Journal of Energy Storage
·
2025
·
IF 9.8
C. Liu,H.P. Zhou,H. Zhou,B. Yang,Z.K. Li,S. Zhang,T.T. Feng,Z.Q. Xu,Z.X. Fang,M.Q. Wu
The chemical vapor deposition (CVD) based Si C composite anode materials attract worldwide attention due to their potential to solve the notorious problems of volume expansion and electrode instability of Si-based anode materials. Herein, a high-strength, high-flexibility, and high-conductivity carbon skeleton composed of graphene and carbon nanotubes (CNTs) was constructed via spray-drying to load Si using the CVD process . The unique electrical, mechanical, and porous properties of the composite carbon skeleton jointly contribute to the excellent electrochemical performance of the composite anode. Even without the carbon coating, this composite possesses a high capacity of 1154 mAh g −1 and a capacity retention of 98.7 % after 150 cycles at 0.5 A g −1 . Plasma-enhanced chemical vapor deposition (PECVD) was used to deposit an ultrathin onion-like carbon layer on the composite, further enhancing its cyclic stability (802 mAh g −1 @1 A g −1 with a capacity retention of 90.7 % after 500 cycles). The composite anode's significant potential was further confirmed in a full cell paired with a commercial NCM811 cathode, achieving a high energy density of 430 Wh kg −1 and an outstanding capacity retention of 72.0 % after 150 cycles at 1C.
研究领域:
材料科学
·
电化学
·
纳米材料
·
能源存储
·
复合材料
·
电池技术
✓ 已验证
DOI
高影响因子
Journal of Energy Chemistry
·
2025
·
IF 14.9
Yinxuan Liang,Guohuang Kang,Yanru Liu,Jinhui Zhang,Yao Lv,Kangning Cai,Yilei Zhang,Feiyu Kang,Yidan Cao
Lithium-rich manganese-based cathode materials, as promising candidates for next-generation high-energy-density lithium-ion batteries due to their high specific capacity (>250 mAh g −1 ) and cost-effectiveness, are limited by severe capacity decay and voltage fade driven by irreversible structural transitions and oxygen release during cycling. Here, we report a Ti/Si dual-element modification strategy for cobalt-free Li 1.2 Ni 0.2 Mn 0.6 O 2 (LNMO) cathodes. The Ti/Si co-modified TS-LNMO cathode demonstrates superior structural stability and electrochemical performance. Bulk Ti 4+ doping stabilizes the oxygen framework via robust Ti–O bonds and enhances the lattice oxygen redox reversibility, while an in situ formed Li 2 SiO 3 layer suppresses interfacial side reactions, enhances lithium-ion diffusion, and prevents HF-induced erosion. As a result, the TS-LNMO cathode achieves 90% capacity retention after 200 cycles at 0.5 C and maintains ∼80% capacity in full cells cycled to 4.8 V. Additionally, the TS-LNMO cathode exhibits impressive rate performance even at a high rate of 5 C. This work offers an effective strategy for advancing cobalt-free, high-performance lithium-rich cathodes for sustainable energy applications.
研究领域:
材料科学
·
电化学
·
储能技术
·
锂离子电池
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materiomics
·
2024
·
IF 8.4
Weibin Chen,Yuzhen Wang,Gaochao Liu,Yongsheng Sun,Zhiguo Xia
Laser phosphor display technology plays an important role in advanced display projection; however, it is a challenge in maintaining excellent color accuracy under high brightness due to the lack of red spectrum. Here, red-emitting Mg 2 Al 4 Si 5 O 18 :Eu 2+ ceramics as the phosphor wheel have been optimized in chemical compositions and texture orientation. The textured Mg 2 Al 4 Si 5 O 18 :Eu 2+ ceramics have high transparency and spot limiting ability, accordingly, the ceramic wheel outputs 1184 l m of ultra-bright red light under 50W·mm −2 laser power density. Moreover, the red spectral utilization (＞600 nm) of textured Mg 2 Al 4 Si 5 O 18 :Eu 2+ ceramics is 2.17 times that of traditional Y 3 Al 5 O 12 :Ce 3+ phosphor wheel. The red-emitting textured Mg 2 Al 4 Si 5 O 18 :Eu 2+ cordierite ceramic herein enables an improved light-color saturation experience, and it is potential in the next-generation laser phosphor display applications.
