Science of Advanced Materials
·
2022
·Vol. 14
·期 8
·1298-1303
·
IF 1.067
Hu MengDi,Chen TianHong,Zhu HongLiang,Liu Hao,Shi Yi,Yan ShanCheng
Indium-tin-oxide (ITO) thin film was usually produced on quarts glass in 25–150 nm thickness by various techniques. In this research, we prepared ITO thin film on substrate of silicon wafer by sol–gel method, measured by step profiler to be 20 nm. By reducing the organic
components in the samples, and through investigation of TG/DTA/DTG, it is concluded that the ITO film reached the peak of recrystallization at 533 °C. The ITO thin film had the spectral responsivity of 5.6 A/W and strongest laser absorbance both at 450 nm wavelength, which can be concluded
through photocurrent response and I–V curing.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
Energy Storage Materials
·
2020
·
IF 16.28
Muhammad Waqas,Yupei Han,Dongjiang Chen,Shamshad Ali,Cheng Zhen,Chao Feng,Botao Yuan,Jiecai Han,Weidong He
With high energy density and low cost, lithium sulfur (Li–S) batteries own the potential to be next-generation electrochemical storage/conversion devices. However, their cyclic stability and life span are considerably impaired by polysulfide shuttling and self-discharge. Here, we design a microfiber glass filter-molybdenum disulfide/carbon-titanium nitride (μFGF-MoS 2 /C–TiN) interlayer for suppressing the shuttle of polysulfides and self-discharge of Li–S batteries. TiN in the interlayer molecularly captures high-order polysulfide Li 2 S 8 with an adsorption energy up to −6.48 eV, the largest high-order polysulfide absorption value ever reported. The μFGF-MoS 2 layer mechanically seizes polysulfides with interconnected torturous mesopores by functioning as a molecular sieve . With a sulfur loading of 4.5 mg cm −2 , the Li–S batteries based on μFGF-MoS 2 /C–TiN exhibit remarkable over-1000-cycle stability with an only 0.05% capacity decay per cycle and deliver an initial discharge capacity of 1000 mAh g −1 at 1C. The self-discharge is alleviated with an insignificant 10.3% capacity loss after a 30-day rest.
研究领域:
材料科学
·
电化学能存储
✓ 已验证
DOI
高影响因子
Nanoscale
·
2022
·Vol. 14
·期 11
·4234-4243
·
IF 8.307
Yancong Qiao,Hao Tang,Haidong Liu,Jinming Jian,Shourui Ji,Fei Han,Zhiyuan Liu,Ying Liu,Yuanfang Li,Tianrui Cui,Jingxuan Cai,Guangyang Gou,Bingpu Zhou,Yi Yang,Tian-Ling Ren,Jianhua Zhou
Cracks play an important role in strain sensors. However, a systematic analysis of how cracks influence the strain sensors has not been proposed. In this work, an intelligent and highly sensitive strain sensor based on indium tin oxide (ITO)/polyurethane (PU) micromesh is realized. The micromesh has good skin compatibility, water vapor permeability, and stability. Due to the color of the ITO/PU micromesh, it can be invisible on the skin. Based on the fragility of ITO, the density and resistance of cracks in the micromesh are greatly improved. Therefore, the ITO/PU micromesh strain sensor (IMSS) has an ultrahigh gauge factor (744.3). In addition, a finite element model based on four resistance layers is proposed to explain the performance of the IMSS and show the importance of high-density cracks. Compared with other strain sensors based on low-density cracks, the IMSS based on high-density cracks has larger sensitivity and better linearity. Physiological signals, such as respiration, pulse, and joint motion, can be monitored using the IMSS self-fixed on the skin. Finally, an invisible and artificial throat has been realized by combining the IMSS with a convolutional neural network algorithm. The artificial throat can translate the throat vibrations of the tester automatically with an accuracy of 86.5%. This work has great potential in health care and language function reconstruction.
