Ternary MOF-Based Redox Active Sites Enabled 3D-on-2D Nanoarchitectured Battery-Type Electrodes for High-Energy-Density Supercapatteries

Abstract Designing rationally combined metal–organic frameworks (MOFs) with multifunctional nanogeometries is of significant research interest to enable the electrochemical properties in advanced energy storage devices. Herein, we explored a new class of binder-free dual-layered Ni–Co–Mn-based MOFs (NCM-based MOFs) with three-dimensional (3D)-on-2D nanoarchitectures through a polarity-induced solution-phase method for high-performance supercapatteries. The hierarchical NCM-based MOFs having grown on nickel foam exhibit a battery-type charge storage mechanism with superior areal capacity (1311.4 μAh cm−2 at 5 mA cm−2), good rate capability (61.8%; 811.67 μAh cm−2 at 50 mA cm−2), and an excellent cycling durability. The superior charge storage properties are ascribed to the synergistic features, higher accessible active sites of dual-layered nanogeometries, and exalted redox chemistry of multi metallic guest species, respectively. The bilayered NCM-based MOFs are further employed as a battery-type electrode for the fabrication of supercapattery paradigm with biomass-derived nitrogen/oxygen doped porous carbon as a negative electrode, which demonstrates excellent capacity of 1.6 mAh cm−2 along with high energy and power densities of 1.21 mWh cm−2 and 32.49 mW cm−2, respectively. Following, the MOF-based supercapattery was further assembled with a renewable solar power harvester to use as a self-charging station for various portable electronic applications.

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Hierarchical coral-like MnCo2O4.5@Co-Ni LDH composites on Ni foam as promising electrodes for high-performance supercapacitor

Nanotechnology ◽

10.1088/1361-6528/ac3a3c ◽

2021 ◽

Author(s):

yajun JI ◽

Fei Chen ◽

Shufen Tan ◽

Fuyong Ren

Keyword(s):

Electrochemical Performance ◽

Metal Oxides ◽

High Performance ◽

High Capacity ◽

Rate Capability ◽

Negative Electrode ◽

High Energy ◽

Hybrid Nanostructures ◽

High Energy Density ◽

Ni Foam

Abstract Transition metal oxides are generally designed as hybrid nanostructures with high performance for supercapacitors by enjoying the advantages of various electroactive materials. In this paper, a convenient and efficient route had been proposed to prepare hierarchical coral-like MnCo2O4.5@Co-Ni LDH composites on Ni foam, in which MnCo2O4.5 nanowires were enlaced with ultrathin Co-Ni layered double hydroxides nanosheets to achieve high capacity electrodes for supercapacitors. Due to the synergistic effect of shell Co-Ni LDH and core MnCo2O4.5, the outstanding electrochemical performance in three-electrode configuration was triggered (high area capacitance of 5.08 F/cm2 at 3 mA/cm2 and excellent rate capability of maintaining 61.69 % at 20 mA/cm2), which is superior to those of MnCo2O4.5, Co-Ni LDH and other metal oxides based composites reported. Meanwhile, the as-prepared hierarchical MnCo2O4.5@Co-Ni LDH electrode delivered improved electrical conductivity than that of pristine MnCo2O4.5. Furthermore, the as-constructed asymmetric supercapacitor using MnCo2O4.5@Co-Ni LDH as positive and activated carbon as negative electrode presented a rather high energy density of 220 μWh/cm2 at 2400 μW/cm2 and extraordinary cycling durability with the 100.0 % capacitance retention over 8000 cycles at 20 mA/cm2, demonstrating the best electrochemical performance compared to other asymmetric supercapacitors using metal oxides based composites as positive electrode material. It can be expected that the obtained MnCo2O4.5@Co-Ni LDH could be used as the high performance and cost-effective electrode in supercapacitors.

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In-Situ Synthesis of Heterostructured Carbon-Coated Co/MnO Nanowire Arrays for High-Performance Anodes in Asymmetric Supercapacitors

Molecules ◽

10.3390/molecules25143218 ◽

2020 ◽

Vol 25 (14) ◽

pp. 3218

Author(s):

Guoqing Chen ◽

Xuming Zhang ◽

Yuanhang Ma ◽

Hao Song ◽

Chaoran Pi ◽

...

