Front Cover Image

Abstract

Yan Yu and co‐workers (DOI: https://doi.org/10.1002/inf2.12176) design and develop the nitrogen‐doped porous carbon nanosheets as the multifunctional host of Se (Se@N‐HCNS). They demonstrate that this structure could absorb polyselenides and facilitate ions transport effectively. In this cover, the fishes preferring to live under the lotus mean the anchoring effect of the Se@N‐HCNS on polyselenides. The buffalo is attracted to the red lanterns, representing the great development potential of K‐Se batteries in the Year of the Ox.

3D Ordered Porous Hybrid of ZnSe/N‐doped Carbon with Anomalously High Na+ Mobility and Ultrathin Solid Electrolyte Interphase for Sodium‐Ion Batteries

“…[26] On the other hand, constructing 3DOHP structure (Figure 2d) combined with N-doped carbon is an effective strategy to improve electrochemical performance of electrode materials. [27,28] The hierarchical pores with thin wall are favorable to reducing the migration routes of ions and improving the rate performance of ZnSe. [29] Combined with the above theoretical calculation and experimental results, it is expected that the construction of 3DOHP combined with N-doped carbon, in addition with the optimization of electrolytes, are helpful to design ZnSe with excellent rate performance and great cycle stability for SIBs.…”

A substrate surface alloy strategy for integrated sulfide electrodes for sodium ion batteries with superior lifespan

“…Several issues appears during the trial period. Among these, facing the big issue of unsatisfied cycling lifespan, two dimensional transition metal dichalcogenides (TMDs), such as MoS 2 , [6,7] TiS 2 , [8,9] TaS 2 , [10] WS 2 , [11,12] MoSe 2 , [13,14] WSe 2 , [15,16] etc., are attracting much more attention and widely employed as active materials owing to their overwhelming advantages such as large interlayer spacing and high reversible conversion efficiency. The inherent semiconductor property, however, slow down the reaction kinetics resulting from the unsatisfactory electronic conductivity.…”

Artificial Heterogeneous Interphase Layer with Boosted Ion Affinity and Diffusion for Na/K‐Metal Batteries

“…[9][10][11][12][13] Among them, the sodiummetal or potassium-metal anode (NMA or PMA) has attracted the most attention owning to its high theoretical specific capacity (1165 mAh g -1 for NMA, and 687 mAh g -1 for PMA) and the low potential (−2.71 V vs SHE for Na, and −2.93 V vs SHE for K). [14][15][16][17][18][19][20][21] However, numerous challenges must be solved to realize the application of NMAs (PMAs). For example, i) the high electrochemical activity of the NMA (PMA) would induces the formation of an unstable solid electrolyte interface (SEI) layer between the electrode and electrolyte, which is easily broken during the repeated plating/stripping process, resulting in the capacity attenuation and low Coulombic efficiency (CE); ii) the huge volume expansion of Na (K) metal during the charging/ discharging cause the SEI to fracture; and iii) uncontrolled dendritic growth of Na (K) metal during cycling may cause membrane puncture, resulting in battery failure and potential safety hazards.…”