 (14) , 25192-25201 . |
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Micron-sized Si-based materials have attracted extensive attention for lithium-ion batteries due to their high theoretical capacity and low cost. However, its large volume expansion and low conductivity limit its further development. Here, a Si/ZnS anode material is prepared, in which ZnS nanoparticles are uniformly attached to the surface of micro-Si particles. The conversion reaction of ZnS generates metal Zn and Li2S, and the alloying reaction of Zn generates LixZn, the metal Zn and LixZn are used as conductive additives to improve the conductivity of the composites, while Li2S is used as an artificial solid electrolyte interfacial phase to promote the stability of the solid electrolyte interface of the composites, so that the prepared micron-sized Si-based anode exhibits excellent cycling stability. At a current density of 0.5 A g-1, the initial coulombic efficiency reaches 78.67 % and the discharge specific capacity is 1540.2 mAh g-1 after 200 cycles.
Keyword ：
Anode material Anode material lithium-ion batteries lithium-ion batteries Micron-sized silicon particles Micron-sized silicon particles ZnS ZnS
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| GB/T 7714 | Zhang, Yong , Zhang, Yijin , Deng, Qingsong et al. Improving the performance of lithium-ion batteries by micron-sized silicon particles coated with nano-ZnS anode materials [J]. | JOURNAL OF ENERGY STORAGE , 2024 , 81 . |
| MLA | Zhang, Yong et al. "Improving the performance of lithium-ion batteries by micron-sized silicon particles coated with nano-ZnS anode materials" . | JOURNAL OF ENERGY STORAGE 81 (2024) . |
| APA | Zhang, Yong , Zhang, Yijin , Deng, Qingsong , Kuang, Ge , Lin, Rongying . Improving the performance of lithium-ion batteries by micron-sized silicon particles coated with nano-ZnS anode materials . | JOURNAL OF ENERGY STORAGE , 2024 , 81 . |
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In the field of lithium battery research, silicon has received extensive attention due to its high specific capacity and abundant reserves, but the factors such as large volume expansion and low electrical conductivity limit its further development. In this work, Si/Bi2S3 composites with a heterogeneous structure is obtained by using a hydrothermal reaction. The heterogeneous structure can promote the rapid transfer of charge, and the interfacial coupling effect of the heterogeneous structure has an adsorption effect on Li2S generated by the conversion reaction of Bi2S3, and Li2S is distributed on the surface of the Si/Bi2S3 composite to become an effective component of solid electrolyte interface (SEI), promoting the stability of the SEI film. The Bi and LixBi (x = 1, 3) produced during the conversion and alloying reactions of Bi2S3 can reduce the internal resistance of the Si/Bi2S3 composite. Thus, at a current density of 500 mA g-1, the initial charge -discharge specific capacity of Si/Bi2S3 is 2240.5/2767.8 mAh g-1. After 200 cycles, the discharge specific capacity can achieve 1443.3 mAh g-1, with a capacity retention of 52.1 %.
Keyword ：
Heterogeneous structure Heterogeneous structure Lithium-ion battery Lithium-ion battery Silicon anode Silicon anode
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| GB/T 7714 | Yang, Tao , Zhang, Yong , Zhang, Yijin et al. Improving the conductivity of silicon anode and the stability of solid electrolyte interface by Si/Bi2S3 nanocomposite [J]. | JOURNAL OF ENERGY STORAGE , 2024 , 84 . |
| MLA | Yang, Tao et al. "Improving the conductivity of silicon anode and the stability of solid electrolyte interface by Si/Bi2S3 nanocomposite" . | JOURNAL OF ENERGY STORAGE 84 (2024) . |
| APA | Yang, Tao , Zhang, Yong , Zhang, Yijin , Lin, Rongying . Improving the conductivity of silicon anode and the stability of solid electrolyte interface by Si/Bi2S3 nanocomposite . | JOURNAL OF ENERGY STORAGE , 2024 , 84 . |
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We introduced a Si/SnS2 anode material with a high energy density and excellent cycle stability. The structure of this Si/SnS2 composite material is nanosized SnS2 coated on the surface of nanosilicon. Using the structural advantages of the coating structure, combined with the lithium storage mechanism of tin disulfide, the performance of silicon materials has been improved from three aspects: alleviating the volume expansion effect, improving the stability of the solid electrolyte interface (SEI), and enhancing the electrical conductivity. The material exhibits very excellent performance when applied to lithium-ion battery anodes. At the current density of 0.5 Ag(-1), the specific discharge capacity of the electrode material is maintained at 2217 mAhg(-1) after 100 cycles, and the capacity retention rate reached 65.3%. It also has high Coulombic efficiency of 86.1% for the first cycle and 96-99.9% for the following cycles.
