A MOF-derived hollow Co₃O₄/NiCo₂O₄nanohybrid: a novel anode for aqueous lithium ion batteries with high energy density and a wide electrochemical window

Abstract

compared to traditional LIBs. However, crucial shortcomings would impede their practical applications. Narrow electrochemical window restricts the capacity of aqueous LIB so that ultrahigh concentration electrolyte lithium bistrifluoromethosulfonimide (LiTFSI) is...

W7Nb4O31 Nanorods with a Mixed Crystal Structure: A Very Fast‐ and Stable‐Charging Anode Material for Aqueous Lithium‐Ion Batteries

“…When the current rate further increases to 5C and 50C, the capacity retentions remain 66.7 and 72.0%, respectively (Figure 3e,f). The rate capability and cyclic stability of our LiMn 2 O 4 //W 7 Nb 4 O 31 full cell are further compared with those of previously-reported full cells in ALIBs (Figure 2g,h; Table S5, Supporting Infor-mation), including LiMn 2 O 4 //Nb 18 W 16 O 93 , [6] LiMn 2 O 4 //5%C-Mo 6 S 8 , [13] LiMn 2 O 4 //nanoscale-Mo 6 S 8 , [14] LiMn 2 O 4 //p-TiO 2 , [15] LiMn 2 O 4 // FePO 4 •2H 2 O, [16] LiMn 2 O 4 //Nb 16 W 5 O 55 , [8] LiMn 2 O 4 //Mo 6 S 8 , [13] LiFePO 4 //Mo 6 S 8 , [17] LiMn 2 O 4 //Co 3 O 4 /NiCo 2 O 4 , [18] LiMn 2 O 4 //TiS 2 , [19] LiMn 2 O 4 //TiO 2 @LiTi 2 (PO 4 ) 3 , [15] LiNi 1/3 Co 1/3 Mn 1/3 O 2 //LiV 3 O 8 , [20] and LiMn 2 O 4 //FePO 4 . [16] Clearly, our LiMn 2 O 4 //W 7 Nb 4 O 31 full cell is the only one with both fast-charging and stable-charging characteristics.…”

Porous NiMoO4 Nanosheet Films and a Device with Ultralarge Optical Modulation for Electrochromic Energy-Storage Applications

“…Therefore, it is highly desirable to exploit large-optical modulation EC materials for the development of colorless-to-neutral coloration EC smart windows. Bimetallic oxides, such as NiCoO 2 , NiCo 2 O 4 , ZnCo 2 O 4 , MnCo 2 O 4 , CuCo 2 O 4 , CoMoO 4 , MnMoO 4 , and NiMoO 4 , have been widely studied as energy-storage materials due to their excellent electrochemical properties and good electrical conductivity. − Recently, bimetallic oxides have also been reported for EC applications. Lei et al fabricated porous NiCoO 2 nanowire films on FTO glasses by a simple hydrothermal method.…”