CERAMICS INTERNATIONAL
·
2017
·
IF 2.986
Ye Lian,Jinqiu Zhang,Xiaochuan Ma,Peixia Yang,Maozhong An
Three-dimensional ordered macroporous (3DOM) CuIn x Ga 1−x Se 2 (CIGS) film is synthesized by one-step galvanostatic electrodeposition based on polystyrene templates from a special mixture of ionic liquid 1-butyl-3-methylimidazolium tetra-fluoroborate and ethanol. X-ray diffraction pattern , Raman spectroscopy and transmission electron microscopy present the CIGS film has ideal chalcopyrite crystallization. 3DOM CIGS film with high Ga content has photochemical activity and good photo-stability, its band gap is 1.34 eV. This is a simple, feasible and additive free method without selenization process to synthesize 3DOM CIGS film, the film is qualified and available for absorber-layer fabrication or other fields.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE
·
2020
·Vol. 647
·期 9
·1025-1030
·
IF 1.24
Yihan Wang,Hu Zhou,Jinghao Xiao,Aihua Yuan
Metal selenides as anode materials of lithium-ion batteries (LIBs) has received considerable attention recently. In order to boost the electronic conductivity and alleviate the volume change of electrode materials upon the cycles, a facile strategy is employed in this work, where Prussian blue analogue (PBA) nanocubes are encapsulated into three-dimensional (3D) network of graphene aerogel (GA), followed by a high-temperature selenization treatment to isolate the composite of FeCoSe 2 @GA. The composite can be directly employed as free-standing anode materials of LIBs. Studies reveal that the FeCoSe 2 @GA electrode demonstrates an intriguing cycle stability and rate capability with a specific capacity of ∼500 mAh g −1 at 100 mA g −1 after 100 cycles. The outstanding lithium-storage properties can be attributed to the 3D porous feature as well as the strong confinement effect of GA for FeCoSe 2 particles, which provides a large number of ion-exchange channels, and prevents the severe agglomeration and large volume expansion of active particles during the charge/discharge process.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
Progress in Natural Science-Materials International
·
2021
·
IF 3.607
Cheng Lin,Liuzhang Ouyang,Renzong Hu,Jun Liu,Lichun Yang,Huaiyu Shao,Min Zhu
To promote substantially the performances of red phosphorous (P) anode for lithium and sodium-ion batteries, a simple plasma assisted milling (P-milling) method was used to in-situ synthesize SeP 2 /C composite. The results showed that the amorphous SeP 2 /C composite exhibits the excellent lithium and sodium storage performances duo to the small nano-granules size and complete combination of selenium (Se) and phosphorous (P) to generate Se–P alloy phase. It was observed that inside the granules of SeP 2 /C composite the nanometer size of the SeP 2 particles ensured the fast kinetics for Li + and Na + transfer, and the amorphous carbon wrapping the SeP 2 particles relieved volume expansion during lithium/sodium storage processes and enhances electric conductivity. Therefore, the SeP 2 /C electrode retained reversible capacities of 700 mA h g −1 at 2 A g −1 after 500 cycles and 400 mA h g −1 at 0.5 A g −1 after 400 cycles as anode for LIBs and SIBs, respectively. The result proves that the amorphous SeP 2 /C composite can be a new type of anode material with great potential for lithium and sodium-ion batteries.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2023
·Vol. 415
·期 22
·5391-5401
·
IF 4.3
Qi Chengcheng,Wang Wei,Dong Yongping
