RSC Advances
·
2017
·Vol. 7
·期 58
·36697-36704
·
IF 3.108
Lingzhi Qian,Jin-Le Lan,Mengyao Xue,Yunhua Yu,Xiaoping Yang
SiOx-based anodes have attracted tremendous attention owing to their low cost, higher theoretical capacity than graphite and lower volume expansion than pure silicon. In this work, a simple and cost-effective two-step ball-milling method was proposed to fabricate Si/SiOx/C composites by using commercial SiO and graphite carbon as raw materials. The two-step ball-milling synthesis of the Si/SiOx/C composites can avoid the generation of an inert SiC phase and realize the uniform dispersion of Si/SiOx in graphite carbon, which offers good electrical conductivity and relieves the volume expansion of the Si/SiOx phase. Owing to the synergistic effect of the Si/SiOx phase and the graphite carbon, the typical Si/SiOx/C electrode exhibits a stable and high capacity of 726 mA h g−1 after 500 cycles at a current density of 0.1 A g−1 with a capacity retention of 82%. The two-step ball-milling preparation of the Si/SiOx/C composite provides a facile approach to fabricate high-performance SiOx-based anode materials.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2022
·
IF 9.794
Zhaoyu Zhang,Yufei Zhang,Minghui Ye,Yongchao Tang,Xiaoqing Liu,Cheng Chao Li
SiO x /C composites are highly potential anode alternatives for next-generation lithium-ion batteries (LIBs) owing to their low cost and high theoretical capacity. However, the sluggish lithium-ion diffusion kinetics severely limit their practical capacity and rate performance. Herein, a high-capacity and high-rate anode based on commercial SiO x /C is facilely achieved by in situ constructing a Li + conductive interphase (LCI) to simultaneously boost the transport efficacy of Li + ions and buffer the volume expansion. The as-designed, LCI-protected SiO x /C anode delivers an exceptionally high capacity of 1420.9 mAh g −1 at 0.2 A g −1 , excellent rate performance (91.4% capacity retention from 0.2 A g −1 to 1 A g −1 ) and long cycling stability, substantially outstripping the pristine SiO x /C counterpart and most recently reported Si-based electrodes. More importantly, taking advantages of the fast and stable lithiation/delithiation processes, this electrode can also be adapted to further applications at large current densities (766.44 mAh g −1 at 5 A g −1 ) or high mass loadings (5.02 mAh cm −2 at 0.1 A g −1 , ∼3.5 mg cm −2 ). A full battery with satisfactory electrochemical performance is also demonstrated. The strategy of building ion conductive interphase to subtly tailor the transport behavior of Li + ions is anticipated to unlock the practical deployment of Si-based LIBs.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Manyuan Xu,Xiujuan Wei,Ziqiao Yan,Jinqiu Huang,Shuxing Wu,Kai-Hang Ye,Zhan Lin
Silicon oxide-based (SiOx-based) materials show great promise as anodes for high-energy lithium-ion batteries due to their high specific capacity. However, their practical application is hindered by the inevitable volumetric expansion during the lithiation/delithiation process. Constructing high-performance binders for SiOx-based anodes has been regarded as an efficient strategy to mitigate their volume expansion and preserve structural integrity. In this work, we propose a green water-solution PAA-LS binder composed of poly(acrylic acid) (PAA) and sodium lignosulfonate (LS) with fast self-healing properties. The designed binder can be restored due to the strong affinity between Fe3+-catechol coordination bonds, thereby effectively alleviating the volumetric strain of SiOx-based anodes. Notably, with an optimized LS content of 0.5%, the SiOx@PAA-LS electrode exhibits excellent performance, delivering a high capacity of 997.3 mAh g–1 after 450 cycles at 0.5 A g–1. Furthermore, the SiOx||NCM622 full cell also demonstrates superior cycling stability, maintaining a discharge capacity of 147.58 mAh g–1 after 100 cycles at 0.5 A g–1, with an impressive capacity retention rate of 82.72%.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2024
·
IF 8.9
Xuexian Yu,Jun Liu,Junmin Wu,Sainan Ma,Yingwu Luo,Xiang Gao
