Rational Design of Ion Transport Paths at the Interface of Metal–Organic Framework Modified Solid Electrolyte

Xia, Yong; Xu, Nuo; Du, Lulu; Cheng, Yu; Lei, Shulai; Li, Shujuan; Liao, Xiaobin; Shi, Wenchao; Xu, Lin; Mai, Liqiang

doi:10.1021/acsami.0c04387

Cited by 54 publications

(61 citation statements)

References 63 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To calculate the activation energies, the ionic conductivity has been measured at different temperatures from −10 to 120 °C and calculated by Arrhenius relation. The activation energies (E a ) of solid electrolytes were calculated according to the Arrhenius relation from Equation (2) [47]…”

Section: Methodsmentioning

confidence: 99%

“…In addition, due to poor electrical conductivity, permanent porosity, and controllable morphology, MOFs can work as excellent platforms for building ionic conductors and improve the transport of ions. [44][45][46][47] Different MOFs with various pore sizes and specific surface areas have been utilized as solid electrolytes. [48][49][50][51][52] The MOF materials with large pore size and high specific surface area like UIO-67 could load sufficient ionic liquid, which exhibit high ionic conductivity but still hampered by its low t Li + due to large pore size.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Core–Shell MOF‐in‐MOF Nanopore Bifunctional Host of Electrolyte for High‐Performance Solid‐State Lithium Batteries

et al. 2021

Self Cite

View full text Add to dashboard Cite

Solid‐state lithium‐ion batteries with high safety are the encouraging next‐generation rechargeable electrochemical energy storage devices. Yet, low Li+ conductivity of solid electrolyte and instability of solid–solid interface are the key issues hampering the practicability of the solid electrolyte. In this research, core–shell MOF‐in‐MOF nanopores UIO‐66@67 are proposed as a unique bifunctional host of ionic liquid (IL) to fabricate core–shell ionic liquid–solid electrolyte (CSIL). In the current design of CSIL, the shell structure (UIO‐67) has a large pore size and a high specific surface area, boosting the absorption amount of ionic liquid electrolyte, thus increasing the ionic conductivity. Nevertheless, the core structure (UIO‐66) has a small pore size compared to the ionic liquid, which can confine the large ions, decreasing their mobility, and selectively boost the transport of Li+. The CSIL solid electrolyte exhibits considerable enhancement in the lithium transference number (tLi+) and ionic conductivity compared to the homogenous porous host (pure UIO‐66 and UIO‐67). Additionally, the Li|CSIL|Li symmetric batteries maintain a stable polarization of less than 28 mV for more than 1000 h at 1000 µA cm−2. Overall, the results demonstrate the concept of core–shell MOF‐in‐MOF nanopores as a promising bifunctional host of electrolytes for solid‐state or quasi‐solid‐state rechargeable batteries.

show abstract

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

Core–Shell MOF‐in‐MOF Nanopore Bifunctional Host of Electrolyte for High‐Performance Solid‐State Lithium Batteries

et al. 2021

Self Cite

View full text Add to dashboard Cite

show abstract

“…[ 40 ] The ionic liquid (EMIM 0.83 Li 0.17 )TFSI was prepared by mixing LiTFSI and (EMIM)TFSI through magnetic stirring. [ 41 ] All the electrochemical properties of SSLBs were tested at room temperature, lithium compatibility test of SSE was conducted at 50 °C.…”

Section: Methodsmentioning

confidence: 99%

Flexible Nanowire Cathode Membrane with Gradient Interfaces and Rapid Electron/Ion Transport Channels for Solid‐State Lithium Batteries