Keyword(s):

Electron Transfer ◽

High Performance ◽

Negative Electrode ◽

High Energy ◽

High Energy Density ◽

Vanadium Nitride ◽

Carbon Cloth ◽

Energy Storage Devices ◽

Capacitance Performance

Structural design is often investigated to decrease the electron transfer depletion in/on the pseudocapacitive electrode for excellent capacitance performance. However, a simple way to improve the internal and external electron transfer efficiency is still challenging. In this work, we prepared a novel structure composed of cobalt (Co) nanoparticles (NPs) embedded MnO nanowires (NWs) with an N-doped carbon (NC) coating on carbon cloth (CC) by in situ thermal treatment of polydopamine (PDA) coated MnCo2O4.5 NWs in an inert atmosphere. The PDA coating was carbonized into the NC shell and simultaneously reduced the MnCo2O4.5 to Co NPs and MnO NWs, which greatly improve the surface and internal electron transfer ability on/in MnO boding well supercapacitive properties. The hybrid electrode shows a high specific capacitance of 747 F g−1 at 1 A g−1 and good cycling stability with 93% capacitance retention after 5,000 cycles at 10 A g−1. By coupling with vanadium nitride with an N-doped carbon coating (VN@NC) negative electrode, the asymmetric supercapacitor delivers a high energy density of 48.15 Wh kg−1 for a power density of 0.96 kW kg−1 as well as outstanding cycling performance with 82% retention after 2000 cycles at 10 A g−1. The electrode design and synthesis suggests large potential in the production of high-performance energy storage devices.

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Nanostructured porous wires of iron cobaltite: novel positive electrode for high-performance hybrid energy storage devices

Journal of Materials Chemistry A ◽

10.1039/c5ta02701b ◽

2015 ◽

Vol 3 (32) ◽

pp. 16849-16859 ◽

Cited By ~ 65

Author(s):

Afshin Pendashteh ◽

Jesus Palma ◽

Marc Anderson ◽

Rebeca Marcilla

Keyword(s):

Energy Storage ◽

Energy Density ◽

High Performance ◽

Nickel Foam ◽

High Energy ◽

High Energy Density ◽

Energy Storage Devices ◽

Storage Devices ◽

Hybrid Energy ◽

Hybrid Energy Storage

Nanostructured porous wires of FeCo2O4 supported on nickel foam were synthesized and employed as binder/additive-free electrodes in asymmetric aqueous supercapacitors, showing a high energy density of 23 Wh kg−1.

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Fabrication of Hierarchical NiMoO4/NiMoO4 Nanoflowers on Highly Conductive Flexible Nickel Foam Substrate as a Capacitive Electrode Material for Supercapacitors with Enhanced Electrochemical Performance

Energies ◽

10.3390/en12061143 ◽

2019 ◽

Vol 12 (6) ◽

pp. 1143 ◽

Cited By ~ 6

Author(s):

Anil Yedluri ◽

Tarugu Anitha ◽

Hee-Je Kim

Keyword(s):

Energy Density ◽

Electrochemical Performance ◽

Specific Capacitance ◽

Electrode Material ◽

High Performance ◽

Nickel Foam ◽

High Specific Capacitance ◽

High Energy ◽

High Energy Density ◽

Charge Discharge

Hierarchical NiMoO4/NiMoO4 nanoflowers were fabricated on highly conductive flexible nickel foam (NF) substrates using a facile hydrothermal method to achieve rapid charge-discharge ability, high energy density, long cycling lifespan, and higher flexibility for high-performance supercapacitor electrode materials. The synthesized composite electrode material, NF/NiMoO4/NiMoO4 with a nanoball-like NF/NiMoO4 structure on a NiMoO4 surface over a NF substrate, formed a three-dimensional interconnected porous network for high-performance electrodes. The novel NF/NiMoO4/NiMoO4 nanoflowers not only enhanced the large surface area and increased the electrochemical activity, but also provided an enhanced rapid ion diffusion path and reduced the charge transfer resistance of the entire electrode effectively. The NF/NiMoO4/NiMoO4 composite exhibited significantly improved supercapacitor performance in terms of a sustained cycling life, high specific capacitance, rapid charge-discharge capability, high energy density, and good rate capability. Electrochemical analysis of the NF/NiMoO4/NiMoO4 nanoflowers fabricated on the NF substrate revealed ultra-high electrochemical performance with a high specific capacitance of 2121 F g−1 at 12 mA g−1 in a 3 M KOH electrolyte and 98.7% capacitance retention after 3000 cycles at 14 mA g−1. This performance was superior to the NF/NiMoO4 nanoball electrode (1672 F g−1 at 12 mA g−1 and capacitance retention 93.4% cycles). Most importantly, the SC (NF/NiMoO4/NiMoO4) device displayed a maximum energy density of 47.13 W h kg−1, which was significantly higher than that of NF/NiMoO4 (37.1 W h kg−1). Overall, the NF/NiMoO4/NiMoO4 composite is a suitable material for supercapacitor applications.

