Facile synthesis of MOF-derived hollow NiO microspheres integrated with graphene foam for improved lithium-storage properties

Shao, Jinxiao; Zhou, Hu; Feng, Jianhui; Zhu, Meizhou; Yuan, Aihua

doi:10.1016/j.jallcom.2019.01.157

Cited by 83 publications

(27 citation statements)

References 46 publications

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“…[11] With the thorough study of LIBs, MOFs have attracted more and more attention as electrode materials for batteries. [12,13] The porous structure is conducive to the conduct of electrolytes, and variable valence metals and organic ligands can act as redox sites and contribute to lithium storage performance. Therefore, MOFs are expected to become highperformance electrode materials for LIBs.…”

Section: Introductionmentioning

confidence: 99%

Strategies to Optimize the Lithium Storage Capability of the Metal‐Organic Framework Copper‐1,3,5‐Trimesic Acid (Cu‐BTC)

Yuan

Meng

et al. 2020

ChemElectroChem

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Metal-organic frameworks (MOFs) have recently been considered as potential electrodes for lithium-ion batteries. However, there are only a few reports of pristine MOFs as high-performance electrode materials; whereas, in other cases, their overall specific capacities and cycle stabilities are insufficient. In this work, Cu-BTC (BTC = 1,3,5-trimesic acid) is taken as an example to systematically explore the effects of polymer binder, activation temperature, and synthesis method on the electrochemical properties of MOFs. Through the optimization of these conditions, the electrochemical properties of Cu-BTC can be significantly improved. With carboxymethyl cellulose (CMC) as the binder, the activated Cu-BTC (synthesized with the precooling method) displays a stable specific capacity of 626.4 mAh g À 1 after 100 cycles of charge and discharge at a current density of 100 mA g À 1. Besides, the mechanism study shows that both the copper species and organic ligands of Cu-BTC take part in the redox chemistry contributing to the lithium storage capability.

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Section: Introductionmentioning

confidence: 99%

Strategies to Optimize the Lithium Storage Capability of the Metal‐Organic Framework Copper‐1,3,5‐Trimesic Acid (Cu‐BTC)

Yuan

Meng

et al. 2020

ChemElectroChem

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“…Metal‐organic frameworks (MOFs) are a new type of porous materials prepared by connecting metal atoms and organic ligands through coordination bonds, and have a wide range of applications in the field of energy storage and conversion . MOFs can be used as precursors/self‐sacrificing templates for the preparation of multi‐component derivatives, effectively improving the conductivity and displaying high electrochemical activities . Herein, we report the fabrication of cobalt iron bimetallic phosphide (CoFeP) by doping Co 2+ species in Fe‐based MOF followed by a two‐step reaction.…”

Section: Introductionmentioning

confidence: 99%

A Collaborative Strategy for Boosting Lithium Storage Performance of Iron Phosphide by Fabricating Hollow Structure and Doping Cobalt Species

et al. 2020

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Transition metal phosphides have received increasing attention in the field of lithium‐ion batteries (LIBs) due to their potential advantages in optimizing electrochemical performances. In order to improve the structural stability and electrochemical reaction kinetics of metal phosphides, it's an effective strategy for introducing foreign metal atoms to isolate bimetallic phosphides. Herein, a metal‐organic‐framework (MOF)‐templated protocol is utilized to synthesize CoFeP hollow nanorods as high‐performance LIBs anode materials. The results reveal that the substitution of Co ions enriches Fe‐based MOF‐derived structure with active sites, meanwhile the Co doping boosts the electronic conductivity. Therefore, the obtained CoFeP electrode displays a superior lithium‐storage ability to single metal phosphide (FeP), in terms of specific capacity, cycle stability, and rate capability. The reversible specific capacity of CoFeP at a current density of 0.1 A g−1 is as high as 897.2 mA h g−1, and the capacity can be still maintained at 478.5 mA h g−1 even at 1 A g−1 after 800 cycles. The intriguing LIBs performance of CoFeP is mainly ascribed to the collaborative contribution of hollow structure and Co doping.

