Nano Research
·
2023
·Vol. 16
·期 7
·9507-9518
·
IF 9.9
Wu Hao,Song Ziyu,Feng Wenfang,Zhou Zhibin,Zhang Heng
Rechargeable lithium metal batteries (RLMBs) have been regarded as promising successors for contemporary lithium-ion batteries, in view of their high gravimetric and volumetric energy densities. Conventional non-aqueous liquid electrolytes containing organic carbonate solvents possess high chemical reactivities with metallic lithium anode and high flammability, which induces considerable safety threats under extreme conditions (e.g., overcharging and thermal runaway). Herein, we propose the utilization of fluorinated sulfonamide (i.e., N,N-dimethyl fluorosulfonamide (DMFSA)) as solvent, together with lithium (fluorosulfonyl)( n -nonafluorobutanesulfonyl)imide (LiFNFSI) as co-salt and/or electrolyte additive for accessing safer and high-performing RLMBs. Comprehensive physical (e.g., thermal transition, viscosity, and ionic conductivity) and electrochemical (e.g., anodic stability on different electrodes) characterizations have been performed, aiming to reveal the inherent characteristics of the sulfonamide-based electrolytes and the particular role of LiFNFSI on the stabilization of LiCoO 2 cathode. It has been demonstrated that the sulfonamide-based electrolytes exhibit superior flame-retardant abilities and decent ionic conductivities (> 1 mS·cm −1 at room temperature). The incorporation of LiFNFSI as co-salt and/or electrolyte additive could significantly suppress the side reactions occurring at the cathode compartment, through the preferential decompositions of the FNFSI − anion. This work is anticipated to give an in-depth understanding on the working mechanism of LiFNFSI in the sulfonamide-based electrolytes, and also spurs the development of high-energy and safer RLMBs.
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Small
·
2024
·Vol. 20
·期 26
·2310226
·
IF 13
Zhongwei Man,Zheng Lv,Yangyang Cao,Zhenzhen Xu,Qing Liao,Jiannian Yao,Feng Teng,Aiwei Tang,Hongbing Fu
Organic afterglow materials have significant applications in information security and flexible electronic devices with unique optical properties. It is vital but challenging to develop organic afterglow materials possessing controlled output with multi-stimuli-responsive capacity. Herein, dimethyl terephthalate (DTT) is introduced as a strong proton acceptor. The migration direction of N─H protons on two compounds Hs can be regulated by altering the excitation wavelength (Ex) or amine stimulation, thereby achieving dual-stimuli-responsive afterglow emission. When the Ex is below 300 nm, protons migrate to S 1-2 DTT , where strong interactions induce phosphorescent emission of Hs , resulting in afterglow behavior. Conversely, when the Ex is above 300 nm, protons interact with the S 0 DTT weakly and the afterglow disappears. In view of amine-based compounds with higher proton accepting capabilities, it can snatch proton from S 1-2 DTT and redirect the proton flow toward amine, effectively suppressing the afterglow but obtaining a new redshifted fluorescence emission with Δλ over 200 nm due to the high polarity of amine. Moreover, it is successfully demonstrated that the applications of dual-stimuli-responsive organic afterglow materials in information encryption based on the systematic excitation-wavelength-dependent (Ex-De) behavior and amine selectivity detection.
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MICROPOROUS AND MESOPOROUS MATERIALS
·
2020
·
IF 4.551
Jing Hao,Dang-guo Cheng,Fengqiu Chen,Xiaoli Zhan
To explore the effect of channel properties on catalytic activity, ZSM-5 zeolite nanosheets were synthesized with di-quaternary ammonium-type surfactant and used in n-heptane cracking reaction. Nanosheet thickness was changed from around 4 nm–20 nm by adjusting the ratio of surfactant to tetraethyl orthosilicate (TEOS). The synthesized zeolite nanosheets were characterized by physical and chemical adsorption , electron microscopy , X-ray diffraction (XRD), pyridine infrared (Py-IR), Thermogravimetric analysis (TGA) and Raman spectra. The results showed that zeolite with thicker nanosheets had more microporosity and was more conducive to remarkably improving the selectivity of light olefins . High mesoporosity of zeolite nanosheets greatly reduces the diffusion resistance and accelerates mass transfer which even increases the direct diffusion of insufficiently cracked intermediates. Thicker zeolite nanosheets with more micropores prolong the reaction time and thus improve the selectivity of target products.
