A comparative study of supercapacitive performances of nickel cobalt layered double hydroxides coated on ZnO nanostructured arrays on textile fibre as electrodes for wearable energy storage devices

Nanoscale ◽  
2014 ◽  
Vol 6 (4) ◽  
pp. 2434 ◽  
Author(s):  
Nguyen Thi Hong Trang ◽  
Huynh Van Ngoc ◽  
Niranjanmurthi Lingappan ◽  
Dae Joon Kang
Keyword(s):  
Energy Storage ◽  
Comparative Study ◽  
Layered Double Hydroxides ◽  
Textile Fibre ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Nickel Cobalt ◽  
Double Hydroxides ◽  
Nanostructured Arrays

scholarly journals N and S co-doped graphene enfolded Ni–Co-layered double hydroxides: an excellent electrode material for high-performance energy storage devices

RSC Advances ◽  
2021 ◽  
Vol 11 (54) ◽  
pp. 33895-33904
Author(s):  
Firoz Khan
Keyword(s):  
Energy Storage ◽  
Layered Double Hydroxides ◽  
High Performance ◽  
Energy Storage Devices ◽  
Heteroatom Doping ◽  
Storage Devices ◽  
Discharge Capacitance ◽  
Doped Graphene ◽  
Double Hydroxides ◽  
Co Doped

A novel graphene embedded Ni–Co-LDH electrode was developed. The charge transportation rate was enhanced via N and S heteroatom doping, which results in an excellent discharge capacitance of 2193 F g−1 at 5 A g−1.

scholarly journals Layered double hydroxide membrane with high hydroxide conductivity and ion selectivity for energy storage device

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Jing Hu ◽  
Xiaomin Tang ◽  
Qing Dai ◽  
Zhiqiang Liu ◽  
Huamin Zhang ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Ion Selectivity ◽  
Storage Device ◽  
Hydroxyl Groups ◽  
Flow Battery ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Ions Transport ◽  
Double Hydroxides

AbstractMembranes with fast and selective ions transport are highly demanded for energy storage devices. Layered double hydroxides (LDHs), bearing uniform interlayer galleries and abundant hydroxyl groups covalently bonded within two-dimensional (2D) host layers, make them superb candidates for high-performance membranes. However, related research on LDHs for ions separation is quite rare, especially the deep-going study on ions transport behavior in LDHs. Here, we report a LDHs-based composite membrane with fast and selective ions transport for flow battery application. The hydroxide ions transport through LDHs via vehicular (standard diffusion) & Grotthuss (proton hopping) mechanisms is uncovered. The LDHs-based membrane enables an alkaline zinc-based flow battery to operate at 200 mA cm−2, along with an energy efficiency of 82.36% for 400 cycles. This study offers an in-depth understanding of ions transport in LDHs and further inspires their applications in other energy-related devices.

scholarly journals Layered double hydroxide membrane with high hydroxide conductivity and ion selectivity for energy storage device

2020 ◽  
Author(s):  
Jing Hu ◽  
Xiaomin Tang ◽  
Qing Dai ◽  
Zhiqiang Liu ◽  
Huamin Zhang ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Ion Selectivity ◽  
Storage Device ◽  
Hydroxyl Groups ◽  
Flow Battery ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Ions Transport ◽  
Double Hydroxides

Abstract Membranes with fast and selective ions transport are highly demanded for energy storage devices. Layered double hydroxides (LDHs), bearing uniform interlayer galleries and abundant hydroxyl groups covalently bonded within two-dimensional (2D) host layers, make them superb candidates for high-performance membranes. However, related research on LDHs for ions separation is quite rare, especially the deep-going study on ions transport behavior in LDHs. Here, we report a LDHs-based composite membrane with fast and selective ions transport for flow battery application. The hydroxide ions transport through LDHs via vehicular (standard diffusion) & Grotthuss (proton hopping) mechanisms is uncovered. The LDHs-based membrane enables an alkaline zinc-based flow battery to operate at 200 mA cm− 2, along with an energy efficiency of 82.36% for 400 cycles, which is among the highest efficiencies for zinc-based flow batteries. This study offers an in-depth understanding of ions transport in LDHs and further inspires their applications in other energy-related devices.

Selenium-rich nickel cobalt bimetallic selenides with core–shell architecture enable superior hybrid energy storage devices

Nanoscale ◽  
2020 ◽  
Vol 12 (6) ◽  
pp. 4040-4050 ◽  
Author(s):  
Yi-Lin Liu ◽  
Cheng Yan ◽  
Gui-Gen Wang ◽  
Fei Li ◽  
Qi Kang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Core Shell ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Hybrid Energy ◽  
Hybrid Device ◽  
Hybrid Energy Storage ◽  
Cathode Electrode ◽  
Nickel Cobalt

Selenide-rich bimetallic selenide spheres with core–shell nanostructure were rationally designed and synthesized towards superior battery-supercapacitor hybrid device as the cathode electrode by selenizing hydrothermal-derived Ni–Co spheres.

scholarly journals Bimetallic Nickel Cobalt Sulfide as Efficient Electrocatalyst for Zn–Air Battery and Water Splitting

2019 ◽  
Vol 11 (1) ◽  
Author(s):  
Jingyan Zhang ◽  
Xiaowan Bai ◽  
Tongtong Wang ◽  
Wen Xiao ◽  
Pinxian Xi ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Conversion ◽  
Water Splitting ◽  
Specific Capacity ◽  
Cobalt Sulfide ◽  
Alkaline Electrolyte ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Nickel Cobalt ◽  
Air Battery

Abstract The development of efficient earth-abundant electrocatalysts for oxygen reduction, oxygen evolution, and hydrogen evolution reactions (ORR, OER, and HER) is important for future energy conversion and energy storage devices, for which both rechargeable Zn–air batteries and water splitting have raised great expectations. Herein, we report a single-phase bimetallic nickel cobalt sulfide ((Ni,Co)S2) as an efficient electrocatalyst for both OER and ORR. Owing to the synergistic combination of Ni and Co, the (Ni,Co)S2 exhibits superior electrocatalytic performance for ORR, OER, and HER in an alkaline electrolyte, and the first principle calculation results indicate that the reaction of an adsorbed O atom with a H2O molecule to form a *OOH is the potential limiting step in the OER. Importantly, it could be utilized as an advanced air electrode material in Zn–air batteries, which shows an enhanced charge–discharge performance (charging voltage of 1.71 V and discharge voltage of 1.26 V at 2 mA cm−2), large specific capacity (842 mAh gZn−1 at 5 mA cm−2), and excellent cycling stability (480 h). Interestingly, the (Ni,Co)S2-based Zn–air battery can efficiently power an electrochemical water-splitting unit with (Ni,Co)S2 serving as both the electrodes. This reveals that the prepared (Ni,Co)S2 has promising applications in future energy conversion and energy storage devices.

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