Nat. J. Hydrogen Energy 44, 15072–15086. Int. Effects of nano-composites (FeB, FeB/CNTs) on hydrogen storage properties of MgH2. High capacity hydrogen storage: basic aspects, new developments and milestones. Yet, a spacer interferes in hole transport. Two-dimensional ZrCo nanosheets as highly effective catalyst for hydrogen storage in MgH2. Mg–TM (TM: Ti, Nb, V, Co, Mo or Ni) core–shell like nanostructures: synthesis, hydrogen storage performance and catalytic mechanism. The VTiCr catalyst was uniformly dispersed on the surface of MgH2 matrix. 141, 1665–1671. (2014). Articles, Changchun University of Science and Technology, China. Energy. After solving the issue of CuSCN HTM's reacting with Au cathode under photo-bias by inserting a reduced graphene oxide spacer between the HTM and the cathode, the unencapsulated device (D1) retained 95% of initial PCE after 1,000-h 60°C ATT in N2. D0~D14's short-circuit photocurrent (JSC), open-circuit voltage (VOC), and fill factors (FFs) can be found in Supplementary Table 1. During perovskite growth, the OAM assemblies act like scaffolds restricting grains' tilt and enable the grains to grow perpendicularly to the substrate. Oxygen-induced doping of spiro-MeOTAD in solid-state dye-sensitized solar cells and its impact on device performance. (2012). Effects of different carbon materials on MgH2 decomposition. For example, the easy-to-fabricate p–i–n device structure may be applied with a perovskite precursor solution including ratio-optimized dopants and a crystallization-promoting additive like SN filmed to increase the crystallinity; an OASO4 solution may be coated onto the pristine perovskite film to enhance its moisture resistivity. doi: 10.1016/j.scriptamat.2004.12.020, Yu, H., Bennici, S., and Auroux, A. The easy-to-fabricate p–i–n device structure of cathode/HTM/perovskite/C60/BCP/anode was proven effective for PSCs (Liu et al., 2018). A crystallization-promoting additive promotes a photoactive perovskite's crystal growth. Compd. Defect sites within a perovskite act as charge recombination centers and migration pathways for perovskite ions under photo-bias; the migration changes the perovskite's composition (Gao et al., 2020b). 35, 3555–3564. (2019). Inorganic Chemistry Frontiers publishes research articles, reviews, notes, comments and methods covering all areas of inorganic chemistry. Rep. 6:37335. doi: 10.1038/srep37335, El-Eskandarany, M. S., Shaban, E., Al-Matrouk, H., Behbehani, M., Alkandary, A., Aldakheel, F., et al. In situ synthesized one-dimensional porous Ni@C nanorods as catalysts for hydrogen storage properties of MgH2. J. J. Int. 1000 h operational lifetime perovskite solar cells by ambient melting encapsulation. 131, 6050–6051. 805, 295–302. The power conversion efficiency (PCE) of organic–inorganic lead halide perovskite solar cells (PSCs) has exceeded 25%, approaching 26.7% of crystalline silicon solar cells (National Renewable Energy Laboratory, 2020). doi: 10.1021/acsami.9b19538, Grancini, G., Roldán-Carmona, C., Zimmermann, I., Mosconi, E., Lee, X., Martineau, D., et al. J. Confinement of MgH\r, 2\r nanoclusters within nanoporous aerogel scaffold materials. J. Nat. J. Hydrogen Energy 38, 2778–2784. (2019). The interface between the 2D and 3D perovskites oriented in a preferential growth direction of the 3D phase. doi: 10.1021/jacs.8b11610, Gao, X. X., Luo, W., Zhang, Y., Hu, R., Zhang, B., Züttel, A., et al. 645, S509–S512. For example, D11 retained 92% of initial PCE after 1,500-h open-circuit light-soaking, but the PCE dropped to 91% of initial value only after 500-h MPP tracking. Power Sources 396, 796–802. Soc. 8:15684. doi: 10.1038/ncomms15684, Green, M. A., Dunlop, E. D., Levi, D. H., Hohl-Ebinger, J., Yoshita, M., and Ho-Baillie, A. W. (2019). Phys. Research direction toward theoretical efficiency in perovskite solar cells. Considering the Shockley–Queisser (SQ) limit (theoretical PCE limit; see Park and Segawa, 2018) and using FFs of well-developed solar cells as references (Green et al., 2019), there are still ~20% for improvements in these aspects. 