Metal Ti quantum chain-inlaid 2D NaSn2(PO4)3/H-doped hard carbon hybrid electrodes with ultrahigh energy storage density

Abstract

Metal Ti quantum chain-inlaid 2D NaSn 2 (PO 4 ) 3 /H-doped hard carbon hybrid electrodes with ultrahigh energy storage density, Chemical

A novel hierarchical book-like structured sodium manganite for high-stable sodium-ion batteries

“…S2b† shows the relationship between Z ′ and ω −0.5 of these two electrodes, displaying a linear characteristic for every curve. 39 The R ct of P2-Na 0.7 MnO 2.05 electrode before the charge–discharge tests is 341 Ω, while the R ct of this electrode is 722, 609, 446, and 399 Ω after the 1st, 3rd, 10th and 20th cycle, respectively. An increase in the charge-transfer resistance would indicate capacity fading during the beginning of the cycle, due to the activation of electrode and the formation of a stable surface film, with further cycling, the resistance gradually drops and stabilizes at 399 Ω, suggesting a gradual stabilization of the cycling, which agrees well with the cycling test results.…”

Critical Review of Emerging Pre‐metallization Technologies for Rechargeable Metal‐Ion Batteries

“…Compared with dry physical contact pre‐lithiation, the wet physical contact pre‐lithiation, achieved by adding a certain amount of electrolyte between Li foil and the anode, can yield better performance because of the formation of an SEI layer (Figure 3b). [ 23,36,78–89 ] Cui et al. successfully realized and optimized the pre‐lithiation of silicon nanowires by controlling the contact time, which significantly improves the battery performance.…”

“…Compared with dry physical contact pre-lithiation, the wet physical contact pre-lithiation, achieved by adding a certain amount of electrolyte between Li foil and the anode, can yield better performance because of the formation of an SEI layer (Figure 3b). [23,36,[78][79][80][81][82][83][84][85][86][87][88][89] Cui et al successfully realized and optimized the pre-lithiation of silicon nanowires by controlling the contact time, which significantly improves the battery performance. [36] In addition to the LIBs, Chung et al presodiumized the cathode and anode of SIBs by wet physical contact method, and the ICE and cycle stability and reversible capacity have all been improved (Figure 3c).…”

“…[19] In addition, the resultant pre-volume expansion caused by pre-metallization can improve the stability of electrodes in the silicon-and tin-based anodes, which effectively suppressed the cracking and pulverization of electrodes. [20][21][22][23][24] Furthermore, the rate capability is boosted because of the smaller impedance caused by thinner SEI layer in premetallized electrodes. [25][26][27][28][29] On the other hand, the reduction of elastic and shear moduli, along with an increase in the Li + diffusion coefficient in the Si-based anode can also improve the cycle and rate performance.…”

Nanoporous Cathode Material for High-Energy-Density Sodium-Ion Batteries

“…In response to the increasing demand for energy storage devices, sodium-ion batteries (SIBs) have been developed, which have the advantages of low cost and abundance of resources. − High energy density, high rate performance, and cycling stability of secondary battery is now a huge challenge for SIB cathode materials. , Researchers have focused their attention on sodium storage cathode materials which include polyanionic, , layered transition metal oxide, − and Prussian blue. − It has been found in many studies that, despite their high energy density, layered transition metal oxides undergo irreversible phase changes during repeated extracting/inserting of Na + , which makes it difficult to obtain long cycle performance . For Prussian blue-like compounds to be synthesized, crystal water and an abundance of Fe­(CN) 6 vacancies are unavoidable, and these factors affect the diffusion of Na + within the crystal lattice .…”