Aqueous Lithium‐ion Battery LiTi2(PO4)3/LiMn2O4 with High Power and Energy Densities as well as Superior Cycling Stability**

Luo, Jiayan; Xia, Yongyao

doi:10.1002/adfm.200700638

Cited by 380 publications

(298 citation statements)

References 27 publications

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“…3A. In contrast, although many nanostructured materials have been developed to show high-rate performance (4,5,(22)(23)(24), most of them exhibit a nonflat plateau with a capacitor-like charge-discharge curve at high rates. The profile change of voltage curves from flat to slope at high rates may be attributed to polarization related to the poor electrical conductivity of electrode materials, or may occur because electrode materials obey a pseudocapacitive (interfacial) storage mechanism instead of a bulk intercalation storage mechanism (25).…”

Section: Resultsmentioning

confidence: 99%

Flexible graphene-based lithium ion batteries with ultrafast charge and discharge rates

Chen

Ren

et al. 2012

Proc. Natl. Acad. Sci. U.S.A.

733

494

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There is growing interest in thin, lightweight, and flexible energy storage devices to meet the special needs for next-generation, high-performance, flexible electronics. Here we report a thin, lightweight, and flexible lithium ion battery made from graphene foam, a three-dimensional, flexible, and conductive interconnected network, as a current collector, loaded with Li 4 Ti 5 O 12 and LiFePO 4 , for use as anode and cathode, respectively. No metal current collectors, conducting additives, or binders are used. The excellent electrical conductivity and pore structure of the hybrid electrodes enable rapid electron and ion transport. For example, the Li 4 Ti 5 O 12 / graphene foam electrode shows a high rate up to 200 C, equivalent to a full discharge in 18 s. Using them, we demonstrate a thin, lightweight, and flexible full lithium ion battery with a high-rate performance and energy density that can be repeatedly bent to a radius of 5 mm without structural failure and performance loss.flexible device | full battery T he development of next-generation flexible electronics (1), such as soft, portable electronic products, roll-up displays, wearable devices, implantable biomedical devices, and conformable health-monitoring electronic skin, requires power sources that are flexible (2, 3). Similar to conventional energy storage devices, flexible power sources with high capacity and rate performance that enable electronic devices to be continuously used for a long time and fully charged in a very short time are very important for applications of high-performance flexible electronics (4-7). Lithium ion batteries (LIBs) have a high capacity but usually suffer from a low charge/discharge rate compared with another important electrochemical storage device, supercapacitors. Therefore, it is highly desired to fabricate a flexible electrochemical energy storage system with a supercapacitor-like fast charge/discharge rate and battery-like high capacity. However, the fabrication of such an energy storage device remains a great challenge owing to the lack of reliable materials that combine superior electron and ion conductivity, robust mechanical flexibility, and excellent corrosion resistance in electrochemical environments.Using nano-sized materials to prepare electrodes is one of the most promising routes toward flexible batteries. Metal oxide nanowires (8, 9) and carbon nanomaterials such as carbon nanotubes (6, 10-12) and graphene paper (13) have been recently demonstrated for use in flexible LIBs. However, electron transport in these electrodes is slow because of the relatively low quality of nanomaterials (such as chemically derived graphene) and/or high junction contact resistance between them. As a consequence, only a moderate charge/discharge rate has been obtained in these flexible batteries. It is generally believed that the charge/discharge rate of a LIB depends critically on the migration rate of lithium ions and electrons through the electrolyte and bulk electrodes into active electrode materials. Strategies to inc...

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Section: Resultsmentioning

confidence: 99%

Flexible graphene-based lithium ion batteries with ultrafast charge and discharge rates

Chen

Ren

et al. 2012

Proc. Natl. Acad. Sci. U.S.A.

733

494

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“…Some, such as VO 2 and LiV 3 O 8 , are partially soluble 33 . If the anode potential is slightly too low, as in the case of the NASICON A 1 þ x Ti 2 (PO 4 ) 3 (A ¼ Li, Na), then the low coulombic efficiency of the anode will result in overcharge of the cathode, unless the cathode potential is tuned to result in commensurate O 2 evolution 34 . Other intercalation electrodes such as transition metal sulphides are potentially subject to irreversible hydrolysis.…”

Section: Resultsmentioning

confidence: 99%

Full open-framework batteries for stationary energy storage

et al. 2014

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New types of energy storage are needed in conjunction with the deployment of renewable energy sources and their integration with the electrical grid. We have recently introduced a family of cathodes involving the reversible insertion of cations into materials with the Prussian Blue open-framework crystal structure. Here we report a newly developed manganese hexacyanomanganate open-framework anode that has the same crystal structure. By combining it with the previously reported copper hexacyanoferrate cathode we demonstrate a safe, fast, inexpensive, long-cycle life aqueous electrolyte battery, which involves the insertion of sodium ions. This high rate, high efficiency cell shows a 96.7% round trip energy efficiency when cycled at a 5C rate and an 84.2% energy efficiency at a 50C rate. There is no measurable capacity loss after 1,000 deep-discharge cycles. Bulk quantities of the electrode materials can be produced by a room temperature chemical synthesis from earth-abundant precursors.

