Journal of Materials Chemistry A
·
2025
·
IF 9.5
Wenwen Yin,Jiawei Ma,Yanyan Li,Qing Cheng,Bernt Johannessen,Fangxi Xie,Mingmei Wu
Exploiting bifunctional and highly efficient electrocatalysts that can facilitate the reversible formation and decomposition of discharge products is crucial for rechargeable Na-air batteries (SABs). However, restricted by scaling relations, air cathodes based on single metal systems usually exhibit inferior activity and fail to achieve a stable and long cycle life of Na-air batteries. Dual single-atom catalysts (DACs) with two metal sites can circumvent the scaling relations and endow the single-atom catalysts with superior activity. Herein, we present a hollow carbon microsphere loaded with Ni and Fe single atoms (Ni-HCMs-Fe) as a demonstration of DAC air cathodes for SABs. Notably, Na-air batteries with Ni-HCMs-Fe as an air cathode can achieve a low overpotential gap of 530 mV, a high specific capacity of 5382.9 mAh g−1, and an ultralong cycle life of over 450 cycles (1800 hours) with NaO2 as the main discharge product. Due to the different adsorption energies between oxygenated intermediates and Ni/Fe sites, the Ni-HCMs-Fe catalysts can break through the scaling relations and display optimized binding ability towards intermediates, thus boosting the reversible formation and decomposition of NaO2 in SABs. This work pioneers the use of DACs in SABs, paving the way for their practical applications.
研究领域:
电化学
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能源材料
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纳米催化
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先进电池技术
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产品关联
DOI
高影响因子
LANGMUIR
·
2024
·
IF 3.7
Jiayu Li,Haoxu Zhan,Bingjun Su,Yiqun Yao,Yiran He,Wu Zhang,Zeqiang Zhong,Lei Li,Dongyan Zhang,Hao Yang,Chao Li
Sodium manganese hexacyanoferrate, also called Prussian white (PW), has attracted much attention as a promising cathode material for Na-ion batteries due to its high-voltage platform and inexpensive elemental composition. However, their parasitic vacancies and water molecules often deteriorate the electrochemical performance. Proper regulation of such defects in scale-up preparation is still a challenge. In this work, PW was prepared via aqueous precipitation assisted by manganese oxalate in a 10 L reactor. High-quality Na2.32Mn[Fe(CN)6]0.95□0.05·1.97 H2O was obtained and exhibited a specific capacity of 148 mAh g–1. The phase transition from monoclinic to rhombohedral during long-term cycling for such an ultra-Na-rich cathode has been first reported. In addition, the vacuum drying temperature was further discussed, and 150 °C is more suitable for achieving the balance between dehydration and electrical properties.
研究领域:
材料科学
·
电化学
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DOI
PubMed
高影响因子
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
·
2024
·Vol. 121
·期 23
·e2320012121
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IF 9.4
Xin He,Youxuan Ni,Wenjiao Ma,Qiu Zhang,Zhenkun Hao,Yunpeng Hou,Haixia Li,Zhenhua Yan,Kai Zhang,Jun Chen
Rechargeable sodium-oxygen (Na–O2) battery is deemed as a promising high-energy storage device due to the abundant sodium resources and high theoretical energy density (1,108 Wh kg–1). A series of quasisolid electrolytes are constantly being designed to restrain the dendrites growth, the volatile and leaking risks of liquid electrolytes due to the open system of Na–O2 batteries. However, the ticklish problem about low operating current density for quasisolid electrolytes still hasn’t been conquered. Herein, we report a rechargeable Na–O2 battery with polyvinylidene fluoride-hexafluoropropylene recombination Nafion (PVDF–HFP@Nafion) based quasisolid polymer electrolyte (QPE) and MXene-based Na anode with gradient sodiophilic structure (M-GSS/Na). QPE displays good flame resistance, locking liquid and hydrophobic properties. The introduction of Nafion can lead to a high Na+ migration number (tNa+ = 0.68) by blocking the motion of anion and promote the formation of NaF-rich solid electrolyte interphase, resulting in excellent cycling stability at relatively high current density under quasisolid environment. In the meantime, the M-GSS/Na anode exhibits excellent dendrite inhibition ability and cycling stability. Therefore, with the synergistic effect of QPE and M-GSS/Na, constructed Na–O2 batteries run more stably and exhibit a low potential gap (0.166 V) after an initial 80 cycles at 1,000 mA g–1 and 1,000 mAh g–1. This work provides the reference basis for building quasisolid state Na–O2 batteries with long-term cycling stability.
