Science Advances
·
2022
·Vol. 8
·期 10
·
IF 14.957
Huan Yu,Yinxiang Zeng,Nian Wu Li,Deyan Luan,Le Yu,Xiong Wen (David) Lou
We developed a three-dimensional hybrid fiber host consisting of interconnected N-doped hollow carbon spheres embedded with Sn nanoparticles (denoted as Sn@NHCF) for Zn metal anodes in high-performance Zn metal batteries. Experimental observations and density functional theory calculation reveal that the zincophilic Sn nanoparticles and N-doped carbons enable the homogeneous Zn deposition on the interior and exterior surfaces of the hollow fibers. Moreover, the hierarchical hollow fiber network effectively reduces the structural stress during the plating/stripping process. As a result, the developed Sn@NHCF host exhibits remarkable electrochemical properties in terms of high Coulombic efficiency, low voltage hysteresis, and prolonged cycling stability without dendrite formation. Moreover, a full cell based on the designed Sn@NHCF-Zn composite anode and a V2O5 cathode demonstrates superior rate capability and stable cycle life. This work provides a new strategy for the design of dendrite-free Zn anodes for practical applications.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
ACS Applied Energy Materials
·
2024
·
IF 5.4
Yu Chen,Long Li,Jinfeng Huang,Jinwei Hong,Qiaocong Zhang,Wenjian Chen,Deyu Qu,Dan Liu
All-solid-state lithium batteries (ASSLBs) with sulfide electrolytes and high-capacity alloy anodes are among the most promising technologies for achieving high safety and energy density. Herein, we demonstrate a slurry-coated sheet-type electrode consisting of a 99.8 wt % Si–Sn hybrid active material and a 0.2 wt % single-walled carbon nanotube (SWCNT) binder, which could be used as a superior anode in ASSLBs. Compared to the typical composite powder electrode, the sheet-type Si–Sn electrode is free of electrolytes and extra carbon additives, enabling higher energy density at the electrode level but dominantly depending on Li+ diffusion and electron transport within the Si–Sn active material. It is identified that the lithiated Si–Sn hybrid is an excellent mixed ion-electron conductor that overcomes insufficient electronic or ionic conductivities of lithiated Si and Sn individuals. In addition, using SWCNT instead of ordinary polymer binders can improve electrode integrity and preserve electrical connections during cycling. When paired with a LiNi0.8Co0.1Mn0.1O2 (NCM811) cathode (a mass loading of 11.3 mg cm–2), the Si–Sn–SWCNT||NCM811 full cell shows stable cycling for more than 200 cycles at 0.5C with a capacity retention of 85.9%. Even at a high NCM811 loading of 36.4 mg cm–2, the full cell exhibits a considerable capacity retention of 85.0% (50 cycles, 0.1C) and a maximum areal capacity of 5.8 mAh cm–2. This work provides an industry-compatible method to produce high-performance alloy anodes for ASSLBs.
研究领域:
材料科学
·
能源技术
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
·
IF 5.383
Jianzhi Huang,Xinrong Guo,Xinjian Huang,Lishi Wang
Herein, mesoporous hollow kapok-tubes (denoted as MHKTs) is first used as carbon electrocatalyst for CO 2 electroreduction that can selectively convert CO 2 to formate without doping active elements, achieving the highest Faradaic Efficiency (FE) for formate at a potential range from −1.0 to −1.1 V vs. RHE (E = −1.0 V, FE = 48%; E = −1.1 V, FE = 50%). Moreover, MHKTs is also first used as new carbon support for loading metals in CO 2 electroreduction, metals (Sn, Bi, Pb and Cd) in-situ anchored on MHKTs are all prepared via in-situ simple one-pot synthetic strategy. The four electrocatalysts Sn@MHKTs (E = −0.9 V, FE = 94%; E = −1.0 V, FE = 95%; E = −1.1 V, FE = 90%), Bi@MHKTs (E = −0.9 V, FE = 90.5%; E = −1.0 V, FE = 93%; E = −1.1 V, FE = 92%), Pb@MHKTs (E = −1.0 V, FE = 85%; E = −1.1 V, FE = 80%) and Cd@MHKTs (E = −0.9 V, FE = 71%; E = −1.0 V, FE = 74%; E = −1.1 V, FE = 70%) all exhibit high selectivity for electrocatalytic CO 2 to formate at a wide potential range with low overpotential and high current density , respectively outperforming electrocatalysts synthesized under the same conditions that use traditional MWCNTs and rGO as carbon support (Sn@MWCNTs, Bi@MWCNTs, Pb@MWCNTs, Cd@MWCNTs; Sn@rGO, Bi@rGO, Pb@rGO, Cd@rGO). These outstanding performances of low cost metal@MHKTs electrocatalysts display great potential for large-scale using in CO 2 -to-formate process.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
Food Bioscience
·
2026
·
IF 6.2
Lin Zhu,Mingzhe Deng,Hong Zhang,Zhenbo Xu,Peijin Tong,Jianchun Wan,Boyan Gao,Liangli (Lucy) Yu,Yaqiong Zhang
