The orientation and hybridization of ultrathin two-dimensional (2D) nanostructures on interdigital electrodes is vital for developing high-performance flexible in-plane micro-supercapacitors (MSCs). Despite great progress has been achieved, integrating CuSe and Ni(OH) 2 nanosheets to generate advanced nanohybrids with oriented arrangement of each component and formation of porous frameworks remains a challenge, and their application for in-plane MSCs has not been explored. Herein, the vertically aligned CuSe@Ni(OH) 2 hybrid nanosheet films with hierarchical open channels are skillfully deposited on Au interdigital electrodes/polyethylene terephthalate substrate via a template-free sequential electrodeposition approach, and directly employed to construct in-plane MSCs by choosing polyvinyl alcohol−LiCl gel as both the separator and the solid electrolyte. Because of the unique geometrical structure and combination of intrinsically conductive CuSe and battery-type Ni(OH) 2 components, such hybrid nanosheet films can not only resolve the poor conductivity and restacking problems of Ni(OH) 2 nanosheets but also create the 3D electrons or ions transport pathway. Thus, the in-plane MSCs device fabricated by such hybrid nanosheet films exhibits high volumetric specific capacitance (38.9 F cm −3 ). Moreover, its maximal energy and power density can reach 5.4 mW h cm −3 and 833.2 mW cm −3 , superior to pure CuSe nanosheets, and most of reported carbon materials and metal hydroxides/oxides/sulfides based in-plane MSCs ones. Also, the hybrid nanosheet films device shows excellent cycling performance, good flexibility, and mechanical stability. This work may shed some light on optimizing 2D electrode materials and promote the development of flexible in-plane MSCs or other energy storage systems.

Two-dimensional transition metal oxyhydroxide (MOOH) nanostructures show great potential for application in catalysis, sensing, secondary batteries, and supercapacitors fields. Nonetheless, it is still a challenge to orient and hybridize MOOH nanosheets with carbon-free conductive materials (e.g., CuSe), and their uses in flexible inplane asymmetric microsupercapacitors (AMSCs) are not explored. Herein, vertically oriented CuSe@FeOOH and CuSe@MnOOH hybrid nanosheet frameworks are alternately integrated on Au interdigital electrodes/polyethylene terephthalate substrate through a successive electrodeposition strategy without any template. Because of the unique geometric motifs and composition combination, those hybrid nanosheets frameworks exhibit greatly enhanced specific capacitance (543.9 F g −1 for CuSe@ FeOOH, 422.9 F g −1 for CuSe@MnOOH). An in-plane AMSCs (CuSe@FeOOH// CuSe@MnOOH) is directly assembled by using poly(vinyl alcohol)-LiCl gel as the electrolyte. The as-fabricated AMSCs manifests large areal capacitance (20.47 mF cm −2 ), remarkable cycle stability (95% remained after 32 000 cycles), excellent flexibility and mechanical stability. Moreover, it also exhibits a high volumetric energy density of 16.0 mW h cm −3 and a power density of 1299.4 mW cm −3 , outperforming most recently reported in-plane microsupercapacitors. This work may promote the development of MOOH-based two-dimensional heteronanostructures and accelerate their applications in flexible energy storage or other clean energy fields.

Supercapacitors (SCs) have attracted considerable attention because they possess fast dynamic response, excellent charge-discharge efficiency and superior cycling stability. In addition, SCs can also provide instantaneously a higher power density than batteries and higher energy density than conventional dielectric capacitors [1,2]. Therefore, SCs were widely used in portable electronics, power back-up, electrical vehicles and other electronic devices for the purpose of power enhancement. In recent years, the studies of energy storage devices were concentrated on all-solid-state (ASS) asymmetric SCs, because they are safer with no risk of the leakage of electrolyte [3,4]. Moreover, the asymmetric design can widen the operation voltage window and further improve the energy density of the devices.Electrode active materials are key component to fabricate high performances SCs. Generally, the active materials can be divided into two types based on different electron storage mechanisms: One family, traditional electrical double layered capacitors (EDLCs), such as active carbon (AC) [5], carbon nanotubes (CNT) [6,7], graphene or doped graphene [8,9], which store energy by accumulation of charges in the electrical double layer near the electrode/electrolyte interface. They are very stable during the charge/discharge (CD) process but suffer relatively low specific capacitance. The other family is electrochemical capacitor, which store energy via Faradaic redox reaction at electrode surface, such as NiO [10], Co3O4 [11,12], MnO2 [13-15], NiCo2O4 [16][17][18], NiCoS [19][20][21][22][23] and metalorganic frameworks (MOFs) [24,25], these electroactive materials possess high theoretical capacitance, whereas they lack of mechanical properties and electrical conductivity.Metal selenides have received considerable attention due to its enormous applications in the fields of optics, photocatalysis, and sensor [26][27][28][29]. Compared with the metal oxides, transition metal selenides exhibit much enhanced electrical conductivity due to the anion exchange providing smaller bandgap [30]. In addition, the substitution of oxygen with selenium could create more flexible structure because the electronegativity of selenide is lower than that of oxide. Some metal selenides, such as hierarchical GeSe

[Abstract] A new model-thermal wave model was obtained based on the data from wave analysis of Tarim Basin. The thermal history in the Well TZ10 was simulated using vitrinite reflectance data based on the new model. The thermal wave model was tested and verified by the apatite fission track data in the well. The wave model can be applied to study complicated thermal history of sedimentary basins. This model is suitable to study thermal history in the strata where paleothermometers cannot be found and/or drilling did not reach.

As a significant semiconductor material, cobalt selenide has enormous potential and extensive application prospects in the field of solar cells, photocatalysis and supercapacitor. In this paper, porous CoSe thin films were successfully fabricated on stainless-steel sheet using a facile, effective electrodeposition technique. Electrochemical tests reveal that the specific capacitance reaches as high as 510 F g−1 at the current density of 1 A g−1 with the capacitance retention of 91% over 5000 cycles. An asymmetric all-solid-state supercapacitor is fabricated using CoSe thin film as the positive electrode and activate carbon as the negative electrode. The combined solid device displays a high area specific capacitance of 18.1 mF cm−2 accompanied with good cycling stability, outstanding flexibility and satisfactory mechanical stability. Furthermore, the solid devices connected in series can power the red light-emitting diodes. The results show great potential for preparing large scale high energy density storage systems.