α-MnO2 nanorods supported on porous graphitic carbon nitride as efficient electrocatalysts for lithium-air batteries

被引：73
|
作者：
Hang, Yang [1 ]
Zhang, Chaofeng [1 ]
Luo, Xiaoman [1 ]
Xie, Yingshen [1 ]
Xin, Sen [2 ]
Li, Yutao [2 ]
Zhang, Dawei [1 ]
Goodenough, John B. [2 ]
机构：
[1] Hefei Univ Technol, Sch Chem & Chem Engn, Hefei 230009, Anhui, Peoples R China
[2] Univ Texas Austin, Dept Mech Engn, Austin, TX 78712 USA
来源：
JOURNAL OF POWER SOURCES | 2018年 / 392卷
基金：
中国国家自然科学基金;
关键词：
alpha-MnO2; g-C3N4; ORR; OER; Li-air batteries; OXYGEN REDUCTION REACTION; RECHARGEABLE LI-O-2 BATTERIES; ALKALINE HYDROTHERMAL TREATMENT; ELECTROCHEMICAL PERFORMANCE; PHOTOCATALYTIC PERFORMANCE; MNO2; NANOSTRUCTURES; GRAPHENE NANOSHEETS; ELECTRODE MATERIALS; IN-SITU; G-C3N4;
D O I：
10.1016/j.jpowsour.2018.04.078
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：
Synthesis of alpha-MnO2 nanorods grown on porous graphitic carbon nitride (g-C3N4) sheets via a facile hydro thermal treatment gives a porous composite exhibiting higher activity for an air cathode than the individual component of alpha-MnO2 or porous g-C3N4 for both the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). The porous g-C3N4/alpha-MnO2 composite also exhibits better performance in a Li-air battery than pure alpha-MnO2 or XC-72 carbon catalysts, which includes superior discharge capacity, low voltage gap and high cycle stability. The alpha-MnO2 nanorods catalyze the OER and the porous g-C3N4 sheets catalyze the ORR.
引用
收藏
页码：15 / 22
页数：8
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