Among practical anode materials for next-generation lithium-ion batteries (LIBs), SiO x has garnered substantial attention owing to its relatively low volumetric variation and high theoretical capacity. Nevertheless, the volumetric change of micro-SiO x remains a formidable challenge for existing adhesives. Here, we propose an innovative design strategy that amalgamates both rigidity and flexibility, in which rigid anion gum Arabic (GA), flexible acrylic random copolymer (ARC), and carbon nanotubes (CNTs) interwoven into a 3D network with strong interfacial adhesion and excellent mechanical properties. These attributes effectively restrict SiO x particles and favor a stable solid electrolyte interphase (SEI) layer formed on SiO x . Here, GA plays a pivotal role in dispersing CNTs and maintaining their consistent proximity to SiO x , thereby establishing stable electron conduction networks. The SiO x electrode still sustains a specific capacity of 760 mAh g −1 after 350 cycles under a high current of 1C. Additionally, at 0.2C, the SiO x electrode attains a notably high capacity of 1105 mAh g −1 with a capacity retention of 72.9 % at the 300th cycle, while exhibiting an excellent areal capacity of 1.4 mAh cm −2 even after 400 cycles. This work develops a straightforward yet highly efficacious approach for fabricating high areal capacity electrodes and offers promising prospects for improving the stableness of Si-based anodes.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale Research Letters
·
2018
·Vol. 13
·期 1
·1-5
·
IF 3.125
Hua Qiqi,Dai Dongyang,Zhang Chengzhi,Han Fei,Lv Tiezheng,Li Xiaoshan,Wang Shijie,Zhu Rui,Liao Haojie,Zhang Shiguo
Although several Si/C composite structures have been proposed for high-performance lithium-ion batteries (LIBs), they have still suffered from expensive and complex processes of nano-Si production. Herein, a simple, controllable oxygen inward diffusion was utilized to transform Si sludge obtained from the photovoltaic (PV) industry into the nano-Si/SiO x structure as a result of the high diffusion efficiency of O inside Si and high surface area of the sludge. After further process, a yolk/shell Si/C structure was obtained as an anode material for LIBs. This composite demonstrated an excellent cycling stability, with a high reversible capacity (∼ 1250 mAh/g for 500 cycles), by void space originally left by the SiO x accommodate inner Si expansion. We believe this is a rather simple way to convert the waste Si into a valuable nano-Si for LIB applications.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
环境工程
·
可持续技术
·
电池技术
✓ 已验证
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2023
·
IF 6.6
Kai Chen,Yi Tan,Yuan Gao,Yao Yao Chen
The ultrafine TiO 2 nanoparticles are encapsulated in SiO 2 nanospheres by StÖber method to form (SiO x /TiO 2 )@CN composite combined with TiO 2 crystalline transformation and carbon coating process. TiO 2 nanocrystals uniformly embedded in SiO 2 nanospheres to construct a conductivity network that accelerates lithium-ions diffusion, broadens the activation range, and releases the compressive stress induced by volume change. The uniform incorporation of nitrogen elements in the homogeneous surface carbon layer can further enhance the electrical conductivity of the composite. The synergistic combination of the above advantages can work together to endow (SiO x /TiO 2 )@CN with outstanding structural stability, high specific cycle capacity and excellent rate performance. The mass discharge capacity of M5@CN is stable at 547 mA h g − 1 after 500 cycles at 1.0 A g − 1 . The specific capacities of mass discharge at 0.2, 0.5, 1.0, 2.0, and 5.0 A g − 1 are 604, 577, 496, 375, 216 mA h g − 1 , respectively. This research provides a significant reference point for future modifications of SiO 2 -based anode materials.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Xue Mu,Chuankai Fu,Tiansheng Mu,Renlong Li,Yunzhi Gao,Chunyu Du,Geping Yin,Pengjian Zuo
The inhomogeneous nature of SiO x anode material on the atomic scale directly affects its electrochemical performance . A large irreversible capacity loss at the first cycle severely hinders the applications of SiO x materials in lithium ion batteries . The modification of SiO x by means of high-energy ball-milling and wet alkali chemical reaction can tune the ordering of amorphous silicon and silicon dioxide in SiO x materials, which is beneficial to the activation of nano silicon region and the surficial composition optimization of the lithiated products of SiO x during the first discharge process, and the formed Li 2 SiO 3 phase and the increased O/Si ratio in the surface of SiO x contribute to the improved cyclic performance. This surface regulation approach is quite simple, efficient and suitable for large-scale applications of high-performance SiO x anode material.
