CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Wen Yang,Shuwei Li,You Liu,Yanyan Li,Ping Jiang,Xiaobo Hong,Gaofeng Li,Bo Fan,Fang Chen,Liangdong Lin,Zhijun Qiao,Dianbo Ruan
The volume swelling issues and corresponding negative effects of Si-based anodes exclude them from practical applications. Among varied novel strategies, electrolyte engineering, with its high operability, can effectively optimize the solid electrolyte interface (SEI) to enhance its ion transport and anti-swelling properties. Especially, the preference of SEI for LiF-rich inorganics and viscoelastic oligomers makes lithium bis(fluorosulfonyl)imide (LiFSI) and 1,3-dioxolane (DOL) ideal components of the electrolyte. However, LiFSI triggers the in-situ polymerization of DOL, resulting in the complete solidification of the electrolyte, which will lead to even more serious interfacial problems. To address this, a polymerization inhibitor-containing electrolyte was designed to enable stable coexistence of DOL and LiFSI. The inhibitor will decompose preferentially than the initiator at the electrode surface during the lithiation of Si anode, losing the inhibition effect on the polymerization reaction, and DOL will polymerize (PDOL) only at the Si surface to form a strain-resistant interface. While outside the PDOL-rich polymer layer, due to the invariably presence of inhibitor, DOL will not polymerize, and the electrolyte maintains good wettability to the electrode. Benefiting from such a selective interfacial polymerization electrolyte (SIPE), the SEI exhibits excellent tensile resistance and ionic conductivity, which survives repeated volume changes and mitigates the negative effects caused by continuous SEI formation and Si particle pulverization. As a result, at a current density of 1500 mA g −1 (≈ 0.42 C), the SIPE-equipped silicon anode still has a reversible capacity of 1739 mAh g −1 after 200 cycles, with an improved capacity retention rate from 45.4 % to 84.3 %.
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
ACS Applied Nano Materials
·
2021
·
IF 5.097
Su You,Li Zhang,Yongqiang Yu,Wanqun Zhang,Huanran Li,Jie Meng,Qunxiang Li,Qing Yang
Group I–III–VI2 semiconductors are promising for the fabrication of electronic and photoelectronic devices because of their tunable band gaps and intensive absorption in visible and near-infrared regions. Here, ternary AgInTe2 nanostructures have been synthesized via a facilely designed solution-phase procedure at 240–280 °C from AgNO3 and In(acac)3 in oleylamine reacted with TeO2 dissolved in 1-dodecanethiol. They illustrate truncated quasitetrahedrally geometrical shapes from the phosphine-free solution synthetic route and could be spin-coated on silicon wafer to set up a vertical AgInTe2/Si heterojunction-based photodetector. The device is highly sensitive to visible and near-infrared illuminance and has remarkable photoresponsive properties with an on/off switch ratio of 780 at a reverse bias of −5 V, a high responsivity (2.82 A W–1), specific detectivity (8.12 × 1011 Jones), and a low noise equivalent power (2.46 × 10–13 W Hz–1/2) at a bias of −2 V. Especially, the device exhibits fast response speeds (τrise = 5.2 μs, τfall = 18.4 μs), which would be a vital figure of merit for its technical application. The present work offers an available strategy for the tunable synthesis of ternary and even multiple-component tellurides beyond the demonstrated high-quality AgInTe2 nanostructures and would provide a simplified way to heterostructure-based photodetectors with high-responsivity and fast-speed performances.
研究领域:
材料科学
·
光电设备
·
半导体物理
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Zhiwei Liu,Nan Ma,Shuaibing Yu,Jinming Kong,Xueji Zhang
Ultrasensitive protein detection has considerable potential for early diagnosis and screening of diseases. Here, based on Hemin-catalyzed surface-initiated reversible addition-fragmentation chain transfer (SI-RAFT) polymerization, this work developed an assay for ultrasensitive fluorescent biosensing of proteins and established a thrombin fluorescent sensor. First, the amino-modified aptamer 1 was immobilized on Fe 3 O 4 magnetic beads, and then thrombin was added to form the aptamer 1-thrombin bioaffinity complex. Another thiol-modified aptamer 2 binds to bound thrombin to form a sandwich structure. Fluorescein O-methacrylate was used as the monomer, acetylacetone (ACAC) as the initiator, and Hemin as the catalyst. Through Hemin-catalyzed SI-RAFT polymerization, a large number of thrombin molecules are labeled with fluorescein O-methacrylate, resulting in severalfold amplification of the fluorescent signal. By detecting the fluorescent signal in thrombin from 1.0 fM to 0.1 nM, the proposed super sandwich strategy can detect thrombin at 0.98 fM, which is lower than the detection limit of most other methods.