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“…To meet with the ever‐growing demand for high energy density devices, scientists have been devoting to seek for ideal electrode materials with high energy density for batteries . Among the candidate materials, MOFs have been taken as inferior electrode materials for batteries under most occasions except that they can play as self‐sacrificial templates and upgrade the electrochemical performances of transition metal oxide/sulfide or carbonaceous materials by enlarging their specific surface areas and exposing greatly their active sites . Recently, pristine MOFs as electrode materials for LIBs have demonstrated high specific capacity.…”

Section: Introductionmentioning

confidence: 99%

“…[1] Amongthe candidate materials, MOFs have been taken as inferior electrode materials for batteries under most occasions [2,3] except that they can playa ss elf-sacrificial templates andu pgrade the electrochemical performances of transition metal oxide/sulfide or carbonaceous materials by enlarging their specific surface areas and exposing greatly their activesites. [4][5][6][7][8] Recently,p ristine MOFs as electrode materials for LIBs have demonstrated high specific capacity.F or example, Cu-BTC, Co-BTC, Mn-BTC,F e-BTC( BTC = 1,3,5-benzenetricarboxylate), Fe-MIL-88B ([Fe 3 O(BDC) 3 (H 2 O) 2 (NO 3 )] n ,B DC = 1,4-benzenedicarboxy-late), Co-TDA (TDA = 2,5-thiophenedicarboxylate), Mn-BDC, Ni-BHC (BHC = 1,2,3,4,5,6-benzenehexacarboxylate), CoCOP (cobalt coordinationp olymer), Me 2 NH 2 M(HCOO) 3 /M(HCOO) 2 (Me = CH 3 ,M= Mn, Co, Ni)h ybrid composites as anode materials for LIBs can achieve ah igh reversible specific capacity broughtb ym ultiple-electron redox reactions, and intercalation-likes tructurald eformation. [9][10][11][12][13][14][15][16][17][18] Howeveri nt hese cases, the reported mechanism of lithium storage is controversial.…”

Section: Introductionmentioning

confidence: 99%

Multiple Active Sites: Lithium Storage Mechanism of Cu‐TCNQ as an Anode Material for Lithium‐Ion Batteries

Meng

Chen

Fang

et al. 2019

Chemistry An Asian Journal

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Recently, carboxylate metal‐organic framework (MOF) materials were reported to perform well as anode materials for lithium‐ion batteries (LIBs); however, the presumed lithium storage mechanism of MOFs is controversial. To gain insight into the mechanism of MOFs as anode materials for LIBs, a self‐supported Cu‐TCNQ (TCNQ: 7,7,8,8‐tetracyanoquinodimethane) film was fabricated via an in situ redox routine, and directly used as electrode for LIBs. The first discharge and charge specific capacities of the self‐supported Cu‐TCNQ electrode are 373.4 and 219.4 mAh g−1, respectively. After 500 cycles, the reversible specific capacity of Cu‐TCNQ reaches 280.9 mAh g−1 at a current density of 100 mA g−1. Mutually validated data reveal that the high capacity is ascribed to the multiple‐electron redox conversion of both metal ions and ligands, as well as the reversible insertion and desertion of Li+ ions into the benzene rings of ligands. This work raises the expectation for MOFs as electrode materials of LIBs by utilizing multiple active sites and provides new clues for designing improved electrode materials for LIBs.

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Facile synthesis of MOF-derived hollow NiO microspheres integrated with graphene foam for improved lithium-storage properties

Cited by 83 publications

References 46 publications

Strategies to Optimize the Lithium Storage Capability of the Metal‐Organic Framework Copper‐1,3,5‐Trimesic Acid (Cu‐BTC)

Strategies to Optimize the Lithium Storage Capability of the Metal‐Organic Framework Copper‐1,3,5‐Trimesic Acid (Cu‐BTC)

A Collaborative Strategy for Boosting Lithium Storage Performance of Iron Phosphide by Fabricating Hollow Structure and Doping Cobalt Species

Multiple Active Sites: Lithium Storage Mechanism of Cu‐TCNQ as an Anode Material for Lithium‐Ion Batteries

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