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Stable Lithium-Carbon Composite Enabled by Dual-Salt Additives

Nano-Micro Letters ◽

10.1007/s40820-021-00633-3 ◽

2021 ◽

Vol 13 (1) ◽

Author(s):

Lei Zheng ◽

Feng Guo ◽

Tuo Kang ◽

Yingzhu Fan ◽

Wei Gu ◽

...

Keyword(s):

Coulombic Efficiency ◽

Solid Electrolyte Interphase ◽

Rate Capability ◽

Negative Electrode ◽

High Energy ◽

Carbon Composite ◽

High Reactivity ◽

Cycling Stability ◽

High Energy Density ◽

Lithium Metal

AbstractLithium metal is regarded as the ultimate negative electrode material for secondary batteries due to its high energy density. However, it suffers from poor cycling stability because of its high reactivity with liquid electrolytes. Therefore, continuous efforts have been put into improving the cycling Coulombic efficiency (CE) to extend the lifespan of the lithium metal negative electrode. Herein, we report that using dual-salt additives of LiPF6 and LiNO3 in an ether solvent-based electrolyte can significantly improve the cycling stability and rate capability of a Li-carbon (Li-CNT) composite. As a result, an average cycling CE as high as 99.30% was obtained for the Li-CNT at a current density of 2.5 mA cm–2 and an negative electrode to positive electrode capacity (N/P) ratio of 2. The cycling stability and rate capability enhancement of the Li-CNT negative electrode could be attributed to the formation of a better solid electrolyte interphase layer that contains both inorganic components and organic polyether. The former component mainly originates from the decomposition of the LiNO3 additive, while the latter comes from the LiPF6-induced ring-opening polymerization of the ether solvent. This novel surface chemistry significantly improves the CE of Li negative electrode, revealing its importance for the practical application of lithium metal batteries.

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Bio-inspired low-tortuosity carbon host for high-performance lithium-metal anode

National Science Review ◽

10.1093/nsr/nwy148 ◽

2018 ◽

Vol 6 (2) ◽

pp. 247-256 ◽

Cited By ~ 14

Author(s):

Yi-Chen Yin ◽

Zhi-Long Yu ◽

Zhi-Yuan Ma ◽

Tian-Wen Zhang ◽

Yu-Yang Lu ◽

...

Keyword(s):

Volume Change ◽

High Performance ◽

Rate Capability ◽

High Energy ◽

High Energy Density ◽

Lithium Metal ◽

Metal Anode ◽

Lithium Metal Anode ◽

Nucleation Sites ◽

Micro Channels

Abstract Lithium metal is one of the most promising anode materials for high-energy-density Li batteries. However, low stability caused by dendrite growth and volume change during cycling hinders its practical application. Herein, we report an ingenious design of bio-inspired low-tortuosity carbon with tunable vertical micro-channels to be used as a host to incorporate nanosized Sn/Ni alloy nucleation sites, which can guide Li metal's plating/stripping and meanwhile accommodate the volume change. The pore sizes of the vertical channels of the carbon host can be regulated to investigate the structure–performance correlation. After compositing Li, the bio-inspired carbon host with the smallest pore size (∼14 μm) of vertical channels exhibits the lowest overpotential (∼18 mV at 1 mA cm−2), most stable tripping/plating voltage profiles, and best cycling stability (up to 500 cycles) in symmetrical cells. Notably, the carbon/Li composite anode is more rewarding than Li foil when coupled with LiFePO4 in full cells, exhibiting a much lower polarization effect, better rate capability and higher capacity retention (90.6% after 120 cycles). This novel bio-inspired design of a low-tortuosity carbon host with nanoalloy coatings may open a new avenue for fabricating advanced Li-metal batteries with high performance.

