Highly reinforce the interface stability using 2-Phenyl-1H-imidazole-1-sulfonate electrolyte additive to enhance the high temperature performance of LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)/graphite batteries

This work develops 2-Phenyl-1H-imidazole-1-sulfonate(PHIS)as a multi-functional electrolyte additive for H2O/HF scavenging and film formation to improve the high temperature performance of LiNi_(0.8)Co_(0.1)Mn_(0.1)O_(2)/graphite batteries.After 450 cycles at room temperature(25℃),the discharge capacity retentions of batteries with blank and PHIS-containing electrolyte are 56.03%and 94.92%respectively.After 230 cycles at high temperatures(45℃),their values are 75.30%and 88.38%respectively.The enhanced electrochemical performance of the batteries with PHIS-containing electrolyte is supported by the spectroscopic characterization and theoretical calculations.It is demonstrated that this PHIS electrolyte additive can facilitate the construction of the electrode interface films,remove the H2O/HF in the electrolyte,and improve the electrochemical performance of the batteries.This work not only develops a sulfonate-based electrolyte but also can stimulate new ideas of functional additives to improve the battery performance.

物理化学课程思政教学设计与实践

推进专业课程与思政教育融合是落实高校立德树人的根本。物理化学作为化学类核心专业基础课程,对学生的培养起着至关重要的作用。依据课程思政内涵,结合物理化学课程教学目标,从学科发展史、科学家简介、经典理论和方法、学科交叉、科学发展前沿以及物理化学在生产生活中的应用等6个方面挖掘梳理课程蕴含的思政教育要点,并进行相应的教学设计。同时给出了课程思政教学实践模式和评价方法。