Formation of uniform porous yolk-shell MnCo2O4 microrugby balls with enhanced electrochemical performance for lithium storage and the oxygen evolution reaction

被引：19
作者：
Li, Jia [1 ]
Zhang, Yongxing [1 ]
Li, Li [1 ]
Wang, Yanming [1 ]
Zhang, Lei [1 ]
Zhang, Baojie [1 ]
Wang, Fei [1 ]
Li, Bing [1 ]
Yu, Xin-Yao [2 ,3 ,4 ]
机构：
[1] Huaibei Normal Univ, Minist Educ, Key Lab Green & Precise Synthet Chem & Applicat, Huaibei 235000, Peoples R China
[2] Anhui Univ, Inst Phys Sci, Hefei 230601, Anhui, Peoples R China
[3] Anhui Univ, Inst Informat Technol, Hefei 230601, Anhui, Peoples R China
[4] Zhejiang Univ, Sch Mat Sci & Engn, Hangzhou 310027, Zhejiang, Peoples R China
来源：
DALTON TRANSACTIONS | 2019年 / 48卷 / 45期
关键词：
MESOPOROUS MNCO2O4; FACILE SYNTHESIS; ION BATTERIES; METAL OXIDE; MICROSPHERES; ANODES; MICROSTRUCTURES; FABRICATION; NANOFLAKES; NANOFIBERS;
D O I：
10.1039/c9dt03609a
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Mixed transition metal oxides with favorable electrochemical properties are promising electrode materials in energy storage and conversion systems. In this work, uniform porous yolk-shell MnCo2O4 (denoted as YSM-MCO) microrugby balls have been synthesized by simple annealing treatment of metal carbonates with a microrugby ball shape in air. Benefiting from the desired porous structure and composition, the as-synthesized YSM-MCO exhibits enhanced electrochemical performance when investigated as anode materials for lithium-ion batteries and electrocatalysts for the oxygen evolution reaction. The YSM-MCO demonstrates remarkable lithium storage properties with a good cycling stability (94% capacity retention over 200 cycles at 0.5 A g(-1)) and superior rate capability (414 mA h g(-1) at 5 A g(-1)). In addition, the YSM-MCO also exhibits better OER activity than most of the reported MnCo2O4-based electrocatalysts.
引用
收藏
页码：17022 / 17028
页数：7
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