Graphitic Carbon Nitride Induced Micro‐Electric Field for Dendrite‐Free Lithium Metal Anodes

Abstract

Li-Se, [8] and that have extremely high energy densities. However, the nonuniform deposition of Li ions (Li + ) and the large volume change of the Li-metal anode during cycling result in the formation of numerous cracks in the solid-electrolyte interface (SEI) layers, [10][11][12] which accelerate the inhomogeneous deposition of Li and consume more electrolyte, [12,13] causing significant safety issues and low Coulombic efficiency (CE). [14][15][16] In order to solve these problems, tremendous efforts have been made to achieve uniform Li deposition or a steady SEI passivation layer by modifying the solid-state electrolyte, [3,[17][18][19] using lithiophilic hosts, [20][21][22][23][24] and adding electrolyte additives. [25][26][27] Another critical issue is the effect of current density on Li deposition behavior. [28,29] Compared with planar electrodes, a 3D current collector effectively reduces the local current density and delays Li dendrite growth rate due to a larger specific surface area. [30][31][32][33][34] However, there is a

Lithium‐Salt Mediated Synthesis of a Covalent Triazine Framework for Highly Stable Lithium Metal Batteries

“…TheN1 sp eak shifted from 398.9 eV to 399.5 eV upon Li plating,pointing to the strong N-Li interaction and thus,t ot he lithiophilicity of the CTF backbone. [22] Thes tructural stability of CTF was verified by FT-IR analysis after 50 cycles,which still showed ( Figure S17) the characteristic triazine peak of the AP-CTF-LiF electrode.…”

An Autotransferable g‐C3N4 Li+‐Modulating Layer toward Stable Lithium Anodes

“…Here, we develop a brand‐new autotransferable strategy to fabricate an interfacial layer for Li metal by employing graphene‐like carbon nitride (GCN, g‐C 3 N 4 ) ( Figure ). While writing this manuscript, we notice that there is one publication just coming out about using g‐C 3 N 4 as surface modification materials for Ni foam 3D host to adjust the microelectric field and guide Li deposition . In our work, the g‐C 3 N 4 is used in the form of an integrated film and functions as a continuous Li + ‐modulating layer at the electrode/electrolyte interface via the formation of LiN bonds.…”

Batteries Safety: Recent Progress and Current Challenges

“…Reproduced with permission from Kong et al (2018b). 2019), foam-like current collectors (Mukanova et al, 2017(Mukanova et al, , 2018Lu et al, 2019), porous reduced graphene oxide/poly(acrylic acid) (rGO-PAA) aerogels based current collectors (Pender et al, 2019). These approaches revolve around the idea of changing the planar architecture of conventional current collectors to confine dendritic growth or redirect it away from the separator.…”