Single-atom catalysts received increasing attention due to their maximum atom utilization efficiency. However, metal-free single atoms have not been used to construct electrochemical sensing interfaces. In this work, we demonstrated the use of Se single atoms (SA) as electrocatalyst for sensitive electrochemical nonenzymatic detection of H 2 O 2 . Se SA was synthesized and anchored on nitrogen-doped carbon (Se SA/NC) via a high-temperature reduction strategy. The structural properties of Se SA/NC were characterized by transmission electron microscopy (TEM), high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM), energy-dispersive spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and electrochemical techniques. The results showed that Se atoms were uniformly distributed on the surface of the NC. The obtained SA catalyst exhibited excellent electrocatalytic activity toward H 2 O 2 reduction, and can be used to detect H 2 O 2 in a wide linear range from 0.04 mM to 11.1 mM with a low detection limit of 0.018 mM and high sensitivity of 403.9 µA mM −1 cm −2 . Moreover, the sensor can be used for the quantification of H 2 O 2 concentration in real disinfectant samples. This work is of great significance for expanding the application of nonmetallic single-atom catalysts in the field of electrochemical sensing. Graphical abstract Se single atoms (Se SA) as novel electrocatalyst were synthesized and anchored on nitrogen-doped carbon (NC) for sensitive electrochemical nonenzymatic detection of H 2 O 2
研究领域:
电化学传感
·
催化
·
纳米材料
·
分析化学
·
材料科学
✓ 已验证
DOI
高影响因子
Functional Materials Letters
·
2024
·
IF 1.2
Kangjun Geng,Zhengdong Feng,Tingyu Zhang,Shan Huang,Honcheng Zhu,Bangzhi Shen,Boning Dong,Yan Yan,Sai Jiang,Jianhua Qiu,Huafei Guo
Antimony Selenide (Sb 2 Se 3 ) exhibits potential as a solar energy material owing to its optimal bandgap, lack of toxicity, and abundance of earth abundant elements. Currently, cadmium sulfide (CdS) serves as the predominant buffer layer for Sb 2 Se 3 solar cells. However, the use of CdS hinders environmentally friendly advancement due to the toxic properties of the element cadmium. Hence, the quest for non-toxic buffer layers poses a significant challenge to the further advancement of Sb 2 Se 3 solar cells. In prior research, tin oxide (SnO 2 ) has been explored as a buffer layer. Nonetheless, the efficiency of SnO 2 /Sb 2 Se 3 solar cells was hampered by the rough surface of SnO 2 films and the poor crystallinity of Sb 2 Se 3 films. In this investigation, we enhanced device efficiency by improving the uniformity of the SnO 2 surface and enhancing the crystallinity of Sb 2 Se 3 through spin-coating sulfur (S) onto the SnO 2 film. Detailed examinations were conducted on the structure, optical, and electrical properties of the respective SnO 2 and Sb 2 Se 3 thin films. Ultimately, an efficiency of 3.38% was achieved using the spin-coated S:SnO 2 film, marking an 85% enhancement compared to the baseline device.
研究领域:
光伏技术
·
材料科学
·
薄膜技术
·
可再生能源
✓ 已验证
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2020
·
IF 9.567
Xuelian Yu,Yuxuan Wu,Jiayi Cui,Yue Ran,Wei Lin,Li-Min Liu,Jinhua Ye,Yihe Zhang,Andreu Cabot
Strain engineering has become an emerging strategy to tailor the performance of nanocatalysts. However, current strained catalysts overwhelmingly rely on stresses originated at catalyst–support interfaces. Self-standing strained nanostructures are extremely challenging to produce, and thus their impact on catalytic and photocatalytic activities remains largely unknown. Herein, we propose a ligand-based colloidal strategy for the one-step growth of bended metal chalcogenide nanoplates with a built-up strain. This strategy is based on the seeded growth of strained nanostructures from sacrificial seeds which provide a proper lattice mismatch. We demonstrate this strategy for the synthesis of strained orthorhombic SnSe and SnS nanoplates from rock salt SnS seeds. We probe not only the presence of atomic distortions in the periodic lattice but also its coupling with the generation of a large density of selenium vacancies. Geometrical phase analysis evidences the formation of a strain field in self-bended SnSe nanoplates, with a maximum tensile strain up to 12%. Theoretical and experimental results further reveal that the strain-related selenium vacancies strongly affect the electronic structure of SnSe and facilitate the mobility of photogenerated charge carriers, which result in a significantly improved photoelectrochemical activity. The strategy presented here opens a new avenue for precisely tuning semiconductor functionalities via strain engineering.
