SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2025
·
IF 6.3
Mengzhu Li,Yanqing Wang,Zhiping Fang,Dongchen Guo,Min Fan,Hui Dai,Fuling Guo,Wangchao Chen,Chengwu Shi,Peng Cui
Antimony selenosulfide (Sb 2 (S,Se) 3 ) demonstrates strong potential for thin-film solar cells owing to its tunable bandgap, low toxicity, and high stability. However, conventional fabrication methods often yield films with small grain sizes and random orientations, which hinder device performance. Herein, an in situ polymerization-assisted grain growth (iPAGG) strategy was developed, specifically enabling the oriented growth of Sb 2 (S,Se) 3 on Cd-free TiO 2 substrates, by introducing acrylic acid (AA) into the chemical bath deposition process. The carboxylate groups from AA coordinate with Sb 3+ ions, promoting oriented growth of Sb 2 (S,Se) 3 film. This approach yields films with enlarged grains, reduced defect densities, and strengthened [ hk 1] preferred orientation. As a result, Cd-free Sb 2 (S,Se) 3 solar cells employing the optimized AA concentration yielded a champion power conversion efficiency (PCE) of 7.24%, outperforming the control device (6.70%). Further interfacial modification with poly (acrylic acid)-modified SnO 2 boosts the PCE to 7.55%. This work offers an effective way toward the fabrication of high-performance and environmentally friendly Sb 2 (S,Se) 3 photovoltaics.
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DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2025
·
IF 7.7
Jiaqi Yang,Yu Yang,Kexuan Gao,Nigel J.D. Graham,Li-an Hou
Regulation of the types and content of reactive oxygen species (ROS) in advanced oxidation processes (AOPs) is regarded as a challenging task. Herein, the features of sulfur-vacancy (Sv) and nitrogen-vacancy (Nv), and cobalt (Co)/molybdenum (Mo)-bimetallic constituents were simultaneously incorporated into a novel Co-N@MoS 2 -COOH catalyst through a simple hydrothermal calcination method. The adsorption of oxygen (O 2 ) and peroxymonosulfate (PMS) was promoted by Sv/Nv, whereby the generation of superoxide radical (O 2 · - ) and singlet oxygen ( 1 O 2 ) species was induced, and the energy barrier for the formation of high-valent cobalt-oxo species (Co(IV)=O) was reduced. The decomposition of PMS was enhanced by a bimetal (Mo/Co) electronic pump and the O 2 · - , 1 O 2 , and Co(IV)=O active species degraded tetracycline (TC) together to achieve an efficient degradation rate (initial K obs = 0.490 min -1 ). The degradation intermediates and potential degradation pathways were identified, and the leaching of Co was within the acceptable range of environmental standards. Incorporation of the catalyst into a microfilter membrane achieved a 100% degradation of TC at an ultra-high membrane flux (1803.4 LMH/bar). This study provided new insights into the types of ROS regulated by bi-vacancy and bimetallic catalysts in AOP systems, with the intention of promoting a more sustainable and resource-efficient treatment technology.
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DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2019
·
IF 6.97
Yang Bai,Yanbiao Zhao,Weidong Li,Linghui Meng,Yongping Bai,Guorong Chen
Solid sulfide electrolyte has been researched for several years, and a high ionic conductivity has been acquired. However, it is difficult to apply in industrial manufacturing partly because the raw materials, such as SiS2, GeS2, P2S5, et al., have strict preparing conditions and are sensitive to water and oxygen in the air. Herein, we report a new method to produce solid sulfide electrolytes Li9.54Si1.74P1.44S11.7X0.3 (LSiPSX) (X = F, Cl, Br, I), that is, using elementary substances Si, P, and S as the starting raw materials, which not only is a promising way to ease the harsh storage conditions of the SiS2 and P2S5 as starting raw materials but also provides a feasible choice for the preparation of solid sulfide electrolyte. The conductivity of solid sulfide electrolyte is further adjusted by controlling the particle size of raw material silicon and the different halogen doping. As a result, the Li9.54Si1.74P1.44S11.7I0.3 releases the highest ionic conductivity of 1.35 mS/cm at room temperature and a wide electrochemical window up to 9 V versus Li/Li+ which is prepared from the 3 nm particle size Si and I doping. The all-solid-state lithium–sulfur battery (ASSLSB) is constructed with LSiPSI and with a good performance. Our study demonstrates the possibility of preparing the LGPS crystal type solid sulfide electrolytes by using elementary substances.
