COLLOID AND POLYMER SCIENCE
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2025
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IF 2.3
Chang Guanglei,Yang Miaomiao,Xu Zhaobin,Wang Xinling,Li Wenyao,He Meixia,Zhang Jintao,Xu Yuanzhi,Wang Lulu,Zhang Liguo
The performance of chromatographic media affects the efficiency of purification. In this study, based on a T-type microfluidic droplet generation system, agarose microspheres with large pore size and high load were prepared by adjusting the viscosity of a 4% agarose solution to 70 mPa·s at high temperature. Optical microscopy revealed that the self-made agarose microspheres had a good spherical structure with an average particle size of 82.81 μm and a CV value of 0.0576. Subsequently, the stability and mechanical strength of the self-made agarose microspheres were improved by cross-linking and activation with epichlorohydrin. After the cross-linking and activation, the agarose microspheres were grafted with Protein A to make it have specific adsorption capacity for IgG. The adsorption capacity of the self-made agarose microspheres grafted with Protein A for IgG was 87 mg/g. In the complex serum environment, the agarose microspheres grafted with Protein A still maintained good IgG adsorption capacity and selectivity, demonstrating their potential in practical applications. This study demonstrates the great potential of microfluidic technology in the design and preparation of bio-separation media. By precisely controlling the particle size and pore size of the microspheres, the purification efficiency and selectivity can be significantly improved, providing a new solution for the efficient purification of bio-products. Graphical abstract
研究领域:
生物分离
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生物技术
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化学工程
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DOI
高影响因子
JOURNAL OF POWER SOURCES
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2020
·
IF 8.247
Donghao Wang,Yuqi Wu,Xuefan Zheng,Shijun Tang,Zhengliang Gong,Yong Yang
All-solid-state Li–S batteries (ASSLSBs) offer an opportunity to realize both high energy density , safety and reliability, via eliminating the polysulfides shuttle effect and flammable liquid electrolyte. However, the sluggish kinetics of S and Li 2 S solid conversion results in low discharge capacity at high active material loading, which is critical for ASSLSBs to implement the high energy density potential. Herein, nitrogen doped-carbon (NC) coated Li 2 S (Li 2 S@NC composite) is developed for ASSLSBs that highly improves electrochemical performance. A thin and uniform nitrogen doped-carbon layer is coated on Li 2 S via pyrolysis deposition approach to prepare Li 2 S@NC. The as obtained Li 2 S@NC composite exhibits greatly enhanced electrochemical performance with high reversible capacity, high coulombic efficiency of ~100%, good rate capability and cycling stability. Particularly, outstanding electrochemical performance with high capacity of 931 mAh g −1 can also be obtained at both high Li 2 S content (43%) and high areal Li 2 S loading (10.4 mg cm −2 ).
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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固态电池
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纳米材料
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DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2025
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IF 9.7
Xiaojing Wu,Xiangyu Liu,Jingxin Hou,Jinhu Liu,Zheng Lian,Xueqin Sun,Lingyu Du,Litao Kang
Increasing the active material loading on electrodes provides an effective approach for improving the energy density of batteries. However, this approach is always hindered by intractable challenges such as poor structural stability, slow reaction kinetics, and low active material utilization. In this paper, a high-performance double-fiber interlocking binder system is developed to construct high-performance iodine cathodes, by leveraging a polyquaternium-10 (P10, a cationic cellulose) waterborne binder and a bacterial cellulose (BC) reinforcing fiber. The synergistic effect of mechanical interlocking and hydrogen bonding between BC and P10 forms a robust 3D network, enabling the construction of high-mass-loading freestanding I 2 @AC cathodes. Furthermore, the highly hydrophilic BC-P10 network ensures rapid and uniform electrolyte infiltration, facilitating fast ion transport and full material utilization. At the same time, the network can firmly anchor the I 2 @AC active material and the polyiodide intermediates, suppress the detrimental polyiodide shuttling and self-discharge, while retaining the mechanical strength and structural integrity. At routine iodine loading mass (2–3 mg cm −2 ), the BC-P10-bonded cathode delivers much higher capacity (182.6 vs.150.6 mA h g −1 , 0.2 A g −1 ), better rate capability (137.6 vs.75.4 mA h g −1 , 5.0 A g −1 ) and higher anti-self-discharge performance (capacity retention after 200 h: 76.0 vs. 68.4 %), compared with the conventional PVDF-bonded cathode. At an ultrahigh iodine loading mass of 32 mg cm −2 , the BC-P10-bonded cathode delivers still an exceptional capacity of 150.3 mA h g −1 at 0.2 A g −1 (corresponding to an areal capacity of 4.8 mAh cm −2 ). The application viability of this binder system has also been demonstrated by constructing high-mass-loading rollable pouch batteries. This work opens a promising avenue for the development of high-performance iodine cathodes.
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PubMed
高影响因子
ACS Nano
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2017
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IF 13.942
Wuxing Hua,Zhi Yang,Huagui Nie,Zhongyu Li,Jizhang Yang,Zeqing Guo,Chunping Ruan,Xi’an Chen,Shaoming Huang
Lithium–sulfur batteries have become an appealing candidate for next-generation energy-storage technologies because of their low cost and high energy density. However, one of their major practical problems is the high solubility of long-chain lithium polysulfides and their infamous shuttle effect, which causes low Coulombic efficiency and sulfur loss. Here, we introduced a concept involving the dithiothreitol (DTT) assisted scission of polysulfides into lithium–sulfur system. Our designed porous carbon nanotube/S cathode coupling with a lightweight graphene/DTT interlayer (PCNTs-S@Gra/DTT) exhibited ultrahigh cycle-ability even at 5 C over 1100 cycles, with a capacity degradation rate of 0.036% per cycle. Additionally, the PCNTs-S@Gra/DTT electrode with a 3.51 mg cm–2 sulfur mass loading delivered a high initial areal capacity of 5.29 mAh cm–2 (1509 mAh g–1) at current density of 0.58 mA cm–2, and the reversible areal capacity of the cell was maintained at 3.45 mAh cm–2 (984 mAh g–1) over 200 cycles at a higher current density of 1.17 mA cm–2. Employing this molecule scission principle offers a promising avenue to achieve high-performance lithium–sulfur batteries.
