High conductive, long-term durable, anhydrous proton conductive solid-state electrolyte based on a metal-organic framework impregnated with binary ionic liquids: Synthesis, characteristic and effect of anion

Chen, Hui; Han, Song; Liu, Ruiheng; Chen, Tengfei; Bi, Kai-Lun; Liang, Jianbo; Deng, Yu‐Heng; Wan, Chong‐Qing

doi:10.1016/j.jpowsour.2017.11.089

Cited by 114 publications

(61 citation statements)

References 48 publications

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“…Metal-organic frameworks( MOFs) have received extensive attention and undergone rapid development in recent years, [8][9][10][11][12][13][14][15] as they have designable and tunable structures through crystal engineering and ligand functionalization. [8,[16][17][18] Thus, MOFs have shown great potential in variousa pplications relatedt oe nergy and environmental sustainability.…”

Section: Introductionmentioning

confidence: 99%

Two Highly Stable Proton Conductive Cobalt(II)–Organic Frameworks as Impedance Sensors for Formic Acid

Liu

Shi

Wang

et al. 2019

Chemistry A European J

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Metal-organic frameworks (MOFs) have been extensively exploreda sa dvanced chemical sensors in recent years. However,t here are few studies on MOFs as acidic gas sensors, especiallyp rotonc onductive MOFs.I nt his work, two new proton-conducting 3D MOFs,{ [Co 3 (p-CPhHIDC) 2 (4,4'-bipy)(H 2 O)]·2H 2 O} n (1)( p-CPhH 4 IDC = 2-(4-carboxylphenyl)-1 H-imidazole-4,5-dicarboxylic acid;4 ,4'-bipy = 4,4'-bipyridine) and {[Co 3 (p-CPhHIDC) 2 (bpe)(H 2 O)]·3H 2 O} n (2) (bpe = trans-1,2-bis(4-pyridyl)ethylene) have been solvothermally prepared and investigated their formic acid sensing properties. Both MOFs 1 and 2 show temperature-and humidity-dependent protonc onductive properties and exhibit optimizedp roton conductivities of 1.04 10 À3 and 7.02 10 À4 Scma t9 8% relative humidity (RH) and 100 8C, respectively.T he large number of uncoordinated carboxylic acid sites, free and coordination water molecules, andh ydrogen-bondingn etworks inside the frameworks are favorable to the proton transfer.B ym easuringt he impedance values after exposure to formic acid vapor at 98 %o r6 8% RH and 25 8C, both MOFs indicater eproducibly high sensitivity to the analyte. The detection limit of formic acid vapor is as low as 35 ppm for 1 and 70 ppm for 2.M eanwhile, both MOFs also show commendable selectivity towards formic acid among interfering solutions. The proton conducting and formic acid sensingm echanismsh ave been suggested according to the structural analysis, E a calculations, N 2 and water vapor absorptions, PXRD and SEM measurements. This work will open an ew avenue for proton-conductive MOFbased impedance sensors and promote the potentiala pplication of these MOFs fori ndirectly monitoring the concentrationsofformic acid vapors.[a] R.

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Section: Introductionmentioning

confidence: 99%

Two Highly Stable Proton Conductive Cobalt(II)–Organic Frameworks as Impedance Sensors for Formic Acid

Liu

Shi

Wang

et al. 2019

Chemistry A European J

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“…Enlarging either the operating cell voltage ( U ) or increasing capacitance ( C ) of the SCs devices are effective to improve their energy density (

E = \frac{1}{2}

CU 2 ). Organic electrolytes can usually offer a wide stable voltage window of 2.5–4 V, but suffer from low ionic conductivity (≈1 × 10 −3 S cm −1 ), high cost, and ecologically unfriendly as well as rigorous need for packing requirement . As a promising alternative candidate, aqueous electrolytes are attracting numerous attentions in terms of low‐cost, environmental benignity, and superior safety.…”

Section: Introductionmentioning

confidence: 99%

Oxygen Defect Modulated Titanium Niobium Oxide on Graphene Arrays: An Open‐Door for High‐Performance 1.4 V Symmetric Supercapacitor in Acidic Aqueous Electrolyte