Keyword ：
Anode material Anode material Li2S Li2S Lithium-ionbattery Lithium-ionbattery Silicon Silicon SnS2 SnS2
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| GB/T 7714 | Yang, Tao , Zhu, Junchao , Zhang, Yijin et al. Si/SnS2 Nanocomposite for Lithium Ion Battery Anodes [J]. | ACS APPLIED NANO MATERIALS , 2023 , 6 (24) : 22767-22773 . |
| MLA | Yang, Tao et al. "Si/SnS2 Nanocomposite for Lithium Ion Battery Anodes" . | ACS APPLIED NANO MATERIALS 6 . 24 (2023) : 22767-22773 . |
| APA | Yang, Tao , Zhu, Junchao , Zhang, Yijin , Zhang, Yong , Lin, Rongying . Si/SnS2 Nanocomposite for Lithium Ion Battery Anodes . | ACS APPLIED NANO MATERIALS , 2023 , 6 (24) , 22767-22773 . |
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The Si material of the highest theoretical capacity (4200 mAh.g(-1)) cannot be commercially applied in real life owing to its vast volume expansion during the charge-discharge process and low electrical conductivity. Here, we introduce a Si@SnO2 material with a coating structure, in which SnO2 is coated on the surface of the silicon material. The coating structure can effectively alleviate the volume expansion stress of the silicon material. The Sn produced by the reaction of SnO2 with Li during the first cycle has good conductivity, thereby improving the electrochemical performance of the silicon material. The electrochemical performance of the material is excel-lent. At the current density of 0.2A.g(-1), the first coulombic efficiency of the battery reaches 84.1%, and the specific discharge capacity of the battery can be reached at 1926mAh.g(-1) after 200 cycles.
Keyword ：
Anode material Anode material Coat Coat Lithium -ion battery Lithium -ion battery Silicon Silicon SnO2 SnO2
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| GB/T 7714 | Zhu, Junchao , Wang, Hui , Lin, Rongying . Improving the electrochemical performance of silicon materials by SnO2 through structural design and conductivity [J]. | APPLIED SURFACE SCIENCE , 2022 , 581 . |
| MLA | Zhu, Junchao et al. "Improving the electrochemical performance of silicon materials by SnO2 through structural design and conductivity" . | APPLIED SURFACE SCIENCE 581 (2022) . |
| APA | Zhu, Junchao , Wang, Hui , Lin, Rongying . Improving the electrochemical performance of silicon materials by SnO2 through structural design and conductivity . | APPLIED SURFACE SCIENCE , 2022 , 581 . |
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Using a simple hydrothermal method, we developed a Si@SnS anode material with SnS nanoparticles uni-formly attached to the surface of silicon nanoparticles. Utilizing the first charge-discharge reaction mech-anism of SnS, combined with the artificial solid electrolyte interphase to improve the solid electrolyte interphase stability of silicon-based materials and the introduction of conductive additives to improve the conductive properties of silicon-based materials, the Si@SnS material exhibits very excellent perfor-mance when applied to lithium-ion battery anodes. At a current density of 0.5A.g-1,after two cycles, the overall resistance of the Si@SnS material battery is reduced by nearly 55% relative to the resistance of the pure silicon battery. As a half-cell anode material, the first coulombic efficiency of Si@SnS at a current density of 1A.g -1 reached 85%, and after 200 cycles, it provided a reversible capacity of 1790 mAh.g -1 and a capacity retention rate of 74.6%. (c) 2021 Elsevier Ltd. All rights reserved.
