Stable cycling and uniform lithium deposition in anode-free lithium-metal batteries enabled by a high-concentration dual-salt electrolyte with high LiNO3 content

A LiPF6-LiFSI Blended-Salt Electrolyte System for Improved Electrochemical Performance of Anode-Free Batteries

“…S3a~f), whereas a homogeneous and silverish Li deposition was observed when LiNO 3 was added (Fig. S3g), which was attributed to the LiNO 3 ability altering the deposited Li shape from dendritic to spherical [39].…”

“…7). As mentioned above, LiNO 3 is widely applied as an effective additive in ether-based electrolytes to increase the interfacial stability of Li-metal anode but it shows poor solubility in carbonate-based electrolyte [3,39]. Thus, in order to improve the LiNO 3 solubility, we mixed a trace amount of TEP in the carbonate electrolyte, and dissolved the LiNO 3 in the carbonate and ester mixed solvent.…”

Highly Reversible Cycling of Zn‐MnO2 Batteries Integrated with Acid‐Treated Carbon Supportive Layer

“…While there was no evident morphological change in the SEM and transmission electron microscopy (TEM) images after acid treatment (Figure 2b,c), the X-ray photoelectron spectroscopy (XPS) survey spectra showed that oxygen and nitrogen-containing functional groups were newly formed on the SP carbon (Figure 2d). High-resolution elemental XPS (C 1s and O 1s) and Fourier transform infrared (FT-IR) spectra (Figures S6 and S7, Supporting Information) also revealed that the specific deconvolution peaks are assigned to CO, CO, CH, COH, and NO 2 bonds, [26][27][28][29][30][31] which suggests that the major functional groups are attributed to carboxylic acid (COOH) and nitric acid (NO 3 ). Such acidic pendant groups at the SP carbon can enhance the hydrophilicity, leading to excellent dispersion in the aqueous electrolyte (Figure 2e).…”

Ternary-salt gel polymer electrolyte for anode-free lithium metal batteries with an untreated Cu substrate

“…In the aforementioned AFLMBs, the cathode provides all the active Li + for plating on an untreated Cu substrate (no excess Li is present in the cell). [14][15][16] The absence of an anodic Li + host and the lack of Cu treatment result in lower cell weight, less space, and lower fabrication cost; thus, these batteries provide a higher energy density than do conventional lithium-ion batteries. [15][16][17] However, limited research has been conducted on AFLMBs because of the low cycling efficiency of Li on the untreated Cu substrate, which is caused by the formation of an erratic SEI and dead Li.…”