Electrochemical properties of TiP2O7 and LiTi2(PO4)3 as anode material for lithium ion battery with aqueous solution electrolyte

Wang, Haibo; Huang, Kang; Zeng, Yuqun; Yang, Sen; Chen, Liquan

doi:10.1016/j.electacta.2006.10.010

Cited by 189 publications

(153 citation statements)

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“…4C we compared our aqueous Li + /S batteries against other successful aqueous systems reported previously. In most cases, energy densities for aqueous systems were below 78 Wh·kg −1 (10,(38)(39)(40) …”

Section: Resultsmentioning

confidence: 99%

Unique aqueous Li-ion/sulfur chemistry with high energy density and reversibility

Yang

Suo

Borodin

et al. 2017

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

177

182

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Leveraging the most recent success in expanding the electrochemical stability window of aqueous electrolytes, in this work we create a unique Li-ion/sulfur chemistry of both high energy density and safety. We show that in the superconcentrated aqueous electrolyte, lithiation of sulfur experiences phase change from a highorder polysulfide to low-order polysulfides through solid-liquid two-phase reaction pathway, where the liquid polysulfide phase in the sulfide electrode is thermodynamically phase-separated from the superconcentrated aqueous electrolyte. The sulfur with solid-liquid two-phase exhibits a reversible capacity of 1,327 mAh/(g of S), along with fast reaction kinetics and negligible polysulfide dissolution. By coupling a sulfur anode with different Li-ion cathode materials, the aqueous Li-ion/sulfur full cell delivers record-high energy densities up to 200 Wh/(kg of total electrode mass) for >1,000 cycles at ∼100% coulombic efficiency. These performances already approach that of commercial lithium-ion batteries (LIBs) using a nonaqueous electrolyte, along with intrinsic safety not possessed by the latter. The excellent performance of this aqueous battery chemistry significantly promotes the practical possibility of aqueous LIBs in large-format applications.water-in-salt | rechargeable aqueous battery | aqueous sulfur battery | gel polymer electrolyte | phase separation I n the past two decades, rechargeable lithium-ion batteries (LIBs) have revolutionized consumer electronics with their high energy density and excellent cycling stability, and are the state-of-the-art candidates for applications ranging from kilowatt hours for electric vehicles up to megawatt hours for grids (1, 2). The latter applications in large-format present much more stringent requirements for safety, cost, and environmental friendliness, besides energy density and cycle life. The shortcomings of LIB are mostly due to the flammable and toxic nonaqueous electrolytes and moderate energy densities (<400 Wh·kg −1 ) provided by the electrochemical couples currently used (3). Among the various "beyond Li-ion" high-energy chemistries (>500 Wh·kg −1 ) explored currently, the nonaqueous lithium/sulfur (Li/S) battery based on sulfur as a cathode (theoretical capacity of 1,675 mAh·g −1 ) and metallic lithium as an anode seems to be the most practical, as evidenced by the mushrooming literature and significant advances in this system in the past 5 y (4-7). However, commercialization of this system still faces challenges because of severe safety concerns associated with the dendrite growth of metallic Li anode in highly inflammable ether-based electrolytes (8), and the high self-discharge associated with parasitic shuttling of the intermediate polysulfide species. Moreover, the moisture-sensitive nature of the nonaqueous electrolyte would contribute significantly to the cost of the Li/S battery pack due to the stringent moisture-exclusion infrastructure required during the manufacturing, processing, and packaging of the cells. The indispensabl...

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Section: Resultsmentioning

confidence: 99%

Unique aqueous Li-ion/sulfur chemistry with high energy density and reversibility

Yang

Suo

Borodin

et al. 2017

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

177

182

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“…20,21 However, this redox potential makes TiP 2 O 7 an ideal anode material candidate for aqueous lithium-ion batteries, 22,23 which have been recently explored by several research groups. 21,22 TiP 2 O 7 has a 3D framework structure with a corner sharing a TiO 6 octahedra and a PO 4 tetrahedra, and a phase change reaction between TiP 2 O 7 and LiTiP 2 O 7 . [20][21][22][23][24][25][26][27] Such an open frame structure enables rapid Li + insertion and extraction and good thermal stability.…”

Section: -19mentioning

confidence: 99%

“…[20][21][22][23][24][25][26][27] Such an open frame structure enables rapid Li + insertion and extraction and good thermal stability. However, the low electronic conductivity remains a major hurdle for its practical applications.23,26 A carbon coating on TiP 2 O 7 can serve two purposes: (1) it improves the kinetics of electron transfer, and (2) [22,28]. However, they found that their cells had limited cycling performance due to the dissolution of TiP 2 O 7 over time.…”

mentioning

confidence: 99%

“…21,22 TiP 2 O 7 has a 3D framework structure with a corner sharing a TiO 6 octahedra and a PO 4 tetrahedra, and a phase change reaction between TiP 2 O 7 and LiTiP 2 O 7 . [20][21][22][23][24][25][26][27] Such an open frame structure enables rapid Li + insertion and extraction and good thermal stability. However, the low electronic conductivity remains a major hurdle for its practical applications.…”

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confidence: 99%

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High Performance TiP₂O₇Based Intercalation Negative Electrode for Aqueous Lithium-Ion Batteries via a Facile Synthetic Route

