Applied Materials Today
·
2021
·
IF 10.041
Yuchan Zhang,Liwen Tan,Yang Wu,Yongling An,Yongpeng Liu,Yusheng Wang,Chuanliang Wei,Baojuan Xi,Shenglin Xiong,Jinkui Feng
2D siloxene has got a lot of attention owing to unique structure, minimized volume change and high theoretical capacity. However, low electronic conductivity and exfoliation from Cu current collector leads to poor rate performance and irreversible cycling performance. To solve the problems, a robust room temperature liquid metal (LM) matrix confined siloxene structure is designed by forming metal bond via heat treatment at 80 °C. Through heating, LM permeates into the siloxene electrode to improve the conductivity and reacts with Cu current collector to create CuGa 2 alloy. With the synergistic advantages of high electronical conductivity, environmentally friendly, and self-healing character of liquid metal, the modified siloxene anode exhibits revisable cyclic stability about 847 mAh g −1 at 2000 mA g −1 for 300 cycles and 618 mAh g −1 at 8000 mA g −1 for 700 cycles.
研究领域:
材料科学
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能源存储与转换
✓ 已验证
DOI
高影响因子
Small Methods
·
2022
·Vol. 6
·期 6
·2200306
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IF 15.367
Yuchan Zhang,Yang Wu,Yongling An,Chuanliang Wei,Liwen Tan,Baojuan Xi,Shenglin Xiong,Jinkui Feng
Siloxene as a new type of 2D material has wide potential applications due to its special structure. Especially, as anode for lithium-ion batteries, siloxene shows promising prospect due to its small volume change and low diffusion pathway. However, the unstable solid electrolyte interphase and low electronic conductivity lead to the low Coulombic efficiency, poor rate capability, and limited cycling performance. To settle the problems, a thin porous covalent organic framework (COF) coating layer is designed by in situ growth on micro-sized siloxene. With the inherent ionic conductive and electrolyte compatible advantages of COF, the engineered siloxene demonstrates superior electrochemical performance with 96% capacity retention at 8 A g −1 for 1500 cycles.
研究领域:
材料科学
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能源存储技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
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2019
·
IF 0
Xinling Xu,Liping Zhou,Degong Ding,Yang Wang,Jingyun Huang,Haiping He,Zhizhen Ye
Two-dimensional silicon-based materials have unique physical and chemical properties due to high surface area and quantum confinement effects. Herein, a topochemical reaction method is used for preparing silicene quantum dots confined in few layer siloxene nanosheets with FeCl3·6H2O as oxidant, which shows a thickness less than 2 nm. The experimentally prepared siloxene nanosheets are dispersible, with silicene quantum dots having an average diameter less than 5 nm. The silicene quantum dots are self-organized through the oxidation of FeCl3, showing unique optical properties of blue emission. The UV–visible absorption and PL emission spectra indicate the quasi-direct band gap transition to the emission. Besides, the few-layer siloxene nanosheets with silicene quantum dots have a radiative lifetime of 1.098 ns at an emission wavelength of 435 nm, which derives from the quasi-direct band transition of silicene quantum dots. Such two-dimensional nanosheets of silicon possess potential applications for the emitting layer materials of blue light-emitting diodes (LED).
研究领域:
材料科学
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光学工程
✓ 已验证
产品关联
DOI
LANGMUIR
·
2025
·
IF 3.9
Chao Zhang,Changhua Li,Xiaoxia Huang,Jing Zhang,Xiaoyu Mao,Wei Ren,Yi He
The long-term corrosion resistance of metal coatings remains a persistent challenge. Single nanofillers often fail to address this issue comprehensively. Herein, siloxene (S) was employed as a substrate to construct a composite structure integrating polyaniline (PANI) and Ce-MOF. The PANI structure imparts passive corrosion protection to the coating, while the pH-responsive Ce-MOF structure endows the coating with efficient self-healing capability. In addition, the fibrous PANI and the unique flexible structure of Ce-MOF endow the two-dimensional S sheets with good load-bearing capacity, thus enabling the composite coating to exhibit enhanced mechanical properties, which include adhesion strength, tensile performance, and wear resistance. It is found through research that the |Z|0.01 Hz of the composite coating increases by 1.5 orders of magnitude in the initial stage of immersion, and the tip current value decreases by more than 80% after being immersed for 20 days. A more than 80% decrease in wear rate is observed in the composite coating, and the adhesion, tensile strength, and tensile modulus of the coating are significantly improved. This study offers significant perspectives on the development of versatile nanofillers for epoxy coatings and establishes an application strategy for S materials in metal coating systems.
研究领域:
材料科学
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腐蚀工程
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高分子科学
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纳米技术
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表面工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）