A bean sprout-like cobalt selenium phosphorus nanosheet-composed anode toward fast and high sodium-ion storage

被引:13
作者
Zhang, Heng [1 ]
Bai, Youcun [1 ]
Liu, Jiawang [1 ]
Li, Juan [1 ,4 ]
Zou, Zhuo [1 ]
Song, Wenliang [2 ]
Sun, Wei [3 ]
Li, Chang Ming [1 ]
机构
[1] Suzhou Univ Sci & Technol, Inst Mat Sci & Devices, Sch Mat Sci & Engn, Suzhou 215011, Peoples R China
[2] Univ Shanghai Sci & Technol, Sch Mat & Chem, Shanghai 200093, Peoples R China
[3] Hainan Normal Univ, Coll Chem & Chem Engn, Haikou 571158, Peoples R China
[4] Southwest Univ, Inst Clean Energy & Adv Mat, Fac Mat & Energy, Chongqing 400715, Peoples R China
关键词
DOPED CARBON; PERFORMANCE; COSE2;
D O I
10.1039/d3cc00968h
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
A metal-organic framework (MOF) is used to thermally grow cobalt selenophosphide (CoSeP) nanoparticles on an N-doped 2-dimensional carbon matrix (CoSeP@N-C), resulting in an assembled unique 3-dimensional bean sprout-like nanosheet composite with massive defects as an advanced anode material of sodium ion batteries. The results indicate that the massive defects in the CoSeP@N-C sprout-like 3-D structure can offer high density of reaction sites and well accommodate the volume change during the sodiation/desodiation process, while rendering abundant channels for rapid transport of sodium ions, thereby synergistically making the CoSeP@N-C anode much more reversible for the sodium ion storage process and producing higher rate performance than those of CoP2 and CoSe2@N-C. The ex situ X-ray diffraction, ex situ Raman and ex situ TEM analyses further confirm the mechanism of sodium storage intercalation and transformation in CoSeP@N-C. This work vividly demonstrates a rational design of metal selenophosphide anodes as an effective strategy to accomplish fast and high sodium-ion storage.
引用
收藏
页码:4794 / 4797
页数:4
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