Construction of double-shell Ni3Se4@Co3Se4 microsphere for hybrid Zn-based supercapacitor with superior rate and energy density

Ambient Synthesis of Metal–Organic Framework-Derived Bimetallic Layered Double Hydroxide Nanosheets by the Composition Inheritance Strategy for Efficient Microwave Attenuation Applications

“…Ni 2p (Figure e) is split into six peaks, the binding energy of 853.32, 855.08, 870.77, and 872.57 eV belong to Ni 2+ 2p 3/2 , Ni 3+ 2p 3/2 , Ni 2+ 2p 1/2 , and Ni 3+ 2p 1/2 , respectively, and the two additional shake-up satellites located at binding energy of 860.44 and 878.77 eV, indicating the coexistence of Ni 2+ and Ni 3+ in the calcined products. Similarly, Co 2p (Figure f) can also be split into six peaks, the binding energy of 779.98, 778.31, 795.51, and 793.78 belong to Co 2+ 2p 3/2 , Co 3+ 2p 3/2 , Co 2+ 2p 1/2 , and Co 3+ 2p 1/2 , respectively, and two shake-up satellites at binding energy of 785.86 and 802.91. , The C 1s and Ni 2p spectra of Zn, Ni-LMc exhibit similar splitting peaks as those of Co, Ni-LMc, and the C1s spectra at the binding energies of 284.34 and 288.02 eV also constitute the graphite and CO groups (Figure S5b). As shown in Figure g, the Ni 2p relates four peaks of Zn, Ni-LMc at binding energies of 853.53 and 870.95 eV, which are assigned to Ni 2+ , while the peaks representing Ni 3+ are located at 855.40 and 872.64 eV, and the two additional shake-up satellites present at binding energies of 860.54 and 878.83 eV.…”

In Situ Growth Strategy to Construct “Four‐In‐One” Separators with Functionalized Polyphosphazene Coatings for Safe and Stable Lithium–Sulfur Batteries

“…Upon the incorporation of CNTs coating, the 𝜎 of the separator decreases to 0.844 mS cm −1 , indicating that the presence of CNTs particles obstructs the passage of Li + through the separator. [42,43] Conversely, for the mixed HCTB and CNTs (MC-HCTB) modified separator and InC-HCTB modified separator, the 𝜎 value increases to 1.302 and 1.433 mS cm −1 , respectively. The enhancement can be attributed to the abundant polar functional groups (such as phosphonitrile groups, ether groups, hydroxyl groups, bromo groups, and so on) present in HCTB, which facilitates the transport of Li + .…”

Ni3S2/Co3S4 with controlled surface electron arrangement for high-performance aqueous energy storage

“…[6][7][8] Furthermore, nickel-zinc (Ni-Zn) batteries have attracted research attention, which is attributed to their high voltage window, large specic capacity, high safety, and rich reserves, 9,10 making it a competitive alternative for future energy storage devices. [11][12][13] However, the unmatched electrochemical performance of cathode materials has hindered the further development of supercapacitors and Ni-Zn batteries.…”