研究领域:
电化学储能
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材料科学
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能源化学
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纳米材料
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电池技术
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DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
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2025
·Vol. 27
·期 25
·13315-13325
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IF 2.9
Kai Yang,Jiuzhou Yu,Xu Zhang,Shaoting Wang,Qiang Wang,Ci Gao,Yiyao Song,Xingxing Guo
High-performance aqueous zinc-ion batteries as one of the most promising battery systems have attracted much attention in the development of next-generation advanced energy storage systems. However, the development of AZIBs has been plagued by inherent issues, such as growth of zinc dendrites, irreversible dissolution of manganese-based cathode materials, hydrogen precipitation reaction, and other side reactions. In this work, we developed a facile and eco-efficient strategy that adopted an optimized electrolyte additive of Al2(SO4)3 in the ZnSO4-based electrolytes for AZIBs. The electrochemical, spectroscopic, and microscopic characterization results demonstrated that the optimized aluminum sulfate additives can inhibit the Zn dendrite formation, reduce the generation of dead manganese and stabilize the crystalline structure of the manganese-based cathode. The Zn||MnO2 full cell exhibits a high discharge plateau of ∼1.65 V and excellent cycling stability with a high-capacity retention of 78% even after 1200 cycles at 1C with a high active material loading (∼8.0 mg cm−2). This facile and eco-efficient strategy provides a promising and high-efficient strategy to design high-performance AZIBs for energy storage systems.
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高影响因子
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
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2020
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IF 3.209
Chen Zhang,Wen-Juan Liu,Tian-Yu Wang,Ting-Ting Qian,Noor Ul Ain,Lu-Qian Wu,Xiao-Ning Wu,Xue-Ping Cai,Qi Zeng,Hong-Ping Xie
Gene transfection vector polyethyleneimine (PEI) was used as a cross-linking agent to crosslink the surface epoxidized magnetic nanoparticles and aggregate them to form a small magnetic bead (MB) with multiple nanoscale bumps on its surface (i.e. the multi-bumpy small magnetic bead, mbsMB). As there is a very low content of non-magnetic components (the cross-linking agent) in the magnetic bead, the mbsMB has an ultrahigh magnetic content of 81.95 % and a smaller particle size of 1.4 μm when compared with the usual medical MB. Such a small MB also has a strong magnetic force allowing it to reach the rapid separating ability of the commonly used larger medical MB which has 8 times its volume. The mbsMB has an obvious pH sensitivity of positive and negative surface charges and the salt-free isolation of DNA has been achieved based on the electrostatic interactions between mbsMB and DNA. This avoids the desalting of the isolated DNA as well as the effects of high salt concentration on its long chain helix structure. Whether in an acidic absorbing medium, an alkalinous desorbing one or a near neutral particle-storing one, the mbsMB will have obvious surface electrostatic charges. There is also its good suspension stability in an aqueous medium which provides a good condition for isolating of DNA suitable for efficiently adsorbing and desorbing. The as-prepared MB has a unique surface structure and some excellent properties, all suitable for adsorbing DNA. In addition, a large amount of commonly used gene transfection vector PEI can be cross-linked and bonded on the surface of mbsMB, whilst still having an excellent DNA-loading ability. In summary, the mbsMB has an ultrahigh capacity of 629.49 mg/g for DNA load.
研究领域:
材料科学
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生物技术
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纳米技术
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分子生物学
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PubMed
高影响因子
Advanced Energy Materials
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2025
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IF 26
Jianren Wang,Tianshuo Yang,Adekunle Adedapo Obisanya,Yan Ma,Zhibin Ren,Xinyi Tan,Wenwei Lei,Ailing Song,Faming Gao
Achieving high areal energy density requires the development of advanced electrodes capable of maintaining excellent performance under high mass-loading conditions. Herein, a novel force-field regulation strategy has been proposed to fabricate graphene oxide/exfoliated graphene heterogeneous micro-aerogels (GM) electrodes with precisely engineered channel structures and interconnected conductive frameworks. This innovative design effectively mitigates the limitations of conventional graphene aerogels (GA) and graphene films (EGF), such as prolonged ion transport paths and severe internal potential gradients, particularly under high mass-loading. As a result, GM electrode, with a high mass loading of 20 mg cm −2 , demonstrates an outstanding capacitance of 2.53 F cm −2 at an operational time of 200 s, and maintains a superior 58.7% capacitance retention at a shorter time of 5 s, significantly outperforming its GA and EGF counterparts. Moreover, GM architecture can serve as a universal platform to host redox-active faradic materials (e.g., PANI, MnO 2 , and Co(OH) 2 ), achieving exceptional areal capacitances up to 16.9 F cm −2 , demonstrating its versatility and scalability for energy storage applications. The underlying mechanisms driving the superior performance of GM electrodes are comprehensively elucidated through multiscale characterizations, electrochemical analyses, and finite element simulations, offering a robust framework for the design of next-generation high-mass-loading energy storage systems.
研究领域:
材料科学
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纳米技术
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储能技术
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电化学
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先进制造
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DOI
高影响因子
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