Mechanistic understanding of the charge storage processes in FeF_(2) aggregates assembled with cylindrical nanoparticles as a cathode material for lithium-ion batteries by in situ magnetometry

Transition metal fluorides(TMFs)cathode materials have shown extraordinary promises for electrochemical energy storage,but the understanding of their electrochemical reaction mechanisms is still a matter of debate due to the complicated and continuous changing in the battery internal environment.Here,we design a novel iron fluoride(FeF_(2))aggregate assembled with cylindrical nanoparticles as cathode material to build FeF_(2) lithium-ion batteries(LIBs)and employ advanced in situ magnetometry to detect their intrinsic electronic structure during cycling in real time.The results show that FeF_(2) cannot be involved in complete conversion reactions when the FeF_(2) LIBs operate between the conventional voltage range of 1.0–4.0 V,and that the corresponding conversion ratio of FeF_(2) can be further estimated.Importantly,we first demonstrate that the spin-polarized surface capacitance exists in the FeF_(2) cathode by monitoring the magnetic responses over various voltage ranges.The research presents an original and insightful method to examine the conversion mechanism of TMFs and significantly provides an important reference for the future artificial design of energy systems based on spinpolarized surface capacitance.

Clinical Study on the Effect of Jiaotai Acupuncture Combined with Escitalopram on Mild Depression and Its Influence on Inflammatory Factors

[Objectives] To analyze the effect of Jiaotai acupuncture combined with Escitalopram on mild depression and its influence on inflammatory factors.[Methods] Eighty patients with mild depression admitted to Shenzhen Baoan District Central Hospital from March 2021 to March 2023 were randomly divided into observation group (40 cases) and control group (40 cases). The control group was treated with Escitalopram, and the observation group was treated with Jiaotai acupuncture on the basis of the control group. The overall efficacy, depression score before and after treatment, and the improvement of inflammation level were compared between the two groups.[Results] The total effective rate of the observation group was significantly higher than that of the control group ( P <0.05), and the improvement of depression score and inflammation level of the observation group was significantly better than that of the control group ( P <0.05).[Conclusions] Jiaotai acupuncture combined with Escitalopram can significantly reduce inflammation and improve symptoms in patients with mild depression.