Keyword ：
Anode material Anode material Artificial SEI film Artificial SEI film Conductive additive Conductive additive Lithium-ion battery Lithium-ion battery SnS SnS
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| GB/T 7714 | Zhu, Junchao , Yang, Tao , Fu, Yunhan et al. SnS nanoparticles as an artificial solid electrolyte interphase and effective conductive additive in silicon anodes [J]. | ELECTROCHIMICA ACTA , 2021 , 399 . |
| MLA | Zhu, Junchao et al. "SnS nanoparticles as an artificial solid electrolyte interphase and effective conductive additive in silicon anodes" . | ELECTROCHIMICA ACTA 399 (2021) . |
| APA | Zhu, Junchao , Yang, Tao , Fu, Yunhan , Sheng, Bibo , Lin, Rongying . SnS nanoparticles as an artificial solid electrolyte interphase and effective conductive additive in silicon anodes . | ELECTROCHIMICA ACTA , 2021 , 399 . |
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The amorphous carbon was coated on the surface of the nano-silicon with citric acid by a simple mechanical stirring in water bath method and high temperature pyrolysis method, and then the carbon-coated silicon composite material(Si@C) was coated with polyvinyl alcohol by the secondary mechanical stirring and high temperature pyrolysis to obtain double carbon layer-coated silicon composite material (Si@C@C). The microstructure and surface morphology of Si@C@C were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The electrochemical properties of Si@C@C were investigated by constant current charge-discharge, cyclic voltammetry, and electrochemical impedance spectra techniques. The study found that the first reversible specific capacity of Si@C@C was 1669 mAh/g at the current density of 0.1 C. The specific capacity remained at 1300 mAh/g, while the capacity retention rate was 77.9% after 200 cycles. The cyclic stability of Si@C@C was higher than that of Si@C, which greatly improved the electrochemical performance of silicon-based materials as anode materials for lithium ion batteries.
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| GB/T 7714 | Man, Yi , Lin, Rong-ying . Well-dispersed double carbon layers coated on Si nanoparticles and the enhanced electrochemical performance for lithium ion batteries [J]. | JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS , 2020 , 31 (17) : 14912-14920 . |
| MLA | Man, Yi et al. "Well-dispersed double carbon layers coated on Si nanoparticles and the enhanced electrochemical performance for lithium ion batteries" . | JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS 31 . 17 (2020) : 14912-14920 . |
| APA | Man, Yi , Lin, Rong-ying . Well-dispersed double carbon layers coated on Si nanoparticles and the enhanced electrochemical performance for lithium ion batteries . | JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS , 2020 , 31 (17) , 14912-14920 . |
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选取龙岩(LY)和上京(SJ)两种福建低灰熔点煤,利用灰熔点测定仪研究氧化铝、氧化钙及铝钙复合物对两种煤灰熔融温度的影响规律.研究结果表明:加入Al2O3(4％～18％,质量分数,下同)可以一直提高灰熔点,加入CaO(2％～8％)使灰熔点降低.但LY灰、SJ灰中添加较多Al2O3后再加少量CaO可使灰熔点比对应只加Al2 O3的高,表现出铝钙协同作用.通过XRD和SEM-EDX分析煤灰在高温下的矿物转化行为、表面微观形貌及化学组成,研究铝钙协同作用对低灰熔点煤的影响规律及其机理.结果发现:加入氧化铝后,煤灰在高温下生成的耐熔矿物莫来石是提高灰熔点的主要因素;加入较高含量的氧化铝和少量的氧化钙后,灰中先生成莫来石矿物,其中的氧化钙则会生成钙长石;在有莫来石存在时,钙长石与莫来石一起导致其熔融温度升高,从而提高灰熔点.