研究领域:
材料科学
·
电化学
·
纳米科技
·
能源存储
·
固体物理
·
表面工程
·
无机非金属材料
✓ 已验证
DOI
高影响因子
Biomaterials Science
·
2021
·Vol. 9
·期 22
·7504-7521
·
IF 6.843
Jiatao Zhang,Junyi Yang,Qiuying Li,Jie Ding,Liangjun Liu,Tong Sun,Hehe Li
Fabrication of anti-wetting coatings with anti-biofouling and anti-biofilm properties has become a hot spot of attention in recent years. However, the anti-biofilm mechanism of anti-bacterial adhesion coatings with different wet resistance properties has not been explored in detail. In this work, SiOx micro–nano particles were prepared by the Stöber method and were in situ modified. The SiOx/waterborne polyurethane (WPU) coatings were prepared by the drop coating method, and the coatings with different hydrophobic and oleophobic properties were constructed by modifying the process conditions using SiOx micro–nano particles as the roughness construction factor. Taking the dominant spoilage bacteria of aquatic products, Shewanella putrefaciens as the object, the anti-bacterial adhesion properties and anti-biofilm mechanism of the SiOx/WPU coatings were investigated. The results show that, with the unmodified SiOx particles increasing from 1.2% (w/V) to 4.0% (w/V), the hydrophobicity and thermal stability of the SiOx/WPU coatings are significantly enhanced, but the oil repellency becomes worse due to the mesoporous structure. After SiOx micro–nano particles are modified with 1H,1H,2H,2H-perfluorooctyl trichlorosilane (PFOTS), the surface energy of the SiOx/WPU coatings is decreased, the liquid repellency is improved, and the surfaces are rough with the appearance of fluorocarbon compounds, but the thermal stabilities are slightly reduced. Among them, after the secondary modification of SiOx micro–nano particles, the SiOx/WPU coatings showed excellent oil repellency, lower surface energies and higher fluorocarbon content on the surface. Particularly, SiOx/WPU coatings exhibited super-amphiphobicity after adjusting the amount of concentrated ammonia added during the secondary modification process. Meanwhile, we found that for the hydrophobic SiOx/WPU coatings, the stronger the oleophobic property, the greater the anti-bacterial adhesion ability is, while the anti-bacterial adhesion ability of hydrophobic and selectively oleophobic or superhydrophobic and oleophobic SiOx/WPU coatings is poor than that of amphiphilic SiOx/WPU coatings. However, because the super-amphiphobic SiOx/WPU coatings can be in the Cassie state with the bacterial solution for a long time, it can “capture” enough air to inhibit the irreversible adhesion of the bacteria. More importantly, the coatings can also inhibit the metabolic activity, secretion of extracellular polysaccharides, and activities of ATPase and AKP of the adherent bacteria, so it has a better anti-biofilm property. The anti-biofilm coatings can be used as food packaging materials or coated on the inner surface of packaging boxes to prevent the microbial infection.
研究领域:
材料科学
·
生物材料
·
涂层技术
·
微生物学
·
食品科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Xinxin Sun,Zhiyuan Wang,Haohui Zhang,Kaize Si,Xiaomei Wang,Xu Zhang
SiO x anodes are garnering significant interest in lithium-ion batteries (LIBs) due to theirs low voltage plateau and high capacity. However, critical drawbacks, including high expansion rate and low electronic conductivity, severely limit their practical applications. While 0D, 1D, and 2D scale nanostructures have been proven to mitigate these issues, these materials tend to accumulate after prolonged cycling, leading to adverse effects on the mass transfer processes within the electrode. Herein, we have developed a honeycomb-like SiO x /C nanoarchitecture with carbon coating based on a 3D ordered macroporous (3DOM) structure. The 3D interconnected pore windows facilitate the diffusion and transport of lithium ions (Li + ) in the electrolyte, and the extremely thin walls (<15 nm) provide a shorter transport path for Li + in the solid. The carbon cladding buffers volume expansion and enhances electronic conductivity. The as-prepared anode demonstrates a high reversible capacity of 1068 mAh/g and an initial coulombic efficiency of 70.7 %. It maintains a capacity of 644 mAh/g (capacity retention of 84.63 %) even at a high current of 1.0 A/g after 700 cycles. The unique honeycomb-like structure offers enormous insights into the study of energy storage in 3D materials.
