Three-dimensional Li3V2(PO4)3/C nanowire and nanofiber hybrid membrane as a self-standing, binder-free cathode for lithium ion batteries

Jing, Maoxiang; Pi, Zhi‐chao; Zhai, Hong-ai; Li, Jingquan; Chen, Lili; Shen, Xiangqian; Xi, Xiaoming; Xiao, Kesong

doi:10.1039/c6ra13686a

Cited by 11 publications

(5 citation statements)

References 39 publications

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“…In this work, the three-dimensional nano-TiO 2 fibre membrane was prepared by general electrospinning technique and followed by an improved hot-press sintering process as described in our previous work [19,20]. By means of the hot-press sintering step at 750°C for 1 h under N 2 atmosphere, the prepared fibre membrane presents a homogeneous surface and good flexibility as shown in figure 1a, which can be directly cut into self-standing electrodes without using binder and metal current.…”

Section: Resultsmentioning

confidence: 99%

Electrospinning preparation of oxygen-deficient nano TiO _2-x /carbon fibre membrane as a self-standing high performance anode for Li-ion batteries

Jing

Cui

et al. 2017

R. Soc. open sci.

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Improving the specific capacity and electronic conductivity of TiO2 can boost its practical application as a promising anode material for lithium ion batteries. In this work, a three-dimensional networking oxygen-deficient nano TiO2-x/carbon fibre membrane was achieved by combining the electrospinning process with a hot-press sintering method and directly used as a self-standing anode. With the synergistic effects of three-dimensional conductive networks, surface oxygen deficiency, high specific surface area and high porosity, binder-free and self-standing structure, etc., the nano TiO2-x/carbon fibre membrane electrode displays a high electrochemical reaction kinetics and a high specific capacity. The reversible capacity could be jointly generated from porous carbon, full-lithiation of TiO2 and interfacial lithium storage. At a current density of 100 mA g−1, the reversible discharge capacity can reach 464 mA h g−1. Even at 500 mA g−1, the discharge capacity still remains at 312 mA h g−1. Compared with pure carbon fibre and TiO2 powder, the TiO2-x/C fibre membrane electrode also exhibits an excellent cycle performance with a discharge capacity of 209 mA h g−1 after 700 cycles at the current density of 300 mA g−1, and the coulombic efficiency always remains at approximately 100%.

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Section: Resultsmentioning

confidence: 99%

Electrospinning preparation of oxygen-deficient nano TiO _2-x /carbon fibre membrane as a self-standing high performance anode for Li-ion batteries

Jing

Cui

et al. 2017

R. Soc. open sci.

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“…The two semi-circles indicate the presence of two interfacial reactions in the cell. 41 The small semi-circle on the left (R ct1 ) corresponds to ion transport resistance caused by the ion exchange membrane when ions in the influent move to the flowelectrode. The other semi-circle (R ct2 ) is caused by the flow-electrode medium when ions move to the AC surface.…”

Section: Desalting Behaviors and Eis Analysis Of The Conductive Addit...mentioning

confidence: 99%

Plate-Shaped Graphite for Improved Performance of Flow-Electrode Capacitive Deionization

Yang

Park

Yoo

et al. 2017

J. Electrochem. Soc.

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Capacitive deionization (CDI) using a flow-electrode primarily composed of porous materials and an aqueous electrolyte, exhibits continuous deionization and a high desalting efficiency. The development of flow-electrodes with high capacitance and low resistance is essential for achieving an efficient flow-electrode capacitive deionization (FCDI) system with low energy consumption. For this purpose, studies on conductive additives (CAs) that do not clog the flow-channel must be conducted. Here, we evaluated the desalting performance of flow-electrodes with spherical and plate-type conductive additives having sizes between 1 and 10 μm and possessing powder conductivities similar to or higher than nano-sized carbon black, which is often used as the CA in solid fixed electrodes in conventional CDI systems. We confirmed that plate-shaped CAs reduced resistance near the pores and enhanced the desalting performance of the flow-electrodes in FCDI systems. The positive effect of such plate-shaped CAs appears to originate from efficient charge percolation between the ACs via the electrical conductive direction of the graphite and the alignment of the exposed graphite edges to the pumping direction of the flow-electrode. Finally, we verified that the flow-electrode with the newly discovered micro-sized CA could be operated without clogging the flow-channel in FCDI and showed an improved desalting performance of around 1.5 times compared the flow-electrode without the micro-sized CA for extended periods of time.

