Small
·
2023
·
IF 13.3
Zhihao Zhang,Ming Zhang,Jintian Wu,Xin Hu,Bowen Fu,Xingwei Zhang,Bin Luo,Kashif Khan,Zixuan Fang,Ziqiang Xu,Mengqiang Wu
The limited ionic conductivity and unstable interface due to poor solid–solid interface pose significant challenges to the stable cycling of solid-state batteries (SSBs). Herein, an interfacial plasticization strategy is proposed by introducing a succinonitrile (SN)-based plastic curing agent into the polyacrylonitrile (PAN)-based composite polymer electrolytes (CPE) interface. The SN at the interface strongly plasticizes the PAN in the CPE, which reduces the crystallinity of the PAN drastically and enables the CPE to obtain a low modulus surface, but it still maintains a high modulus internally. The reduced crystallinity of PAN provides more amorphous regions, which are favorable for Li + transport. The gradient modulus structure not only ensures intimate interfacial contact but also favors the suppression of Li dendrites growth. Consequently, the interfacial plasticized CPE (SF-CPE) obtains a high ionic conductivity of 4.8 × 10 −4 S cm −1 as well as a high Li + transference number of 0.61. The Li–Li symmetric cell with SF-CPE can cycle for 1000 h at 0.1 mA cm −2 , the LiFeO 4 (LFP)-Li full-cell demonstrates a high capacity retention of 86.1% after 1000 cycles at 1 C, and the LiCoO 2 (LCO)-Li system also exhibits an excellent cycling performance. This work provides a novel strategy for long-life solid-state batteries.
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高影响因子
ACS Photonics
·
2023
·
IF 7
Jun Wu,Yuchen Miao,Xiaorong Qi,Liu Yang,Xu Wang,Fei Zheng,Feiyu Zhao,Shareen Shafique,Ziyang Hu
Halide Sn-based perovskite is a promising candidate to replace Pb-based perovskites due to its low toxicity and compatibility with horizontal charge transport in lateral detectors. However, the photodetector performance of halide Sn-based perovskites is often suppressed by poor film quality and “self-doping” effect in the process of film fabrication. In this study, uniform and dense Sn-based layered-perovskite films are obtained by solvent engineering. The fabricated photodetector has a high responsivity of 2.16 × 103 A/W, a high detectivity of 5.16 × 1013 Jones, and the ultrafast response of microsecond level in ambient conditions. Furthermore, the resulting field-effect transistor shows a rare bipolar transport behavior, and the mobilities of electrons and holes both exceed 0.08 cm2 V–1 s–1. Besides, a low threshold voltage and a small subthreshold swing of the transistor are achieved. This achievement provides valuable guidance for the development and application of Sn-based layered-perovskite materials and lays a foundation for the development of high-performance lead-free electronic devices.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Changcheng Cui,Junjie Fu,Dongxing Kou,Yimeng Li,Hao Wei,Zucheng Wu,Wenhui Zhou,Zhengji Zhou,Shengjie Yuan,Yafang Qi,Shuping Pang,Zhipeng Shao,Sixin Wu,Guanglei Cui
The Cu 2 ZnSn(S,Se) 4 solar cells (CZTSSe) are emerging as a hot area of low-cost thin film photovoltaic technology owing to its non-toxicity and excellent photoelectric properties. However, the large open-circuit voltage deficit ( V oc,deficit ) caused by the inherently defective CdS/ CZTSSe heterojunction interface is still a huge challenge for improving power conversion efficiency. Herein, we reconstruct the heterojunction interface by inserting a CZTSSe:In into the CdS/CZTSSe heterojunction through an In 2 Se 3 post-deposition treatment. The local occupation of In 3+ at Zn 2+ and Sn 4+ sites decreases the disordered Zn- and Sn-related deep defects and generates benign In Zn donors within CZITSSe transition layer simultaneously, which effectively enhances the surface p-to-n conversion. The combination of chemical and field-effect passivation regulates the charge extraction and passivates the charge recombination. As a result, the In element-buried absorber enables the V oc boost from 488 to 527 mV with an impressive active-area efficiency of 13.59 %. These results demonstrate the great potential of the In element-buried absorber in alleviating the V oc,deficit and enhancing the performance of CZTSSe solar cells.
