ACS Applied Nano Materials
·
2024
·
IF 5.3
Zhiyong Ouyang,Aoqi You,Bai Zheng,Weilu Zheng,Honghua Zhang
Lithium–sulfur (Li–S) batteries have been considered as one of the effective alternative energy systems to commercial lithium-ion batteries (LIBs) due to their high theoretical energy density (2600 Wh kg–1), high theoretical specific capacity (1675 mAh g–1), low cost, and abundant reserves of sulfur. However, intrinsic challenges, such as severe shuttle effect, low conductivity, and significant volume expansion, hinder their large-scale application. In this study, a novel composite (CNT/FP-N, Se), which in situ grown with carbon nanotubes (CNTs) and doped with N, Se elements, has been synthesized by utilizing commercial ferric phosphate (FP) as a precursor. Benefitting from the synergistic effects of abundant adsorption active sites of CNTs and the catalytic effects of N and Se, the shuttle effect of lithium polysulfides (LPS) can be effectively inhibited, leading to an enhancement of Li–S batteries when the CNT/FP-N, Se is utilized as separator modifier. The charge/discharge platforms can be well maintained from 0.1 to 5 C, and a capacity of 617 mAh g–1 at 5 C can be acquired. Notably, an initial capacity of 990.7 mAh g–1 at 1 C can be obtained, with a retention of 711.3 mAh g–1 after 500 cycles, corresponding to a capacity loss rate of only 0.056% per cycle. This work provides a feasible scheme for FP application in next-generation low-cost energy systems.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2022
·
IF 6.371
Qing Zhou,Meinan Yan,Yuzhou Sun,Yujiao Ma,Zihan Zhang,Haoyu Xu,Xiaoyun Teng,Chao Gao,Wei Yu
In this paper, we reported a novel precursor solution for the preparation of Cu 2 ZnSn(S,Se) 4 (CZTSSe) film. Large-grain monolayer CZTSSe film can be obtained by using the precursor solution. The influence of selenization temperature on the properties of CZTSSe films and solar cells were investigated. We found the monolayer CZTSSe film can be prepared with the selenization temperature as low as 510 °C. While an increased selenization temperature was used, the size of the crystalline grains in CZTSSe film increased significantly, but the decomposition of CZTSSe material got more serious. As the increase of the selenization temperature, increased short-circuit current (J SC ) can be achieved for the fabricated solar cell, which could be caused by the improved crystallinity of CZTSSe layer and the enlarged depletion width of solar cell (as much as 391 nm). On the other hand, the open-circuit voltage (V OC) decreased as the increase of selenization temperature, which may relate with the decomposition of CZTSSe material. The best solar cell achieved the efficiency of 11.4% (active area), which was based on CZTSSe film with the selenization temperature of 510 °C.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Siqi Li,Wangfeng Cai,Xiao Ma,Jiahui Zhu,Yan Wang
In this paper, bimetallic Co-Ni selenide@polypyrrole core–shell nanotubes on nickel foam (CoNi0.4Se@PPy/NF) were synthesized according to a two-step hydrothermal reaction and an electrodeposition process. It was developed to be an electrode material for supercapacitors. This economical CoNi 0.4 Se @PPy/NF electrode was highly conductive, and its specific areal capacitance at 5 mA cm -2 was as high as 13.27 F cm -2 . In addition, it showed good cycling stability. After 1000 cycles at 30 mA cm -2 , CoNi 0.4 Se@PPy/NF retained 92.63% of its capacitance. It was suggested that its superior electrochemical properties were due to its great specific capacitance as well as to the electrical conductivities obtained from the synergy between selenide and polypyrrole and the unique structure of the core–shell and nanotubes. The above results showed that the CoNi0.4Se@PPy core−shell nanotube composite material was a promising electrode material for supercapacitors.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Chemosensors
·
2019
·Vol. 7
·期 4
·47
·
IF 0
Shiqi Jiang,Zifan Lu,Tiantian Su,Yanting Feng,Chunxia Zhou,Pengzhi Hong,Shengli Sun,Chengyong Li
Cadmium selenide (CdSe) quantum dots (QDs) were synthesized by water phase synthesis method using 3-mercaptopropionic acid (3-MPA) as a stabilizer, and they were applied to the detection of copper ions (Cu2+). The results showed that CdSe QDs have excellent selectivity and sensitivity toward Cu2+. The fluorescence intensity of CdSe QDs decreased with the increase of Cu2+concentration. The linear range was from 30 nM to 3 μM, and the detection limit was 30 nM. Furthermore, CdSe QDs were used for detecting the concentration of Cu2+in oysters. The content of Cu2+was 40.91 mg/kg, which was close to the one measured via flame atomic absorption spectrometry (FAAS), and the relative error was 1.81%. Therefore, CdSe QDs have a wide application prospect in the rapid detection of copper ions in food.
