ChemistrySelect
·
2025
·Vol. 10
·期 16
·e202500414
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IF 2
Qianqian Ma,Yilin Wang,Zonglin Yi,Lijing Xie,Fangyuan Su,Guohua Sun,Gongling Hui,Wei Xie,Chengmeng Chen,Yaqin Hou
Graphical This study prepares phenolic resin-based carbon microspheres featuring small size (2–4 µm), monodispersity, and narrow particle size distribution by regulating the catalyst content. Subsequently, it explores the differences in sodium storage behavior. The optimal sample exhibits a plateau region capacity proportion of 75.6% and an initial Coulombic efficiency (ICE) of 85.02%. Phenolic resin is considered a promising precursor for advanced hard carbon anodes in sodium-ion batteries (NIBs) due to its ease of design, structural stability, and high residual carbon yield. However, the practical application of hard carbon is affected by its closed-pore content and structure. Here, we achieve fine control over the cross-linking structure of phenolic resin precursors by adjusting the catalyst content in the system, followed by high-temperature carbonization to produce phenolic resin-based carbon microspheres with small sizes (2–4 µm), monodispersity, and a narrow spherical diameter distribution. Based on this, we deeply explore the intrinsic relationship between the microstructure of these resin-based carbon microspheres and their sodium storage performance in NIBs. This strategy can provide a feasible molecular cross-linking engineering approach for the development of closed pores in phenolic resin-based hard carbon to tune electrochemical properties such as the plateau region capacity.
研究领域:
材料科学
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电化学
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DOI
高影响因子
Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 47
·18052-18062
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IF 8.067
Yayun Zheng,Xirui Kong,Lang He,Yi Song,Yan Zhao
A facile solid-state Matryoshka doll-like microwave strategy is developed to synthesize composites of NixSey and nitrogen-doped porous carbon (N–C). The crystal structures and morphology of NixSey/N–C are investigated with different feeding mass ratios of Ni/Se and at different microwave processing times. Thereinto, NiSe2/N–C is rapidly prepared in just 20 minutes. The physical–chemical properties of NiSe2/N–C are further investigated and the composite has shown good ion/electron transfer kinetics and structural stability for sodium storage. When employed as the anode of sodium ion batteries (SIBs), NiSe2/N–C shows a high reversible capacity of 374.4 mA h g−1 at 0.2 A g−1 and excellent cycling stability, retaining 95% of its initial capacity at 1.0 A g−1 after 2000 cycles. The good electrochemical performance is attributed to the synergistic effect between the highly active NiSe2 nanoparticles and the 3D conductive N–C frameworks, which expedites the charge-transfer rate and improves the reversibility of the charging/discharging reactions. The excellent Na+ storage kinetics of the NiSe2/N–C electrode results from its low adsorption energy of −0.94 eV and low energy barrier of 0.818 eV. This work provides a feasible microwave synthetic strategy to fabricate SIB electrode materials.
研究领域:
材料科学
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电化学
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DOI
高影响因子
Advanced Energy Materials
·
2018
·Vol. 8
·期 15
·1703217
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IF 21.875
Panxing Bai,Yongwu He,Xiaoxi Zou,Xinxin Zhao,Peixun Xiong,Yunhua Xu
Hard carbons (HCs) are the most promising candidate anode materials for emerging Na-ion batteries (NIBs). HCs are composed of misaligned graphene sheets with plentiful nanopores and defects, imparting a complex correlation between its structure and sodium-storage behavior. The currently debated mechanism of Na + -ion insertion in HCs hinders the development of high-performance NIBs. In this article, ingenious and reliable strategies are used to elaborate the correlation between the structure and electrochemical performance and further illuminate the sodium-storage mechanism in HCs. First, filling sulfur into the micropores of HCs can remove the low-voltage plateau, providing solid evidence for its association with the pore-filling mechanism. Along with the decreased concentration of defects/heteroatoms at higher treatment temperature, the reduced sloping capacity confirms the adsorption mechanism in the sloping region. Finally, the similar sodium-insertion behaviors of HCs with ether-based and ester-based electrolytes indicate that no Na + ions intercalate between the graphene layers. The determined adsorption-pore-filling mechanism encourages the design of more efficient HC anode materials with high capacity for high-energy NIBs.
