Red phosphorus confined in MOF-derived N-doped carbon-based composite polyhedrons on carbon nanotubes for high-areal-capacity lithium storage

被引:31
|
作者
Wu, Kuan [1 ]
Xu, Gang [1 ]
Pan, Dengyu [2 ]
Wu, Minghong [1 ]
机构
[1] Shanghai Univ, Sch Environm & Chem Engn, 99 Shangda Rd, Shanghai 200444, Peoples R China
[2] Shanghai Univ, Sch Environm & Chem Engn, Dept Chem Engn, Shanghai 200444, Peoples R China
基金
中国国家自然科学基金;
关键词
Red phosphorus; Lithium-ion batteries; Flexible electrode; MOF-derived; Carbon nanotube; BLACK PHOSPHORUS; PERFORMANCE; ANODE; EFFICIENT; THIN;
D O I
10.1016/j.cej.2019.123456
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Combination of high-capacity and flexibility in electrode materials is crucial for flexible electronics. Recently, red phosphorus (P) has caused increasing focus as a hopeful storage material for lithium storage due to its super-high theoretical capacity and low cost. However, the low conductivity of red P and its large volume change during cycling process lead to reduced electrochemical activity. So far, no effective methods have been developed to construct flexible binder-free electrodes using red P as an active material for high-performance lithium-ion batteries (LIBs). Here, a novel hollow three-dimensional (3D) internet structure as a flexible high-areal-capacity electrode material was fabricated by confining red P nanoparticles into compact MOF-derived carbon-based composite polyhedrons/carbon nanotube internets. The electrode manifests an excellent lithium storage performance for LIBs with a high discharge capacity of 4.78 mAh cm(-2) (1920 mAh g(-1)) at 0.1 mA cm(-2) and a good capacity retention of 79.2% at 1 mA cm(-2) after 300 cycles (73% and 69% capacity retention at 5 and 10 mA cm(-2) after 500 cycles, respectively). The novel flexible anode materials can provide excellent Li+ storage performance for flexible electronics applications.
引用
收藏
页数:8
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