Unveiling Trifunctional Active Sites of a Heteronanosheet Electrocatalyst for Integrated Cascade Battery/Electrolyzer Systems

被引：63

作者：

Han, Xiaotong ^{[1
,2
]}

Li, Nannan ^{[3
]}

Kang, Ying Bo ^{[1
,2
]}

Dou, Qingyun ^{[1
,2
]}

Xiong, Peixun ^{[1
,2
]}

Liu, Qing ^{[1
,2
]}

Lee, Jin Yong ^{[3
]}

Dai, Liming ^{[4
]}

Park, Ho Seok ^{[1
,2
]}

机构：

[1] Sungkyunkwan Univ, Samsung Adv Inst Hlth Sci & Technol SAIHST, Sch Chem Engn, Dept Hlth Sci & Technol, Suwon 440746, South Korea

[2] Sungkyunkwan Univ, SKKU Adv Inst Nano Technol SAINT, Suwon 440746, South Korea

[3] Sungkyunkwan Univ, Inst Basic Sci, Dept Chem, Suwon 16419, South Korea

[4] Univ New South Wales, Sch Chem Engn, Australian Carbon Mat Ctr A CMC, Sydney, NSW 2052, Australia

来源：

ACS ENERGY LETTERS | 2021年 / 6卷 / 07期

基金：

新加坡国家研究基金会;

关键词：

HYDROGEN-PRODUCTION; OXYGEN REDUCTION; NANOSHEETS; OPPORTUNITIES; CHALLENGES; CATALYSTS; EFFICIENT; EVOLUTION; RES2;

D O I：

10.1021/acsenergylett.1c00936

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：

Herein, we identify the unique trifunctional active sites of ReS2 and NiFe layered double hydroxide (NiFe-LDH) heteronanosheets (ReS2/NiFe-LDH) for integrated cascade Zn-air battery/electrolyzer systems. Along with the edge and surface sites of NiFe-LDH for both oxygen evolution reaction and oxygen reduction reaction activities, the unprecedented activity of the ReS2/NiFe-LDH heteronanosheets for the hydrogen evolution reaction emerges from the S-O bonds at the heterointerfaces, together with the strong coupling effect and vertical alignment of NiFe-LDH and ReS2. The outstanding trifunctional activities and a well understood mechanism ensure the use of ReS2/NiFe-LDH heteronanosheets for the development of integrated cascade battery/electrolyzer systems, in which electricity storage in the battery mode and H-2 production in the electrolyzer mode are efficiently switched with high round-trip efficiency (61%) and Faraday efficiency (96%). The systems show great promise for cost-effective energy storage and H-2 production applications ranging from the distribution in households to the assembly for electrical vehicles.

引用

页码：2460 / 2468

页数：9

共 39 条

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