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Acta Biomaterialia
·
2025
·
IF 9.6
Kaiguo Xia,Guang Chen,Bingbing Hou,Zhe Wang,Yaqi Zhu,Yuexian Xu,Shanfu Zhang,Qiang Xuan,Yezi You,Zongyao Hao
A ureteral stent with strong resistance to proteins, bacteria, and multivalent ions is crucial for the safe treatment of urologic diseases. Generally, the proteins, bacteria, and multivalent ions present in urine tend to bind to the stent surface, leading to aggregation, nucleation, and subsequent stent encrustation. Stent encrustation can induce or exacerbate urinary tract infections and obstructions, thereby seriously harming kidney function. Although hydrophilic coatings on ureteral stents can reduce the binding of proteins, bacteria, and multivalent ions, encrustation still occurs. To date, preventing stent encrustation formation remains a significant challenge. Here, we grafted dense trimethylamine oxide (TMAO)-derived zwitterionic polymers onto the stent surface via a branched amplification strategy. These zwitterions can strongly bind water molecules, forming a stable hydration shell that repels proteins, bacteria, and multivalent ions from adhering to the surface of the polyurethane ureteral stent, thus rendering the stent anti-encrustation. The results showed that the TMAO-derived zwitterion-coated stents exhibited a significantly reduced encrustation weight (13.8% of the original polyurethane stent) and demonstrated good safety. This approach offers a promising method for enhancing stent encrustation resistance. Statement of Significance This study successfully developed a TMAO-derived zwitterionic coating on the surface of a polyurethane stent, creating a superhydrophilic surface with a minimal contact angle of 5.2 o . This surface effectively shields the stent from interactions with proteins, bacteria, and multivalent ions in urine, demonstrating favorable anti-protein adsorption and antibacterial adhesion properties. The superhydrophilic surface formed by the TMAO-derived zwitterionic coating on the stents (PTMAO-s) provides strong anti-fouling resistance and enhanced anti-encrustation properties. Under identical conditions, the encrustation resistance of PTMAO-s is approximately 7.2-fold greater than that of original polyurethane stents (PU), 3.6-fold greater than Bard commercial stents, and 2.1-fold greater than betaine-coated stents (PSBG-s).
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Polymers
·
2025
·Vol. 17
·期 9
·1198
·
IF 4.9
Baoning Zhu,Jinghua Liu,Qijun Zhong,Yaru Wen,Qianqian Dong,Yuhao Li,Qianqian Jin,Yao Lu
Heteroatom-doped biomass-derived porous carbon materials show promising applications as electrode components in energy storage technologies. In this investigation, we present a template-assisted pyrolysis procedure to fabricate nitrogen–oxygen dual-doped carbon materials. Firstly, the precursor and template initially polymerized to form a white jelly-like gel, which was freeze-dried to create a nanosheet-assembled structure. Subsequent high-temperature pyrolysis induced the formation of a porous structure with nanosheet morphology. The CMC-ZnK sample derived from the dual template of potassium citrate and zinc acetate pyrolyzed at 800 °C exhibits optimal electrochemical performance, delivering a specific capacitance of 271.4 F g−1at 1 A g−1in a three-electrode configuration, along with outstanding rate capability (90% retention, 244 F g−1at 10 A g−1). The constructed supercapacitor demonstrated an energy density of 6.5 Wh kg−1under a power density of 500 W kg−1. Furthermore, this study systematically investigated the performance variation mechanisms at different temperatures, revealing the relationship between structural composition and temperature in biomass materials.
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JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Xu Liu,Jingzhe Li,Zewang Liu,Guang-zai Nong
The interfacial tuning of carbon materials is paramount to enhancing capacitive performance. Heteroatom doping significantly alters carbon materials' structural, electronic, and surface properties, improving their electronic conductivity and ion transport pathways. This process also introduces additional energy storage sites and improves structural stability to meet the requirements of advanced electrochemical energy storage systems. A N/Cl co-doped porous carbon material has been synthesised in this study. The material has a surface area of 1849.778 m 2 /g and a specific capacitance of up to 324 F/g at 0.5 A/g. Capacitance retention was as high as 89.69 % after 5000 cycles at 10 A/g. Furthermore, a symmetric supercapacitor based on BC121–800 exhibits an energy density of 11.6 Wh/Kg at a power density of 250.4 W/Kg. This study contributes novel strategies to enhance energy storage technologies.