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高影响因子
NEW JOURNAL OF CHEMISTRY
·
2018
·Vol. 42
·期 5
·3350-3355
·
IF 3.201
Ailijiang Abudurusuli,Kui Wu,Shilie Pan
Four new quaternary chalcogenides A2Ba7Sn4Q16 (A = Li, Na; Q = S, Se) were successfully synthesized in vacuum-sealed silica tubes for the first time. All of them crystallize in the noncentrosymmetric (NCS) cubic I3d space group with the cell parameters ranging from 14.807 to 15.4163 Å and Z = 4, respectively. Interestingly, their isostructures are different from the structural transformations (from tetragonal to trigonal) appearing in previously reported Na2BaSnQ4 compounds. As observed in their structures, (Na/Ba)Q4 and SnQ4 units alternately connect with each other by sharing corners to build a three-dimensional (3D) framework structure with charge-balanced Ba cations located within tunnels, which is different from the observation that the Na atoms located inside the tunnels formed by the interconnection of the BaS8 and SnS4 units in Na2BaSnS4. Optical properties (diffuse-reflection, IR, and Raman spectra) were also systematically studied and the results indicate that their optical bandgaps are in the range from 1.75 to 2.5 eV. Moreover, the second harmonic generation (SHG) responses of the title compounds were also measured to be about 0.1–0.5 times higher than that of benchmark AgGaS2 under 2.09 μm radiation.
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高影响因子
Chinese Physics B
·
2018
·Vol. 27
·期 1
·016402
·
IF 1.321
Xue Min,Jiangjian Shi,Linbao Guo,Qing Yu,Pengpeng Zhang,Qingwen Tian,Dongmei Li,Yanhong Luo,Huijue Wu,Qingbo Meng,Sixin Wu
The Zn/Sn ratio in Cu2ZnSn(S, Se)4 (CZTSSe) films has been regulated to control the composition-related phase, defect, and photoelectric properties for high performance kesterite solar cells. It is found that the increase in the Zn/Sn ratio can slightly narrow the energy band gap to extend the light absorption range and improve the photocurrent. Optimal Zn/Sn ratio of 1.39 in CZTSSe film is obtained with the least secondary phase, the lowest defect density, and the longest charge recombination lifetime. Up to 10.1% photoelectric conversion efficiency has been achieved by this composition regulation.
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高影响因子
LUMINESCENCE
·
2015
·Vol. 30
·期 6
·835-841
·
IF 1.518
Zhong-Xia Wang,Ai-Ling Wang,Xiao-Yan Wei,Yan-Rong Qu,Bin Yue,Jie Kang,Hai-Bin Chu,Yong-Liang Zhao
Two complexes of Tb 3+ , Gd 3+ /Tb 3+ and one heteronuclear crystal Gd 3+ /Tb 3+ with phenoxyacetic acid (HPOA) and 2,4,6-tris-(2-pyridyl)- s –triazine (TPTZ) have been synthesized. Elemental analysis, rare earth coordination titration, inductively coupled plasma atomic emission spectrometry (ICP-AES) and thermogravimetric analysis-differential scanning calorimetry (TG-DSC) analysis show that the two complexes are Tb 2 (POA) 6 (TPTZ) 2 ·6H 2 O and TbGd(POA) 6 (TPTZ) 2 ·6H 2 O, respectively. The crystal structure of TbGd(POA) 6 (TPTZ) 2 ·2CH 3 OH was determined using single-crystal X-ray diffraction. The monocrystal belongs to the triclinic system with the P-1 space group. In particular, each metal ion is coordinately bonded to three nitrogen atoms of one TPTZ and seven oxygen atoms of three phenoxyacetic ions. Furthermore, there exist two coordinate forms between C 6 H 5 OCH 2 COO – and the metal ions in the crystal. One is a chelating bidentate, the other is chelating and bridge coordinating. Fluorescence determination shows that the two complexes possess strong fluorescence emissions. Furthermore, the fluorescence intensity of the Gd 3+ /Tb 3+ complex is much stronger than that of the undoped complex, which may result from a decrease in the concentration quench of Tb 3+ ions, and intramolecular energy transfer from the ligands coordinated with Gd 3+ ions to Tb 3+ ions. Copyright © 2015 John Wiley & Sons, Ltd.