研究领域:
材料科学
·
生物医学工程
·
智能传感
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Qinghua Tian,Zhangmin Hong,Jizhang Chen,Li Yang
An ideal hybrid mode for titanium dioxide (TiO 2 ) and tin dioxide (SnO 2 ) is that the SnO 2 nanoparticles locate in interspaces of 3-deminsional TiO 2 hierarchical structure constructed by one-dimensional units, in which the sizes of interspaces can be adjusted via the inverse movement among the units to smartly accommodate the huge expansion/contraction of SnO 2 anode during long-term cycling process, but its achievement is full of challenges. Herein, a smart strategy has been proposed to facilely fabricate a TiO 2 /SnO 2 /Carbon (TiO 2 /SnO 2 /C) composite with a similar nanostructure with above ideal mode for the first time, which is composed of SnO 2 /C nanoparticles located in the interspaces among quasi-TiO 2 /C nanowires . Expectedly, the as-fabricated TiO 2 /SnO 2 /C composite exhibits greatly improved lithium storage, delivering high capacities of 851.5 and 415 mAh g −1 after 400 and 700 cycles at 200 and even 1000 mA g −1 , respectively. This work may provide a new strategy for development of high performance SnO 2 -based composite anodes for lithium-ion batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Materials Futures
·
2022
·Vol. 1
·期 4
·045102
·
IF 0
Ruijia Liu,Na Li,Enyue Zhao,Jinkui Zhao,Lingxu Yang,Wenjun Wang,Huijun Liu,Chaoliu Zeng
Transition metal nitrides (TMNs), including titanium nitride (TiN), exhibit remarkable application prospects as anodes for durable high-rate lithium-ion batteries (LIBs). Regrettably, the absence of simple synthesis methods restricts their further development. Herein, a facile and low-cost molten salt synthesis strategy was proposed to prepare carbon-anchored TiN nanoparticles as an advanced anode material for LIBs with high rate capabilities. This nanosized TiN obtained is ∼5 nm in size and well-distributed onto carbon plates, which could release a reversible capacity of ∼381.5 mAh g−1 at 0.1 A g−1 after 250 cycles and ∼141.5 mAh g−1 at 1.0 A g−1 after 1000 cycles. Furthermore, it was confirmed that the conversion reaction between TiN and Li-ions happened during the electrochemical reaction process, resulting in the formation of Li3N and Ti. This unique microstructure attributed from TiN nanoparticles anchored by carbon could support the structural volume during cycling. This work highlights the method superiority of TiN prepared via a molten salt synthesis strategy as an anode for LIBs with impressive rate performances.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 37
·21378-21385
·
IF 10.733
Wei Wen,Jincheng Yao,Hua Tan,Jin-Ming Wu
Electrode materials with hollow micro/nanostructures and high electrical conductivity are important for achieving high-power supercapacitors, especially those with super-fast charging/discharging. TiN, which can be easily obtained from TiO2, is regarded as a high-power supercapacitor material. Here, we report that a nanoscale Kirkendall effect is triggered by surface branches on TiO2 nanowires, which then transform into hollow TiN nanotrees during a thermal nitridation process. The surface branches play a key role in accelerating the initial reaction, which forms a uniform, continuous surface TiN layer and induces the Kirkendall effect via surface diffusion. The hollow TiN nanotrees have a high surface area, porous structure, and high electrical conductivity. The constructed symmetric supercapacitors exhibit high areal and volumetric energy density, super-fast charge/discharge ability, and good capacitance retention up to 350 000 cycles. This work provides a new method to synthesize hollow TiN nanostructures and demonstrates their advantages in achieving high-power energy storage devices.
研究领域:
材料科学
·
纳米科技
·
电化学
·
能源存储
·
功能材料
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2024
·
IF 6.3
Ning Ma,Xiaobo Ma,Ling Ma,Xiaomeng Wang,Zhijie Cao
The high desorption temperature and sluggish kinetics of NaAlH 4 limit its applications in hydrogen storage . To address these issues, a Ni nanoparticles-loaded TiN composite catalyst with excellent thermodynamic stability and catalytic activity was constructed. The addition of 5 wt% Ni 10 @TiN reduced the initial dehydrogenation temperature of NaAlH 4 to 81 °C, and a total amount of 5.4 wt% H 2 could be released within 20 min at 170 °C. The activation energies for the two-step dehydrogenations were significantly reduced to 66.3 kJ/mol and 81.4kJ/mol, respectively, which were 43 % and 36 % lower than that of pure NaAlH 4 . Experimental results and theoretical calculations suggested that these remarkable improvements were originated from the grain refinement of NaAlH 4 and multi-fold catalytic activities of Ni 10 @TiN catalyst like providing catalytic active sites, facilitating the breaking of Al-H and H-H bonds, and increasing hydrogen diffusion channels. These findings may offer new ideas for designing high-efficiency catalysts for solid-state hydrogen storage materials.