A 6-month intervention in aged male C57BL/6J mice suggested that dietary sn-2 palmitate-enriched triacylglycerols (sn-2 PTAG) dose-dependently ameliorated high-fat diet-induced metabolic deterioration. The higher sn-2 PTAG doses (59.15% and 75.79%) significantly reduced liver weight, hepatic steatosis, adipocyte hypertrophy, serum total cholesterol and LDL-c levels. Mechanistically, sn-2 PTAG enhanced intestinal fatty acid absorption via upregulating transporters CD36 and FATP4, while suppressing hepatic de novo lipogenesis through downregulation of the key transcription factor SREBP-1c. Concurrently, it stimulated adipose tissue remodeling, characterized by the activation of lipolysis through elevated ATGL and the induction of thermogenesis via upregulation of PGC1α and UCP1. Crucially, sn-2 PTAG reshaped bile acid metabolism by enhancing hepatic synthesis, as evidenced by the upregulation of CYP7A1 and CYP8B1, which led to elevated levels of cholic acid and its taurine-conjugated form, taurocholic acid. This was accompanied by an altered intestinal bile acid profile, marked by increased concentrations of taurocholic acid and deoxycholic acid. These metabolic shifts were paralleled by reduced levels of FXR and FGF15, and increased level of TGR5, which may be associated with suppression of the FXR-FGF15 axis and activation of TGR5 signaling. Collectively, sn-2 PTAG may contribute to the regulation of the bile acid-mediated gut-liver-adipose axis, which is associated with dual modulation of cholesterol clearance and energy dissipation pathways, thereby offering a potential structural lipid-based strategy against age-related dyslipidemia. Our findings provided a scientific basis for developing structured dietary lipids as functional foods against age-related metabolic syndrome.
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JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY
·
2022
·Vol. 98
·期 3
·773-781
·
IF 3.709
Wei Zhang,Zheng Shen,Ling Kong,Wenbo Chen,Minyan Gu,Meng Xia,Wenjie Dong,Yalei Zhang
BACKGROUND The conversion of glucose into 5-hydroxymethylfurfural (5-HMF) involves the isomerization of glucose to fructose catalyzed by Lewis acid and subsequent dehydration of fructose catalyzed by Brönsted acid. In this work, in order to obtain a high yield of 5-HMF, a series of Sn-Al-Beta catalysts containing both Lewis and Brönsted acid sites were prepared by a convenient solid state ion exchange (SSIE) method using partially dealuminated Beta zeolite and tin(II) acetate. RESULTS The obtained bifunctional catalysts were investigated for one-pot production of 5-HMF from glucose in the ionic liquid (IL) [C 4 mim]Cl. Among various catalysts, Sn-Al-Beta- 4 - 8 exhibited the best catalytic performance, giving a 5-HMF yield of 54% under optimal reaction conditions (393 K, 2 h), along with a glucose conversion of 81%. The Sn-Al-Beta- 4-8 catalyst and IL were regenerated by the extraction of 5-HMF, and the reactivity was reserved after five runs of recycling. In addition to glucose, the Sn-Al-Beta- 4-8 /[C 4 mim]Cl system was also proven to have the potential to effectively convert other carbohydrates into 5-HMF. CONCLUSION The results suggested that the catalyst is convenient to prepare and has preferable efficiency and stability in the conversion of carbohydrates into 5-HMF. © 2022 Society of Chemical Industry (SCI).
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JOURNAL OF CATALYSIS
·
2022
·
IF 8.047
Han He,Shuqian Xia,Dan Luo
Refining lignin for aromatic hydrocarbons was crucial in the development of clean energy. The most effective way to enhance the carbon efficiency of the raw materials was to reduce the hydrogen consumption and maximize the retention of aromatic ring by directly breaking the C Ar O bond. In this regard, Sn was introduced to regulate the selectivity of Ni/SiO 2 for m-cresol hydrodeoxygenation (HDO) products at low hydrogen consumption. Thanks to the formation of the Ni-Sn alloy in the system, the bimetallic sites synergistically catalyze the C Ar O bond scission through lowering the reaction energy barrier. Further from charge analysis, it was concluded that the charge transfer from Sn to Ni promotes the hydrogenolysis, and the charge transfer between the slab and the adsorbate provides the possibility for the occurrence of direct deoxygenation reaction. The COHP analysis resulted that the introduction of Sn accelerated the C Ar O bond cleavage. Interestingly, another deoxygenation pathway was proposed from the isomerization conversion of m-cresol to dienone intermediate (3-methyl-3,5-cyclohexadienone) in the calculation of transition state. Further HDO can form toluene effortlessly due to the presence of the oxyphilic metal Sn. This also explains the high selectivity of Ni-Sn to toluene. Moreover, the introduction of the Sn promoter effectively prolongs the lifetime of the catalyst by enhancing the tolerance to carbon deactivation.