研究领域:
材料科学
·
光电技术
·
显示技术
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Wenhui Geng,Xinmeng Hu,Yinhang Zhang,Xinze Li,Qinhua Zhou,Kuikui Xiao,Dong Cai,Shuo Yang,Huagui Nie,Haolin Wang,Zhi Yang
Polyacrylic acid (PAA) based-binders equipped with various functions are paramount importance in suppressing the expansion of silicon (Si)-based anodes. However, PAA molecules tend to slip from the surface of active materials during the expansion of Si-based anode due to their 1D linear structure. In this study, inspired by the strong adhesion mechanism of multiple antennae of Parthenocissus, a new polymer binder based on boronic acid (BA) and dopamine-modified PAA with fast self-healing, strong adhesion and stable mechanical performances is synthesized. Due to the abundant dynamic hydrogen bonds , the binder exhibit fast self-healing function at room temperature , thus guaranteeing the superior cycle stability of the electrode. These dynamic hydrogen bond sites not only endow the binder with strong adhesion but also contribute to an average peeling force of 1.50 N for Si@PDB, significantly higher than that of Si@PAA (0.79 N) and Si@PAB (1.29 N). Consequently, the Si anodes utilizing the rationally designed binder demonstrate excellent cycling stabilities (2538 mAh g −1 after 200 cycles) and rate performances (1973 mAh g −1 at 8.0 A g −1 ). These results suggest that the biomimetic binder can serve as a promising and effective candidate for Si-based anodes towards high-performance lithium-ion batteries.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2025
·
IF 4.1
Zhipeng Li,Zhengjian Gu,Zhuoqi Gong,Yao Zhang
Silicon (Si) has become a promising anode for next-generation lithium-ion batteries due to its high theoretical specific capacity (4200 mA h g −1 ). However, large volume changes and fragility during cycling lithiation-delithiation have resulted in severe capacity degradation. To depress the drastically volumetric change of silicon and boost the cycling charge-discharge performance, we synthesized Ga@pSi@C composite anode by means of magnesiothermic reduction on aerogel silica, encapsulation with dopamine, infiltration with liquid metal gallium, and carbonization. On the one hand, gallium serves as a self-healing component as well as a good conductive material. On the other hand, the carbon shell acts as a mechanical constraint and support. Using this strategy, the synthesized Ga@pSi@C composite anode can effectively suppress the fragmentation of silicon particles during cycles. As a result, the initial discharging capacity of Ga@pSi@C anode delivers a capacity of 2113 mA h g −1 at the first cycle with initial Coulombic efficiency (CE) of 75.3 %, which can retain a capacity of 1262 mA h g −1 after 100 cycles. A reversible capacity of 834 mA h g −1 can be maintained after 300 cycles at a current density of 2000 mA g −1 . The infiltration-encapsulation strategy may provide new idea for improving the performance of anode materials besides porous silicon.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Bihong Li,Yijie Ding,Weizhong Zheng,Weizhen Sun,Ling Zhao
Zeolites have emerged as the highly potential solid catalysts in isobutane (C4) alkylation due to their adjustable acidity and structural properties. The introduction of rare earth metal or transition metal can effectively regulate the acidic site distribution and strength of beta zeolite. The structural stability, acid properties and catalytic performance of low Si/Al ratio beta zeolites functionalized with various lanthanum and copper loadings are systematically investigated for the C4 alkylation through experimental characterization and catalytic evaluation. It is revealed that the optimal metal loading can impart superior acidic properties to beta zeolites. Lanthanum modification increases the total amount of Brønsted acid sites (BAS), and enhances the population of moderate and strong BAS compared to copper modification. Catalytic evaluation demonstrated that copper-modified beta zeolites achieve a higher research octane number (RON) up to 93 for alkylate, but exhibit a shorter catalyst lifetime. Lanthanide-modified counterparts exhibit a catalytic lifetime of 320 min and 65 wt% trimethylpentane (TMPs) selectivity with relatively stable RON of 90 during a prolonged stable operation, and meanwhile, the optimal lanthanide-modified HB-1 zeolites (0.35 wt% La@HB-1) demonstrate high level of catalytic lifetime and TMPs selectivity after three cycle experiment. The information obtained from this work will contribute to a better understanding of the metal-modified low-Si/Al-ratio beta zeolites for catalyzing the C4 alkylation.