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高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2023
·
IF 4.7
Fanghui Wang,Jiajun Wan,Jie Liu,Rongfang Wang,Lei Wang
To achieve practical high energy density of Li-S battery, it is crucial to construct high-loading sulfur electrodes. However, the poor mechanical stability and severe shuttle effect of high-loading sulfur cathodes during cycling limit the cycling stability. Herein, a mechanically robust network binder with strong affinity towards polysulfides has been designed to stabilize the high-loading sulfur electrode. Lithium polysilicate (LSO) possesses abundant strong polar Si-O and Si = O bonds, which not only can effectively adsorb polysulfides but also firmly connect tamarind polysaccharide gum (TPG) biopolymer chains. As a result, the c-LSO-TPG binder can efficiently maintain the integrity of high-loading sulfur cathode and suppress the polysulfide shuttling during cycling. In particular, under a high sulfur loading of 5.4 mg cm −2 , the sulfur electrode can run 200 cycles steadily, delivering an areal capacity of 2.7 mAh cm −2 . This provides a new avenue for the research and development of robust binders for high-loading and long-lifespan Li-S batteries.
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高影响因子
ACS Nano
·
2019
·
IF 13.903
Yuanjian Li,Chong Wang,Wenyu Wang,Alex Yong Sheng Eng,Mintao Wan,Lin Fu,Eryang Mao,Guocheng Li,Jiang Tang,Zhi Wei Seh,Yongming Sun
Rechargeable lithium–sulfur batteries have attracted tremendous scientific attention owing to their high energy density. However, their practical application is greatly hindered by the notorious shuttling of soluble lithium polysulfide (LPS) intermediates with sluggish redox reactions and uncontrolled precipitation behavior. Herein, we report a semiliquid cathode composed of an active LPS solution/carbon nanofiber (CNF) composite layer, capped with a carbon nanotube (CNT) thin film decorated with metallic Mo nanoclusters that regulate the electrochemical redox reactions of LPS. The trace amount (0.05 mg cm–2) of metallic Mo on the CNT film provides sufficient capturing centers for the chemical immobilization of LPS. Together with physical blocking of LPS by the compact CNT film, free diffusion of LPS is significantly restrained and the self-discharge behavior of the Li–S cell is thus effectively suppressed. Importantly, the metallic Mo nanoclusters enable fast catalytic conversion of LPS and regular deposition of lithium sulfide. As a result, the engineered cathode exhibits a high active sulfur utilization (1401 mAh g–1 at 0.1 C), stable cycling (500 cycles at 1 C with 0.06% decay per cycle), high rate performance (694 mAh g–1 at 5 C), and low self-discharge rate (3% after 72 h of rest). Moreover, a high reversible areal capacity of 4.75 mAh cm–2 is maintained after 100 cycles at 0.2 C for a cathode with a high sulfur loading of 7.64 mg cm–2. This work provides significant insight into the structural and materials design of an advanced sulfur-based cathode that effectively regulates the electrochemical reactions of sulfur species in high-energy Li–S batteries.
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高影响因子
ACS Applied Materials & Interfaces
·
2016
·
IF 7.145
Chao-Ying Fan,Hai-Yan Yuan,Huan-Huan Li,Hai-Feng Wang,Wen-Liang Li,Hai-Zhu Sun,Xing-Long Wu,Jing-Ping Zhang
In this work, the lightweight and scalable organic macromolecule graphitic carbon nitride (g-C3N4) with enriched polysulfide adsorption sites of pyridinic-N was introduced to achieve the effective functionalization of separator at the molecular level. This simple method overcomes the difficulty of low doping content as well as the existence of an uncontrolled form of nitrogen heteroatom in the final product. Besides the conventional pyridinic–N-Li bond formed in the vacancies of g-C3N4, the C–S bond was interestingly observed between g-C3N4 and Li2S, which endowed g-C3N4 with an inherent adsorption capacity for polysulfides. In addition, the microsized g-C3N4 provided the coating layer with good mechanical strength to guarantee its restriction function for polysulfides during long cycling. As a result, an excellent reversible capacity of 840 mA h g–1 was retained at 0.5 C after 400 cycles for a pure sulfur electrode, much better than that of the cell with an innocent carbon-coated separator. Even at a current density of 1 C, the cell still delivered a stable capacity of 732.7 mA h g–1 after 500 cycles. Moreover, when further increasing the sulfur loading to 5 mg cm–2, an excellent specific capacity of 1134.7 mA h g–1 was acquired with the stable cycle stability, ensuring a high areal capacity of 5.11 mA h cm–2. Besides the intrinsic adsorption ability for polysulfides, g-C3N4 is nontoxic and mass produced. Therefore, a scalable separator decorated with g-C3N4 and a commercial sulfur cathode promises high energy density for the practical application of Li–S batteries.