6, 261–268. First-principles investigation of the effects of Ni and Y co-doped on destabilized MgH2. Figure 1. (2009) studied the catalytic effect of ZrCrNi alloy on hydrogenation properties of MgH2. doi: 10.1016/j.joule.2019.06.014, Kojima, A., Teshima, K., Shirai, Y., and Miyasaka, T. (2009). A striking catalytic effect of facile synthesized ZrMn2 nanoparticles on the de/rehydrogenation properties of MgH2. From the TPD and DSC curves, the peak temperature of desorption for MgH2+5wt% Fe@G was 281.7°C, lower than that of exhibited peak ball-milled MgH2. ZS wrote the first draft of the manuscript. SEM images confirmed that the CNT was not destroyed after the short milling process and indicated that the sample with CNT appeared to have less agglomeration. Catalytic effect of transition metals on hydrogen sorption in nanocrystalline ball milled MgH2 -Tm (Tm=Ti, V, Mn, Fe and Ni) systems. Experimental and first principle studies on hydrogen desorption behavior of graphene nanofibre catalyzed MgH2. Nat. J. Phys. Cycling results illustrated no significant loss of hydrogen storage capacity and the MgH2-5 wt% Ni@C composite had favorable cycle stability. Mater. Effect of V, Nb, Ti and graphite additions on the hydrogen desorption temperature of magnesium hydride. A fluorene-terminated hole-transporting material for highly efficient and stable perovskite solar cells. A. K., Yaakob, Z., Lim, K. L., and Timmiati, S. N. (2016). 12, 4925–4931. Sci. Received: 14 April 2020; Accepted: 28 May 2020; Published: 02 July 2020. Although the results were encouraging, to more explicitly reveal a PSC's realistic performance, future researchers are suggested to use an AAT condition with unencapsulated PSC aged under appropriate, controlled humidity and temperature. 52, 719–724. Inorganic Chemistry Frontiers belongs to Frontiers Journal portfolio, an enterprising collaboration between the Chinese Chemical Society and the Royal Society of Chemistry. J. Hydrogen Energy 43, 7440–7446. I0 further initiate chemical chain reactions to accelerate PSC degradation. Air-stable magnesium nanocomposites provide rapid and high-capacity hydrogen storage without using heavy-metal catalysts. Dimensional effects of nanostructured Mg/MgH2 for hydrogen storage applications: a review. In summary, nanoscale transition metal alloys together with carbon materials would be a promising catalyst for realizing the practical application of MgH2. Comparison of impact index for the last two years (2018 and 2017) IF of Inorganic Chemistry Frontiers is increased by a factor of 0.74 compared to 2017. n–i–p PSCs suffer from the problems above, and their most used anode-ETM combination, i.e., FTO/c-TiO2/mp-TiO2, involving high-temperature processes such as spray pyrolysis, is difficult to fabricate. Front. Interfaces 11, 38868–38879. J. Khodaparast and Rajabi (2015) prepared the MgH2+5 at% Ti-Mn-Cr sample by milling the Ti-Mn-Cr alloy produced by melt spinning method with pure MgH2. 107:243907. doi: 10.1063/1.4938245, He, Q., Zhu, D., Wu, X., Dong, D., Xu, M., and Tong, Z. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). Monatsh. (2018). Capturing low-pressure hydrogen using VTiCr catalyzed magnesium hydride. Quickly coating CuSCN solution onto a spinning perovskite film enables the formed n–i–p PSC to have a conformal CuSCN HTM. LZ, SS, and JX contributed conception and design of the study. Stable and high-efficiency methylammonium-free perovskite solar cells. (2009). (2019a). 14, 314–323. The addition of Ni@C decreased the onset temperature of MgH2 to 175°C. (2017). Stable hydrogen storage cycling in magnesium hydride, in the range of room temperature to 300 °C, achieved using a new bimetallic Cr-V nanoscale catalyst.