研究领域:
材料科学
·
电化学
·
能源存储
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DOI
高影响因子
ELECTROCHIMICA ACTA
·
2019
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IF 5.383
Ranran Li,Yanying Liu,Zhen Wang,Jianling Li
Sodium-ion batteries (SIBs) have been considered to be an appealing alternative as alternatives for Lithium-ion batteries (LIBs) on account of abundant resources and low prices. Different cathode materials have been extensively studied, especially layered oxides (P2 or O3). However, it is crucial to design an appropriate cathode material for SIBs with excellent comprehensive performance. Herein, a biphasic cathode material with P2 and O3 structures is successfully synthesized by Sn substitution in Na 0.67 Ni 0.33 Mn 0.67 O 2 , which is clearly proved by the XRD and HRTEM results. And Fullprof program refinement is used to determine the optimal phase ratio of P2 and O3. Besides, the XRD tests at different voltages illustrate that the cathode material has good reversibility and structural stability during charge and discharge. Due to the synergistic effect of P2 and O3 phase, when the phase ratio is about 1:1, the biphasic material P2/O3–Na 0.67 Ni 0.33 Mn 0.57 Sn 0.1 O 2 exhibits the most outstanding electrochemical performance. The P2/O3–Na 0.67 Ni 0.33 Mn 0.57 Sn 0.1 O 2 cathode delivers a high reversible initial capacity of 155.2 mA h g −1 during the voltage range from 2.0V up to 4.3V with an excellent initial Coulombic efficiency of 98.95%, as well as the satisfactory rate performances and cycling performance. GITT testing also demonstrates the D Na+ of biphasic material is more stable and conducive to the diffusion of sodium ions . These results will pave a significant way for designing cathode material for SIBs with different structure by the substitution of transition metal elements.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
TECHNOLOGY IN CANCER RESEARCH & TREATMENT
·
2021
·
IF 3.399
Yayan Yang,Qian Feng,Chuanfeng Ding,Wei Kang,Xiufeng Xiao,Yongsheng Yu,Qian Zhou
Although Epirubicin (EPI) is a commonly used anthracycline for the treatment of breast cancer in clinic, the serious side effects limit its long-term administration including myelosuppression and cardiomyopathy. Nanomedicines have been widely utilized as drug delivery vehicles to achieve precise targeting of breast cancer cells. Herein, we prepared a DSPE-PEG nanocarrier conjugated a peptide, which targeted the breast cancer overexpression protein Na+/K+ ATPase α1 (NKA-α1). The nanocarrier encapsulated the EPI and grafted with the NKA-α1 targeting peptide through the click reaction between maleimide and thiol groups. The EPI was slowly released from the nanocarrier after entering the breast cancer cells with the guidance of the targeting NKA-α1 peptide. The precise and controllable delivery and release of the EPI into the breast cancer cells dramatically inhibited the cells proliferation and migration in vitro and suppressed the tumor volume in vivo. These results demonstrate significant prospects for this nanocarrier as a promising platform for numerous chemotherapy drugs.
研究领域:
药学
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癌症研究
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纳米技术
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药物递送系统
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DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Zilong Han,Yan Zhou,Rongting Ji,Kaixiang Jiang,Dinghao Liu,Changhai Ji,Zhe Li,Wei Zhang,Bin Xu,Wenzhong Yang
The large-scale discharge of Na + -rich wastewater has intensified the global freshwater crisis. Flow-electrode capacitive deionization (FCDI) offers a promising electrosorption technology for desalination. Lignin is the representative by-product of the papermaking industry, and lignin-derived biochar has been intensively investigated as an active material for flow-electrode material. In this study, we proposed a facile dual-salt (KCl and LiCl) catalysis method during hydrothermal carbonization to prepare lignin-derived biochar (Li-K-LCN). The characterization results showed that the dual-salt catalysts exerted combined effect by physical structure optimization and surface chemical modification based on the cleavage of low bond energy moieties (β-O-4 ether bond and methoxyl group) in the lignin structure. When employed in a flow-electrode capacitive deionization (FCDI) system for Na + removal, Li-K-LCN electrode achieved a stable removal efficiency of over 83.3%, an electrosorption capacity of 26.03 mg g −1 , and low energy consumption of 0.015 J mg −1 . Toxicity tests indicated a preliminary favorable improvement in the environmental safety of the treated effluent. This work presented a simple and efficient dual-salt catalysis method to synthesize lignin-derived biochar towards competitive Na + removal via FCDI, achieving the goal of a low-cost, high-value-added by-product lignin utilization.