研究领域:
材料科学
·
能源存储
·
纳米技术
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Storage
·
2023
·
IF 9.4
Wenkang Wang,Mengliang Hu,Zongtao Qu,Yao Dai,Kaixuan Chen,Shushen Lyu
Silicon suboxide (SiO x ) anodes have garnered significant attention from both academia and industry due to their superior theoretical capacity compared to graphite, as well as their improved capacity retention in comparison to pure silicon. Nevertheless, SiO x electrodes still confront the challenge of substantial volume expansion (>160 %) during the alloying process, resulting in electrode structural damage or even fragmentation and severely impacting cycling performance. Here, a three-dimensional (3D) conductive network was constructed by ethylenediamine (EDA) cross-linking reduced graphene oxide (rGO), which was encapsulated on the surface of SiO x spheres generated in situ via a magnesium thermal reduction reaction. Accordingly, the SiO x @rGO-EDA anode was prepared successfully with high reversible capacity (892 mAh g −1 after 100 cycles at 1 A g −1 ) and fascinating rate performance (447 mAh g −1 at 4 A g −1 ). In full cell, the SiO x @rGO-EDA anode also exhibits outstanding cycling stability (154 mAh g −1 after 100 cycles at 0.1C) and rate capability. The scanning electron microscopy (SEM) images captured from a top-view perspective indicate that the surface of SiO x @rGO-EDA electrode is smooth and dense without any noticeable cracks, and it maintains its structural integrity throughout the cycling process. The cross-sectional thickness of the electrode remains essentially the same. These results illustrate the superior structural stability of the EDA cross-linked graphene conductive network cladding structure, enabling it to adapt to dynamic changes and ensure efficient transport of lithium ions and electrons. The facile and versatile synthesis method of SiO x @rGO-EDA structures by incorporating cross-linking agents provides inspiration for the design of next-generation high-performance anodes.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
Advanced Composites and Hybrid Materials
·
2025
·Vol. 8
·期 6
·435
·
IF 21.8
Hong Na,Li Nian,Li Zhao,Zhang Shudong,Ali Sarmad,Song Yanping,Liu Cui,Kang Jun,Wang Shihao,Zhang Jin Zhong,Wang Zhenyang
Silicon-carbon composite anodes hold the promise to resolve the irreversible capacity fading of silicon in lithium-ion batteries but face persistent challenges dominated by unstable, physical interfacial contacts. Herein, a laser-directed covalent bonding strategy is developed to construct atomic-scale Si–N–C bridges between silicon suboxide (SiO x ) nanoparticles and a 3D nitrogen-doped graphene framework. Localized photothermal processing of polyimide-urea-SiO x precursors on carbon-coated copper foil enables in situ integration of chemically anchored SiO x within a conductive graphene network. The architecture achieves dual stabilization: (i) strong Si–N–C covalent bonds suppress interfacial cracking, while (ii) hierarchical porosity accommodates strain via elastic deformation. Critically, direct fabrication eliminates slurry-derived defects, ensuring structural integrity and minimized interfacial impedance. The optimized composite anode delivers 1826.4 mAh g -1 at 0.1 A g -1 and retains 91.3% capacity over 1000 cycles at a high current density of 2.0 A g -1 , demonstrating exceptional stability under high-rate operation. Mechanistically, density functional theory (DFT) reveals that Si–N–C bonding lowers lithium-ion (Li⁺) adsorption energy (–6.549 eV) and redistributes interfacial charge density, synergistically accelerating ion transport. This work provides atomic-scale insights into covalent interface design and establishes a scalable laser-processing strategy of composite anodes for durable high-energy-density batteries. Graphical
研究领域:
材料科学
·
储能
·
纳米技术
·
电化学
·
电池技术
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2021
·Vol. 14
·期 2
·361-372
·
IF 7.79
Ruoxi Zhao,Rui Zhang,Lili Feng,Yushan Dong,Jialing Zhou,Songnan Qu,Shili Gai,Dan Yang,He Ding,Piaoping Yang
The construction of nanoplatforms with combined photothermal properties and cascading enzymatic activities has become an active area of anticancer research. However, the overheating of photothermal therapy (PTT) and the specific properties of tumor microenvironment (TME) greatly impaired the therapeutic efficiency. Herein, we rationally fabricated a virus-like SiOx/CeO2/VOx (SCV) nanoplatform for 1064 nm near-infrared (NIR) triggered mild-temperature PTT and nanozyme catalytic therapy. Firstly, the virus-like shape of SiOx/CeO2/VOx made it favorable for cell adhesion and improved its phagocytosis in cells, and the SCV generated an effective PTT effect upon 1064 nm laser irradiation. Particularly, the produced VO2+ in TME could be used as a heat shock protein inhibitor to inhibit the expression of heat shock protein 60 (HSP60) to enhance the PTT efficiency. Moreover, the SCV nanozyme exhibited obvious peroxidase-mimic (POD) catalytic activity, which could generate highly toxic free radical ions (˙OH) under acidic conditions. The mild-temperature heat and ˙OH produced by enzymatic catalysis effectively blocked the tumor growth, as verified firmly by in vitro and in vivo tests. Our designed virus-like SCV nanozyme with POD mimic enzyme activity and a mild photothermal effect may provide a new way of thinking about the combination therapy model.
研究领域:
纳米医学
·
癌症治疗
·
材料科学
·
生物医学工程
✓ 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）