Facile route to achieve mesoporous Cu(OH) 2 nanorods on copper foam for high-performance supercapacitor electrode

He, Dong; Wang, Guanda; Liu, Guolong; Bai, Jing; Suo, Hui; Zhao, Chun

doi:10.1016/j.jallcom.2016.12.398

Cited by 92 publications

(38 citation statements)

References 35 publications

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“…Table 1 compares the electrochemical performance of the as-prepared NiCuLDH material with other similar reported materials. It clearly shows that the as-prepared NiCuLDH(7-10) exhibits much higher capacitance and competitive rate capability than other Ni and Cu based hydroxide materials reported previously [17][18][19][20]34]. Further measurement by electrochemical impedance spectrum (EIS) (Fig.…”

Section: Binary Nicu Layered Double Hydroxide Nanosheets For Enhancedmentioning

confidence: 78%

“…One approach to solve this problem is through introduction of additional metal ions such as cobalt and aluminium to make binary LDH [13][14][15][16]. As an earth-abundant element, Cu based hydroxide materials recently received limited interest in application in SCs [17][18][19][20]. For example, Pramanik et al [20] reported a Cu(OH) 2 @RGO composite, which exhibited a specific capacitance of 602 F g −1 at a small current density of 0.2 A g −1 .…”

Section: Binary Nicu Layered Double Hydroxide Nanosheets For Enhancedmentioning

confidence: 99%

“…Compared to pristine NiLDH material, it is found that the optimum NiCuLDH(7-10) exhibited superior electrochemical properties including over 50% enhanced specific capacitance and higher capacitance retention rate (75% at 5 A g −1 ). These are attributed to the improved kinetics of Cu(OH) 2 -rGO 0.47 602 F g −1 at 0.2 A g −1 in 1 mol L −1 KOH 53% at 10 A g −1 89% at 5 A g −1 after 5000 cycles [20] Cu(OH) 2 nanorods 0.55 1.747 F cm −2 at 2 mA cm −2 in 5 mol L −1 NaOH 88.3% at 20 mA cm −2 97.3% after 5000 cycles [18] Cu(OH) 2 nanobelt arrays 0.5 217 mF cm −2 at 0.5 mA cm −2 in 1 mol L −1 NaOH 61 % at 2 mA cm −2 90% after 3000 cycles at 2 mA cm −2 [19] Cu(OH) 2 CO 3 nanowires 0.6 971 F g −1 at 1 A g −1 in 6 mol L −1 KOH 69.5% at 10 A g −1 91.5% after 3000 cycles at 5 A g −1 [21] Cl − intercalated α-Ni(OH) 2 0.45 1494 F g −1 at 1 A g −1 in 1 mol L −1 KOH 30% at 8 A g −1 81.9% after 500 cycles at 4 A g −1 [14] β-Ni(OH) 2 0.5 880 F g −1 at 2 A g −1 in 1 mol L −1 NaOH 54% at 20 A g −1 60% after 500 cycles at 5 A g −1 [35] NiCuLDH(7-10) 0.5 1953.5 F g −1 at 0.5 A g −1 in 2 mol L −1 KOH 75% at 5 A g −1 35% after 500 cycles at 5 A g −1 This work charge transport (lower series resistance) and interfacial charge transfer of the material. This work sheds light on developing high performance supercapacitor using earthabundant material.…”

Section: Science Chinamentioning

confidence: 99%

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Binary NiCu layered double hydroxide nanosheets for enhanced energy storage performance as supercapacitor electrode

2017

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Section: Binary Nicu Layered Double Hydroxide Nanosheets For Enhancedmentioning

confidence: 78%

Section: Binary Nicu Layered Double Hydroxide Nanosheets For Enhancedmentioning

confidence: 99%

Section: Science Chinamentioning

confidence: 99%

See 1 more Smart Citation

Binary NiCu layered double hydroxide nanosheets for enhanced energy storage performance as supercapacitor electrode

2017

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“…All the diffraction peaks of the CHNT can be assigned to orthorhombic symmetry of CH (JCPDF 35–0505). Besides the two peaks of 43.4 ° and 50.6 ° with red signs attributed to (111) and (200) plane are indexed to cubic Cu (JCPDF 65–9743) of the substrate, and no impure characteristic peaks are checked out, indicating the high purity of the CHNT, which is in agreement with the results of TEM (Figure ).…”

Section: Resultsmentioning

confidence: 83%

Copper Hydroxide Porous Nanotube Arrays Grown on Copper Foils as High-Performance Integrated Electrodes for Supercapacitors

