One-Pot Synthesized Bicontinuous Hierarchical Li3V2(PO4)3/C Mesoporous Nanowires for High-Rate and Ultralong-Life Lithium-ion Batteries

Wei, Qiulong; An, Qinyou; Chen, Dandan; Mai, Liqiang; Chen, Shiyu; Zhao, Yunlong; Hercule, Kalele Mulonda; Xu, Lin; Minhas-Khan, Aamir; Zhang, Qingjie

doi:10.1021/nl404709b

Cited by 231 publications

(197 citation statements)

References 55 publications

(86 reference statements)

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“…The disordered carbon on the surface of LVP and LTP may help to bind the active materials to the conductive agent of carbon black in the electrode and thus improve the bonding of electrode layers and substrates, whereas the graphitic structured carbon is necessary for the improvement of electronic conductivity of active materials. 19,[26][27][28][29][35][36][37][38] In combination with the information obtained from HR-TEM and TGA, it can be concluded that both of the specimens contain a layer of conductive carbon. The coated carbon on phosphate materials can influence on the electrochemical performance by means of improvement of electronic conductivity as well as the formation of SEI layer.…”

Section: Resultsmentioning

confidence: 70%

“…As a result, the rate capability of LVP cathodes is much higher than that of many of the other cathode candidates due to its multi-lithium-ions diffusion pathways. 21 Although many studies have investigated LVP cathodes in halfcells, [22][23][24][25][26][27] few have also taken its full cell performance into account. Especially, its potential high rate capability has hardly been reached in full cells due to few equally well performing anode materials.…”

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confidence: 99%

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An Advanced All Phosphate Lithium-Ion Battery Providing High Electrochemical Stability, High Rate Capability and Long-Term Cycling Performance

Yu¹,

Kungl²,

Eichel³

et al. 2017

J. Electrochem. Soc.

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High rate capability and long-term cycling spindle-like LiTi 2 (PO 4 ) 3 /C anode and needle-like Li 3 V 2 (PO 4 ) 3 cathode have been evaluated in half-cell, and combined to fabricate an advanced fast cyclable all phosphate lithium-ion battery. The electrode materials with well-defined morphology were prepared by a solvothermal reaction followed by annealing, delivering capacities of 115.0 and 118.1 mAh · g −1 at 25 • C over 200 cycles at 0.5 C, respectively. For the full cell assembly, no prelithiation process is needed for the selected electrode pair due to their mutually matched capacity and stoichiometric amount of lithium-ions. The fabricated full cell, with an output voltage of more than 1.5 V, inherits a superior rate capability and cycling performance of its electrodes. A discharge capacity of 36 mAh · g −1 at 30 C (about 30% of the initial discharge capacity at 0.1 C) and a capacity retention of ∼35% at 5 C over 1000 cycles has been achieved. Furthermore, one of the most important reasons for the capacity fading in the full cell during long-term cycling is found to be a decomposition and structural degradation of Lithium-ion batteries are widely used in portable electronics and are a promising energy storage system for electric vehicles because of their high energy density and long cycle life.1,2 However, current lithium-ion battery technologies are still far from satisfaction to meet the increasingly diverse range of applications. For instance, the use of lithium-ion cells in large scale applications, such as electric vehicles, demands high charge/discharge cycling performance and an inherent high thermal stability.3,4 Micro-lithium-ion batteries which can be applied to human body require in first instance the considerations of safety issue and cycling performance. 5,6 For the development of a novel type of lithium-ion battery like all-solid-state lithium-ion battery, one of the urgent needs to be addressed is to improve the ionic and electronic conductivity among the whole battery system. 7,8 Additionally, high rate performance and long cycle life are required for lithium-ion battery as stationary application for power management. To advance the battery technologies according the desired applications, it is important to explore the cathode and anode materials, and match them reasonably and to investigate their electrochemical performances. [10][11][12] have attracted much attention because more than two formula units of Li-ions can possibly intercalate/deintercalate into/from their host crystal structure during discharge/charge at a moderate working potential. On the basis of the crystal structure in these cathode materials, the use of phosphate polyanions (PO 4 ) 3− is considered as a potential alternative to oxide-based cathodes. The strong P−O bonds and the framework of (PO 4 ) 3− anions can guarantee both the dynamic and thermal stabilities required to fulfill the safety requisites in high-power applications.18 More than that, phosphate materials are also believed to be superior candidates of an...