Cheng

Shu

et al. 2021

Advanced Energy Materials

Self Cite

View full text Add to dashboard Cite

conductivity and interface issues in SSLBs are still two main difficulties to be overcome. Although high ionic conductivity of solid-state electrolytes (SSEs) has been achieved, the solid-solid interface issues severely impede the development of practical application in SSLBs, especially about interfaces in cathode materials. [4,5] In terms of the cathode/SSE interface, one main issue is poor physical contact. [6,7] It results in increased interface impedance and inefficient lithium-ion transport. After several cycles, volume expansion/ contraction of cathode materials will lead to physical delamination. [8,9] Another problem is the intrinsic electrochemical instability between the cathode/SSE interface, especially in SSLBs with sulfide solid electrolytes. [10] As a result, complex side reactions significantly reduce the interface compatibility, and the by-products formed after electrolyte degradation will greatly increase the impedance of batteries. [11,12] Apart from the cathode/SSE interface, the internal interface in the bulk cathode material is another bottleneck. [13] The gaps between particles in the bulk cathode of SSLBs fail to be connected as in the liquid electrolyte. Furthermore, the strength of point-to-point interfacial contact will also be more fragile under the volume change during cycling. [14] To achieve beneficial compatibility between the electrode/ SSE interface, artificial buffer layers were applied to optimize the interfaces in SSLBs. [15,16] They can provide steady interfaces with enhanced physical contacts and chemical/electrochemical stabilities. During the past several years, considerable related researches about coating-modified electrode/SSE interfaces have been reported, and great success has been achieved. [17,18] Although these methods can mitigate the interfacial problems to some extent, point-to-point contact between inside cathode particles is still remained to be solved. To overcome this phenomenon, buffer layers coating on individual cathode particles have been successively reported. [14,19] This core-shell structure makes use of the large contact area and numerous channels for rapid Li + transport, thus cathodes with higher Li + transport efficiency and lower interfacial impedance were fabricated. However, the sharp interfaces between SSE/bulk cathode and cathode/current collector still remain to be solved. The Solid-state lithium batteries (SSLBs) have attracted more attention due to their improved safety and high energy density. Although numerous solid-state electrolytes (SSEs) with high ionic conductivity have been frequently reported, poor solid-solid interfacial contact and interfacial chemical reactions around the cathode in SSLBs can hinder their practical application. Here, a gradient nanowire (NW) cathode is demonstrated for advanced interface engineering in SSLBs by a facile solvent evaporation process. In this unique gradient cathode membrane, one side surface with more ionic conductive polymer provides a smooth contact with SSE, while the other side surface with m...

show abstract

“…Metal–organic frameworks (MOFs), which are assembled by the continuous link of coordination bonds between inorganic metal ions (or metal‐oxo clusters) and polydentate organic ligands, are a highly crystalline subset of these fascinating porous materials. With their permanent porosity, exceptionally high internal surface area, wide chemical variety, and tunable topology, MOFs have been examined for their potential in applications such as gas uptake, 1–8 molecular separation, 1,2,9–16 drug delivery, 1,17–20 sensing, 21–25 ion transport, 1,2,26–31 electronic conduction, 1,32–38 among others 39–44 …”

Section: Introductionmentioning

confidence: 99%

Weak Coordination Bond of Chloromethane: A Unique Way to Activate Metal Node Within an Unstable Metal–Organic Framework DUT‐34

Bae

Lee

Jeong

2021

Bulletin Korean Chem Soc

View full text Add to dashboard Cite

Activation of metal nodes in metal–organic frameworks (MOFs) has been viewed as an essential step prior to their use for various potential applications. So far, a thermal method has been most commonly employed for the activation despite its negative influence on the structural integrity of MOFs. Meanwhile, DUT‐34 has been considered as an ideal platform for the above applications due to its open‐metal sites (OMSs) at the Cu node. However, the activation of DUT‐34 has not been successful because of its fragile characteristics. In this article, we report the coordination‐chemistry‐controlled activation, namely chemical route activation, using chloromethanes. By monitoring the coordination exchangeability of chloromethanes, we demonstrate that the chloromethanes can weakly coordinate at the OMSs. Further, we demonstrate that this coordination exchange is a safe activation method to retain the framework structure of DUT‐34, based on the observation that the DUT‐34 placed in TCM remained intact over 2 months.

show abstract

Rational Design of Ion Transport Paths at the Interface of Metal–Organic Framework Modified Solid Electrolyte

Cited by 54 publications

References 63 publications

Core–Shell MOF‐in‐MOF Nanopore Bifunctional Host of Electrolyte for High‐Performance Solid‐State Lithium Batteries

Core–Shell MOF‐in‐MOF Nanopore Bifunctional Host of Electrolyte for High‐Performance Solid‐State Lithium Batteries

Flexible Nanowire Cathode Membrane with Gradient Interfaces and Rapid Electron/Ion Transport Channels for Solid‐State Lithium Batteries

Weak Coordination Bond of Chloromethane: A Unique Way to Activate Metal Node Within an Unstable Metal–Organic Framework DUT‐34

Contact Info

Product

Resources

About