Zhang

Deng

Zeng

et al. 2018

Adv Funct Materials

116

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Despite appealing supercapacitive properties, the acidic aqueous supercapacitors (SCs) are still suffering from low operating voltage (<1 V) leading to unsatisfactory energy densities. Herein, for the first time, it is reported that the oxygen defect modulated Ti 2 Nb 10 O 29−x (TNO x ) on interlinked graphene array (denoted as TNO x G) can achieve a wide potential window up to 1.8 V in 1 m H 2 SO 4 electrolyte and deliver an extremely high capacitance up to 368.9 F g −1 at 0.5 A g −1 . Accompanying the improved charge transfer efficiency and preferable H ion diffusion, the oxygen defects in TNO x G are capable of stimulating more pseudocapacitive behavior and simultaneously suppressing oxygen evolution reaction. Furthermore, a 1.4 V high voltage quasi-solid-state TNO x G-based symmetric supercapacitor is demonstrated, yielding a maximum energy density of 0.58 mWh cm −3 at a power density of 0.57 W cm −3 and exceptionally excellent cycling durability. It is believed that this strategy of oxygen defect modulation to optimize reaction kinetics will lead to further improvements in the performance of high-voltage aqueous SCs.

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“…After immersing MIL‐101‐SO 3 H into Na 2 SO 4 solution for 48 h and then following by thorough activation, the Na content of the final product was identified to be 4.81 wt % based on ICP‐OES analysis which is comparable to the theory value of 4.59 wt % in MIL‐101‐SO 3 Na, implying that the H + of −SO 3 H in MIL‐101‐SO 3 H was completely exchanged by Na + . Moreover, the peaks of MIL‐101‐SO 3 Na is in correspondence with that of MIL‐101‐SO 3 H, demonstrating the crystalline structure was intact and unchanged during the ion‐exchange process (Figure S1) . Then MIL‐101‐SO 3 Na was obtained successfully, and its formula could be determined as {Cr 3 (H 2 O) 3 O[(O 2 C)−C 6 H 3 (SO 3 Na)−(CO 2 )] 2 [(O 2 C)−C 6 H 3 (SO 3 )−(CO 2 )]} according to the reported formula of MIL‐101‐SO 3 H …”

Section: Resultsmentioning

confidence: 99%

“…[36] Moreover, the peaks of MIL-101-SO 3 Na is in correspondence with that of MIL-101-SO 3 H, demonstrating the crystalline structure was intact and unchanged during the ion-exchange process ( Figure S1). [32] Then MIL-101-SO 3 Na was obtained successfully, and its formula could be determined as {Cr 3…”

Section: Physical Characterizationmentioning

confidence: 99%

Combining Ionic Liquids and Sodium Salts into Metal‐Organic Framework for High‐Performance Ionic Conduction

Yang

Zhang

et al. 2019

ChemElectroChem

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Developing stable conductive materials with high conductivity for sodium ion (Na+) batteries attracts ever‐increasing attention. In this work, MOF‐based solid Na+‐conducting composites functionalized by ionic liquids (ILs) were explored through introducing five kinds of ILs and their corresponding sodium salts into the pores of MIL‐101‐SO3Na. The pore‐filling fraction of MIL‐101‐SO3Na was established and revealed as a key factor to enhance the ionic conductivity of the composites. Na‐salts could further improved the conductivity by increasing the number of conductive ions. Furthermore, all ILs and Na‐salts@MIL‐101‐SO3Na hybrid composites showed sharply enhanced ionic conductivity and displayed low activation energy. Particularly, as the pore‐filling faction elevating to 96.94 % with [Emim][BF4] and NaBF4 in the pores of MIL‐101‐SO3Na the ionic conductivity reached up to 1.32×10−2 S cm−1 and stabilized within 30 days at 150 °C. This study on Na+‐conduction in a MOF‐based system functionalized by ILs, providing guidance for exploring new solid ionic conducting materials.

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High conductive, long-term durable, anhydrous proton conductive solid-state electrolyte based on a metal-organic framework impregnated with binary ionic liquids: Synthesis, characteristic and effect of anion

Cited by 114 publications

References 48 publications

Two Highly Stable Proton Conductive Cobalt(II)–Organic Frameworks as Impedance Sensors for Formic Acid

Two Highly Stable Proton Conductive Cobalt(II)–Organic Frameworks as Impedance Sensors for Formic Acid

Oxygen Defect Modulated Titanium Niobium Oxide on Graphene Arrays: An Open‐Door for High‐Performance 1.4 V Symmetric Supercapacitor in Acidic Aqueous Electrolyte

Combining Ionic Liquids and Sodium Salts into Metal‐Organic Framework for High‐Performance Ionic Conduction

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