研究领域:
分析化学
·
生物传感器
·
高分子科学
·
蛋白质检测
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS A-GENERAL
·
2016
·
IF 4.012
Zhen Dong,Tao Wang,Jie Zhao,Teng Fu,Xuefeng Guo,Luming Peng,Bin Zhao,Nianhua Xue,Weiping Ding,Zaiku Xie
The hydrogenation of nitrobenzene (NB) in acid medium is regarded as the most promising route to prepare p- aminophenol (PAP). The noble metals such as Pt have been reported as commercial catalysts but base metals are inactive due to strong acids needed in the reaction medium. Therefore, Ni-based catalyst has been attempted using solid acids, however, the results are not attractive. In this work, in order to improve the acid-resistance of Ni in sulfuric acid, we insert Si into the Ni crystal structure to form Ni-silicides. The as-prepared supported Ni-silicides nanoparticles exhibit excellent acid-resistance and perform high activity and selectivity of the entitled reaction. NiSi 2 nanoparticles supported on acid-treated active carbon are highly active and selective to convert NB to PAP in sulfuric acid. The XPS measurements show that the Ni in the Ni-silicides donates electrons to silicon, but the Ni valence is still far lower than nickel oxide, which causes its stability in acids and the activity to hydrogen activation is partially reserved. Thus, the catalysts exhibit excellent stability in alloy structure, morphology, and catalytic performance in reuses, suggesting the Ni-silicides nanoparticles as the promising substitute for precious metal for PAP manufactures.
研究领域:
催化化学
·
材料科学
·
有机合成
✓ 已验证
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
·
2024
·
IF 3.7
Jiaxin Zhang,Lu Wang,Zhiqiang Ma,Chuanjun Di,Guanghui Chen,Jipeng Dong,Jianlong Li,Fei Gao
CuCl-based catalysts are the most commonly used catalysts for the “direct synthesis” of trimethoxysilane (M3). CuCl species are sensitive to air and water, and are prone to oxidation deactivation. When CuCl is directly used as a catalyst, it needs to be purified before the utilization, and the operating conditions for the catalyst preparation are relatively harsh, requiring the inert gas environment. Considering a high-temperature activation step required for CuCl-based catalysts used for catalyzing synthesis of M3 to form active phase Cu–Si alloys (Cu x Si) with Si powder, in this work, a series of catalysts for the “direct synthesis” of M3 were obtained by a one-step high-temperature activation of the mixture of stable CuCl 2 precursors, activated carbon-reducing agent, and Si powder, simultaneously achieving the reduction of CuCl 2 to CuCl and the formation of active phase Cu x Si alloys of CuCl with Si powder. The prepared samples were characterized through various characterization techniques, and investigated for the catalytic performance for the “direct synthesis” of M3. Moreover, the operation conditions were optimized, including the activation temperature, catalyst dosage, Si powder particle size, and reaction temperature. The characterization results indicate that during the one-step activation process, the CuCl 2 precursor is reduced to CuCl, and the resulting CuCl simultaneously reacts with Si powder to form active phases Cu 3 Si and Cu 15 Si 4 alloys. The optimal catalyst S acm (250, 0.8:10) exhibits a good catalytic activity with selectivity of 95% and yield of 77% for M3, and shows a good universality for various alcohol substrates. Furthermore, the catalytic mechanism of the prepared catalyst for the “direct synthesis” of M3 was discussed.
