Metal-Free Bifunctional Ordered Mesoporous Carbon for Reversible Zn-CO2 Batteries

被引：91

作者：

Gao, Sanshuang ^{[1
]}

Liu, Yifan ^{[2
]}

Xie, Zhongyuan ^{[1
]}

Qiu, Yuan ^{[1
]}

Zhuo, Longchao ^{[3
]}

Qin, Yongji ^{[1
]}

Ren, Junqiang ^{[4
]}

Zhang, Shusheng ^{[5
]}

Hu, Guangzhi ^{[6
]}

Luo, Jun ^{[1
]}

Liu, Xijun ^{[1
,7
]}

机构：

[1] Tianjin Univ Technol, Sch Mat Sci & Engn, Tianjin Key Lab Photoelect Mat & Devices, Inst New Energy Mat & Low Carbon Technol, Tianjin 300384, Peoples R China

[2] Shenzhen Univ, Minist Educ & Guangdong Prov, Key Lab Optoelect Devices & Syst, Shenzhen 518060, Peoples R China

[3] Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Peoples R China

[4] Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China

[5] Zhengzhou Univ, Coll Chem, Zhengzhou 450000, Peoples R China

[6] Yunnan Univ, Sch Ecol & Environm Sci, Inst Ecol Res & Pollut Control Plateau Lakes, Kunming 650504, Yunnan, Peoples R China

[7] Civil Aviat Univ China, Key Lab Civil Aviat Thermal Hazards Prevent & Eme, Tianjin 300300, Peoples R China

来源：

SMALL METHODS | 2021年 / 5卷 / 04期

基金：

中国国家自然科学基金;

关键词：

bifunctional catalysts; carbon dioxide reduction; metal-free catalysts; nitrogen-doped ordered mesoporous carbon; Zn-CO2; batteries; OXYGEN REDUCTION; ELECTROCATALYST; SITES; CO2RR;

D O I：

10.1002/smtd.202001039

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：

The fabrication of Zn-CO2 batteries is a promising technique for CO2 fixation and energy storage. Herein, nitrogen-doped ordered mesoporous carbon (NOMC) is adopted as a bifunctional metal-free electrocatalyst for CO2 reduction and oxygen evolution reaction in the near-neutral electrolyte. The ordered mesoporous structures and abundant N-dopings of NOMC facilitate the accessibility and utilization of the active sites, which endow NOMC with excellent electrocatalysis performance and outstanding stability. Especially, a nearly 100% CO Faradaic efficiency is achieved at an ultralow overpotential of 360 mV for CO2 reduction. When constructed as an aqueous rechargeable Zn-CO2 battery using NOMC as the cathode, it yields a high peak power density of 0.71 mW cm(-2), a good cyclability of 300 cycles, and excellent energy efficiency of 52.8% at 1.0 mA cm(-2).

引用

页数：6

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