✓ 已验证
产品关联
DOI
高影响因子
Carbon Letters
·
2025
·
IF 5.8
Lee Kang Mi,Lee Jong Dae
In this study, an anode composite material was fabricated by embedding spherical carbon-coated nanosilicon (Si@C) into a layered carbon-coated silicon (L-Si/C) to enhance the capacity and stability of silicon-based lithium-ion batteries. The L-Si/C material was obtained by reacting CaSi 2 through a CO₂-assisted carbonization process, followed by removal of the CaCO 3 byproduct via HCl etching. Si@C particles, prepared using polydopamine as a carbon precursor, were uniformly embedded in the L-Si/C via ultrasonic treatment. The physical properties of the prepared anode composites were analyzed using HR-SEM, EDS, XRD, and BET. The electrochemical performances were investigated using 1 M LiPF 6 in EC:DEC (1:1 vol%) with 10 wt% FEC as the electrolyte, through charge–discharge cycling, rate capability tests, electrochemical impedance spectroscopy (EIS), and differential capacity (dQ/dV) analysis. L-Si/C exhibited the best electrochemical performance under the thermal treatment condition of 720 °C and a CO 2 flow rate of 100 sccm. In addition, the application of ultrasonic treatment improved structural stability and rate capability. Consequently, the S_L-Si/C + Si@C-2 exhibited a high initial discharge capacity of 2700.7 mAh/g at 0.1 C and a capacity of 617.4 mAh/g at a high rate of 6 C.
研究领域:
材料科学
·
电化学
·
储能技术
·
纳米材料
·
锂离子电池
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Feixiang Bian,Jiage Yu,Wenlong Song,Hui Huang,Chu Liang,Yongping Gan,Yang Xia,Jun Zhang,Xinping He,Wenkui Zhang
Si/graphene composites have attracted great attention for application as anode materials of Li-ion batteries owing to their superior capacity and cycle stability. Magnesiothermic reduction of silica is a quite scalable and cost-effective method to synthesize Si/graphene composite. However, this remains a considerable challenge because the intense heat accumulation during the violent exothermic reaction makes it difficult to remain the desired nanostructure of the silica precursor and results in severe aggregation of silicon grains. Herein, we offer a mild and scalable route to efficiently convert silica into morphology-controlled Si nanoparticles by magnesium hydride (MgH 2 ) reduction at a low temperature. The Si nanoparticles that are produced from silica template structure are fine and narrowly distributed, showing the ability to preserve morphology characteristics. The as-synthesized Si/rGO composite exhibits outstanding electrochemical properties , delivering a superior rate capability (513 mA h g −1 at 5 A g −1 ) and a high reversible capacity of 894 mA h g −1 over 100 cycles at 0.2 A g −1 . We believe MgH 2 reduction of silica demonstrates its great potential in fabricating Si based anode materials.
研究领域:
材料科学
·
纳米技术
·
电化学
·
能源存储
·
无机合成
·
锂离子电池
·
纳米材料
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Mengxuan Zhang,Lu Zhao,Dong Sun,Yankun Sun,Chunming Xu,Shichao Lu,Tao Li,Yongfeng Li,Zhihua Xiao
The poor electronical conductivity and large volume change of nano-silicon anode has seriously hindered its further application. To overcome these drawbacks, we employed the S-doped multiwalled carbon nanotubes (SCNTs) as the conductive additive to fabricating a scaffolded framework for the first time. The as-assembled Si anode with 5 wt% SCNTs (Si@C-5SCNTs) shows a large specific capacity of 939 mA h g −1 at 2 A g −1 within 0–1 V, significantly higher than that of Si@C (466 mA h g −1 ) and Si@C-5CNTs (720 mA h g −1 ), showing a superior rate performance. Besides, it shows higher initial coulombic efficiency, Li-ion diffusion coefficient, cycling performance, and smaller volume change than that of Si@C and Si@C-CNTs at room temperature. Even at 40 ℃, the Si@C-5SCNTs anode still show a superior rate performance (1842 and 819 mAh g −1 at 0.05 and 2 A g −1 , respectively) and cycling stability (83.6% capacity retention) than that of Si@C and Si@C-5CNTs. To better explain the significantly enhanced electrochemical performance of Si anode both room and high temperature conditions, both the chemo-mechanical coupling and internal temperature distribution models have been rational constructed, and further demonstrated that the SCNTs can effectively buffer the volume expansion and reduce the internal local temperature rise.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
先进电池技术
✓ 已验证
DOI
高影响因子
Current Computer-Aided Drug Design
·
2024
·
IF 1.5
Na An,Dongxing Zhang,Jile Xin,Xinyi Zhang,Zhijuan Zhang,Ligang Ma,Le Zhao,Huimin Wu,Weisheng Feng,Xiaoke Zheng