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DOI
高影响因子
Nanomaterials
·
2021
·Vol. 11
·期 8
·1932
·
IF 5.076
Leqiang Wu,Hengjia Shao,Chen Yang,Xiangmin Feng,Linxuan Han,Yanli Zhou,Wei Du,Xueqin Sun,Zhijun Xu,Xiaoyu Zhang,Fuyi Jiang,Caifu Dong
To date, the fabrication of advanced anode materials that can accommodate both Na+and K+storage is still very challenging. Herein, we developed a facile solvothermal and subsequent annealing process to synthesize SnS2/RGO composite, in which SnS2nanosheets are bonded on RGO, and investigated their potential as anodes for Na+and K+storage. When used as an anode in SIBs, the as-prepared SnS2/RGO displays preeminent performance (581 mAh g−1at 0.5 A g−1after 80 cycles), which is a significant improvement compared with pure SnS2. More encouragingly, SnS2/RGO also exhibits good cycling stability (130 mAh g−1at 0.3 A g−1after 300 cycles) and excellent rate capability (520.8 mAh g−1at 0.05 A g−1and 281.4 mAh g−1at 0.5 A g−1) when used as anode for PIBs. The well-engineered structure not only guarantees the fast electrode reaction kinetics, but also ensures superior pseudocapacitance contribution during repeated cycles, which has been proved by kinetic analysis.
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DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Xinyi Pan,Wangwang Xu,Anzheng Chang,Jia Yue,Tianshuo Yang,Wuhai Yang,Dong Wang,Faming Gao
Hard carbon, one of the most commercially promising anode materials for sodium-ion batteries (SIBs), faces challenges in balancing rate performance, initial cycle charge efficiency (ICE), and reversible capacity. To enhance specific capacity and achieve high ICE, it is essential to construct hard carbon with abundant sodium-active sites and a controllable graphitization degree. This work presents a comprehensive approach to microstructural regulation of hard carbon through in situ doping and subsequent removal, which introduces active sites and optimizes the microporous structure. It overcomes the limitations of traditional templating methods, such as excessive specific surface area, which leads to low initial coulombic efficiency and poor cycling performance. This method yields high reversible capacity (419.3 mAh g −1 @0.05 A g −1 ), excellent ICE (95.88%), and outstanding cycling stability. This study presents a viable approach to enhancing the performance of porous hard carbon. It offers a rational design strategy for optimizing HC structures, improving sodium storage performance, and facilitating their practical applications.
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产品关联
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Guojun Zhou,Xingxing Jiang,Jing Zhao,Maxim Molokeev,Zheshuai Lin,Quanlin Liu,Zhiguo Xia
Topological chemical reaction methods are indispensable for fabricating new materials or optimizing their functional properties, which is particularly important for two-dimensional (2D)-layered compounds with versatile structures. Herein, we demonstrate a low-temperature (∼350 °C) ion exchange approach to prefabricate metastable phosphors ALa1–xTa2O7:xBi3+ (A = K and Na) with RbLa1–xTa2O7:xBi3+ serving as precursors. The as-prepared ALa0.98Ta2O7:0.02 Bi3+ (A = Rb, K, and Na) share the same Dion–Jacobson type 2D-layered perovskite phase, and photoluminescence analyses show that ALa0.98Ta2O7:0.02 Bi3+ (A = Rb, K, and Na) phosphors exhibit broad emission bands peaking at 540, 550, and 510 nm, respectively, which are attributed to the nonradiative transition of Bi3+ from excited state 3P1 or 3P0 to ground state 1S0. The various Bi3+ local environments at the crystallographic sites enable the different distributions of emission and excitation spectra, and the photoluminescence tuning of ALa0.98Ta2O7:0.02 Bi3+ (A = Rb, K, and Na) phosphors are realized through alkali metal ion exchange. Notably, the combination of superior trivalent bismuth emission and low-temperature ion exchange synthesis leads to a novel yellow-emitting K(La0.98Bi0.02)Ta2O7 phosphor which is successfully applied in a white LED device based on a commercially available 365 nm LED chip. Our realizable cases of this low-temperature ion exchange strategy could promote exploration into metastable phosphors with intriguing properties.