研究领域:
材料科学
·
化学工程
·
纳米技术
✓ 已验证
DOI
高影响因子
ACTA PHYSICO-CHIMICA SINICA
·
2023
·
IF 10.9
Yixuan Wang,Canhui Zhang,Xingkun Wang,Jiarui Duan,Kecheng Tong,Shuixing Dai,Lei Chu,Minghua Huang
With the depletion of fossil fuel resources and the increasing severity of environmental pollution, it has become imperative to seek energy conversion devices with low cost, high efficiency and excellent environmental compatibility. Considering their high theoretical energy density, affordability and environmentally friendly nature, Zn-air batteries (ZABs) are regarded as promising energy storage and conversion devices. The utilization of seawater in ZABs (S-ZABs) holds great potential, given the abundance of seawater reserves, offering economic and social benefits such as reducing electrolyte costs and alleviating competition for freshwater consumption in human activities. However, the application of S-ZABs remains challenging, particularly in constructing high-performance cathode oxygen reduction reaction (ORR) catalysts that are highly resistant to Cl − corrosion in seawater-based electrolytes. In this study, we have engineered an ultrathin carbon-chainmail-shell encapsulated Co 9 Se 8 nanoparticles on N-doped mesoporous carbon (named as NMC-Co 9 Se 8 ) electrocatalysts using the high-temperature selenization strategy. The ultrathin carbon-chainmail-shell on the outside improves electron transfer during the electrocatalysis and suppresses nanoparticles agglomeration. Additionally, it could act as armor for protecting the inner active site from the adsorption of corrosive Cl − . Benefit from this unique structure, the NMC-Co 9 Se 8 catalyst exhibits excellent ORR performance, with an onset potential of 0.904 V and a half-wave potential of 0.860 V in seawater-based electrolytes. The catalyst also affords the lowest Tafel slope (35.5 mV·dec −1 ) and the highest kinetics current density of 9.816 mA·cm −2 at 0.85 V among all investigated samples. Owing to the protective effect of the ultrathin carbon-chainmailshell on the inner active sites, the NMC-Co 9 Se 8 catalyst retains 91.6% of its initial activity after continuous operation for 50000 s, surpassing the commercial Pt/C catalyst (with a current retention rate of 62.8%). More importantly, the S-ZABs based on the NMC-Co 9 Se 8 catalyst deliver a high maximum power density of 172.4 mW·cm −2 and a high specific capacity of 643.9 mAh·g −1 , exceeding those of S-ZABs powered by the commercial Pt/C catalyst (151.2 mW·cm −2 and 548.3 mAh·g −1 ). Furthermore, the S-ZABs driven by the NMC-Co 9 Se 8 catalyst demonstrate a discharge stability for up to 150 h and maintain a stable charge-discharge cycle stability over 200 h, demonstrating the practical application performance of the NMC-Co 9 Se 8 catalyst. In practical applications, the S-ZABs driven by the NMC-Co 9 Se 8 catalyst can illuminate a light-emitting diode (LED) with a driving voltage of 2 V for several hours. This work provides new ideas for developing efficient and durable catalysts with high Cl − corrosion resistance for applications in seawater-based Zn-air batteries and other energy conversion technologies. Download: Download high-res image (142KB) Download: Download full-size image
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
高影响因子
Nature Communications
·
2018
·Vol. 9
·期 1
·1-10
·
IF 12.353
Wen Xixing,Chen Chao,Lu Shuaicheng,Li Kanghua,Kondrotas Rokas,Zhao Yang,Chen Wenhao,Gao Liang,Wang Chong,Zhang Jun,Niu Guangda,Tang Jiang
Antimony selenide is an emerging promising thin film photovoltaic material thanks to its binary composition, suitable bandgap, high absorption coefficient, inert grain boundaries and earth-abundant constituents. However, current devices produced from rapid thermal evaporation strategy suffer from low-quality film and unsatisfactory performance. Herein, we develop a vapor transport deposition technique to fabricate antimony selenide films, a technique that enables continuous and low-cost manufacturing of cadmium telluride solar cells. We improve the crystallinity of antimony selenide films and then successfully produce superstrate cadmium sulfide/antimony selenide solar cells with a certified power conversion efficiency of 7.6%, a net 2% improvement over previous 5.6% record of the same device configuration. We analyze the deep defects in antimony selenide solar cells, and find that the density of the dominant deep defects is reduced by one order of magnitude using vapor transport deposition process.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Haonan Yue,Mengwei Han,Xinni Li,Ting Song,Yong Pei,Xianyou Wang,Xiongwei Wu,Tengfei Duan,Bei Long