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“…[15] As an alternative, low-cost aqueous batteries with earth abundant elements as the charge carriers, including Na + and Zn 2+ , are more promising. [16][17][18][19][20][21] www.advmat.de www.advancedsciencenews.com scanning calorimetric-mass spectrometric (TG/DSC-MS) tests, solid-state nuclear magnetic resonance (NMR) spectroscopy, and X-ray diffraction (XRD) analyses, we provide direct evidence on how H 2 O participates in the zinc-ion (de)intercalation processes in each step. These water molecules effectively function like a "lubricant" to facilitate fast zinc-ion transport and improve electrochemical performance.…”

Section: Batteriesmentioning

confidence: 97%

“…[15] As an alternative, low-cost aqueous batteries with earth abundant elements as the charge carriers, including Na + and Zn 2+ , are more promising. [16][17][18][19][20][21] Adv. Mater.…”

Section: Batteriesmentioning

confidence: 99%

Water‐Lubricated Intercalation in V₂O₅·nH₂O for High‐Capacity and High‐Rate Aqueous Rechargeable Zinc Batteries

et al. 2017

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Among the aqueous rechargeable batteries, Zn 2+ -based batteries exhibit a series of unique attributes for large-scale energy storage: (i) feasibility of using low-cost Zn metal anode with a high theoretical specific capacity of 819 mA h g −1 ; (ii) replacement of the traditional alkaline electrolytes by mild neutral electrolytes, mitigating the environmental disruption and recycling costs; and (iii) low redox potential of Zn/Zn 2+ (−0.76 V vs standard hydrogen electrode) and two-electron transfer mechanism during cycling responsible for the high energy density. [6,22,23] However, the zinc system also has long-standing challenges, such as the unstable cathode and anode structures in the aqueous environment. On the cathode side, the cycling stability is related to how zinc ions and the electrolyte react with the cathode materials, which is much more complex as compared to the lithium-ion systems. An initial attempt on the hexacyanoferrate system delivered a limited capacity (≈60 mA h g −1 ), although a high operation voltage of ≈1.7 V was achieved. [23][24][25][26][27][28] Recently, Pan et al. demonstrated that the manganese oxide cathode goes through a chemical conversion reaction with the zinc species and H 2 O rather than the simple intercalation process, delivering a high capacity of ≈285 mA h g −1 and an operating voltage of ≈1.44 V. [29] Nazar's group developed a Zn 0.25 V 2 O 5 ·nH 2 O cathode material, which displayed a specific energy of ≈250 Wh kg −1 (based on cathode) and a high capacity of 220 mA h g −1 at 15 C (1 C = 300 mA g −1 ). [30] During cycling, the structural water in Zn 0.25 V 2 O 5 ·nH 2 O was revealed to exchange with Zn 2+ reversibly, thus resulting in good kinetics and rate performance. Furthermore, some other studies have also suggested the importance of H 2 O in metal ion intercalation. [23,31] During cycling, the solvating H 2 O works as a charge shield for the metal ions (Al 3+ , Mg 2+ , Li + , etc.), reducing their effective charges and hence their interactions with the host frameworks. [32,33] This strategy has been investigated to enhance the capacity and rate capability of Li + , Na + , and Mg 2+ batteries. [34][35][36][37][38][39] In this paper, we present a systematic and detailed study of the role of H 2 O in bilayer V 2 O 5 ·nH 2 O (n ≥ 1) as a prototype cathode material for zinc batteries. By coupling the electrochemical measurements, thermogravimetric/differential BatteriesLarge-scale energy storage systems are critical for the integration of renewable energy and electric energy infrastructures. [1][2][3] Among numerous candidates, lithium-ion batteries with organic electrolytes are one of the most attractive options due to their high energy density [4][5][6][7][8][9][10] and mature markets. [11,12] However, for grid scale energy storage, the cost of lithium-ion batteries is still too high, [13,14] and the use of the flammable organic electrolyte in large format batteries poses a severe safety and environmental concern. [15] As an alternative, low-cost aqueous batteries wi...

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Aqueous Lithium‐ion Battery LiTi₂(PO₄)₃/LiMn₂O₄ with High Power and Energy Densities as well as Superior Cycling Stability**

Cited by 380 publications

References 27 publications

Flexible graphene-based lithium ion batteries with ultrafast charge and discharge rates

Flexible graphene-based lithium ion batteries with ultrafast charge and discharge rates

Full open-framework batteries for stationary energy storage

Water‐Lubricated Intercalation in V₂O₅·nH₂O for High‐Capacity and High‐Rate Aqueous Rechargeable Zinc Batteries

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Aqueous Lithium‐ion Battery LiTi2(PO4)3/LiMn2O4 with High Power and Energy Densities as well as Superior Cycling Stability**

Cited by 380 publications

References 27 publications

Flexible graphene-based lithium ion batteries with ultrafast charge and discharge rates

Flexible graphene-based lithium ion batteries with ultrafast charge and discharge rates

Full open-framework batteries for stationary energy storage

Water‐Lubricated Intercalation in V2O5·nH2O for High‐Capacity and High‐Rate Aqueous Rechargeable Zinc Batteries

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Product

Resources

About

Aqueous Lithium‐ion Battery LiTi₂(PO₄)₃/LiMn₂O₄ with High Power and Energy Densities as well as Superior Cycling Stability**

Water‐Lubricated Intercalation in V₂O₅·nH₂O for High‐Capacity and High‐Rate Aqueous Rechargeable Zinc Batteries