研究领域:
材料科学
·
光电子学
·
无机化学
·
发光材料
·
固态化学
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Lingli Shen,Wanqi Feng,Dan Yu,Wei Wang
Flexible humidity sensors with excellent flexibility and sensitivity have been widely used in various fields such as human and plant health monitoring and management, non-contact human-machine interaction, smart e-textiles, and industrial and agricultural production. However, many sensors are limited their application due to the problems of unbreathable and poor wear comfort. Herein, a highly sensitive humidity sensor based on flexible polyester fabric with directional moisture transport is proposed. The facile method of coating is conducted by the preparation of poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) and sodium carboxymethylcellulose (CMC-Na) paste with adjustable content and applied to the polyester fabric. The difference of hydrophilicity between the two sides of the fabric caused by the coating helps to directional moisture transport, thus giving rapid sensitivity, while using PEDOT: PSS can obtain the changes of electrical conductivity coming from the humidity. and the addition of CMC-Na not only helps the coating, but also provides hydrophilic groups, which is conducive to humidity sensing and directional moisture transport. The combination of this moisture-sensitive coating and directional moisture transport gives the sensor a fast humidity response time of 0.35 s, a wide humidity detection range (0‐100%(0–100% RH) and sensitivity of 4.15. Furthermore, the sensor can maintain the humidity response time in milliseconds even after being subjected to water washing and friction, indicating its excellent durability and stability.
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产品关联
DOI
高影响因子
BIORESOURCE TECHNOLOGY
·
2023
·
IF 11.4
Huan Yan,Liang Xu,Junfeng Su,Hao Wei,Xuan Li
To improve the efficiency of aerobic digestion, this investigation utilized the synergistic effect of lysozyme-producing strain YH14 and surfactant-producing strain ZXY4 to promote sludge hydrolysis, and added NaCl to enhance this promoting effect. The best performance in promoting sludge hydrolysis was achieved when the inoculum of functional bacteria was 12 % (inoculum ratio of strain YH14: strain ZXY4 = 1:3) and the dosage of NaCl was 5 g L -1 , which caused an increase of 19.25 % in the SS removal rate and 2588.21 mg L -1 in the SCOD release, as compared with the control. Fluorescence region integral analysis shows that the synergy of two functional bacteria and NaCl can enhance the biodegradability of sludge. Protein secondary structure analysis shows that strain ZXY4 and Na + cause the EPS structure to loosen, increasing the chances of lysozyme lysis of bacteria. Nucleotide metabolism, metabolism of other amino acids and membrane transport enhanced in a co-processing system.
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Jianhui Zhu,Linchao Zeng,Yumin Song,Feng Peng,Yanyi Wang,Tingshu He,Libo Deng,Peixin Zhang
Room-temperature sodium-sulfur (RT Na-S) batteries have been attracting enormous interests due to their low-cost, high capacity and environmental benignity. However, the shuttle effect and the sluggish electrochemical reaction activity of sodium polysulfides (NaPSs) seriously restrict their practical application. To solve these issues, we rationally designed an advanced Sn-doped In 2 S 3 /S/C cathode for RT Na-S batteries by magnetron sputtering in this work, which exhibited a high reversible capacity (1663.5 mAh g −1 at 0.1 A g −1 ) and excellent cycling performance (902.9 mAh g −1 after 50 cycles). The in situ electrochemical impedance spectroscopy indicated that the Sn-doped In 2 S 3 coating can accelerate charge-transfer kinetics and facilitate the diffusion of Na + . Furthermore, theoretical calculation revealed that doping of Sn into In 2 S 3 can reduce the energy band gap, thus accelerating the electron transfer and promoting the electrochemical conversion of active species. It is demonstrated that adjusting the electronic structure is a reliable method to improve the electrocatalytic effect of catalyst and significantly improve the performance of S cathode in RT Na-S batteries.
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DOI
PubMed
高影响因子
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