研究领域:
分析化学
·
纳米技术
·
环境科学
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食品安全
✓ 已验证
DOI
WATER SCIENCE AND TECHNOLOGY
·
2020
·Vol. 81
·期 1
·91-101
·
IF 1.638
Yan Yi,Yang Shuai,Jiang Feng,Luo Yuwei,Gao Hejun,Liao Yunwen
The sheet-like adsorbent of the eggshell wastes was prepared by the thermal hydrolysis method. The structure of the adsorbent was characterized by scanning electron microscope, Brunauer-Emmett-Teller, X-ray diffraction, transmission electron microscope, and X-ray photoelectron spectrometer. The adsorption capacity was investigated in a Pb 2+ solution. The effects of initial pH, salt concentration, contact time, and adsorbate concentration on the adsorption of lead ions were investigated in detail. The morphology of the adsorbent was sheet-like microspheres. Zinc selenide/zinc oxide could be uniformly loaded onto the eggshell waste surface, which could effectively enhance the specific surface area of the eggshell wastes. The adsorption kinetics and isotherm followed the pseudo-second-order and Langmuir–Freundlich isotherm model, respectively. The synthesized adsorbent showed a maximum lead adsorption capacity of 1,428.78 mg/g at room temperature. Ion-exchange was the main adsorption mechanism.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Peng Zhao,Muqing Cao,Cheng Liu,Yiheng Dai,Yizheng Tan,Shaobo Ji,Huaping Xu
The development of underwater remote stimulus-responsive self-healing polymer materials for applications in inaccessible and urgent situations is very challenging because water can readily disturb traditional noncovalent bonds and absorb heat, UV light, IR light, and electromagnetic wave energy at the wave band of micrometers and millimeters. Herein, visible-light-responsive diselenide bonds are employed as the healing moieties to produce a water-enhanced and remote self-healing elastomer triggered by a blue laser, which possesses excellent underwater transmission capability. During healing, the strain at break reaches ∼200% in 5 min and its toughness almost fully recovers within 1 h, which is estimated to be the fastest reported to date for healing silicone elastomers with a healing efficiency above 90%. The remote underwater pipeline sealing is instantly accomplished with the diselenide-containing elastomers by a blue laser 3 m away, thereby providing a direction for future emergent healing applications.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
Journal of Chemistry
·
2013
·Vol. 2013
·期 1
·791437
·
IF 0
Lai-Jun Zhang,Fa-Yun Chen,Ji-Zao Tong,Guang-Da Chen,Hai-Jin Huang,Xing-Can Shen
Zinc selenide (ZnSe) nanocrystals were synthesized via a phosphine-free route using the highly reactive alkylamine-H 2 Se complex as selenium precursor and zinc precursors with different reactivity. The reactivity of zinc precursor was tuned by using three kinds of zinc carboxylates with different alkyl chain lengths, including zinc acetate, zinc nonanoate, and zinc stearate. The effect of the reactivity and the amount of zinc precursor on nucleation and growth of ZnSe nanocrystals were investigated by ultraviolet-visible absorption and photoluminescence spectra. Result indicates that the growth and optical property of the resulting ZnSe nanocrystals are strongly dependent on the alkyl chain length and the amount of the zinc carboxylates and both shorter alkyl chain length, and more amount of zinc carboxylate will lead to faster growth of ZnSe nanocrystals. This allows that the controlled growth and excellent optical property of high-quality ZnSe nanocrystals can be achieved by combining the different reactivity and the used amount of zinc precursor, such as by using stoichiometric and reactive Zn precursor and Se precursor or by using larger amount of more unreactive Zn precursor relative to the highly reactive alkylamine-H 2 Se complex precursor.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
APPLIED ORGANOMETALLIC CHEMISTRY
·
2021
