Biomimetic temperature-gated 2D cationic nanochannels for controllable osmotic power harvesting

Wu, Congrong; Xiao, Tianliang; Tang, Jiakui; Zhang, Qianqian; Liu, Zhaoyue; Liu, Jingbing; Wang, Hao

doi:10.1016/j.nanoen.2020.105113

Cited by 67 publications

(46 citation statements)

References 45 publications

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“…The regulation of ion transport of the MOFs@PP separator was studied using a typical ionic current measurement. [25] The KCl aqueous solution was chosen as the electrolyte for this test because of the pretty close values of diffusion coefficient between K + (1.96 × 10 −9 m 2 s −1 ) and Cl − (2.03 × 10 −9 m 2 s −1 ). [25,26] Before the measurement, the separators were dipped in deionized water for 24 h to insure the sock of water into the membranes attributed to the poor hydrophily of the PP separator (Figure S6, Supporting information).…”

Section: Functional Separator Regulating Ion Transportmentioning

confidence: 99%

“…[25] The KCl aqueous solution was chosen as the electrolyte for this test because of the pretty close values of diffusion coefficient between K + (1.96 × 10 −9 m 2 s −1 ) and Cl − (2.03 × 10 −9 m 2 s −1 ). [25,26] Before the measurement, the separators were dipped in deionized water for 24 h to insure the sock of water into the membranes attributed to the poor hydrophily of the PP separator (Figure S6, Supporting information). As demonstrated in Figure 2a, the ionic current-voltage (I-V) curves at different concentrations showed liner ohmic features and the transmembrane ionic conductance could be acquired.…”

Section: Functional Separator Regulating Ion Transportmentioning

confidence: 99%

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Functional Separators Regulating Ion Transport Enabled by Metal‐Organic Frameworks for Dendrite‐Free Lithium Metal Anodes

Hao

Zhao

et al. 2021

Adv Funct Materials

Self Cite

173

102

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Developing high energy density lithium secondary batteries is pivotal for satisfying the increasing demand in advanced energy storage systems. Lithium metal batteries (LMBs) have attracted growing attention due to their high theoretical capacity, but the lithium dendrites issue severely fetter their real‐world applications. It is found that reducing anion migration near lithium metal prolongs the nucleation time of dendrites, meanwhile, promoting homogeneous lithium deposition suppresses the dendritic growth. Thus, regulating ion transport in LMBs is a feasible and effective strategy for addressing the issues. Based on this, a functional separator is developed to regulate ion transport by utilizing a well‐designed metal‐organic frameworks (MOFs) coating to functionalize polypropylene (PP) separator. The well‐defined intrinsic nanochannels in MOFs and the negatively charged gap channels both restricts the free migration of anions, contributing to a high Li+ transference number of 0.68. Meanwhile, the MOFs coating with uniform porous structure promotes homogeneous lithium deposition. Consequently, a highly‐stable Li plating/stripping cycling for over 150 h is achieved. Furthermore, implementation of the separator enables LMBs with high discharge capacity, prominent rate performance and good capacity retention. This work is anticipated to aid developement of dendrite‐free LMBs by utilizing advanced separators with ion transport management.

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Section: Functional Separator Regulating Ion Transportmentioning

confidence: 99%

Section: Functional Separator Regulating Ion Transportmentioning

confidence: 99%

Functional Separators Regulating Ion Transport Enabled by Metal‐Organic Frameworks for Dendrite‐Free Lithium Metal Anodes

Hao

Zhao

et al. 2021

Adv Funct Materials

Self Cite

173

102

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show abstract

“…Well-known examples of these materials for developing SGE devices are graphene, 123,168,233 hexagonal boron nitride, carbon nitride, 166 MXene, 167 molybdenum disulde, 172 among others. 116,171,234 In the case of 2D layered membranes the interstitial spaces among the nanosheets act as "lamellar channels" enabling ion transport. As previously explained, the combination of ultrathin membranes and highly charged "lamellar channels" can be a key in the development of highly efficient membranes for osmotic energy conversion due to their intrinsic high ion selectivity and lower resistance.…”

Section: D-materials Based and Ultrathin Membranes For The Development Of Sge Nanodevicesmentioning

confidence: 99%

Nanofluidic osmotic power generators – advanced nanoporous membranes and nanochannels for blue energy harvesting

et al. 2021

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“…Thermo-osmotic energy conversion based on reverse electrodialysis (RED) has shown particular promise, as it allows operation at relatively low temperatures compared with those of other thermodynamic cycles and does not have any environmental risk [12][13][14][15][16] . RED-based energy conversion is based on charge separation via ion-permeation membranes to convert the chemical potential/temperature gradient into electricity.…”

Section: Introductionmentioning

confidence: 99%

Anomalous Thermo-osmotic Conversion Performance of Ionic Covalent-Organic-Framework Membranes in Response to Charge Variations

Sun

Xian

Zuo

et al. 2022

Preprint

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The development of efficient thermo-osmotic energy conversion devices has fascinated scientists and engineers for several decades in terms of satisfying the growing energy demand. The fabrication of ionic membranes with a high charge population is known to be a critical factor in the design of high-performance power generators for achieving high permselectivity and, consequently, high power extraction efficiency. Herein, we experimentally demonstrated that the thermo-osmotic energy conversion efficiency was improved by increasing the membrane charge density; however, this enhancement occurred only within a narrow window and subsequently exhibited a plateau over a threshold density. The complex interplay between pore−pore interactions and fluid structuration for ion transport across the upscaled nanoporous membranes helped explain the obtained results with the aid of numerical simulations. Consequently, the power generation efficiency of the multipore membrane deteriorated, deviating considerably from the case of simple linear extrapolation of the behavior of the single-pore counterparts. A plateau in the output electric power was observed at a moderate charge density, affording a value of 210 W m−2 at a 50-fold salinity difference with a temperature gradient of 40 K. This study has far-reaching implications for discerning an optimal range of membrane charge populations for augmenting the energy extraction, rather than intuitively focusing on achieving high densities.

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Biomimetic temperature-gated 2D cationic nanochannels for controllable osmotic power harvesting

Cited by 67 publications

References 45 publications

Functional Separators Regulating Ion Transport Enabled by Metal‐Organic Frameworks for Dendrite‐Free Lithium Metal Anodes

Functional Separators Regulating Ion Transport Enabled by Metal‐Organic Frameworks for Dendrite‐Free Lithium Metal Anodes

Nanofluidic osmotic power generators – advanced nanoporous membranes and nanochannels for blue energy harvesting

Anomalous Thermo-osmotic Conversion Performance of Ionic Covalent-Organic-Framework Membranes in Response to Charge Variations

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