研究领域:
材料科学
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电化学
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DOI
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
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2016
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IF 2.196
Guangyue Bai,Jianhui Sheng,Yujie Wang,Hui Wu,Yang Zhao,Kelei Zhuo,Margarida Bastos
The thermodynamics of molecular self-assembling of an anionic biosurfactant, sodium cholate (NaCA) and its mixtures with sodium dodecyl sulfate (SDS) in aqueous solution have been investigated by isothermal titration calorimetry (ITC), along with fluorescence and conductivity measurements. Different critical concentrations were obtained by these three techniques – critical pre-micelle concentration (cmc pre ) and critical micelle concentration (cmc) for pure NaCA, and critical micelle concentrations (cmc mix ) for the mixed systems with differently initial SDS concentrations. Importantly, ITC allowed us to directly measure the enthalpy changes of pre-micelle formation (Δ H premic = (−0.28 ± 0.02) kJ·mol −1 ) and of micelle formation (Δ H mic = (−1.76 ± 0.05) kJ·mol −1 ) for pure NaCA as well as the enthalpies for micellization for the mixed systems NaCA/SDS. The non-ideality of the mixed surfactant solution was evaluated in terms of interaction parameters and excess enthalpies that were calculated in the light of Clint’s and Rubingh’s models. It was found that there is an obvious synergistic effect in the NaCA/SDS mixed system. From all these results we can ascribe the strong interaction between the same charge surfactants NaCA and SDS to the structural difference in their hydrophobic moieties. In fact, the flexible alkyl chains of SDS and the non-planar hydrophobic β -faces of NaCA tend to have a more compact packing than pure NaCA.
研究领域:
生物化学
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物理化学
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DOI
高影响因子
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY
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2021
·
IF 2.017
Lilian Yang,Guishang Pei,Youling Hou,Yuntao Xin,Xuewei Lv
Sodium hexatitanate (Na 2 Ti 6 O 13 ) was reported as an anode side material for Sodium ion batteries owing to low material cost, high energy efficiency, good thermal stability and long cycle life. Therefore, studies pertaining to the thermodynamic properties of Na 2 Ti 6 O 13 are indispensable for improving its service performance. However, a significant number of literature reviews concerning thermodynamic properties indicated that heat capacity of Na 2 Ti 6 O 13 at high temperatures should be confirmed. In this study, the 99.5% purity of Na 2 Ti 6 O 13 sample was successfully prepared via solid-state reaction using TiO 2 and Na 2 CO 3 as initial materials. Heat capacity of the as-synthesized samples in the temperature range of 573–1523 K was measured using a multi-high temperature calorimeter 96 line. Heat capacity, Cp, from 298.15 to 1573 K was modeled as a polynomial formula with a prediction error of 3%: Cp = 474.08143 + 0.06286T-8.04068 × 10 6 T −2 (J⋅mol −1 ⋅K −1 ). In combination with the low-temperature data, heat capacity of Na 2 Ti 6 O 13 from 0 to 1573 K was given in present study. Values of changes in enthalpy, Gibbs free energy and entropy in the temperature range of 298.15–1573 K were calculated based on the temperature dependence of heat capacity.
研究领域:
材料科学
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热力学
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DOI
高影响因子
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
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2022
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IF 5.895
Ben Wu,Imre Blank,Yin Zhang,Yuan Liu
Three types of tastants are known as perceptually associated with umami taste: monosodium glutamate (MSG), disodium succinate (WSA), and disodium inosine monophosphate (IMP). While these tastants were confirmed to be perceptually similar in a sensory study, they could be discriminated (p < 0.05) by electroencephalogram (EEG) analysis on a time scale of 5–6 s. In comparison of the EEG responses of the participants, the brain could partly distinguish (p < 0.05) between different sensory intensities of MSG, WSA, or IMP. The EEG data indicated that the brain is partially sensitive to perceiving different sensory intensities (L, low; M, medium; and H, high) of the same umami stimuli; i.e., for MSG in μV2/Hz, L, 2.473 ± 0.181; M, 3.274 ± 0.181; and H, 3.202 ± 0.181. However, brain responses of perceptually equi-umami intensities could partially be discriminated, suggesting that the brain could partially discriminate (p < 0.05) MSG, WSA, and IMP, despite similar sensory intensities. Moreover, umami tastants were also found to significantly enhance (p < 0.05) the α wave activity, with the most responsive being at 10 Hz, particularly in the frontal and parietal and occipital regions of the brain (p < 0.001). This study shows the potential of EEG to investigate brain activity triggered by umami stimuli.