Background: Si-Ni-San (SNS) is the formula prescription of Traditional Chinese Medicine (TCM) with anti-depression properties, but its underlying mechanisms remain unclear. Objective: This study provides novel approaches for the study of Traditional Chinese Medicine (TCM) and offers new opportunities for exploring the pharmacological properties of SNS. Methods: The ingredients in SNS implicated in the treatment of depression were identified and studied using network pharmacology. SwissTargetPrediction and molecular docking were used to study the interaction of SNS ingredients and their targets. The protective effect of these ingredients and their cocktail in rat pheochromocytoma cells (PC12) exposed to corticosterone (Cor) were evaluated using the CCK-8 assay, Hoechst 33342 staining, 2',7'-dichlorodihydro fluorescein diacetate (H2DCFDA) staining, 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging assay, and in-cell Western analysis. Results: The network pharmacology study showed that the HIF-1 signaling pathway was the most crucial pathway implicated in the anti-depressive property of SNS. MAPK1 (ERK2), MAPK3 (ERK1), AKT1, VEGFA, STAT3, and EGF were identified as hub target proteins in the HIF-1 signaling pathway. Quercetin, naringenin, licochalcone A, and kaempferol from SNS, which targeted the six proteins mentioned above, were used to create a cocktail. This cocktail exerted protective properties, decreased the oxidative stress in PC12 exposed to Cor, and successfully regulated the expressions of AKT1, p-AKT1, ERK1, ERK2, p-ERK1/2, STAT3, p- STAT3, and VEGFA induced by Cor exposure. The SwissTargetPrediction and molecular docking study showed that the cocktail may regulate the HIF-1 signaling pathway by directly binding with AKT1 and MAPK1. Conclusion: The cocktail from SNS comprised of quercetin, naringenin, licochalcone A, and kaempferol exerts anti-depression potentiality by modulating the HIF-1 signaling pathway via direct interactions with AKT1 and MAPK1.
研究领域:
神经药理学
·
传统中药研究
·
分子生物学
·
药效学
·
细胞信号传导
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Liangtai Wang,Yanjie Niu,Haobo Liu,Fengshuo Xi,Jie Yu,Shaoyuan Li,Jijun Lu,Xiuhua Chen,Kuixian Wei,Wenhui Ma
The photovoltaic industry has generated a large amount of silicon cutting waste (SiCW), whose disposal presents an urgent environmental issue. In this study, micron-sized flaky silicon cutting waste was transformed into silicon nanowires, and Si/TiSi 2 nanocomposites were synthesized through molten salt electrolysis using photovoltaic SiCW and TiO 2 as precursors. Lithium-ion batteries using the resulting composites as an anode exhibited an initial discharge specific capacity of 1936.1 mAh g⁻¹ and an initial Coulombic efficiency (ICE) of 83.99 %. After 200 cycles, its reversible specific capacity reached 1133.8 mAh g⁻¹, surpassing that of the molten salt electrolytic pre-oxidized SiCW (535.5 mAh g⁻¹) and untreated SiCW (385.0 mAh g⁻¹). This study presents a novel approach for modifying silicon-based anode materials while offering a sustainable and environmentally friendly method for recycling photovoltaic silicon waste.
研究领域:
材料科学
·
电化学
·
储能技术
·
回收技术
✓ 已验证
DOI
高影响因子
Defence Technology
·
2026
·
IF 6.4
Zhaoqi Niu,Yuxuan Hai,Jifan Hu,Chengshuang Zhang,Shumeng Wang,Mingjie Zhao,Fang Chen,Xiaoyan Ma,Zhilong Yu,Xiao Hou
Thermal protection materials (TPMs) serve as a critical barrier ensuring the safe flight of spacecraft. Achieving simultaneous optimization of load-bearing capacity and ablation resistance in TPMs while maintaining lightweight characteristics poses a significant challenge. To address this, the present study proposes an interface engineering strategy that constructs an interface-ceramizable aramid nanofiber (ANF) preform reinforced phenolic aerogel composites. The ANF not only provides essential mechanical support but also endows the material with structural stability under high-temperature ablative environments. Benefiting from the design of the interface layer, the ANF and phenolic aerogel are tightly bonded; during the pyrolysis process, their linear shrinkage rates are highly compatible, effectively suppressing the formation of microcracks. Meanwhile, the surface functional layer can be in-situ sintered into high-temperature-stable phases (e.g., SiC, ZrC), significantly improving ablation resistance. The resulting composites exhibit a density as low as 0.327 g/cm 3 and a compressive modulus as high as 285.7 MPa, allowing flexible adaptation to various application requirements. Notably, after exposure to a butane flame for 120 s, the linear and mass ablation rates reach 0.0113 mm/s and 0.00134 g/s, respectively, with the back temperature only 100.9 °C. This strategy offers a fundamental solution and a scalable fabrication route for next-generation high-performance thermal protection systems for spacecraft.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）