·Vol. 35
·期 8
·e6269
·
IF 4.105
Xiaoying Wang,Biao Li,Jingjing Fan,Shanshan Tian,Xiangyang Wei
Polymer functionalized nanoparticles (NPs) have a great attention in biomedical applications owing to their unique properties like regenerative antioxidant, anti-inflammatory, auto-catalytic properties, and biocompatibility. In this current work, we demonstrated a facile synthesis of Se-CeO 2 via chemical method followed by precipitation method. The prepared Se NPs were characterized by ultraviolet–visible (UV-vis) spectroscopy, and the size and morphology of the NPs were analysed using transmission electron microscopy (TEM). Meanwhile, Se-CeO 2 NPs loaded on polylactic-co-glycolic acid (PLGA) nanocarrier were characterised by Fourier transform infrared (FT-IR), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), TEM, and energy dispersive X-ray analysis (EDAX) mapping techniques. The morphological and spectroscopic investigations of prepared nanomaterials have exhibited favourable morphological structure and chemical interactions with respective polymeric molecules, which established that nanovesicle suitability for the SCI functional recovery. We first investigated Se nanoformulated CeO 2 material for the potential healing of in vitro spinal cord study. Our results demonstrated that preparation of NPs loaded PLGA nanocarrier has provide effective spinal cord regeneration and imply that it was explored that promising nanocarrier in the SCI treatment. Se-NPs encapsulated CeO 2 nanostructures administrations for SCI therapies have greatly suppressed oxidative stress and induced anti-inflammatory action, which leads to prospective therapeutic benefits of spinal cord regeneration. These investigative results demonstrate that Se-CeO 2 NPs with PLGA carrier could have great attention for effecient functional recovery treatment and care for spinal cord injury.
研究领域:
生物医学工程
·
纳米医学
·
再生医学
✓ 已验证
DOI
高影响因子
Nano Energy
·
2020
·
IF 16.602
Na Zhao,Jian Qin,Lujia Chu,Linzhe Wang,Dan Xu,Xiujuan Wang,Huijuan Yang,Jiujun Zhang,XiFei Li
The development of potassium ion batteries is restricted by the intrinsic large ion radius, resulting in dramatic volume change of electrodes and slow faradic reaction in kinetics. High requirements are proposed for the structure design of anodes. In this work, Se coating-Sb nanocrystalls-three dimensional interconnected carbon networks (3D Se@Sb@C) heterogeneous structure was prepared by a low-temperature template-assisted CVD method. The network and sandwich structure can not only shorten the solid-state diffusion path of K + , but also alleviate the volume change of Sb. Moreover, the hetero interface between Se and Sb can form chemical bonding and further generate heterogeneous junctions in electrochemical reactions, providing more electron states at the Fermi energy level and reducing the ionic diffusion barrier of K + . Benefiting from it, the 3D Se@Sb@C electrode possess an optimized energy storage mechanism and exhibits an outstanding rate performance and an ultra-long lifespan of more than 5000 cycles with 87% of capacity retention, which is rarely reported for PIB anodes. It reveals the important role of heterogeneous structure in potassium storage, which can inspire other researchers to achieve superior electrochemical performance by interface engineering for electrode materials.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
INORGANIC CHEMISTRY
·
2022
·
IF 5.436
Xin Fan,Shan Gao,Qi Chen,Dayi Zhou,Lijie Chang,Yao Wang,Yuewen Zhang,Le Deng,Hongan Ma,Xiaopeng Jia