研究领域:
神经科学
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食品科学
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感官研究
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2023
·
IF 15.1
Huangying Wang,Haiyang Yan,Kang Peng,Junying Yan,Rong Fu,Ruirui Li,Baoying Wang,Chenxiao Jiang,Yaoming Wang,Tongwen Xu
The growth of CO 2 emissions is a critical challenge to the global ecological system. Meanwhile, the rising use of evaporation units in industrial wastewater treatment plants has generated a large number of salts with low values for further valorization. In this study, a direct electrochemical substitution electrodialytic system is proposed for the conversion of CO 2 and Na 2 SO 4 into high value-added NaHCO 3 and H 2 SO 4 . The CO 2 is absorbed with polyethyleneimine and further metathesized with inorganic salts in an electrodialytic reactor. This unique system achieves soda preparation by avoiding the use of ammonia as a feedstock and demonstrates the ability to capture and convert CO 2 at a specific energy consumption of 1.2 kWh/kg NaHCO 3 and a current efficiency of 83%. This proof-of-concept study provides a highly effective technological pathway for the conversion of notorious wastes into valuable resources, creating possibilities for concurrent carbon reduction and wasted salt utilization.
研究领域:
环境科学
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化学工程
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Bo Zhao,Qianqian Liu,Guijuan Wei,Jianghao Wang,Xin-Yao Yu,Xiang Li,Hao Bin Wu
CoSe 2 is a potential anode material for sodium-ion batteries in terms of their high sodium storage capacity and tunable properties. However, structural degradation and unstable interphase during the reversible sodiation and de-sodiation lead to fast capacity decay. In this work, we develop a nanocomposite architecture based on CoSe 2 nanoparticles embedded in N-doped carbon matrix with conformal TiO 2 coating (CoSe 2 @NC@TiO 2 ) by using a metal-organic framework-assisted strategy. The small CoSe 2 nanoparticles and N-doped carbon matrix facilitate charge transport and suppress the structural degradation, while the redox-active TiO 2 shell further strengthens the structural and interfacial stability without decreasing the capacity. The as-prepared CoSe 2 @NC@TiO 2 nanocomposite particles deliver a reversible sodium storage capacity of 520 mAh g −1 at 0.1 A g −1 with a capacity retention of 78% after 200 cycles, in contrast to the rapid capacity fading after 50 cycles of the pristine CoSe 2 @NC particles without TiO 2 shell.
研究领域:
材料科学
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电化学
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能源存储
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DOI
高影响因子
CELLULOSE
·
2024
·Vol. 31
·期 14
·8787-8803
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IF 4.9
Wang Siqi,Yang Yueqi,Wang Chang,Jiao Yunhong,Wang Chunzheng,Ma Haiyun
In modern society, with the rapid increase in energy consumption, there is a growing interest in the effective utilization of bio-resources. Biomass aerogels have considerable academic research value due to their eco-friendly attributes and renewable nature. In this work, sodium alginate (SA) and sodium lignosulfonate (SLS) are employed as the matrix, which are dually cross-linked with Ca 2+ and bis[tetrakis(hydroxymethyl)phosphonium] sulfate (THPS). Subsequently, a well-formed aerogel (CA-SP) is obtained through the lyophilization process. The formed dual crosslinking network and the “egg-box” structure endow the CA-SP aerogel with superior flame retardancy and thermal insulation properties, as evidenced by a limiting oxygen index value of 40.8%, achievement of the UL94 V-0 rating and low total heat release (1.35 MJ·m −2 ). Moreover, the THPS simultaneously endows the SA-SP aerogel with excellent flame retardancy and antimicrobial effect. The exceptional flame retardancy, smoke suppression capabilities, and antimicrobial effects of the CA-SP aerogel expand its prospects for application.