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JOURNAL OF HAZARDOUS MATERIALS
·
2023
·
IF 13.6
Chi Ma,Wenlei Fan,Wei Qin,Yafei Guo,Lichun Ma,Nelson Belzile,Tianlong Deng
Although efficient removal of Cs from wastewater is of great importance because of the nuclear energy sustainable development and public health, removing cesium is challenging for the high concentrations of sodium and potassium ions coexist. In this work, we synthesized the first novel bismuth-doped layered tin sulfide (KBS) and applied it to the efficient green adsorption of liquid cesium resources. KBS could reach the adsorption equilibrium for Cs + within only 2 min with a theoretical adsorption capacity of 425.55 mg/g. Furthermore, the adsorption performance remained reliable after 10 cycles of use. The structure and properties of KBS were explained at the molecular level by DFT calculations, and the calculated results were in sound agreement with the experimental data. Meanwhile, in this study, the material was reinforced and shaped by the electrostatic interaction of Zein and sodium alginate hydrogel, and finally, Zein@SA/KBS spherical composite adsorbent was obtained. The problem of the difficult recovery of adsorbent and the secondary contamination was solved. The adsorption performance of Zein@SA/KBS on Cs + was better than most composite adsorbents and showed reliable stability. Therefore, the new microspherical adsorbent (Zein@SA/KBS) has great potential for industrial application in removing radioactive cesium from wastewater.
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高影响因子
MODERN PHYSICS LETTERS B
·
2023
·
IF 1.9
Yaqi Chen,Xin Fan,Shan Gao,Wenting Ji,Xinjian Li,Yuewen Zhang,Hongan Ma,Xiaopeng Jia
Electronegative S-filled skutterudite compounds have attracted considerable attention due to scattering of low-frequency phonons (35–50 cm − 1 ), but there are few reports on S-filled double-substituted skutterudite. In this work, a series of S-filled Te-Sn double-substituted skutterudite compounds were synthesized using high pressure and high temperature (HPHT) method. The phase composition, microstructure, and thermoelectric properties of S x Co 4 Sb 1 1 Te 0 . 7 Sn 0 . 3 ( x = 0 , 0.05, 0.10, 0.20) samples were systematically determined. The results show that the introduction of S increases the substitution limit of Te in the Sb site. Under the combined effect of the sample synthesis pressure and S filling, the nucleation density of the sample grains increases and the grain size decreases. At the same time, there are numerous special microstructures in the samples synthesized in a high-pressure environment. Thermoelectric performance studies show that a small amount of S filling optimizes the Seebeck coefficient of the sample and increases the power factor (PF). With an increase of the amount of S introduced, the thermal conductivity of the samples decreases significantly. Therefore, the maximum zT value of an S 0 . 0 5 Co 4 Sb 1 1 Te 0 . 7 Sn 0 . 3 sample synthesized at 2.5 GPa pressure is 0.17 at room temperature. The maximum zT value of the sample is 1.26 at 773 K.
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高影响因子
ACS Applied Energy Materials
·
2023
·
IF 6.4
Mengyuan Song,Changhao Tian,Tao Huang,Aishui Yu
Electrolyte plays a crucial role in constructing the ionic transport paths and oxygen diffusion routes along with maintaining the interfacial stability based on the open working environment of lithium–oxygen batteries. Herein, on the basis of a succinonitrile-based gel polymer electrolyte prepared by in situ thermal-cross-linking ethoxylate trimethylolpropane triacrylate monomer, the SLFE-5%LAGP formed by further adding Li1+xAlxGe2–x(PO4)3 (LAGP) has high ionic conductivity at room temperature (3.71 mS cm–1 at 25 °C), high lithium-ion transference number (tLi+ = 0.644), and excellent long-term stability of the Li/SLFE-5%LAGP/Li symmetric cell at a current density of 0.1 mA cm–2 for over 600 h. More importantly, LAGP can provide adsorption sites for oxygen molecules on its surface followed by the reduction of oxygen and the formation of Li2O2. Consequently, the cell equipped with the SLFE-5%LAGP has an ultrahigh discharge capacity (5652.8 mAh g–1) that exceeds the liquid electrolyte system and achieves an ultralong stable cycling of 52 cycles. This work deepens the understanding of the solid-state lithium–oxygen batteries through the integrated design of electrolytes and electrodes to realize the superior solid–solid contact interface and achieve stable long-term cycling processes.