研究领域:
材料科学
·
氢存储
·
催化
·
纳米材料
·
储能
✓ 已验证
DOI
高影响因子
Journal of the American Chemical Society
·
2022
·
IF 16.383
Xinyu Li,Yan Guan,Xiaotong Li,Yongping Fu
Two-dimensional (2D) metal halide perovskites are promising tunable semiconductors. Previous studies have focused on Pb-based structures, whereas the multilayered Sn- and Ge-based analogues are largely unexplored, even though they potentially exhibit more diverse structural chemistry and properties associated with the more polarizable ns2 lone-pair electrons. Herein, we report the synthesis and structures of 2D tin iodide perovskites (BA)2(A)Sn2I7, where BA = n-butylammonium and A = methylammonium, formamidinium, dimethylammonium, guanidinium, or acetamidinium, and those of 2D germanium iodide perovskites (BA)2(A)Ge2I7, where A = methylammonium or formamidinium. By comparing these structures along with their Pb counterparts, we establish correlations between the effect of group IV-cation’s lone-pair stereochemical activity on the perovskite crystal structures and the resulting semiconducting properties such as bandgaps and carrier–phonon interactions and nonlinear optical properties. We find that the strength of carrier–phonon interaction increases with increasing lone-pair activity, leading to a more prominent photoluminescence tail on the low-energy side. Moreover, (BA)2(A)Ge2I7 exhibit strong second harmonic generation with second-order nonlinear coefficients of ∼10 pm V–1 that are at least 10 times those of Sn counterparts and 100 times those of Pb counterparts. We also report the third-order two-photon absorption coefficients of (BA)2(A)Sn2I7 to be ∼10 cm MW–1, which are one order of magnitude larger than those of the Pb counterparts and traditional inorganic semiconductors. These results not only highlight the role of lone-pair activity in linking the compositions and physical properties of 2D halide perovskites but also demonstrate 2D tin and germanium iodide perovskites as promising lead-free alternatives for nonlinear optoelectronic devices.
研究领域:
材料科学
·
光电技术
·
半导体物理
✓ 已验证
DOI
高影响因子
ACS Sensors
·
2026
·
IF 10.9
Jiale Liu,Yuqing Gu,Tengbo Lv,Qian Cheng,Fei Li,Xin Li,Xiaoli Wang,Chuanyu Han
Liver cancer (LC) remains one of the most prevalent and lethal malignancies worldwide. Alpha-fetoprotein (AFP) and miRNA 106a are both robust biomarkers of LC, and the multiplexed detection of these two biomarkers can significantly improve the diagnostic accuracy over single-analyte strategies. Here, we present an extended gate indium–tin–zinc-oxide (ITZO) thin-film transistor (TFT) biosensor array that enables label-free, multiplexed detection of AFP and miRNA 106a, achieving a linear dynamic range spanning nine orders of magnitude and ultralow detection limits of 83.37 ag/mL and 35.48 aM, respectively. The extended gate physically decouples the biorecognition interface from the ITZO channel, preserving high transconductance while preventing ionic and biological degradation of the biosensor, greatly enhancing the biosensor’s long-term stability with >98% of its initial sensitivity remained after one month of refrigerated storage. As a consequence, clinical detection results obtained from the biosensor array platform revealed that a dual-biomarker “OR” logic achieves 100% diagnostic accuracy (AUC = 1.00) when analyzing undiluted serum from LC patients and healthy donors. Therefore, the proposed platform offers a miniaturized, low-cost alternative for early LC screening and timely therapeutic intervention.
