Ion-Transport Design for High-Performance Na⁺-Based Electrochromics

Abstract

Sodium ion (Na)-based electrochemical systems have been extensively investigated in batteries and supercapacitors and also can be quality candidates for electrochromic (EC) devices. However, poor diffusion kinetics and severe EC performance degradation occur during the intercalation/deintercalation processes because the ionic radii of Na are larger than those of conventional intercalation ions. Here, through intentional design of ion-transport channels in metal-organic frameworks (MOFs), Na serves as an efficient intercalation ion for incorporation into a nanostructured electrode with a high diffusion coefficient of approximately 10 cm s. As a result, the well-designed MOF-based EC device demonstrates desirable Na EC performance, including fast switching speed, multicolor switching, and high stability. A smart "quick response code" display is fabricated using a mask-free laser writing method for application in the "Internet of Things". In addition, the concept of ion transport pathway design can be widely adopted for fabricating high-performance ion intercalation materials and devices for consumer electronics.

Engineered Multifunctional Nanomedicine for Simultaneous Stereotactic Chemotherapy and Inhibited Osteolysis in an Orthotopic Model of Bone Metastasis

“…Cancer‐associated osteolysis can be greatly avoided by inhibiting osteoclast formation and promoting osteogenic differentiation mediated by Ald. Due to the deep penetration and high spatiotemporal resolution of the fluorescence imaging in the second near‐infrared window (NIR‐II), the in vivo targeting delivery of DOX to the bone tumor was clearly visualized by the NIR‐II fluorescence. In addition, the therapeutic effect of Ald/DOX@Ag 2 S on an orthotopic bone tumor was in situ monitored by taking advantage of the biological luminescence of luciferase‐expressing human lung carcinoma A549 (Luc‐A549) cell xenografted in living mice.…”

“…The preparation of Ald/DOX@Ag 2 S was slightly modified from the previous report (see the Supporting Information for details) . The as‐prepared Ald/DOX@Ag 2 S was systematically characterized.…”

Flexible and High-Performance Electrochromic Devices Enabled by Self-Assembled 2D TiO2/MXene Heterostructures

“…The absorption coefficient change Δα can be obtained by Δα = αcαb ≈ [ln(Tc/Tb)]/L, which is a physical parameter independent of geometries of the film, thus can be used to compare different technologies. Δα of the LLIA TiO2 film is extracted to be 0.12 nm -1 , which is almost one order of magnitude higher than the previously reported TiO2-based EC materials assembled by other methods (Table S4) (20,(43)(44)(45)(46)(47)(48)(49)(50)(51)(52)(53)(54), suggesting a very high utilization of TiO2 in the LLIA films during the EC process.…”

Coupled Electrical Conduction in Coordination Polymers: From Electrons/Ions to Mixed Charge Carriers

“…Li et al provided some models using the NDI-based electrochromic ( Figure 10). [38] These devices were constructed by a laser ablation method. Each part of the solid electrochromic devices could be regulated by bias voltage which ranges from À 2.5 to 1 V independently, and exhibits different colors including "transparent", "red", and "dark blue".…”