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APPLIED CATALYSIS A-GENERAL
·
2022
·
IF 5.723
Fanchao Zeng,Yongxia Zhu,Baofang Jin,Yongjun Ji,Lei Shi,Guangwen Xu,Dongxing Fu,Ziyi Zhong,Fabing Su
Multi-component promoters may efficiently improve the catalytic performance of the primary Cu-based catalysts in the Rochow-Müller reaction, but this approach is not well explored, and the roles of the promoters are not very clear. Herein, we report the ZrO 2 -supported CuO catalyst (CuO/ZrO 2 ) modified with a co-promoter of ZnO, Sn, and CuP prepared by a simple dry ball-milling method. The co-promoter could significantly increase the amount of surface adsorbed oxygen and improve the reducing ability of catalysts, facilitating the formation of the active Cu 3 Si phase and further advancing dimethyldichlorosilane ((CH 3 ) 2 SiCl 2 , M2) selectivity and Si conversion in the Rochow-Müller reaction. Compared to the state-of-the-art commercial catalyst, these CuO/ZrO 2 catalysts with the co-promoters all showed enhanced catalytic activity. Especially, the CuO/ZrO 2 catalyst with the co-existence of ZnO, Sn, and CuP promoters achieved the highest M2 selectivity and Si conversion, attributed to its most abundant surface adsorption oxygen and the strongest reducibility. This work opens up a new avenue to improve the catalytic activity of Cu-based catalysts for the Rochow-Müller reaction.
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Energy & Environmental Materials
·
2021
·Vol. 5
·期 1
·353-359
·
IF 15.122
Xingyang Du,Hanying Zhang,Xuexia Lan,Bin Yuan,Renzong Hu
Silicon monoxide (SiO) has aroused increased attention as one of the most promising anodes for high-energy density Li-ion batteries. To enhance the initial Coulombic efficiencies (ICE) and cycle stability of SiO-based anodes, a new facile composition and electrode design strategy have been adapted to fabricate a SiO–Sn–Co/graphite (G) anode. It achieves a unique structure where tiny milled SiO–Sn–Co particles are dispersed among two graphite layers. In this hybrid electrode, Sn–Co alloys promoted Li + extraction kinetics, and the holistic reversibility of SiO and graphite enhanced the electrical conductivity. The SiO–Sn–Co/G electrode delivered an average ICE of 77.6% and a reversible capacity of 640 mAh g −1 at 800 mA g −1 , and the capacity retention was above 98% after 100 cycles, which was much higher than that of the SiO with an ICE of 55.3% and a capacity retention of 50%. These results indicated that this was reliable method to improve the reversibility and cycle ability of the SiO anode. Furthermore, based on its easy and feasible fabrication process, it may provide a suitable choice to combine other alloy anodes with the graphite anode.
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Catalysis Science & Technology
·
2020
·Vol. 10
·期 9
·2986-2993
·
IF 5.721
Wenda Hu,Zixin Chi,Yan Wan,Shuai Wang,Jingdong Lin,Shaolong Wan,Yong Wang
This work presents a novel method to selectively convert levoglucosan to lactic acid (LA) via initially adding LA as the Brønsted acid together with modified Sn-β as the Lewis acid. Sn-β catalysts exchanged with various cations significantly enhance the yield of LA, following the order Sn-β < Sn-β–Na < Sn-β–K < Sn-β–Mg, Sn-β–Ca. The role of exchanged alkali ions stems from removing the remaining Brønsted acid sites in the zeolite and tuning the framework oxygen with more Lewis base sites. The exchange with alkaline earth cations such as Ca2+ and Mg2+ appears to be more effective in promoting the retro-aldol condensation due to the synergetic effect of their stronger Lewis acid that can stabilize the oxygen atom of deprotonated alkoxides during the reaction. The LA yield from levoglucosan can reach up to 66% on Sn-β–Ca under the optimized conditions. We also demonstrated that such a synergetic effect of alkaline-earth ion exchanged Sn-β shows great universality toward enhanced retro-aldol condensation, which can significantly promote the yield of methyl lactate over glucose conversion in methanol solvent.