✓ 已验证
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124172
·
IF 7.5
Wei Han,Xian Yue,Lu Liu,Fuzhi Li,Xianbo Yu,Hu Chen,Xiaoxue Xi,Shuao Xie,Zhongbo Hu,Huaxin Li,Junhui Xiang
Excessive carbon dioxide emissions and the energy crisis trigger ongoing challenges. To address these issues, the electrochemical carbon dioxide reduction reaction (CO 2 RR) has emerged as a sustainable pathway for converting CO 2 into valuable chemicals. Among various products, formic acid has attracted widespread attention due to its broad industrial application prospects. Although tin-based catalysts are cost-effective and accessible, they still face challenges including active site aggregation and insufficient long-term stability. In this study, mixed-valence SnO x was supported on bacterial cellulose (BC) surface via an in-situ impregnation method. Sn/SnO/Sn 2 O 3 /SnO 2 @CNFs, Sn/Sn 2 O 3 /SnO 2 @CNFs, and Sn/SnO 2 @CNFs catalysts with different phase composition and oxygen vacancies (OVs) concentrations were obtained by simply changing the heat treatment temperature (400∼600°C). In situ Fourier transform infrared spectroscopy (FTIR) confirmed that synergistic interaction between mixed-valence SnOx species and the CNFs facilitated adsorption and stabilization of the key intermediate *OCHO to drive CO 2 conversion to formate. Density functional theory (DFT) calculations proved that Sn/Sn 2 O 3 /SnO 2 @CNFs catalyst with moderate OVs concentrations exhibits stronger adsorption capacity for *OCHO. Systematic characterization demonstrated that the CNFs not only provide a high specific surface area (871.71 m 2 ·g −1 ) to promote active site exposure but also stabilize the oxidation states of SnO x . Especially, the Sn/Sn 2 O 3 /SnO 2 @CNFs catalyst prepared at 500°C exhibited the highest Faradaic efficiency for formate (93.53%) while maintaining persistent stability for 60 h. In summary, the synergistic effect between porous CNFs and Sn/Sn 2 O 3 /SnO 2 with moderate OVs concentrations plays a key role in promoting CO 2 conversion to formate. This work provides a promising approach for the rational design of efficient and stable tin-based CO₂RR catalysts toward formate production.
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产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Bosheng Zhang,Na Zhou,Panchao Zhao,Junqiu Guo,Hemu Pi,Yuanbin Qin
W induces flattened Ir-WO x (W) nanoparticles for high Ir utilization. • Alloy-heterojunctional composite interfaces tune Ir electronic structure for OER. • W optimizes OER intermediates and restrains Ir agglomeration to amplify Ir catalytic activity. • TiN-supported Ir-WO x flattened nanoparticles synthesized through a green approach. • Enhanced acidic OER activity vs commercial IrO 2 . Reducing the Ir loading in anode reaction catalysts is crucial for the scalable commercialization of proton exchange membrane (PEM) water electrolysis. Herein, W-induced formation of Ir-WO x (W) flattened nanoparticles with alloy-heterojunctional composite structure anchored on TiN support (Ir-WO x (W)/TiN) catalyst via a spray drying and heat treatment process is designed. For Ir-WO x (W)/TiN catalyst, TiN serves as the catalyst support, effectively achieving high dispersion of Ir as nanostructure on the support and enhancing the atomic utilization of Ir. W induces the formation of Ir-WO x (W) flattened nanoparticles to further improve atomic utilization efficiency of Ir and optimize its surface electronic structure during the oxygen evolution reaction (OER). Meanwhile, alloy-heterojunctional composite interfaces formed between Ir-WO x (W) and Ir-Ti can further optimize the adsorption/desorption capability of Ir toward oxygen-intermediates, lowering the energy barrier of the rate-determining step in the OER and enhancing the overall activity of catalyst, which is confirmed by a DFT calculation. The Ir-WO x (W)/TiN catalytic material demonstrates excellent OER performance, achieving overpotential of 221 mV and 296 mV at current densities of 10 mA·cm −2 and 50 mA·cm −2 in 0.5 M H 2 SO 4 solution, respectively, with a low Ir loading of 0.15 mg·cm −2 . Furthermore, this work demonstrates a green and scalable synthetic route without wastewater generation.
✓ 已验证
DOI
高影响因子
Nanoscale
·
2026
·
IF 5.2
Shuai Wang,Liu Chang,Yue Qin,Zepu Chen,Qingfa Wang
The conversion of CO 2 into high-value chemicals using renewable electricity holds great application prospects. However, improving the selectivity toward C 2 products remains a challenge. Here, we report a Sn atomically dispersed in Cu2O matrix (Sn-Cu2O), synthesized via a facile one-pot method. The as-prepared catalyst Sn-Cu2O-0.025 displays a Faradaic efficiency of 73.2% for C2 products with ethanol accounting for 32.1% at the current density of 200 mA cm-2 . Based on in-situ FT-IR characterization, the introduction of Sn promotes the activation of CO2 to *CO and enhances the coverage of *CO. As a result, the C-C coupling accelerates the formation process of key intermediates *OCCOH and enhances the selectivity of the C2 products. This study provides insights
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DOI
PubMed
高影响因子
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