Keyword ：
协同作用 协同作用 灰熔融温度 灰熔融温度 煤灰 煤灰 铝钙复合物 铝钙复合物
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| GB/T 7714 | 林荣英 , 林晨昊 , 周家华 et al. 铝钙复合物对福建低灰熔点煤灰的影响 [J]. | 福州大学学报（自然科学版） , 2020 , 48 (1) : 116-121 . |
| MLA | 林荣英 et al. "铝钙复合物对福建低灰熔点煤灰的影响" . | 福州大学学报（自然科学版） 48 . 1 (2020) : 116-121 . |
| APA | 林荣英 , 林晨昊 , 周家华 , 张柏茂 . 铝钙复合物对福建低灰熔点煤灰的影响 . | 福州大学学报（自然科学版） , 2020 , 48 (1) , 116-121 . |
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采用简单的机械球磨法和高温热解法将热解碳包覆在纳米硅表面,再通过二次球磨制备出碳包硅/石墨复合材料.采用X射线衍射(XRD)、扫描电镜(SEM)对复合材料的微观结构和表面形貌进行表征,并将该复合材料制成扣式电池,对其进行恒流充放电循环性能测试和交流阻抗测试.研究发现,碳包硅/石墨复合材料首次可逆比容量为1026mAh/g,经过50次循环后,比容量仍然保持在875.4mAh/g,容量保持率为82.27％.循环稳定性远高于单一的碳包硅材料,极大地提高了硅基材料作为锂离子电池负极材料的电化学性能.
Keyword ：
循环稳定性 循环稳定性 机械球磨法 机械球磨法 锂离子电池 锂离子电池 锂离子电池碳包硅/石墨复合材料 锂离子电池碳包硅/石墨复合材料
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| GB/T 7714 | 李媛媛 , 满意 , 林荣英 et al. 锂离子电池碳包硅/石墨复合材料的制备及其电化学性能研究 [J]. | 化工新型材料 , 2020 , 48 (6) : 72-76 . |
| MLA | 李媛媛 et al. "锂离子电池碳包硅/石墨复合材料的制备及其电化学性能研究" . | 化工新型材料 48 . 6 (2020) : 72-76 . |
| APA | 李媛媛 , 满意 , 林荣英 , 洪若瑜 . 锂离子电池碳包硅/石墨复合材料的制备及其电化学性能研究 . | 化工新型材料 , 2020 , 48 (6) , 72-76 . |
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In order to make better use of the low ash fusion temperature semi-coke, increasing the coal's ash fusion temperature is the key to improving the coal gasification process. In this paper, through comparing with the effect of alumina and calcium oxide alone on ash fusion temperature of semi-coke, the synergistic effect of alumina and calcium oxide on the coal ash was studied. The effects of refractory agent A (rich in alumina) and B (rich in both alumina and calcium oxide) on the ash fusion temperature were also studied. The minerals evolutions during the ash melting process before and after A, B refractory agents were added were studied by X-ray diffractometer (XRD) and ternary phase diagram of FactSage. The results showed that adding a high amount of Al2O3 and a small amount of CaO to ash had a synergistic effect on increasing the ash fusion temperature. The formation of both mullite and anorthite had the synergy effect on increasing the ash fusion temperature. This was consistent with FactSage results.
Keyword ：
alumina alumina Ash fusion temperature Ash fusion temperature calcium oxide calcium oxide semi coke semi coke synergistic effect synergistic effect
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| GB/T 7714 | Lin, Rongying , Lin, Chenhao , Li, Yuanyuan et al. Study on the synergistic effect of calcium and aluminum on improving ash fusion temperature of semi-coke [J]. | INTERNATIONAL JOURNAL OF COAL PREPARATION AND UTILIZATION , 2019 . |
| MLA | Lin, Rongying et al. "Study on the synergistic effect of calcium and aluminum on improving ash fusion temperature of semi-coke" . | INTERNATIONAL JOURNAL OF COAL PREPARATION AND UTILIZATION (2019) . |
| APA | Lin, Rongying , Lin, Chenhao , Li, Yuanyuan , Lin, Bo . Study on the synergistic effect of calcium and aluminum on improving ash fusion temperature of semi-coke . | INTERNATIONAL JOURNAL OF COAL PREPARATION AND UTILIZATION , 2019 . |
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