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The environmentally friendly polytetrafluoroethylene (PTFE) binder, known for its strong bonding, is ideal for high-loading electrode preparation in solvent-free dry processes. However, its use in graphite anodes is hindered by a tendency to undergo reduction at low potentials, causing substantial capacity loss. Herein, we identified an irreversible reductive of PTFE at ∼1.2 V vs. Li/Li+, involving partial substitution of F atoms with H in its carbon chain and subsequent LiF formation. Using this insight, we developed a polyethylene oxide coating to prevent electrical contact between graphite and PTFE binder, successfully inhibiting PTFE reduction. This coating facilitated the effective use of PTFE in high-loading lithium-ion battery (LIB) pouch cells (4.8 mAh/cm2LiNi0.75Mn0.25O2and 5.2 mAh/cm2graphite) via dry-process fabrication, achieving an energy density of 258.7 Wh/kg and reducing initial irreversible decompositions from 52.91% to 16.34%. The cost-effective PTFE, coupled with solvent-free, high-loading electrode fabrication, offers an economical and green approach to large-scale electrification.

Li2TB and FBP construct a unique dual-layer CEI adaptive to wide temperature on NCM surface, which maintains the high thermal stability of FBP-derived CEI and also preserves the low interfacial impedance of Li2TB-derived CEI.

Diluent TTE can improve the physiochemical properties of bulk electrolyte, regulate the interphasial films on both NMC622 and graphite, hence enabling graphite||NMC622 pouch cell with LHCE-2 to exhibit outstanding cycle, rate and discharge ability.

The nickel-rich cathode LiNi0.8Co0.1Mn0.1O2(NCM811) is deemed as a prospective material for high-voltage lithium-ion batteries (LIBs) owing to its merits of high discharge capacity and low cobalt content. However, the unsatisfactory cyclic stability and thermostability that originate from the unstable electrode/electrolyte interface restrict its commercial application. Herein, a novel electrolyte composed of a polyethylene (PE) supported poly(vinylidene fluoride-co-hexafluoropropylene) (P(VdF-HFP)) based gel polymer electrolyte (GPE) strengthened by a film-forming additive of 3-(trimethylsilyl)phenylboronic acid (TMSPB) is proposed. The porous structure and good oxidative stability of the P(VdF-HFP)/PE membrane help to expand the oxidative potential of GPE to 5.5 V compared with 5.1 V for the liquid electrolyte. The developed GPE also has better thermal stability, contributing to improving the safety performance of LIBs. Furthermore, the TMSPB additive constructs a low-impedance and stable cathode electrolyte interphase (CEI) on the NCM811 cathode surface, compensating for GPE’s drawbacks of sluggish kinetics. Consequently, the NCM811 cathode matched with 3% TMSPB-containing GPE exhibits remarkable cyclicity and rate capability, maintaining 94% of its initial capacity after 100 cycles at a high voltage range of 3.0–4.35 V and delivering a capacity of 133.5 mAh g–1under 15 C high current rate compared with 68% and 75.8 mAh g–1for the one with an additive-free liquid electrolyte. By virtue of the enhanced stability of the NCM811cathode, the cyclability of graphite||NCM811 full cell also increases from 48 to 81% after 100 cycles. The incorporation of P(VdF-HFP)-based GPE and TMSPB electrolyte additive points out a viable and convenient pathway to unlock the properties of high energy density and satisfactory safety for next-generation LIBs.

In this study, the effects of white light-emitting diode (LED) and UV-C radiation (with the same intensity) on stilbene biosynthesis and phytochemicals accumulation of peanut sprouts were investigated. Results showed that white light radiation promoted the growth of peanut sprouts while UV-C radiation had the opposite effect. Contents of total phenolics, total flavonoids, and phytochemicals significantly increased in peanut sprouts treated by white light or UV-C radiation. Besides, light radiation significantly induced stilbene accumulation by upregulating the expression of genes and enzymes in stilbene biosynthesis-related pathway, and UV-C was more effective to promote stilbene accumulation. Compared with piceid and piceatannol, resveratrol showed the highest accumulation in peanut sprouts treated by light radiation. In summary, white light or UV-C radiation could be used as a method to promote stilbene biosynthesis and phytochemicals accumulation in peanut sprouts and UV-C was more effective.