Liang Qiao's research while affiliated with Yangtze Delta Region Institute of Tsinghua University and other places

... The slope line present in the low-frequency region of Nyquist plot indicates Warburg impedance displaying the diffusion process and the slope line toward 45°indicates the faster diffusion of electrolyte ions. 65,66 However, the slope line of KOH in Mn 3 O 4 @N-doped C toward 45°indicates the more capacitive nature and faster diffusion of OH − electrolyte ions on the electrode surfaces than the other electrolyte solution. The small depressed circle shows the charge-transfer resistance (R ct ) of the electrocatalytic materials. ...

... This renewed attention stems from their prospective uses, which range from serving as electrodes for hydrogen generation via photoelectrochemical (PEC) water splitting to functioning as transparent conductive oxides in optoelectronic devices. Additionally, these compounds are being explored for their potential roles in spintronic and ferroelectric devices [42][43][44][45][46][47][48]. ...

... A double perovskite material with excellent magnetic and electronic properties, such as La 2 B'MnO 6 (B′ = Ni, Co, Cr or other transition elements) has attracted much attention in the field of energy storage [18]. Meng [20]. Singh and et al. synthesized hydrothermally double perovskite mesoporous La 2 CrMnO 6 structure as an efficient electrode material for energy storage applications. ...

... Computed from GCD curves, figure 9(b), the specific capacitance of the AC electrode was found to be 68. 1, 57.9, 45.2, 36.7, and 24.2 Fg −1 at current density of 1.5, 2, 3, 5, and 7 mAcm −2 , respectively. Thus activated carbon may be employed as a suitable negative electrode with a high specific capacitance [51][52][53]. In the case of ASCs, it is imperative that the charges that are accumulated at the positive and negative sites be equalised; specifically, q + must equal q − . ...

... Superconductivity is a quantum phenomenon characterized by zero-resistivity and diamagnetism [1][2][3]. Superconductors showing a high transition temperature, T c , are of great interest for scientific research and technological applications [4,5]. In 1911, Onnes discovered that Hg becomes a superconductor for temperatures below 4.2 K [6]. ...

... Second, the electron pockets contributed by the R-5d (R=Nd, La) degrees of freedom in the parent compounds occupy a small part of the Brillouin zone 40 , having a minor impact on the low-energy physics in the hole-doped case and can be neglected 29,31,35,41 . Furthermore, DMFT calculations indicate that in Srdoped NdNiO 2 superconductors with Sr doping not exceeding 30%, holes primarily reduce the occupancy of the Ni-3d x 2 −y 2 and Nd-5d bands 42,43 , essentially rendering the system as a single Ni-3d x 2 −y 2 orbital. Therefore, given consideration of electronic correlation effects, the single-band Hubbard model is sufficient to capture the low-energy physical properties of NdNiO 2 within an appropriate doping range. ...

... The p-n heterojunction between Co 3 O 4 and ZnO is also an excellent mechanism for achieving suitable results in the sensing improvements of pure Co 3 O 4 generated by the electronic transition in these materials [31][32][33]. Shi et al. reported the synthesis of ZnO@Co 3 O 4 hollow cubes by MOF as the precursor for high-response detection of toluene [34]. Yan et al. presented MOF-derived hollow Co 3 O 4 @ZnO cages and its application for trimethylamine detection with good performance in sensitivity and low response/recovery time [35]. ...

... oxides are commonly utilized as catalysts in alkaline electrolysis for the water HER. 70,71,74 Ling Yuan et al. 75 achieved activated catalysts through an in situ surface reconstruction process on a composite material consisting of cobalt carbonate and cobalt oxide (TiO 2 @CoCH). This in situ reconstruction process induced roughness on the smooth TiO 2 @CoCH surface and generated Co interstitial defects within TiO 2 , thereby promoting the Volmer step. ...

... Although the specific surface area of Co 3 O 4 /ZnO-2 is smaller than that of ZnO, the Co 3 O 4 / ZnO-2 samples owned more chemisorbed oxygen and oxygen vacancies, which may provide more available surface area and facilitate the redox reactions. Consequently, the response of the sensor is remarkably improved and Co 3 O 4 /ZnO-2 is proved to be an ideal sensor [14]. ...

... The first electronic publication of carbon nanotubes was done by Iijima (1991). They are nanometer-scale structures made up of a combination of one or more graphene sheets twisted to form cylindrical shapes that measure over 20 mm long and less than about 100 nm in diameter (Aligayev et al., 2022). There are two types of carbon nanotubes: The multi-walled carbon nanotubes (MWCNTs) have more than one graphene sheet, whereas single-wall carbon nanotubes (SWCNTs) contain only one graphene sheet. ...