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Section: Resultsmentioning

confidence: 70%

mentioning

confidence: 99%

An Advanced All Phosphate Lithium-Ion Battery Providing High Electrochemical Stability, High Rate Capability and Long-Term Cycling Performance

Yu¹,

Kungl²,

Eichel³

et al. 2017

J. Electrochem. Soc.

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“…[53] To further investigate the structure of NVP@rGO, the NVP@rGO composites are dipped in hydrofluoric acid to remove the NVP crystals. [36,37] The rGO nanosheets with stack-layered morphology is largely retained ( Figure S7, Supporting Information). In order to investigate the effect of freeze-drying process, the morphologies of the NVP@rGO material prepared without freeze-drying treatment (named unlayered-NVP@rGO) are shown in Figure S8 of the Supporting Information.…”

Section: Resultsmentioning

confidence: 99%

Layer‐by‐Layer Na₃V₂(PO₄)₃ Embedded in Reduced Graphene Oxide as Superior Rate and Ultralong‐Life Sodium‐Ion Battery Cathode

Wei

et al. 2016

Advanced Energy Materials

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290

160

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However, the limited lithium resource in earth is detrimental to the further application due to the possible increasing cost and unstable energy supply. [12][13][14][15] Therefore, there is an urgent demand for developing alternative energy storage devices with low cost while maintaining a comparable performance to LIBs. Among them, sodium-ion batteries (SIBs) have become the worldwide focus owing to abundant resources and low cost. [16][17][18][19] To develop high-performance SIBs, it remains challenging to discover/develop suitable electrode materials (especially cathode) to satisfy the requirement of long-term cycling stability and rate-capability.Owing to larger radius of Na + than that of Li + (0.98 vs 0.69 Å), various cathode materials with large open frameworks, including layered transitionmetal oxides [19][20][21][22][23][24][25] and polyanionic compounds, [2,13,18,[26][27][28][29][30][31][32][33] have been developed for (1) the improved sodium storage capacity, (2) the facilitated Na + diffusion in the lattice, and (3) the restricted structure degradation caused by Na + insertion/extraction. The NASICON (sodium (Na) super ion conductor) Na x M 2 (NO 4 ) 3 (M = transition metal, N = P 5+ , Si 4+ , S 6+ , and Mo 6+ ) structure with 3D large open framework allows for rapid and reversible ion diffusion in the lattice, which is now developed as electrode with promising electrochemical performance. [34] Among these, the Na 3 V 2 (PO 4 ) 3 (NVP) becomes a "shining star" with high sodium diffusion ability and remarkable high energy density (i.e., 400 Wh kg −1 ). [18] However, the high ionic diffusion ability of NVP is accompanied with poor electronic conductivity, [35] which results in the low utilization of active materials even at low rates. In order to obtain remarkable performance of NVP, the hurdles of poor rate capability and cycling stability need to be further addressed. Recently, carbon-coated active nanocrystals embedded in a porous carbon matrix, which demonstrated excellent rate performance and cycling stability for Li 3 V 2 (PO 4 ) 3 cathodes, [36,37] as well as for NVP cathodes. [38][39][40] In general, the porous carbon content is usually high, which may lead to the decrease of tap density and entire cell volumetric energy density. [41,42] Li and co-workers reported adaptive graphene gel films as a highly compact electrode with Na 3 V 2 (PO 4 ) 3 (NVP) is regarded as a promising cathode for advanced sodiumion batteries (SIBs) due to its high theoretical capacity and stable sodium (Na) super ion conductor (NASICON) structure. However, strongly impeded by its low electronic conductivity, the general NVP delivers undesirable rate capacity and fails to meet the demands for quick charge. Herein, a novel and facile synthesis of layer-by-layer NVP@reduced graphene oxide (rGO) nanocomposite is presented through modifying the surface charge of NVP gel precursor. The well-designed layered NVP@rGO with confined NVP nanocrystal in between rGO layers offers high electronic and ionic conductivity as well as sta...

