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2D Metal‐Organic Framework Derived Co 3 O 4 for the Oxygen Evolution Reaction and High‐Performance Lithium‐Ion Batteries
Author(s) -
Zheng HaoYan,
Xie Dan,
Li He,
Wu ShuangYu,
Qin BoWen,
Cui Zheng,
Zhang XiaoYing,
Zhang JingPing
Publication year - 2020
Publication title -
chemnanomat
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.947
H-Index - 32
ISSN - 2199-692X
DOI - 10.1002/cnma.202000056
Subject(s) - overpotential , oxygen evolution , catalysis , lithium (medication) , electrochemistry , anode , materials science , metal organic framework , chemical engineering , oxygen , battery (electricity) , metal , nanotechnology , chemistry , electrode , thermodynamics , organic chemistry , adsorption , metallurgy , medicine , power (physics) , physics , engineering , endocrinology
Recently, MOF‐derived (metal‐organic framework) 2D materials, due to the special structure of the MOF inherited, have become a potential candidate for application in energy storage and conversion. In this work, a new 2D layered Co−MOF was synthesized as the precursor for fabricating Napoleon‐like Co 3 O 4 (NL−Co 3 O 4 ). The monolayer thickness of NL−Co 3 O 4 is approximately 70 nm. The unique structure of layered porous of NL−Co 3 O 4 derived from Co−MOF plays an important role in improving electrochemical and electro‐catalysis properties. As lithium ion battery anode material, NL−Co 3 O 4 shows out‐bound cycling performance and rate capacity, which has an unprecedented high reversible capacity of 1120.5 mA h g −1 at 200 mA g −1 after 300 cycles and high rate capacities of 579.4 mA h g −1 under the current density of 6.4 A g −1 . NL−Co 3 O 4 still exhibits capacity of 679 and 576 mA h g −1 after 200 cycles at high current densities of 1 and 4 A g −1 , respectively. Moreover, NL−Co 3 O 4 has efficient oxygen evolution reduction (OER) catalytic performance (overpotential, ca. 420 mV), comparable with commercial RuO 2 . During the process of continuous catalysis of OER, NL−Co 3 O 4 shows good durability for about 15 h.