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Nanostructure selenium compounds as pseudocapacitive electrodes for high-performance asymmetric supercapacitor

Royal Society Open Science ◽

10.1098/rsos.171186 ◽

2018 ◽

Vol 5 (1) ◽

pp. 171186 ◽

Cited By ~ 11

Author(s):

Guofu Ma ◽

Fengting Hua ◽

Kanjun Sun ◽

Enke Fenga ◽

Hui Peng ◽

...

Keyword(s):

Electrode Materials ◽

Rate Capability ◽

Negative Electrode ◽

High Specific Capacitance ◽

High Energy ◽

Cycling Stability ◽

High Energy Density ◽

Storage Device ◽

Asymmetric Supercapacitor ◽

Capacitance Performance

The electrochemical performance of an energy conversion and storage device like the supercapacitor mainly depends on the microstructure and morphology of the electrodes. In this paper, to improve the capacitance performance of the supercapacitor, the all-pseudocapacitive electrodes of lamella-like Bi 18 SeO 29 /BiSe as the negative electrode and flower-like Co 0.85 Se nanosheets as the positive electrode are synthesized by using a facile low-temperature one-step hydrothermal method. The microstructures and morphology of the electrode materials are carefully characterized, and the capacitance performances are also tested. The Bi 18 SeO 29 /BiSe and Co 0.85 Se have high specific capacitance (471.3 F g –1 and 255 F g –1 at 0.5 A g –1 ), high conductivity, outstanding cycling stability, as well as good rate capability. The assembled asymmetric supercapacitor completely based on the pseudocapacitive electrodes exhibits outstanding cycling stability (about 93% capacitance retention after 5000 cycles). Moreover, the devices exhibit high energy density of 24.2 Wh kg –1 at a power density of 871.2 W kg –1 in the voltage window of 0–1.6 V with 2 M KOH solution.

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Rapid in situ growth of β-Ni(OH)2 nanosheet arrays on nickel foam as an integrated electrode for supercapacitors exhibiting high energy density

Dalton Transactions ◽

10.1039/d0dt00687d ◽

2020 ◽

Vol 49 (15) ◽

pp. 4956-4966 ◽

Cited By ~ 7

Author(s):

Jingbo Li ◽

Yu Liu ◽

Wei Cao ◽

Nan Chen

Keyword(s):

Energy Density ◽

High Performance ◽

Nickel Foam ◽

High Energy ◽

High Energy Density ◽

In Situ Growth ◽

Nanosheet Arrays

A rapid in situ method was employed to synthesize the β-Ni(OH)2@NF integrated electrode for a high performance ASC device.

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One-step electrodeposited MoS2@Ni-mesh electrode for flexible and transparent asymmetric solid-state supercapacitors

Journal of Materials Chemistry A ◽

10.1039/d0ta07764j ◽

2020 ◽

Vol 8 (45) ◽

pp. 24040-24052

Author(s):

Bobby Singh Soram ◽

Jiu Yi Dai ◽

Ibomcha Singh Thangjam ◽

Nam Hoon Kim ◽

Joong Hee Lee

Keyword(s):

Solid State ◽

Energy Density ◽

High Performance ◽

Negative Electrode ◽

High Energy ◽

High Energy Density ◽

One Step

One-step electrodeposited MoS2@Ni-mesh as a high-performance negative electrode; a high energy density flexible and transparent asymmetric solid-state supercapacitor is fabricated.

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MoO2 nanoparticles embedded in N-doped hydrangea-like carbon as a sulfur host for high-performance lithium–sulfur batteries

RSC Advances ◽

10.1039/d0ra02102d ◽

2020 ◽

Vol 10 (34) ◽

pp. 20173-20183

Author(s):

Yasai Wang ◽

Guilin Feng ◽

Yang Wang ◽

Zhenguo Wu ◽

Yanxiao Chen ◽

...

Keyword(s):

Energy Storage ◽

Energy Density ◽

High Performance ◽

High Energy ◽

High Energy Density ◽

Energy Storage Devices ◽

Storage Devices ◽

Lithium Sulfur Batteries ◽

Sulfur Host ◽

Lithium Sulfur

Lithium–sulfur batteries are considered to be promising energy storage devices owing to their high energy density, relatively low price and abundant resources.

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