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INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Liying Zhang,Hanchen Wang,Zhenghan Cai,Feng Zhu,Biao Huang,Qi-Lin Lu
The construction of hierarchically porous carbon with a rational pore distribution using environmentally benign activators, while simultaneously incorporating heteroatom doping, is crucial for the preparation of electrode materials for supercapacitors. Here, a green one-step method has been developed that utilizes a biomass derivative, chitosan, as the matrix to construct a nitrogen-doped carbon framework, with polyethyleneimine (PEI) for synergistic nitrogen doping and hydrogen bonding interactions to optimize the carbon framework. Phytic acid (PA) is employed as a phosphorus source, activator, and crosslinker to build hierarchical porous carbon containing phosphorus doping, while carboxylated nanocellulose (CNC) is introduced to regulate the uniformity of the pore structure. The resulting HPC exhibits a specific surface area of 939.87 m²/g, a total pore volume of 0.45 cm³ /g, and a high specific capacitance of 350 F/g at a current density of 1 A/g. Furthermore, the HPC supercapacitor assembled at this current density demonstrates an energy density of 18.3 Wh/kg at a power density of 450 W/kg, with a capacitance retention rate of 86 % and a coulombic efficiency of 97 % after 10,000 cycles. Therefore, the approach in this study, which involves the use of PA to activate carbon precursors while incorporating heteroatom doping and adding CNC to promote uniform heteroatom doping, provides valuable insights for the facile, efficient, and green synthesis of biomass-based porous carbon materials, and contributes to energy storage applications.
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Science Advances
·
2025
·Vol. 11
·期 32
·
IF 12.5
Runchuan Yan,Yan Zhang,Jingjing Zhang,Xiangyi Zhang,Yue Han,Mengfei Wang,Dan Wang,Shengnan Huang,Wei Liu,Qi Shi,Xiaoping Dong,Wen-Quan Zou,Zhen Li,Jiyan Ma
Rapid neurodegeneration distinguishes prion disease from other neurodegenerative disorders. Notably, normal prion protein (PrP C ) is essential for prion-induced rapid neurodegeneration, but the underlying mechanism remains unknown. Here, we show that the unstructured N-terminal region of PrP C induces rapid and lethal neurodegeneration in mice, accompanied by the hallmark of prion disease, spongiosis. The neurotoxic N-terminal PrP is soluble, associates peripherally with lipid membranes, and induces neurotoxicity only when a critical threshold is exceeded. Both the N-terminally localized KKRPKP sequence and octarepeats contribute to neurotoxicity, with KKRPKP being essential. Without it, the N-terminal PrP is innocuous but exacerbates either neurodegeneration caused by N-terminal PrP or neurodegeneration in prion disease induced by intracerebral prion inoculation in mice. Our findings establish that soluble N-terminal PrP causes rapid neurodegeneration in prion disease and is a target for intervention.
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ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Tao Chen,Shujin Li,Ke Chen,Mazhar Hussain Danish,Hui Liu,Di Li,Hongxing Xin,Yongsheng Zhang,Jian Zhang,Xiaoying Qin
Bi2Te3-based thermoelectric (TE) materials are the state-of-the-art compounds for commercial applications near room temperature. Nevertheless, the application of the n-type Bi2Te2.7Se0.3 (BTS) is restricted by the comparatively low figure of merit (ZT) and intrinsic embrittlement. Here, we show that through dispersion of amorphous Si3N4 (a-Si3N4) nanoparticles both 14% increase in power factor (at 300 K) and 48% decrease in lattice thermal conductivity are simultaneously realized. The increased power factor comes from enhanced thermopower and reduced electrical resistivity while the reduced lattice thermal conductivity originates mainly from scattering of middle- and low-frequency phonons at the incorporated a-Si3N4 nanoparticles. As a result, a large ZTmax = 1.19 (at 373 K) and an average ZTave ∼ 1.12 (300–473 K) with better mechanical properties are achieved for the BTS/0.25 wt % Si3N4 sample. Present results demonstrate that the incorporation of a-Si3N4 is a promising way to improve TE performance.
