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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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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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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CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Kejia Kang,Bo Yu,Guanyu Deng,Pei Wang,Jian Yin,Hongbo Zhang,Guoqiang Luo,Hao Song
Copper impregnated carbon/carbon composite (Cu-C/C composite) was fabricated for novel sliding collector material by weaving carbon fiber, heat treatment and Cu alloy impregnation. The effects of counterpart materials (Fe ball and Cu ball) on friction and wear behaviors were investigated and compared with the result of carbon contact strip used in high-speed railway. Morphology, chemical composition, phase and structure of wear surface and tribolayer were characterized to clarify tribological mechanisms. The results show that friction coefficient follows the order: Cu-C/C composite/Cu ball > carbon contact strip/Fe ball > Cu-C/C composite/Fe ball > carbon contact strip/Cu ball. The carbon crystalline of wear surface appears preferred orientation along the sliding orientation, which is benefit for boundary lubrication . When the counterpart material is Fe ball, Cu-C/C composite is superior to pure carbon strip in mechanical strength , electrical conductivity , wear resistance and friction performance.
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JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2023
·Vol. 27
·期 10
·2593-2606
·
IF 2.5
Li Er-Mei,Zhu Li,Li Chao-Xiong,Shi Ling-Jun,Li Bing,Li Fang,Deng Ning,He Jian-Bo
Stannous sulfate is commonly used as an additive in the positive lead pastes of lead-acid batteries, but its real function and mechanism are still vague and need further study. The present work investigates the intrinsic effects of tin additives on the positive electrode performance under well-controlled experimental conditions. The tin additives are added in three ways: the SnSO 4 dissolved in 4.5 M H 2 SO 4 electrolyte, the metal Sn melted in metal Pb substrate, and the SnSO 4 mixed in homemade industrial lead pastes. A series of evolutions are clearly revealed in structure, composition, and redox activity of the positive active materials with the content of Sn. Both the SnSO 4 in the electrolyte and in the positive lead pastes have a significant inhibiting effect on the transformation between PbSO 4 and PbO 2 , leading to a decrease in the charge/discharge capacities with increasing content of SnSO 4 . A similar but weaker inhibiting effect was also found for the Sn melted in the Pb-Sn alloys. The SnSO 4 has a significant enhancement effect on the grain size of PbSO 4 /PbO 2 , which increases the resistance of the solid-phase transformation deep inside the grains during the charge/discharge. All these results do not support the use of SnSO 4 in the positive pastes of lead-acid batteries. Graphical abstract
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ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Chi Ma,Chenyu Qi,Dingbo Wei,Zhenzhen Jiang,Yafei Guo,Nelson Belzile,Tianlong Deng
The efficient and renewable recovery of cesium and strontium by absorption from a new type of geothermal water liquid mineral resource is highly desirable but still challenging. In this work, a new Zr-doped layered potassium thiostannate adsorbent (KZrTS) was first synthesized and used for Cs+ and Sr2+ green and efficient adsorption. It was found that KZrTS had very fast adsorption kinetics toward both Cs+ and Sr2+ with an equilibrium reached within 1 min, and the theoretical maximum adsorption capacities for Cs+ and Sr2+ were 402.84 and 84.88 mg/g, respectively. Moreover, to solve the loss problem of the engineering application of the powdered adsorbent KZrTS, KZrTS was uniformly coated with polysulfone by wet spinning technology to form micrometer-level filament-like absorbents (Fiber-KZrTS), whose adsorption equilibrium rates and capacities toward Cs+ and Sr2+ are almost the same as that of powder. Furthermore, Fiber-KZrTS showed excellent reusability, and the adsorption performance remained virtually unchanged after 20 cycles. Therefore, Fiber-KZrTS has potential application for green and efficient cesium and strontium recovery from geothermal water.
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高影响因子
Metals
·
2023
·Vol. 13
·期 4
·658
·
IF 2.9
Zhen Feng,Ruoxuan Chen,Rui Huang,Fangli Zhang,Weizhen Liu,Sailin Liu
Phosphorus-based materials are considered to be reliable anode materials for potassium ion batteries (PIBs) due to their high theoretical capacity but suffer from inferior cycling stability and an unstable Solid Electrolyte Interface (SEI) layer. Herein, optimized ball-milled parameters and concentrated electrolytes are introduced to enhance the electrochemical performance of Sn4P3/C anodes. Consequently, the electrodes synthesized under optimized ball milling parameters could deliver a reversible capacity of 307.8 mA h g−1in diluted Potassium hexafluorophosphate (KPF6) electrolyte. Moreover, compared with diluted bis(fluorosulfonyl)imide (KFSI) electrolyte, a robust inorganic KF-rich SEI layer can be formed on the electrode’s surface by employing concentrated KFSI electrolyte and provides more rapid K ion conduction rates. Meanwhile, a large proportion of the FSI−anions participated in the K+solvation shell when the KFSI concentration increased. As a result, high specific capacities (225.1 mA h g−1at 50 mA g−1after 200 cycles) and excellent Coulombic efficiency (97.24% at 500 mA g−1after 200 cycles) can be achieved. This work may deepen our understanding of synthetic optimization in electrode material design and the role of concentrated electrolyte in tunning the solvation structure, and also offer an insightful clue to the design of high-capacity phosphorus-based anodes.Keywords:phosphorus-based anode;ball-milling;concentrated electrolyte;solvation structure;SEI layer
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Zhongming Li,Qi Liu,Shan Tang,Dong Feng,Wenbo Zhao,Bin Li,Delong Xie,Yi Mei
It is significant to develop high-efficient fire retardants all the time. Ethylene vinyl acetate (EVA) features flammability and poor fire resistance ability, which severely hindered its extensive application with advanced requirements. Herein, a novel strategy was proposed to combining long chain phosphaphenanthrene grafted MXene (DPP-MXene, also donated as DM) and black phosphorene nanosheets (BP) with EVA to fabricate EVA/DMBP nanocomposites with high fire resistance. Thermogravimetric analysis (TGA) proved that DMBP synergistic system can significantly improve the thermal stability and char forming ability of EVA as proved by delayed thermal decomposition temperatures . The combustion test results suggested that the addition of 3 wt. % DMBP into EVA matrix can induce the EVA/DMBP-3 composites with favorable flame resistance property, the UL-94 V-0 rating and limiting oxygen index (LOI) value (26.7 %) was achieved for the EVA/DMBP-3 components, and significantly decrease in total heat release (THR) (21.5 %) and peak heat release rate (PHRR) (48.1 %) were achieved by addition of 3 wt. % DMBP into EVA elastomer , indicated its incombustible nature. Furthermore, it was found that the incorporation of DMBP synergistic system only yielded the EVA/DMBP-3 composites with slight reduction of the tensile strength and elongation at break as compared to neat EVA. The high efficiency of the prospect flame retardant provided a competitive candidate material for EVA towards wide applications.
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