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高影响因子
CEMENT & CONCRETE COMPOSITES
·
2022
·
IF 9.93
Xing Ming,Qing Liu,Miaomiao Wang,Yongqing Cai,Binmeng Chen,Zongjin Li
Chloride-induced corrosion in reinforced concrete is a primary durability issue that causes large economic loss every year. To improve the intrinsic chloride binding capacity and realize a favorable corrosion protection of cement-based materials are thus crucial to prolong the service life of concrete structures. Here, alumina nano particles (ANPs) were incorporated to improve the chloride binding capacity of cement pastes in chloride solutions and the anti-corrosion performance of mortars under accelerated corrosion process. The ANPs facilitated the formation of alumino-ferrite-mono (AFm)-type phases, thereby improved the content of chemically bound chlorides. Solution calcium (Ca) ions benefited the chloride captured by calcium-(alumino-)silicate-hydrates (C-(A-)S-H) in the assistance of ANPs, especially at high initial chloride concentrations , and further evoked a pH-related chloride binding response. Moreover, the enhanced corrosion resistance was finally realized by incorporating appropriate amount of ANPs because of the filling and chemical effects induced low permeability of mortars. In general, the ANPs possess dual functions in the aspects of chloride binding and corrosion inhibition . These findings are expected to advance the design of high-durable cement-based materials serviced in the marine environment.
研究领域:
建筑材料
·
土木工程材料
·
腐蚀科学
·
纳米材料应用
·
混凝土耐久性
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高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2025
·Vol. 36
·期 30
·1-21
·
IF 2.8
Yang Minjie,Zou Congyang,Ji Yufeng,Liu Ruijie,Xu Ying
A novel MIL-101(Fe)/Bi₂S₃ Z-scheme heterojunction with a metal–organic framework (MOF) structure was synthesized via a solvothermal method. Compared with pristine MIL-101(Fe) and pristine Bi₂S₃, this composite exhibits a significant breakthrough in degradation performance toward rhodamine B (RhB) and tetracycline hydrochloride (TCH). Specifically, it achieves a degradation efficiency of 95.7% for 20 mg/L TCH within 120 min and 98.6% for 40 mg/L RhB within 90 min.Characterizations including X-ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet–visible diffuse reflectance spectroscopy (UV–Vis DRS), and electrochemical impedance spectroscopy (EIS) confirm that the MOF structure of MIL-101(Fe) provides a stable support matrix for Bi₂S₃. Moreover, the construction of the Z-scheme heterojunction can effectively suppress the recombination of photogenerated electron–hole pairs while retaining the strongly oxidizing hydroxyl radicals (・OH) and strongly reducing superoxide radicals (・O₂⁻). More importantly, after five recycling cycles, the degradation efficiencies of the composite for TCH and RhB remain at 86.8% and 88.6%, respectively, with no obvious damage to its crystal structure after cycling. This demonstrates superior structural stability and reusability compared to most reported MOF-based photo-Fenton catalysts.
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DOI
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2026
·
IF 7.9
Dongsheng Zhang,Rui Yang,Ting Wu,Wangbo Wang,Yizhou Feng,Weihuang Zhu
Single-atom catalysts (SACs) have attracted considerable interest in heterogeneous Fenton-like reactions (HTFR). However, their efficiency and practical applicability require further improvement. To address this, an S-doping strategy was employed, using zeolitic imidazolate framework-8 (ZIF-8) as a precursor to fabricate Fe-based SACs (Fe-SNC) for peroxymonosulfate (PMS) activation. X-ray absorption fine structure (XAFS) analysis confirmed the coordination of atomically dispersed Fe to N and S atoms, forming a Fe–N 2 S 2 configuration. In a separate adsorption test, Fe-SNC achieved 93.1% removal of tetracycline (TC). Furthermore, TC could be removed within 40 min during PMS-based HTFR catalyzed by Fe-SNC, exhibiting significantly high performance compared to the pristine Fe-NC catalyst. Additionally, the activation energy for PMS activation was decreased to 2.87 kJ/mol with Fe-SNC, which is only 26.16% of that required for Fe-NC (10.97 kJ/mol). The superior performance of Fe-SNC is attributed to its enhanced adsorption capacity and high PMS activation ability. Density functional theory (DFT) calculations further revealed that S-doping significantly enhanced the adsorption energy between catalyst and PMS to -2.95 eV. It also promoted the elongation of O–O (1.477 Å) and S–O (1.873 Å) bonds, while facilitating charge transfer of 0.79 e. The galvanic oxidation process (GOP) also demonstrated that the electron transfer process played a key role during the PMS-based HTFR catalyzed by Fe-SNC. The quenching experiments and EPR tests further confirmed that the 1 O 2 and Fe(IV)=O were the primary reactive species. This work provides insightful perspectives for the rational design of highly efficient SACs for HTFR.
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高影响因子
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