In recent years, skutterudite filled with electronegative elements (S, Se, Cl, Br) has attracted the extensive attention of researchers. By doping electron donors (Pb, Ni, or Te, S, Se) at the Co or Sb sites, the electronegative elements can form thermodynamically stable compounds in the intrinsic pores of the skutterudite, substantially expanding the research scope of skutterudite. In this study, S0.05Co4Sb11.3Te0.6Se0.1 skutterudite was synthesized at high pressure and high temperature, with a pressure range of 2.0–3.5 GPa. The phase composition, micro-morphology, and electrical and thermal transport properties were systematically characterized. The micromorphology analysis shows that the introduction of S element and substituting Te and Se at the Sb sites inhibit the grain growth in a suitable high-pressure environment. Substantial differences are observed in the directions of the lattice stripes in the samples, and rich grain boundaries and many lattice distortions and dislocation defects occur. The carrier concentration can be optimized by filling the voids of the skutterudite with a few S atoms, and the thermoelectric properties can be optimized by scattering phonons through resonance scattering and defect scattering. The samples synthesized at a pressure of 3.0 GPa and a temperature of 900 K have a maximum power factor of 23.85 × 10–4 W m–1 K–2 and a maximum zT value of 1.30 at a test temperature of 773 K.
研究领域:
材料科学
·
热电材料
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Ding Wen,Lile Dong,Kai Li,Yechao Du,Ruiping Deng,Jing Feng,Hongjie Zhang,Daguang Wang
Despite bismuth-based energy conversion nanomaterials having attracted extensive attention for nanomedicine, the nanomaterials suffer from major shortcomings including low tumor accumulation, long internal retention time, and undesirable photothermal conversion efficiency (PCE). To combat these challenges, bovine serum albumin and folic acid co-modified Bi2Se3 nanomedicine with rich selenium vacancies (abbreviated as VSe-BS) was fabricated for the second near-infrared (NIR-II) light-triggered photonic hyperthermia. More importantly, selenium vacancies on the crystal planes (0 1 5) and (0 1 11) of VSe-BS with similar formation energies could be distinctively observed via aberration-corrected scanning transmission electron microscopy images. The defect engineering endows VSe-BS with enhanced conductivity, making VSe-BS possess outstanding PCE (54.1%) in the NIR-II biowindow and desirable photoacoustic imaging performance. Tumor ablation studies indicate that VSe-BS possesses satisfactory therapeutic outcomes triggered by NIR-II light. These findings give rise to inspiration for further broadening the biological applications of defect engineering bismuth-based nanomaterials.
研究领域:
纳米医学
·
生物材料学
·
肿瘤治疗
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Guansheng Ma,Kaili Zhang,Yuefeng Yan,Boshi Gao,Jun Weng,Guangyu Qin,Seeram Ramakrishna,Xiaoxiao Huang
The unique layered structure and adjustable band gap of transition metal dichalcogenides (TMDs) have prompted extensive investigations into their potential for electromagnetic wave absorption (EWA). Vanadium selenide (VSe 2 ), a notable representative of TMDs, has a larger interlayer spacing (6.1 Å) and higher conductivity (1 × 10 -3 S/m), which has high advantageous in EWA applications. However, the existing research on the use of VSe 2 for EWA remains relatively limited. Herein, a flower-branch-like carbon microtube/vanadium selenide (CMT/VSe 2 ) composite was successfully synthesized via a facile solvothermal method. This composite material is composed of flower-like VSe 2 nanostructures integrated with carbon microtubes. Importantly, the EWA properties of this composite can be effectively tailored by adjusting the concentration of the VSe 2 precursor. The CMT/VSe 2 composite exhibited a remarkable minimum reflection loss (RL) of −60.54 dB in the Ku-band, with a matching thickness of 2.27 mm. Moreover, the effective absorption bandwidth reached 6.38 GHz. These results demonstrate the great potential of this CMT/VSe 2 composite material as a highly efficient EWA material. Furthermore, this work broadens the application of two-dimensional TMDs in the area of EWA.
研究领域:
材料科学
·
电磁学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）