Kang

Sheng

et al. 2017

ChemistrySelect

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Large‐area and uniform copper hydroxide (CH) nanotubes (NT) were synthesized on copper foils via facile treatment in alkaline solution. The CHNT, consisting of porous walls, were vertically grown on the Cu foils, and their morphology can be readily controlled by adjusting the reaction time. The prepared three‐dimensional (3D) CHNT/Cu composites were employed as electrodes for supercapacitors (SCs). A substantial improvement in the electrochemical performance has been observed for the 3D CHNT/Cu electrodes over the CH nanorods (NR)/Cu and nanobundles (NB)/Cu electrodes. Their areal capacitance is as high as 278 mF cm−2 and 216 mF cm−2 at a current density of 1 mA cm−2 and 10 mA cm−2, respectively, and they exhibit excellent stability with about 90.5% maintenance of initial specific capacitance at a constant current density of 5 mA cm−2 after 1000 cycles.

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“…At the same time, it is easy to load nanostructured AMs onto the metal scaffolds, such as, by electrochemical deposition or chemical vapor deposition . The most popular metal foams studied in this area include nickel foam and copper foam . For example, as shown in Figure , Hng and co‐workers reported a design of 3D ordered hierarchically porous Fe 2 O 3 electrode based on nickel foam .…”

Section: Controlling Both Etn and Itn In Composite Electrodesmentioning

confidence: 99%

Strategies for Building Robust Traffic Networks in Advanced Energy Storage Devices: A Focus on Composite Electrodes

Wang

Min

et al. 2018

Advanced Materials

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portable electronics, cell phones, electrical vehicles (EVs), aerospace, etc. For advanced batteries, higher and higher energy density and/or power density, long cycling stability, good device safety, and low-cost are the primary goals. Since the energy density is mainly dependent on the specific capacity and loading level of active materials (AMs), AMs usually dominate the volume and weight inside the batteries. Because of this, tremendous efforts have been focused on high-performance AMs. However, the electrochemical performance of energy storage devices (ESDs) is fundamentally determined by a collective contribution or teamwork of all the components: AMs, electrolyte, separator, conductive agent, binders, etc. More importantly, with the increasing interests on high-capacity AMs (e.g., silicon, sulfur, Li-rich cathode, etc.), it becomes very clear that the "traffic system" (i.e., the charge transport system) plays very critical roles in the performance of the high-capacity AMs. Take silicon anode for example, a durable and flexible conductive network inside the electrode composite has been vital for addressing the big volume change issue. In this case, high-performance binders and conductive agent that can generate advanced conductive network are the keys. [2] In addition, with the increasing interests on EVs and flexible electronics, building a powerful and robust charge transport system inside ESDs is an urgent and critical task to support fast charging/ discharging capability and even flexibility of ESDs. In short, with the fast development of energy storage technologies, EVs, cell phones, etc., there is a critical, urgent, and challenging task on building powerful and durable charge transport system in next-generation advanced ESDs. Charge Transport Inside ESDsThe thriving of big cities highly relies on a powerful traffic system that transports the people, foods, products, etc. Similar to this picture, ESDs are powered by the transportation of charges, including both ions and electrons. As illustrated in Figure 1a, one can analogize the charge transport system and AMs in the electrodes of ESDs to the traffic system and buildings (i.e., host system of people), respectively. This analogy example not only help to explain the relationship between The charge transport system in an energy storage device (ESD) fundamentally controls the electrochemical performance and device safety. As the skeleton of the charge transport system, the "traffic" networks connecting the active materials are primary structural factors controlling the transport of ions/electrons. However, with the development of ESDs, it becomes very critical but challenging to build traffic networks with rational structures and mechanical robustness, which can support high energy density, fast charging and discharging capability, cycle stability, safety, and even device flexibility. This is especially true for ESDs with high-capacity active materials (e.g., sulfur and silicon), which show notable volume change during cycling. Therefore, there is an ur...

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Facile route to achieve mesoporous Cu(OH) 2 nanorods on copper foam for high-performance supercapacitor electrode

Cited by 92 publications

References 35 publications

Binary NiCu layered double hydroxide nanosheets for enhanced energy storage performance as supercapacitor electrode

Binary NiCu layered double hydroxide nanosheets for enhanced energy storage performance as supercapacitor electrode

Copper Hydroxide Porous Nanotube Arrays Grown on Copper Foils as High-Performance Integrated Electrodes for Supercapacitors

Strategies for Building Robust Traffic Networks in Advanced Energy Storage Devices: A Focus on Composite Electrodes

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