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“…On the other hand, Na 3 V 2 (PO 4 ) 3 is an electronic insulator as NASICON is, indeed, a solid-state electrolyte similar with its lithium counterpart. [ 27 ] In addressing this issue, we increase the electronic conductivity by generating Na 3 V 2 (PO 4 ) 3 nanoparticles inside a nanoporous carbon framework that serves as an electronic conduit. Furthermore, the nanoporosity inside the carbon/Na 3 V 2 (PO 4 ) 3 nanocomposite provides extensive contact sites between Na 3 V 2 (PO 4 ) 3 and imbibed liquid electrolyte.…”

Section: Resultsmentioning

confidence: 99%

A High‐Power Symmetric Na‐Ion Pseudocapacitor

Jian

Raju

et al. 2015

Adv Funct Materials

105

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Batteries and supercapacitors are critical devices for electrical energy storage with wide applications from portable electronics to transportation and grid. However, rechargeable batteries are typically limited in power density, while supercapacitors suffer low energy density. Here, a novel symmetric Na‐ion pseudocapacitor with a power density exceeding 5.4 kW kg−1 at 11.7 A g−1, a cycling life retention of 64.5% after 10 000 cycles at 1.17 A g−1, and an energy density of 26 Wh kg−1 at 0.585 A g−1 is reported. Such a device operates on redox reactions occurring on both electrodes with an identical active material, viz., Na3V2(PO4)3 encapsulated inside nanoporous carbon. This device, in a full‐cell scale utilizing highly reversible and high‐rate Na‐ion intercalational pseudocapacitance, can bridge the performance gap between batteries and supercapacitors. The characteristics of the device and the potentially low‐cost production make it attractive for hybrid electric vehicles and low‐maintenance energy storage systems.

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One-Pot Synthesized Bicontinuous Hierarchical Li₃V₂(PO₄)₃/C Mesoporous Nanowires for High-Rate and Ultralong-Life Lithium-ion Batteries

Cited by 231 publications

References 55 publications

An Advanced All Phosphate Lithium-Ion Battery Providing High Electrochemical Stability, High Rate Capability and Long-Term Cycling Performance

An Advanced All Phosphate Lithium-Ion Battery Providing High Electrochemical Stability, High Rate Capability and Long-Term Cycling Performance

Layer‐by‐Layer Na₃V₂(PO₄)₃ Embedded in Reduced Graphene Oxide as Superior Rate and Ultralong‐Life Sodium‐Ion Battery Cathode

A High‐Power Symmetric Na‐Ion Pseudocapacitor

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One-Pot Synthesized Bicontinuous Hierarchical Li3V2(PO4)3/C Mesoporous Nanowires for High-Rate and Ultralong-Life Lithium-ion Batteries

Cited by 231 publications

References 55 publications

An Advanced All Phosphate Lithium-Ion Battery Providing High Electrochemical Stability, High Rate Capability and Long-Term Cycling Performance

An Advanced All Phosphate Lithium-Ion Battery Providing High Electrochemical Stability, High Rate Capability and Long-Term Cycling Performance

Layer‐by‐Layer Na3V2(PO4)3 Embedded in Reduced Graphene Oxide as Superior Rate and Ultralong‐Life Sodium‐Ion Battery Cathode

A High‐Power Symmetric Na‐Ion Pseudocapacitor

Contact Info

Product

Resources

About

One-Pot Synthesized Bicontinuous Hierarchical Li₃V₂(PO₄)₃/C Mesoporous Nanowires for High-Rate and Ultralong-Life Lithium-ion Batteries

Layer‐by‐Layer Na₃V₂(PO₄)₃ Embedded in Reduced Graphene Oxide as Superior Rate and Ultralong‐Life Sodium‐Ion Battery Cathode