Fabrication of red phosphorus anode for fast-charging lithium-ion batteries based on TiN/TiP2-enhanced interfacial kinetics

被引：44

作者：

Han, Xinpeng ^{[1
]}

Zhang, Zixuan ^{[1
]}

Han, Muyao ^{[1
]}

Cui, Yuru ^{[1
]}

Sun, Jie ^{[1
]}

机构：

[1] Tianjin Univ, Sch Chem Engn & Technol, Minist Educ, Key Lab Green Chem Technol, Tianjin 300072, Peoples R China

来源：

ENERGY STORAGE MATERIALS | 2020年 / 26卷

关键词：

Red phosphorus; TiN; Interfacial-modification material; Fast-charging lithium ion battery; POROUS CARBON NANOFIBERS; PERFORMANCE; BLACK; COMPOSITE; DENSITY; STORAGE; CONSTRUCTION; NANOCRYSTALS; DIFFUSION; OXIDATION;

D O I：

10.1016/j.ensm.2019.12.044

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Red phosphorus (RP) is an ideal anode for fast-charging lithium-ion batteries due to its high capacity (2596 mA h g(-1)) and suitable lithiation potential (0.7 V vs. Li/Li+). We embedded amorphous soft RP nanoparticles in the hard and micro-sized TiN nanosheet as well as CNT via high-energy ball milling, thus, TiP2 layer was fabricated at the interface of RP and TiN. This in-situ formed conductive TiP2 substantive layer enhances Li+ diffusion, improves the interfacial stability of RP, and inhibits the side reaction between P and electrolytes. Thus the RP/TiN/CNT electrode shows excellent fast-charging and long-term cycling performances, such as, a high fast-charging retention of 92.6% from the 5th to 200th cycles with charging current density of 8 A g(-1) (= 3 C rate, about 3 min) and discharging current density of 0.15 A g(-1), and a 96.9% capacity retention from 3rd to 850th cycles at 2.3 A g(-1).

引用

页码：147 / 156

页数：10

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