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“…A 3D mace-like Li 3 V 2 (PO 4 ) 3 /C nanowire and nanofiber membrane was prepared by using nanoparticles as a catalyst [47]. The fabrication process combines a modified electrospinning method with a hot-press treatment.…”

Section: Methods For Making 3d Porous Li-ion Battery Cathodesmentioning

confidence: 99%

Three-Dimensionally Porous Li-Ion and Li-S Battery Cathodes: A Mini Review for Preparation Methods and Energy-Storage Performance

Liu

Long

et al. 2019

Nanomaterials

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Among many types of batteries, Li-ion and Li-S batteries have been of great interest because of their high energy density, low self-discharge, and non-memory effect, among other aspects. Emerging applications require batteries with higher performance factors, such as capacity and cycling life, which have motivated many research efforts on constructing high-performance anode and cathode materials. Herein, recent research about cathode materials are particularly focused on. Low electron and ion conductivities and poor electrode stability remain great challenges. Three-dimensional (3D) porous nanostructures commonly exhibit unique properties, such as good Li+ ion diffusion, short electron transfer pathway, robust mechanical strength, and sufficient space for volume change accommodation during charge/discharge, which make them promising for high-performance cathodes in batteries. A comprehensive summary about some cutting-edge investigations of Li-ion and Li-S battery cathodes is presented. As demonstrative examples, LiCoO2, LiMn2O4, LiFePO4, V2O5, and LiNi1−x−yCoxMnyO2 in pristine and modified forms with a 3D porous structure for Li-ion batteries are introduced, with a particular focus on their preparation methods. Additionally, S loaded on 3D scaffolds for Li-S batteries is discussed. In addition, the main challenges and potential directions for next generation cathodes have been indicated, which would be beneficial to researchers and engineers developing high-performance electrodes for advanced secondary batteries.

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Three-dimensional Li₃V₂(PO₄)₃/C nanowire and nanofiber hybrid membrane as a self-standing, binder-free cathode for lithium ion batteries

Abstract: A three-dimensional (3D) mace-like Li3V2(PO4)3/C nanowire and nanofiber hybrid membrane was prepared for self-standing, bind-free electrodes.

Cited by 11 publications

References 39 publications

Electrospinning preparation of oxygen-deficient nano TiO _2-x /carbon fibre membrane as a self-standing high performance anode for Li-ion batteries

Electrospinning preparation of oxygen-deficient nano TiO _2-x /carbon fibre membrane as a self-standing high performance anode for Li-ion batteries

Plate-Shaped Graphite for Improved Performance of Flow-Electrode Capacitive Deionization

Three-Dimensionally Porous Li-Ion and Li-S Battery Cathodes: A Mini Review for Preparation Methods and Energy-Storage Performance

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Three-dimensional Li3V2(PO4)3/C nanowire and nanofiber hybrid membrane as a self-standing, binder-free cathode for lithium ion batteries

Abstract: A three-dimensional (3D) mace-like Li3V2(PO4)3/C nanowire and nanofiber hybrid membrane was prepared for self-standing, bind-free electrodes.

Cited by 11 publications

References 39 publications

Electrospinning preparation of oxygen-deficient nano TiO 2-x /carbon fibre membrane as a self-standing high performance anode for Li-ion batteries

Electrospinning preparation of oxygen-deficient nano TiO 2-x /carbon fibre membrane as a self-standing high performance anode for Li-ion batteries

Plate-Shaped Graphite for Improved Performance of Flow-Electrode Capacitive Deionization

Three-Dimensionally Porous Li-Ion and Li-S Battery Cathodes: A Mini Review for Preparation Methods and Energy-Storage Performance

Contact Info

Product

Resources

About

Three-dimensional Li₃V₂(PO₄)₃/C nanowire and nanofiber hybrid membrane as a self-standing, binder-free cathode for lithium ion batteries

Electrospinning preparation of oxygen-deficient nano TiO _2-x /carbon fibre membrane as a self-standing high performance anode for Li-ion batteries

Electrospinning preparation of oxygen-deficient nano TiO _2-x /carbon fibre membrane as a self-standing high performance anode for Li-ion batteries