研究领域:
化学工程
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2019
·
IF 6.97
Fang Cheng,Hanqi Wang,Wei He,Bingbing Sun,Jing Zhao,Jingping Qu,Qing Wang
This article demonstrates the catalytic oxa-Michael reaction of inorganic silanol groups with vinyl sulfones, which facilitates an efficient strategy for functionalization of the silica surface. The strategy was applied on materials ranging from nanoscale to macroscale silica, and the surface functionalization was achieved in hours using organo-catalysts at mild temperature. The formation of Si–O–C bonds on the surface was characterized by solid-state 13C cross polarization-magic angle spinning nuclear magnetic resonance spectroscopy, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. Our strategy showed several advantages over traditional methods, and the resulting Si–O–C bond exhibited distinct behaviors toward different solvents. Organic solvents would stabilize the functionalized silica materials, while aqueous solutions would result in degradation affected by both solution and surface factors. With use of divinyl sulfone as a cross-linker, a variety of molecules can be immobilized and sequentially released in a controllable manner, which would benefit a broad range of applications from sensing to drug and catalyst carriers.
研究领域:
材料科学
·
化学工程
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2026
·
IF 5.6
Xiaohong Li,Cai Ye,Jianjun Chen,Meijing Wang
A novel aluminum and titanium co-doped polycarbosilane (PATCS) was synthesized by the reaction of liquid polycarbosilane (LPCS), Al(acac) 3 , and Ti(Cp) 2 Cl 2 . The thermal polymerization mechanism of the PATCS was that Si-H bonds in LPCS reacted with C=C/Ti-Cl bonds in Ti(Cp) 2 Cl 2 and Al-O-C/Al-O=C groups in Al(acac) 3 to form Si-Ti, Si-C-C, Si-O-Al bonds. The TG-DSC results showed that the synthesized PATCS exhibited greater stability and a higher ceramic yield compared to PACS. A novel type Si(Al,Ti)CO ceramic fibers (AT-11) with tensile strength (2222 MPa) were obtained by melt-spining, curing, pyrolysis of the synthesized PATCS. After sintering, the AT-13 showed excellent electromagnetic wave absorption. When the thickness reached 2.3 mm, the minimum reflection loss (RL min ) vaule and the EAB were -52.02 dB and 5.12 GHz (RL < −10 dB, 10.64-15.76 GHz), respectively. While the AT-18 fibers showed higher high-temperature creep resistance in the range of 1300∼1700 °C than those of Si(Al)C ceramic fibers.
✓ 已验证
产品关联
DOI
高影响因子
ChemCatChem
·
2013
·Vol. 5
·期 12
·3788-3793
·
IF 5.181
Yajun Xu,Lei Wang,Wenwen Jiang,Hongwei Wang,Jianlin Yao,Qinghua Guo,Lin Yuan,Hong Chen
Graphical No need to be noble: Hydrogen fluoride-treated silicon nanowire arrays (H-SiNWAs) are an efficient, recyclable catalyst for the chemical reduction of nitrobenzene derivatives. The activity of H-SiNWAs is because of the presence of Si H bonds and the length of the nanowires. Silicon nanowire arrays (SiNWAs) are under extensive investigation for solar cells and biomedical applications. This study reports for the first time that hydrogen fluoride-treated (H)-SiNWAs are an efficient catalyst for the reduction of nitrobenzene derivatives. We show that SiNWAs, after hydrogen fluoride treatment, have a high catalytic activity in p -nitrophenol (PNP) reduction. The conversion rate of PNP by H-SiNWAs increases with time and is almost complete within 30 min, which thus indicates catalytic activity comparable to that of platinum nanoparticles. The catalytic activity of SiNWAs is closely related to the chemical composition and specific morphology of the surface. Si H bonds on the surface are essential for activity, and arrays with longer nanowires showed a higher catalytic activity. Moreover, the activity can be easily regenerated by hydrogen fluoride treatment. It was also found that H-SiNWAs exhibit a similar catalytic activity for the reduction of other nitrobenzene derivatives such as p -nitroaniline and sodium m -nitrobenzenesulfonate. It is concluded that H-SiNWAs may be considered as an environmentally friendly alternative to noble-metal-based catalysts for the reduction of nitrobenzene derivatives.