研究领域:
材料科学
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生物工程
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2024
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IF 9.4
Wei Song,Shan Yang,Jiaxiang An,Lixin Zhang,Ruina Shi,Niping Chen,Guisheng Qi,Luchao Yue
Iron sulfides (FeS 2 ) are promising anode materials for sodium ion batteries (SIBs); however, their inferior electronic conductivity, large volume swelling, and sluggish sodium ion diffusion kinetics lead to unsatisfactory rate performance and cycling durability. Heteroatom doping plays a crucial role in modifying the physicochemical properties of FeS 2 anodes to enhance its sodium storage. Herein, ultra-fine Ni-doped FeS 2 nanocrystals derived from a metal–organic framework (MOF) and in-situ anchored on a nitrogen doped carbon skeleton (Ni-FeS 2 @NC) are proposed to enhance both structural stability and reaction kinetics. Material characterization, electrochemical performance, and kinetics analysis demonstrate the critical role of Ni doping in sodium storage, particularly in accelerating Na + diffusion efficiency. The N-doped carbon derived from the MOF can buffer the volume expansion and enhance the structural stability of electrode materials during sodiation/desodiation processes. As expected, Ni-FeS 2 @NC exhibits a high reversible capacity of 656.6 ± 65.1 mAh g −1 at 1.0 A g −1 after 200 cycles, superior rate performance (308.8 ± 6.0 mAh g −1 at 10.0 A g −1 ), and long-term cycling durability over 2000 cycles at 1.0 A g −1 . Overall, this study presents an effective approach for enhancing the sodium storage performance and kinetics of anode materials for high efficiency SIBs.
研究领域:
材料科学
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电化学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Hainan Pei,Ru Wang,Ying Li,Yunfei Xue,Yaxin Chen,Jiangmin Jiang,Xiangkai Kong,Quanchao Zhuang,Zhicheng Ju
Designing the closed-pore structure of hard carbon to improve its low-voltage sodium storage capacity is both significant and challenging for the development of high-performance sodium-ion batteries. We utilized a briquetting process combined with a templating method to modulate the pore architecture. By adjusting the briquette pressure, we can regulate the degree of magnesium ion etching and the degree of cross-linking in the precursor, thereby augmenting the closed-pore content of hard carbon and boosting its sodium-storage performance at low potential. During the pre-carbonization stage, magnesium ions etched the surrounding carbon layers, generating large open pores. Experimental results demonstrated that at 3 MPa, the HC-3 anode exhibited a reversible capacity of 366 mA h g −1 at 20 mA g −1 , with a capacity of 224 mA h g −1 below 0.1 V. This study provides valuable insights into optimizing the pore structure of coal-based hard carbon anodes and enhancing low-potential sodium storage.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2024
·
IF 7.4
Qiuping Li,Shaopeng Gu,Liang Yu,Funian Han,Jingmeng Dong,Chunmei Li,Jiaqi Jia
An effective and environment-friendly method for preparing NaVO 2 , which can be used as an energy storage material, from Na 2 CO 3 roasted vanadium-chromium slag was proposed using water as the leaching medium. Vanadium-chromium slag with 30 % Na 2 CO 3 was heated in air and argon atmospheres from 30 °C to 1000 °C, respectively. The results show that vanadium compounds converted to NaVO 3 while chromium compounds to Na 2 CrO 4 under air. NaVO 3 and Na 2 CrO 4 were water-soluble making the separation of vanadium and chromium complicated. NaVO 3 and Na 2 CrO 4 were water-soluble making the separation of vanadium and chromium complicated. Heating vanadium-chromium slag in an argon atmosphere caused Fe 2 VO 4 to react with Na 2 CO 3 , forming NaVO 2 and NaFeO 2 below 1000 °C. However, chromium compounds unreacted in argon. NaFeO 2 was insoluble, while NaVO 2 was water-soluble with a leaching efficiency exceeding 70 %. Notably, the characteristic peak of V(III) in NaVO 2 was first found to be −532.00 ppm by the liquid 51 V NMR spectrum. This method represents a novel, green strategy for the resource utilization of vanadium-chromium slag, involving Na 2 CO 3 roasting in an argon atmosphere to produce NaVO 2 . It offers a promising approach to reduce the cost of NaVO 2 battery production and support its commercialization.
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
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