Wu¹,

Shanbhag²,

Wise³

et al. 2015

J. Electrochem. Soc.

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A composite TiP 2 O 7 /amorphous carbon material (C-TiP 2 O 7 ) was prepared by an intensive mechanical mixing/solid-state synthesis method at 800 • C. Physical properties were characterized via powder X-ray diffraction, Rietveld refinement, SEM, BET and TGA. Electrochemical performance was evaluated in both a three electrode test setup and two electrode coin cells via cyclic voltammetry, electrochemical impedance spectroscopy and galvanostatic cycling tests. The C-TiP 2 O 7 composite demonstrated excellent cycling performance in 1 M Li 2 SO 4 when matched with LiMn 2 O 4 as a positive electrode: when cycled at C/2 for 150 cycles, the capacity retention is over 91% with coulombic efficiencies exceeding 99%. The initial discharge capacity obtained at a C/10 rate is 91 mAh/g which is about 75% of theoretical capacity 121 mAh/g. The apparent diffusion coefficient of C-TiP 2 O 7 composite calculated from cyclic voltammetry result is 3. 3-6 However these materials typically suffer from inherently low electronic conductivity.2 Several strategies such as carbon coating, doping and conductive polymer coating have been developed to improve the electrochemical performance of polyanion-based materials for battery applications. 7-19A less explored phase, TiP 2 O 7 , is not a promising cathode candidate for lithium-ion battery due to its low redox potential of 2.6 V versus Li/Li + . 20,21 However, this redox potential makes TiP 2 O 7 an ideal anode material candidate for aqueous lithium-ion batteries, 22,23 which have been recently explored by several research groups. 21,22 TiP 2 O 7 has a 3D framework structure with a corner sharing a TiO 6 octahedra and a PO 4 tetrahedra, and a phase change reaction between TiP 2 O 7 and LiTiP 2 O 7 . [20][21][22][23][24][25][26][27] Such an open frame structure enables rapid Li + insertion and extraction and good thermal stability. However, the low electronic conductivity remains a major hurdle for its practical applications.23,26 A carbon coating on TiP 2 O 7 can serve two purposes: (1) it improves the kinetics of electron transfer, and (2) [22,28]. However, they found that their cells had limited cycling performance due to the dissolution of TiP 2 O 7 over time.Combining high energy mechanical alloying with intimate carbon coating has proven effective in improving electrochemical performance of polyanion-based materials. 19,[29][30][31][32] Ball milling with intimate carbon helps to prepare a homogenous mixture of precursors and reduce particle size during following thermal treatment. In addition, this combination can decrease the thermal treatment time needed. In this study, we demonstrated C-TiP 2 O 7 composite prepared by high energy mechanical alloying combined with intimate carbon coating has superior cycling performance in aqueous lithium-ion electrolyte. * Electrochemical Society Active Member.z E-mail: whitacre@andrew.cmu.edu ExperimentalSynthesis of electrode materials.-The kinetically assisted synthesis process includes following steps: (1) the precursors for synthesizing C-Ti...

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“…In the area of energy storage research, aqueous rechargeable metal-ion batteries have attracted interest as possible substitutes for commercial aqueous batteries, such as lead-acid, Ni-Cd, and Ni-MH, because of their safety, low cost, high ionic conductivity, and environmental friendliness [1][2][3][4][5][6][7][8]. Among the various available systems, aqueous rechargeable zinc-ion batteries (ARZIBs) based on electrochemical insertion/extraction reactions of zinc ions have been widely studied and developed because of their advantages, including nontoxicity and safety [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

A concentrated electrolyte for zinc hexacyanoferrate electrodes in aqueous rechargeable zinc-ion batteries

Kim

Lee

Jeong

2018

IOP Conf. Ser.: Mater. Sci. Eng.

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Abstract. In this study, a concentrated electrolyte was applied in an aqueous rechargeable zinc-ion battery system with a zinc hexacyanoferrate (ZnHCF) electrode to improve the electrochemical performance by changing the hydration number of the zinc ions. To optimize the active material, ZnHCF was synthesized using aqueous solutions of zinc nitrate with three different concentrations. The synthesized materials exhibited some differences in structure, crystallinity, and particle size, as observed by X-ray diffraction and scanning electron microscopy. Subsequently, these well-structured materials were applied in electrochemical tests. A more than two-fold improvement in the charge/discharge capacities was observed when the concentrated electrolyte was used instead of the dilute electrolyte. Additionally, the cycling performance observed in the concentrated electrolyte was superior to that in the dilute electrolyte. This improvement in the electrochemical performance may result from a decrease in the hydration number of the zinc ions in the concentrated electrolyte.

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Electrochemical properties of TiP2O7 and LiTi2(PO4)3 as anode material for lithium ion battery with aqueous solution electrolyte

Cited by 189 publications

References 14 publications

Unique aqueous Li-ion/sulfur chemistry with high energy density and reversibility

Unique aqueous Li-ion/sulfur chemistry with high energy density and reversibility

High Performance TiP₂O₇Based Intercalation Negative Electrode for Aqueous Lithium-Ion Batteries via a Facile Synthetic Route

A concentrated electrolyte for zinc hexacyanoferrate electrodes in aqueous rechargeable zinc-ion batteries

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Electrochemical properties of TiP2O7 and LiTi2(PO4)3 as anode material for lithium ion battery with aqueous solution electrolyte

Cited by 189 publications

References 14 publications

Unique aqueous Li-ion/sulfur chemistry with high energy density and reversibility

Unique aqueous Li-ion/sulfur chemistry with high energy density and reversibility

High Performance TiP2O7Based Intercalation Negative Electrode for Aqueous Lithium-Ion Batteries via a Facile Synthetic Route

A concentrated electrolyte for zinc hexacyanoferrate electrodes in aqueous rechargeable zinc-ion batteries

Contact Info

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Resources

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High Performance TiP₂O₇Based Intercalation Negative Electrode for Aqueous Lithium-Ion Batteries via a Facile Synthetic Route