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JOURNAL OF HAZARDOUS MATERIALS
·
2023
·
IF 13.6
Yang Liu,Feng-Qi Shi,Xin Hao,Meng-Yu Li,Lin Cheng,Cheng Wang,Kai-Yao Wang
Efficient adsorption of radioactive 137 Cs + and 60 Co 2+ and their decay products 137 Ba 2+ and 60 Ni 2+ bears significance for hazard elimination in case of nuclear emergency, which relies on the adsorption rate enhancement that takes advantages of compositional and structural optimization. Herein, we report a zinc-doped selenidostannate constructed from T2-supertetrahedral clusters, namely K 3.4 (CH 3 NH 3 ) 0.45 (NH 4 ) 0.15 Zn 2 Sn 3 Se 10 ·3.4 H 2 O ( ZnSnSe‐1K ). The soft Se and micro-porosity synergistically endow this material with a binding affinity to Cs + , Ba 2+ , Co 2+ , and Ni 2+ ions and ultrafast kinetics with R > 97.6% in 2–60 min. In particular, ZnSnSe‐1K can remove 99.34% of Cs + in 2 min ( K d Cs > 1.5 × 10 5 mL g −1 ), contributing to a record rate constant k 2 of 9.240 g mg −1 min −1 that surpasses all metal chalcogenide adsorbents. ZnSnSe‐1K exhibits good acid/base tolerance (pH = 0–12), and the adsorption capacities at neutral are 253.61 ± 9.15, 108.94 ± 25.32, 45.76 ± 14.19 and 38.49 ± 2.99 mg g −1 for Cs + , Ba 2+ , Co 2+ , and Ni 2+ , respectively. The adsorption performances resist well co-existing cations and anions, and the removal rates can keep above or close to 90% even in sea water. ZnSnSe‐1K is employed in continuous column and membrane filtration, both of which shows excellent elimination efficiency ( R > 99%) for mixed Cs + , Ba 2+ , Co 2+ , and Ni 2+ . Especially, the membrane with an ultrathin (70 µm) ZnSnSe‐1K layer can remove 97–100% Cs + in suction filtration with a short contact time of 0.33 s. Combined with the simple synthesis, facile elution and great irradiation resistance, ZnSnSe‐1K emerges as a selenide adsorbent candidate for use in environmental remediation especially that involving nuclear waste disposal .
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高影响因子
Journal of Energy Storage
·
2023
·
IF 9.4
Fangzhao Pang,Yongxin Wu,Xiaowei Liu,Lei Guo,Shuaibo Gao,Peilin Wang,Dihua Wang,Huayi Yin
Lead-acid batteries (LABs) are commonly used in various energy-storage areas, but their lifetime is seriously limited by the corrosion of the positive grids in deep charge-discharge cycles. Among various factors, the composition of grid alloy is key to determining its corrosion behaviors . Herein, PbBaSnAl (PBSA) alloys with different contents of Ba are prepared by using an induction melter in an argon-filled glovebox. The results of electrochemical measurement show that the oxygen evolution potential of PBSA increases from 1.8586 V to 1.8815 V, and the corrosion rate decreases from 0.4949 mg·h −1 ·cm −2 to 0.2211 mg·h −1 ·cm −2 . The results of mechanical tests show that after Ba is added, the strain of the alloy increases and the fracture of the alloy decreases during grid creep. This work provides a promising Ba-containing positive grid alloy instead of the commercial PbCaSnAl (PCSA) grid alloy, which may prolong the service life of LABs and improve the application of LABs in energy storage areas.