研究领域:
材料科学
·
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2026
·Vol. 46
·期 10
·118263
·
IF 6.3
Binbin Fan,Wei Sun,Dengke Zhao,Bohan Wang,Shuo Zhao,Feng Hu,Jie Zhang,Yiyao Ge,Zhipeng Xie,Kexin Chen,Guanghua Liu
Achieving a balance between high thermal conductivity and mechanical property remains a critical challenge for sintered reaction-bonded Si₃N₄ (SRBSN) ceramics. This work investigates the effects of α- and β-Si₃N₄ additions on nitridation behavior, microstructural evolution, and properties of SRBSN ceramics. The results reveal fundamentally different roles of α- and β-Si₃N₄ during nitridation and sintering. Moderate α-Si₃N₄ addition suppresses the α→β transformation, inducing localized grain growth and a bimodal microstructure at 20 wt%. In contrast, β-Si₃N₄ markedly promotes the α→β transformation and heterogeneous nucleation. The sample with 30 wt% β-Si₃N₄ exhibits a pronounced bimodal grain structure with 20.2 % coarse elongated grains (>6 μm), a maximum mean aspect ratio of 1.89, an ultrathin grain-boundary film (∼2.2 nm), and a nitrogen-rich intergranular phase. Consequently, a high thermal conductivity of 114 W·m⁻¹ ·K⁻¹ is achieved while maintaining a flexural strength of 791 ± 29 MPa and a fracture toughness of 9.0 ± 0.3 MPa·m 1/2 .
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Wangwu Li,Jiao Peng,Hui Li,Zhenyu Wu,Baobao Chang,Xiaowei Guo,Gairong Chen,Xianyou Wang
Si-based anodes have revealed the potential as the next generation of lithium ion battery anode material , whereas the poor conductivity and huge volume changes during (de)lithiation process of silicon still limit their practical application. Herein, the Si/nitrogen doped carbon layer/carbon framework microspheres (SCM) are designed by nano-Si via electro-spray technology as anodes for lithium ion batteries. It has been found that the SCM consists of individual carbon-coated nano-Si primary particles linked by PAN framework, in which the carbon buffer layer can further absorb the stress of volume changes during charge/discharge process, and the carbon framework carbon framework not only provides fast diffusion path of electron, but also effectively reduces the consumption of electrolyte. Therefore, the initial columbic efficiency (ICE) of SCM anode can reach as high as 72%, and the SCM anode also shows a high specific capacity of 1192 mAh g −1 at 0.2 A g −1 and keeps a reversible capacity of 746 mAh g −1 after 200 cycles, demonstrating the as-designed SCM possesses an high ICE and a good electrochemical performance. This strategy provides a significant inspiration for fabricating high-performance Si/C anode materials of lithium-ion battery.
研究领域:
材料科学
·
储能
·
电化学
·
纳米技术
✓ 已验证
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
ACS Nano
·
2019
·
IF 13.903
Shiqi Liu,Xu Zhang,Pengfei Yan,Renfei Cheng,Yushu Tang,Min Cui,Boya Wang,Liqiang Zhang,Xiaohui Wang,Yuyuan Jiang,Lin Wang,Haijun Yu
The development of silicon-based anode materials is important for improving the energy density of current lithium ion batteries. However, there are still strong demands for these materials with better cycle stability and higher reversible capacity. Here, a kind of dual bond restricted MXene-Si-CNT composite anode materials with enhanced electrochemical performance is reported. These dual bonds have been clearly revealed by an X-ray photoelectron spectroscopy technique and also proven by theoretical calculations with spontaneous reaction energy values (−0.190 and −0.429 eV/atom for Ti–Si and C–Si bonds, respectively). The cycle stability of the composites, prepared by a facile ball-milling synthetic method, can obviously be improved because of the existence of these dual bonds and the multidimensional constructed architecture. The MXene-Si-CNT composite with 60 wt % silicon possesses the best overall performance, with ∼80% capacity retention after 200 cycles, and achieves 841 mAh g–1 at 2 A g–1. This approach demonstrates a promising strategy to exploit high-performance anode materials and lessens the immanent negative effect of silicon-based materials. Furthermore, it is significant to extend this method to other anode materials with serious volumetric change problems during the cycling process.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）