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APPLIED ORGANOMETALLIC CHEMISTRY
·
2020
·Vol. 34
·期 6
·e5612
·
IF 3.14
Na Zhang,Jiaqi Bu,Yong Meng,Jia Wan,Lu Yuan,Xin Peng
In this study, Ti-Si-Sn-Sb/GAC particle electrodes were prepared by sol–gel method. The particle electrodes were characterized by SEM, XRD, EDX, and BET then used to carry out three-dimensional (3D) electrocatalytic oxidation degradation on simulated refractory p-aminophenol (PAP) wastewater. The effects of initial pH, cell voltage, aeration flow rate and initial PAP concentration on degradation experiments were investigated. Under the optimal conditions, the PAP and COD removal rates were 89.45% and 75.17% respectively. In addition, the possible degradation mechanism of PAP was further investigated by UV–Vis and HPLC. Finally, it was found that the Ti-Si-Sn-Sb/GAC particle electrodes with high catalytic activity and excellent stability could significantly improve the PAP wastewater removal efficiency.
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Journal of Materials Chemistry A
·
2023
·Vol. 11
·期 43
·23342-23353
·
IF 11.9
Zhihui Ma,Jie Shi,Di Wu,Dishuang Chen,Shuai Shang,Xuanhui Qu,Ping Li
The sulfide-based solid electrolyte (SSE) has been considered as a strong candidate for potential uses in all-solid-state lithium batteries (ASSLBs). Nevertheless, most of the reported SSEs are plagued with their intrinsic air-sensitive behaviors and Li-incompatibility, which largely preclude scalable fabrication and widespread practical application. Herein, we report the Li6+xSb1−xSnxS5I (LSSSI-x) SSEs using nontoxic inexpensive Sn substitution to deal with these issues. The ionic conductivity of Li6+xSb1−xSnxS5I can achieve a maximum value of 3.49 × 10−4 S cm−1 at room temperature when x = 0.4, which is over 40-fold that of the pristine Li6SbS5I. The Li symmetric cell with I-rich Li6.4Sb0.6Sn0.4S5I (LSSSI-0.4) electrolyte delivers a stable Li+ plating/stripping behavior over 450 h at a current density of 0.1 mA cm−2. Benefiting from the decent Li-compatibility of LSSSI-0.4, the assembled ASSLB with LiNi0.8Co0.1Mn0.1O2-based composite cathode and Li-metal anode displays good cycling performance. The LSSSI-0.4 electrolyte also possesses excellent moisture stability. ASSLB using the dried LSSSI-0.4 electrolyte still exhibits a well-maintained initial discharge capacity of 184.0 mA h g−1 at 0.1C and an impressive capacity retention rate of 70.6% after 600 cycles at 0.2C. This work offers a feasible option with superior integrated properties to push forward the advancement of high-performance ASSLBs.
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ChemNanoMat
·
2023
·Vol. 9
·期 4
·e202300037
·
IF 3.8
Yiqi Liang,Jun Wang,Zhidong Tian,Kezheng Shang,Xiang Hu,Jiaqi Yu,Pingwei Cai,Yangjie Liu,Jun Yuan,Yichun Ding,Zhenhai Wen
Graphical The development of Zn ion energy storage devices is seriously hindered by the drawbacks of dendrite growth, low coulomb efficiency, and volume expansion in the plating/stripping process of Zn metal electrodes. In this paper, the electrode which optimized by chemically plating Sn on Cu foam with high surface area and high HER overpotential can provide a large number of active sites for homogeneous nucleation of Zn metal and alleviate HER side reactions, thus improving the reversibility of Zn electrodeposition. Zn ion energy storage devices have received widespread attention because of their high safety, environmental friendliness, low cost, and high energy density. However, Zn metal anodes usually suffer from disadvantages such as dendrite growth, low coulombic efficiency, and volume expansion during plating/stripping, which severely hampers the practical applications. Here, we construct 3D Zn frameworks by exploring different conductive hosts and modify 3D hosts by plating Sn to suppress Zn dendrites and side reactions. The electrode which optimized by electroplating Zn after chemically plating Sn on Cu foam (Sn−Cu foam@Zn) exhibits stable polarization voltage distribution and almost 100% coulombic efficiency over 200 cycles of Zn plating/stripping. Furthermore, when pairing with V 2 O 5 cathode, the full cell showed fast reaction kinetics and a capacity of 113 mAh g −1 after 1000 cycles at a current density of 1 A g −1 , which is 90.4% of the initial capacity. This work provides a new strategy for the development of high-performance Zn anodes.
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