LiF/LiN-Rich Electrode-Electrolyte Interfaces Enabled by Multi-Functional Electrolyte Additive to Achieve High-Performance Li/LiNiCoMnO Batteries.

LiPF-based carbonate electrolytes have been extensively employed in commercial Li-ion batteries, but they face numerous interfacial stability challenges while applicating in high-energy-density lithium-metal batteries (LMBs). Herein, this work proposes N-succinimidyl trifluoroacetate (NST) as a multifunctional electrolyte additive to address these challenges. NST additive could optimize Li solvation structure and eliminate HF/HO in the electrolyte, and preferentially be decomposed on the Ni-rich cathode (LiNiCoMnO, NCM811) to generate LiF/LiN-rich cathode-electrolyte interphase (CEI) with high conductivity.

LiF-Rich Electrode-Electrolyte Interfaces Enabled by Bifunctional Electrolyte Additive to Achieve High-Performance Li/LiNiCoMnO Batteries.

Commercial Li-ion batteries use LiPF-based carbonate electrolytes extensively, but there are many challenges associated with them, like dendritic Li growth and electrolyte decomposition, while supporting the aggressive chemical and electrochemical reactivity of lithium metal batteries (LMBs). This work proposes 1,1,1,3,3,3-hexafluoroisopropyl methacrylate (HFM) as a multifunctional electrolyte additive, constructing protective solid-/cathode-electrolyte interphases (SEI/CEI) on the surfaces for both lithium metal anode (LMA) and Ni-rich cathode to solve these challenges simultaneously. The highly fluorinated group (-CF) of the HFM molecule contributes to the construction of SEI/CEI films rich in LiF that offer excellent electronic insulation, high mechanical strength, and surface energy.

Poly-1,3-dioxolane anchoring graphitic carbon nitride to achieve high-energy-density solid-state Li metal batteries.

Solid-state Li metal batteries (SSLMBs) are promising solutions for the next-generation energy storage devices with high energy densities and safety. Accordingly, the advanced solid-state electrolytes are further needed to address the challenges-low ionic conductivity, poor interfacial compatibility and uncontrollably Li dendrites, boosting the electrochemical and safety performances of SSLMBs. Herein, a "flexible and rigid" strategy is proposed to enhance the electrochemical and mechanical properties of polyethylene oxide (PEO)-based electrolytes.

Halloysite nanotubes modified poly(vinylidenefluoride-co-hexafluoropropylene)-based polymer-in-salt electrolyte to achieve high-performance Li metal batteries.

Solid-state Li metal batteries (SSLMBs) are one of the most promising energy storage devices, as they offer high energy density and improved safety compared to conventional Li-ion batteries. However, the large-scale application of SSLMBs at room temperature is restricted by the main challenges such as low ionic conductivity and poor cyclic performance. Herein, a composed polymer-in-salt electrolyte (CPISE) is fabricated, which is composed of polyvinylidene vinylidene hexafluoropropene (PVDF-HFP) and high-concentration Li bis(trifluoromethanesulphonyl)imide (LiTFSI), reinforced with natural halloysite nanotubes (HNTs).

High-performance Li/LiNiCoMnO batteries enabled by optimizing carbonate-based electrolyte and electrode interphases via triallylamine additive.

Lithium (Li) metal batteries (LMBs), paired with high-energy-density cathode materials, are promising to meet the ever-increasing demand for electric energy storage. Unfortunately, the inferior electrode-electrolyte interfaces and hydrogen fluoride (HF) corrosion in the state-of-art carbonate-based electrolytes lead to dendritic Li growth and unsatisfactory cyclability of LMBs. Herein, a multifunctional electrolyte additive triallylamine (TAA) is proposed to circumvent those issues.

LiF-Rich Interfaces and HF Elimination Achieved by a Multifunctional Additive Enable High-Performance Li/LiNiCoMnO Batteries.

Li-metal batteries (LMBs), especially in combination with high-energy-density Ni-rich materials, exhibit great potential for next-generation rechargeable Li batteries. Nevertheless, poor cathode-/anode-electrolyte interfaces (CEI/SEI) and hydrofluoric acid (HF) attack pose a threat to the electrochemical and safety performances of LMBs due to aggressive chemical and electrochemical reactivities of high-Ni materials, metallic Li, and carbonate-based electrolytes with the LiPF salt. Herein, the carbonate electrolyte based on LiPF is formulated by a multifunctional electrolyte additive pentafluorophenyl trifluoroacetate (PFTF) to adapt the Li/LiNiCoMnO (NCM811) battery.

Zeolitic imidazolate framework upgrading polyethylene oxide composite electrolyte for high-energy solid-state lithium batteries.

The energy density of solid-state lithium batteries (SSLBs) has been primarily limited by the low ionic conductivity of solid electrolyte and poor interface compatibility between electrolyte and electrodes. Herein, a multifunctional composite solid polymer electrolyte (CSPE) based on polyethylene oxide (PEO) embedded with zeolitic imidazolate framework-8 deposited on carboxymethyl cellulose (ZIF@CMC) is reported. The ZIF@CMC interpenetrated in PEO matrix creates a continuous Li conductive network by combining Zn in ZIF with the unsaturated group in PEO to boost the Li transport through the PEO chain segment.

Multifunctional Electrolyte Additive for Bi-electrode Interphase Regulation and Electrolyte Stabilization in Li/LiNiCoMnO Batteries.

Rechargeable lithium metal batteries (LMBs) with high energy densities can be achieved by coupling a lithium metal anode (LMA) and a LiNiCoMnO (NCM811) cathode. Nevertheless, Li dendrite growth on the LMA surface and structural collapse of the NCM811 material, closely tied with the fragile cathode-/solid-electrolyte interphases (CEI/SEI) and corrosive hydrogen fluoride (HF), seriously deteriorate their performances. Herein, trimethylsilyl trifluoroacetate (TMSTFA) as a multifunctional electrolyte additive is proposed for regulation of the CEI/SEI films and elimination of HF.

Benzoic Anhydride as a Bifunctional Electrolyte Additive for Hydrogen Fluoride Capture and Robust Film Construction over High-Voltage Li-Ion Batteries.

High-voltage LiNi Co Mn O (NCM811)-based Li-ion batteries (LIBs) with enhanced performance can be achieved by properly tailoring the electrolyte systems. Benzoic anhydride (BA) was proposed here as a promising bifunctional electrolyte additive that can not only construct a robust cathode-electrolyte interface (CEI) film on the electrode surface but also capture HF/H O in the electrolyte effectively. Compared to the cell without the BA additive, the capacity of Li/NCM811 half-cell with 1.