The development of a low-cost, high-capacity, and insertion-type anode is key for promoting “rocking chair” zinc-ion batteries. Herein, commercial Bi 2 O 3 (BiO) particles are transformed into Bi 2 O 2 Se@Bi 4 O 8 Se (BiOSe) nanosheets through a simple selenylation process. The change in morphology from commercial BiO particle to BiOSe nanosheet leads to an increased specific surface area of the material. The enhanced electronic/ionic conductivity results in its excellent electrochemical kinetics. Ex situ XRD and XPS tests prove the intercalation-type mechanism of BiO and BiOSe as well as the superior electrochemical reversibility of BiOSe compared to BiO. Furthermore, the H + /Zn 2+ co-insertion mechanism of BiOSe is revealed. This makes BiOSe to have low discharge plateaus of 0.38/0.68 V, a high reversible capacity of 182 mA h g −1 at 0.1 A g −1 , and a long cyclic life of 500 cycles at 1 A g −1 . Besides, the BiOSe//MnO 2 “rocking chair” zinc-ion battery offers a high capacity of ≈90 mA h g −1 at 0.2 A g −1 . This work provides a reference for turning commercial material into high-performance anode for “rocking chair” zinc-ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储
·
纳米材料
·
电池技术
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Chen Zhang,Mingjun Chen,Xiaohui Zhao,Wenming Zhang,Zhanyu Li
With its consistent thermal runaway temperature and superior capacity, aluminum ion batteries have emerged as a key area for battery development. At the moment, electrode material is the main focus of aluminum ion battery capacity enhancement. Selenide is anticipated to develop into a high-performance cathode for aluminum ion batteries, since it is a type of high energy density electrode material. However, because selenide is soluble in acid electrolytes, Al-Se batteries have low cycle performance and cannot keep up with the present demand for electronic gadgets. Here, homogeneous-structured precursors were created via a hydrothermal reaction , and MnSe 2 –MnSe heterojunction hollow spheres were created a step further via temperature control of the selenidation reaction. With 103.76 mAh/g of specific capacity remaining after 3000 cycles at 1.0 A/g, this novel heterojunction material exhibits astounding cycle stability. After additional investigation, it was shown that the MnSe 2 –MnSe heterojunction may prevent the dispersion of the active substances, significantly enhancing the cycle performance. The density of states (DOS) of electrode materials demonstrates the superior electronic conductivity of this heterojunction material. Meanwhile, it was computationally demonstrated that the MnSe 2 –MnSe heterojunction has a strong adsorption energy for AlCl 4 − , thus accelerating the reaction kinetics. In summary, the performance of selenides has been improved by this novel heterojunction material, which also makes for a superior cathode material .
研究领域:
电化学
·
材料科学
·
能源存储
·
纳米材料
·
固态化学
·
电极材料
✓ 已验证
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2024
·Vol. 11
·期 21
·7552-7562
·
IF 6.1
Yunxiu Wang,Yilin Wang,Zenghui Cai,Zhijiang Yu,Hao Dong,Yifan Zhang,Yanli Zhou,Xintao Zhang,Yanjun Zhai,Fuyi Jiang,Caifu Dong
To address the slow reaction kinetics and poor cycling stability of ZnSe during sodium storage, in this study, the two-dimensional network structure [Zn(L3)·H2O]n (ZnL, L = 5-aminoisophthalic acid) was firstly successfully prepared by a simple solvothermal reaction. Then, nitrogen-doped carbon coated ZnSe nanoparticle composites (denoted as ZnSe@NC) were obtained by selenization of ZnL. Benefiting from the synergistic effect of ZnSe nanoparticles and NC, ZnSe@NC demonstrated ultra-long cycling stability (a capacity decay rate of only 0.052% per cycle) and high rate performance (400.6/311.1 mA h g−1 at 0.1/10 A g−1). The excellent electrochemical properties of ZnSe@NC can be attributed to high pseudocapacitance contribution, low charge transfer impedance, and high ion diffusion coefficient. In addition, ex situ XRD, XPS, and HRTEM analyses revealed that the sodium storage process of ZnSe@NC is a conversion reaction followed by an alloying reaction. More importantly, the sodium-ion full battery Na3V2(PO4)3@rGO//ZnSe@NC can maintain a reversible capacity of 216.4 mA h g−1 after 100 cycles at 0.3 A g−1. This approach provides a promising method for the design of MOF-derived metal selenide materials for energy storage and conversion.
研究领域:
材料科学
·
能源化学
·
纳米技术
·
电化学
·
储能技术
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2020
·
IF 8.247
Ke Zhao,Yaru Li,Haoliang Cheng,Ke Hu,Zhong-Sheng Wang
We demonstrate herein a mixed solvent containing organic amines and water for the solution processing of CuSeCN and apply it as the hole-transport material for stable and efficient inverted perovskite solar cells for the first time. The obtained CuSeCN film is characterized with X-ray diffraction spectrum, X-ray photoelectron spectroscopy, scanning electron microscope , and current-potential characteristics. High-quality perovskite film can be formed on the CuSeCN film obtained from the spin-coating of CuSeCN solution in a mixture solvent of H 2 O, ethanolamine (ETA), ethylenediamine (EDA), diethanolamine (DTA) with volume ratio of 2:6:1:1. The CuSeCN-based perovskite solar cell yields power conversion efficiency of 15.61% at forward scan and 15.97% at reverse scan with negligible hysteresis and good stability. As compared to the typically used thioether-based solvents for the solution processing of CuSCN , the mixture solvent proposed in this work is less volatile and much cheaper, which is critical for practical applications of perovskite solar cells .
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）