N-doped carbon coated Ti3C2 MXene as a high-efficiency catalyst for improving hydrogen storage kinetics and stability of NaAlH4

Dual Confinement of Si Nanoparticles in a MXene/ZIF-8-Derived Carbon Framework for Lithium-Ion Batteries

“…The high-resolution C 1s spectrum of Si/MXene@C further confirms the interfacial chemical bonding between Si and the carbon layer due to the appearance of the Si–C bond at 284.1 eV. Moreover, the Si/MXene@C shows characteristic peaks at 281.5, 284.8, 286.3, and 288.7 eV, which could be ascribed to the Ti–C, C–C, C–O, and O–CO bonds, respectively (Figure e). , Compared with Si/MXene (Figure S8), Si/MXene@C shows a weaker Ti–C bond due to the carbon coating structure. , The high-resolution Ti 2p spectrum of Si/MXene@C depicts three couples of Ti 2p 1/2 –Ti 2p 3/2 peaks at 454.7/459.3, 455.7/460.6, and 457.2/461.9 eV (Figure f), which could be assigned to the Ti–C, Ti 2+ , and Ti–O bonds, respectively . The detected Ti–C bonds confirmed the presence of MXene in Si/MXene@C.…”

“…34,41 Compared with Si/MXene (Figure S8), Si/ MXene@C shows a weaker Ti−C bond due to the carbon coating structure. 44,45 The high-resolution Ti 2p spectrum of Si/MXene@C depicts three couples of Ti 2p 1/2 −Ti 2p 3/2 peaks at 454.7/459.3, 455.7/460.6, and 457.2/461.9 eV (Figure 3f), which could be assigned to the Ti−C, Ti 2+ , and Ti−O bonds, respectively. 46 The detected Ti−C bonds confirmed the presence of MXene in Si/MXene@C.…”

Two‐Dimensional MXenes for Energy Storage: Computational and Experimental Approaches

“…Ti 3 C 2 /NC significantly enhances the dehydriding efficiency and cycle stability in NaAlH 4 . Reported capacity retention rate up to 96.3 % and a hydrogen capacity of 4.66 wt.% are also achieved after 15 cycles [195] …”

“…Reported capacity retention rate up to 96.3 % and a hydrogen capacity of 4.66 wt.% are also achieved after 15 cycles. [195]…”

Unraveling the degradation mechanism for the hydrogen storage property of Fe nanocatalyst-modified MgH2

“…4 As solid-state hydrogen storage materials such as light metal hydrides 5,6 and composite hydrides [7][8][9][10] have high hydrogen density and excellent safety, great efforts have been exerted on promoting their commercialization. [11][12][13][14] Among several researched materials, MgH 2 , with its high capacity of 7.6 wt% H 2 , low cost, and environmental friendliness, shows great promise for practical hydrogen storage. 15,16 Nonetheless, MgH 2 has a high enthalpy and a low hydrogen diffusion coefficient, resulting in a high operating temperature and slow kinetics.…”