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高影响因子
Journal of Energy Storage
·
2023
·
IF 9.4
Songdong Yuan,Yi Luo,Kai Xia,Anqiao Zheng,Guodong Jiang,Mingxia Fan,Jian Xiong,Changchi Yuan,Zhiguo Li,Xiaobo Wang
Poly (ethylene oxide) (PEO) is a potential material for solid-state lithium batteries . However, the present polymer electrolyte is hampered by its low ionic conductivity at room temperature and poor mechanical properties, which are significant barriers to its practical application. Herein, we designed a high-performance composite solid electrolyte (PLSP) by incorporating PEO, LiTFSI, and the solid plasticizer butanedinitrile into a 3D polyethylene terephthalate (PET) nonwoven framework with excellent mechanical properties. The PLSP achieved an impressive ionic conductivity of 5.45 × 10 −4 S cm −1 , nearly 100 times higher than the original PEO electrolyte (6.1 × 10 −6 S cm −1 ) at room temperature. Additionally, the optimized composite electrolyte exhibited an extended electrochemical window of up to 5.2 V vs. Li + /Li and a remarkable tensile strength exceeding 8.55 MPa. The stability of the lithium symmetrical battery's charge and discharge voltage platform after 400 h of cycling indicated favorable interfacial compatibility between the PLSP and lithium metal. Furthermore, the assembled Li/PLSP/LFP configuration displayed a discharge specific capacity of 131.4 mA h g −1 and a capacity retention of 93.8 % after 100 cycles at 1C at room temperature, highlighting the promising potential of the composite electrolyte for solid-state lithium batteries.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 42
·2305965
·
IF 19
Xinfeng Tang,Yanhua Zhu,Delong Duan,Xingwu Zhai,Yujian Xia,Tao Xu,Qian Liu,Hui Zhang,Min Zhou
Due to the deep biological penetrability and therapeutic depth, the photothermal therapy over second near-infrared region (NIR-II) is booming against deep-seated tumors. Intensive endeavors are committed to looking for suitable photothermal agents (PTAs), but the progress seems not so satisfied toward the choice of PTA dosage. Herein, a comprehensive parameter, incident photon-to-thermal conversion coefficient (IPTCE), is used to evaluate the overall conversion of PTAs at different dosage, which will benefit for determining the optimized dosage of PTAs in pursuit of complete healing together with reduced long-term damages of nanodrugs. To prove the possibility, a series of anionic solid solution MXenes are chosen as hosts due to their versatile chemical compositions and correspondingly tunable light response. By deconvoluting fundamental structure–composition–property relationships, anionic regulation with extra electron injection leads to tunable free carrier densities and enhanced NIR-II harvesting. Ti 3 C 1.23 N 0.77 with high-level nitrogen exhibits extraordinary extinction coefficient (43.5 L g −1 cm −1 ) than other MXenes. The parameter of IPTCE can guide the choice of PTA concentration for complete photothermal healing in vitro and vivo. This proof-of-principle demonstration highlights synthetically tailoring of the light harvesting over NIR-II biowindow for a given host material by anionic regulation and further optimizes tumor photothermal therapy at low dose.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Xiaoyan Zhang,Hongmei Wang,Caihui Hong,Shufu He,Huiling Song,Xinyan Chu,Tongwei Han
The layered structural black phosphorus (BP), as an emerging two-dimensional material, has aroused great interest due to its intriguing electrochemical properties , but its poor stability greatly limits its practical application. This work utilized a unique heteroatomic carbon microsphere (PZSC) obtained by carbonization of polyphosphazene microspheres as PZSC (-), and modified BP with PZSC using a simple ultrasound assisted liquid exfoliation technique to obtain BP/PZSC (+). The BP modified with PZSC greatly improved the cycling stability and specific capacitance, displaying a high specific capacitance of 843.1 F g −1 at 1 A g −1 . The assembled hybrid BP/PZSC (+) // PZSC (-) supercapacitor exhibits high specific capacitance, power and energy density (57.1 F g −1 , 799.9 W kg −1 , 20.3 Wh kg −1 ) with excellent cycle stability (96%, 5000r). This work effectively promotes the application of BP-based and heteroatomic carbon-based materials in the field of supercapacitors.
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ACS Sustainable Chemistry & Engineering
·
2023
·
IF 8.4
Kang Lei,Haiming Huang,Xu Jia Liu,Weiliang Wang,Kai Guo,Ren Kui Zheng,Han Li
The eco-friendly thermoelectric material SnTe has recently gained immense attention due to its excellent thermoelectric properties and potential. However, its thermoelectric properties are limited by the inherent high carrier concentration (low Seebeck coefficient) and high thermal conductivity. Herein, we further introduce rare-earth element Y on top of the conventional Cu alloying to more effectively modulate its microstructure and thermal transport properties. The experimental results reveal that Y doping gives rise to band convergence, endowing Sn1–xYxTe-5%Cu2Te with an increased power factor of ∼22.14 μW cm–1 K–2. Meanwhile, the introduced abundant Y/Y2Te3 multiscale composite nanostructures in the matrix greatly enhance phonon scattering, resulting in an ultra-low lattice thermal conductivity of ∼0.43 W m–1 K–1. Consequently, these combined effects resulted in a peak ZT value of 1.27 at 823 K in Sn0.97Y0.03Te-5%Cu2Te. An enhancement of nearly 217% is achieved compared to pristine SnTe, which greatly improves the thermoelectric properties of SnTe-based materials.
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