材料科学
阴极
枝晶(数学)
金属
化学工程
同种类的
金属锂
密度泛函理论
电化学
锂(药物)
阳极
成核
电极
冶金
物理化学
热力学
工程类
内分泌学
计算化学
物理
化学
医学
数学
几何学
作者
Zhigao Chen,Weimin Chen,Hongxia Wang,Cheng Zhang,Xiaoqun Qi,Long Qie,Fengshou Wu,Liang Wang,Faquan Yu
出处
期刊:Nano Energy
[Elsevier]
日期:2021-12-14
卷期号:93: 106836-106836
被引量:40
标识
DOI:10.1016/j.nanoen.2021.106836
摘要
The safety hazards and short lifecycles caused by uncontrollable dendrite growth and infinite volume expansion hamper the widespread deployment of Li metal anodes. To address these issues, it is critical to regulate the nucleation and electrodeposition behaviors of Li. Herein, tetraaminophthalocyanine (TAPC) as lithiophilic anchor points modified on three-dimensional (3D) carbon skeleton (denoted as [email protected]) as both current collector and host material, is rationally designed for stabilizing Li metal anodes. Li3N spontaneously generated from the reaction between TAPC and Li enables upgraded electrochemical kinetics. Moreover, density functional theory (DFT) results reveal that the evenly distributed TAPC nanoparticles can effectively guide the homogeneous smooth deposition of metallic Li via strong affinity between Li and conjugation groups. Symmetrical cells containing [email protected] anodes afford a stable cycling for 3500 h at 10 mA cm−2. Further, coupled with a high-loading LiFePO4 cathode (15.0 mg cm−2), the stability and feasibility of the modified electrode in practical cells are proved.
科研通智能强力驱动
Strongly Powered by AbleSci AI