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DIAMOND AND RELATED MATERIALS
·
2024
·
IF 4.3
Shuai Yang,Tao Li,Jun Fang,Shichong Yao,Zhenyu Li,Yunyun Liu,Jie Chen,Yuanliang Yuan,Xiaocong Zhong
N,O-codoped microporous carbon (HPC) was derived from hypnum plumaeforme via precarbonization and KOH activation and utilized as an electrode for supercapacitors. The HPC750 sample, produced at an activation temperature of 750 °C, demonstrated superior capacitive behavior due to its large specific surface area, microporous architecture, and high number of oxygen and nitrogen heteroatoms. These HPC750 electrodes have a specific capacitance of up to 424 F g −1 at a current density of 1 A g −1 while also providing excellent rate performance, maintaining >85 % capacitance over a range of 1 to 100 A g −1 . In a symmetric supercapacitor configuration using 6 M KOH and 1 M Na 2 SO 4 as electrolytes, the HPC750 electrodes exhibit high specific capacitances of 96.2 F g −1 and 65.8 F g −1 at a current density of 1 A g −1 , respectively. With the Na 2 SO 4 electrolyte, the device achieved a peak energy density of 29.9 W h kg −1 and a peak power density of 225 W kg −1 . In addition, the electrodes retained approximately 90 % of their initial capacitance after 15,000 cycles at a current density of 5 A g −1 .
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SENSORS
·
2025
·Vol. 25
·期 8
·2508
·
IF 3.5
Hanxue Yang,Chao Rong,Shundong Ge,Tao Wang,Bowei Zhang,Fu-Zhen Xuan
HighlightsWhat are the main findings?3D crumpled MXene with strain wrinkles enhances conductivity and prevents restacking.Cu nanoclusters (3.0 wt%) synergize N-doping for noble metal-like catalytic activity.What is the implication of the main finding?Ultrasensitive dual-analyte non-enzymatic detection of DA/UA with anti-interference capability and rapid response.Novel material design strategies provide new approaches for the development of future high-performance sensors.Simultaneous detection of dopamine (DA) and uric acid (UA) is essential for diagnosing neurological and metabolic diseases but hindered by overlapping electrochemical signals. We present an ultrasensitive electrochemical sensor using copper nanoclusters anchored on nitrogen-doped crumpled Ti3C2TxMXene (Cu-N/Ti3C2Tx). The engineered 3D crumpled architecture prevents MXene restacking, exposes active sites, and enhances ion transport, while Cu nanoclusters boost electrocatalytic activity via accelerated electron transfer. Structural analyses confirm uniform Cu dispersion (3.0 wt%), Ti-N bonding, and strain-induced wrinkles, synergistically improving conductivity. The sensor achieves exceptional sensitivity (1958.3 and 1152.7 μA·mM−1·cm−2for DA/UA), ultralow detection limits (0.058 and 0.099 μM for DA/UA), rapid response (<1.5 s), and interference resistance (e.g., ascorbic acid). Differential pulse voltammetry enables independent linear detection ranges (DA: 2–60 μM; UA: 5–100 μM) in biofluids, with 94.4% stability retention over 7 days. The designed sensor exhibits excellent capabilities for DA and UA detection. This work provides a novel design strategy for developing high-performance electrochemical sensors.
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ACS Applied Nano Materials
·
2025
·
IF 5.5
Yue Guo,Chengyan Liu,Geng Cheng,Huimin Zhou,Ke Zhang,Guodong Yang,Yan Li,Jianhua Zhou,Lei Miao,Dong Hu
Lithium−oxygen batteries (LOBs) are considered promising candidates for next-generation energy storage systems due to their ultrahigh theoretical energy density. However, their practical application is challenged by sluggish reaction kinetics and unstable discharge product formation. Herein, we report the rational nanoscale engineering of a Bi2Se3/Bi2O3 heterostructured cathode via a controlled hydrothermal synthesis, addressing these limitations. The type-I band alignment in nanocomposite Bi2Se3/Bi2O3 generates a built-in electric field at the heterointerface, facilitating electron and ion transport and lowering the energy barriers for oxygen reduction (ORR) and evolution (OER) processes. Consequently, the Bi2Se3/Bi2O3 heterointerface catalyst exhibits exceptional specific capacity (19433.6 mAh g−1) and cycle stability (201 cycles at 200 mA g−1; 98 cycles at 1000 mA g−1), surpassing pristine Bi2Se3 by 320% in cycle life. This study establishes heterointerface engineering as a universal strategy for developing high-performance LOB catalysts.
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