Cation-exchange-assisted formation of NiS/SnS2 porous nanowalls with ultrahigh energy density for battery–supercapacitor hybrid devices

2020 ◽  
Vol 8 (6) ◽  
pp. 3300-3310 ◽  
Author(s):  
Shundong Guan ◽  
Xiuli Fu ◽  
Bo Zhang ◽  
Ming Lei ◽  
Zhijian Peng
Keyword(s):  
Energy Density ◽  
Cation Exchange ◽  
Specific Capacity ◽  
Ultrahigh Energy ◽  
Exchange Method ◽  
Aqueous Battery ◽  
Vertically Aligned ◽  
Hybrid Devices

Cation-exchange method is developed to synthesize vertically aligned NiS/SnS2 porous nanowalls for aqueous battery–supercapacitor hybrid devices with ultrahigh specific capacity.

Rapid microwave-assisted synthesis of high-rate FeS2 nanoparticles anchored on graphene for hybrid supercapacitors with ultrahigh energy density

2018 ◽  
Vol 6 (30) ◽  
pp. 14956-14966 ◽  
Author(s):  
Zhiqin Sun ◽  
Huiming Lin ◽  
Feng Zhang ◽  
Xue Yang ◽  
He Jiang ◽  
...  
Keyword(s):  
Solid State ◽  
Energy Density ◽  
Specific Capacity ◽  
High Rate ◽  
Microwave Assisted Synthesis ◽  
Ultrahigh Energy ◽  
Hybrid Supercapacitor ◽  
High Specific Capacity ◽  
Hybrid Supercapacitors ◽  
Microwave Assisted

Benefitting from the high specific capacity (793 C g−1) of the FeS2/graphene anode, an assembled all-solid-state hybrid supercapacitor device based on the FeS2/graphene anode and a Ni(OH)2@Co9S8 cathode achieves an ultrahigh energy density of up to 95.8 W h kg−1 at a power density of 949 W kg−1.

scholarly journals Evaluation of the Antimicrobial Protection of Pharmaceutical Kaolin and Talc Modified with Copper and Zinc

Materials ◽  
2021 ◽  
Vol 14 (5) ◽  
pp. 1173
Author(s):  
Fotini Martsouka ◽  
Konstantinos Papagiannopoulos ◽  
Sophia Hatziantoniou ◽  
Martin Barlog ◽  
Giorgos Lagiopoulos ◽  
...  
Keyword(s):  
Cation Exchange ◽  
Photoelectron Spectroscopy ◽  
Antimicrobial Properties ◽  
Exchange Capacity ◽  
Elevated Concentration ◽  
Chemical Mapping ◽  
Exchange Method ◽  
X Ray ◽  
Copper And Zinc ◽  
Antimicrobial Protection

Six pharmaceutical pastes were prepared using chemically modified kaolin and talc powders. Tests were conducted to determine their structural and chemical characteristics as well as their antimicrobial protection, thus rendering them suitable for cosmetic and pharmaceutical uses. Kaolin and talc were treated chemically via the cation exchange method to load the clay particles with copper and zinc ions, two cations well known for their antimicrobial properties. Mineralogical analyses were conducted by using X-ray diffraction (XRD) before and after the modification, confirming the mineralogical purity of the samples. Scanning electron microscopy was also used in conjunction with energy dispersed spectroscopy (SEM-EDS) to obtain chemical mapping images, revealing the dispersion of the added metals upon the clay minerals surfaces. Moreover, chemical analysis has been performed (XRF) to validate the enrichment of the clays with each metal utilizing the cation exchange capacity. All modified samples showed the expected elevated concentration in copper or zinc in comparison to their unmodified versions. From the X-ray photoelectron spectroscopy (XPS), the chemical state of the samples’ surfaces was investigated, revealing the presence of salt compounds and indicating the oxidation state of adsorbed metals. Finally, the resistance of pastes in microbial growth when challenged with bacteria, molds, and yeasts was assessed. The evaluation is based on the European Pharmacopeia (EP) criteria.

Hollow-porous nanospheres of ZnMn2O4 spinel: A high energy density cathode for rechargeable aqueous battery

2021 ◽  
Vol 263 ◽  
pp. 124373
Author(s):  
Atin Pramanik ◽  
Shreyasi Chattopadhyay ◽  
Sandipan Maiti ◽  
Goutam De ◽  
Sourindra Mahanty
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Aqueous Battery

Sulfurized Polyacrylonitrile for High-Performance Lithium Sulfur Batteries: Advances and Prospects

2021 ◽  
Author(s):  
Xiaohui Zhao ◽  
Chonglong Wang ◽  
Ziwei Li ◽  
Xuechun Hu ◽  
Amir A. Razzaq ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Specific Capacity ◽  
Rechargeable Batteries ◽  
Next Generation ◽  
Lithium Sulfur Batteries ◽  
Theoretical Specific Capacity ◽  
Lithium Sulfur

The lithium sulfur (Li-S) batteries have a high theoretical specific capacity (1675 mAh g-1) and energy density (2600 Wh kg-1), exerting a high perspective as the next-generation rechargeable batteries for...

scholarly journals Novel Lithium-Ion Capacitor Based on a NiO-rGO Composite

Materials ◽  
2021 ◽  
Vol 14 (13) ◽  
pp. 3586
Author(s):  
Qi An ◽  
Xingru Zhao ◽  
Shuangfu Suo ◽  
Yuzhu Bai
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Power Density ◽  
High Power ◽  
Specific Capacity ◽  
Lithium Ion ◽  
High Energy ◽  
Cycle Life ◽  
High Energy Density ◽  
Lithium Ion Capacitor

Lithium-ion capacitors (LICs) have been widely explored for energy storage. Nevertheless, achieving good energy density, satisfactory power density, and stable cycle life is still challenging. For this study, we fabricated a novel LIC with a NiO-rGO composite as a negative material and commercial activated carbon (AC) as a positive material for energy storage. The NiO-rGO//AC system utilizes NiO nanoparticles uniformly distributed in rGO to achieve a high specific capacity (with a current density of 0.5 A g−1 and a charge capacity of 945.8 mA h g−1) and uses AC to provide a large specific surface area and adjustable pore structure, thereby achieving excellent electrochemical performance. In detail, the NiO-rGO//AC system (with a mass ratio of 1:3) can achieve a high energy density (98.15 W h kg−1), a high power density (10.94 kW kg−1), and a long cycle life (with 72.1% capacity retention after 10,000 cycles). This study outlines a new option for the manufacture of LIC devices that feature both high energy and high power densities.

Ultrahigh‐Energy‐Density Flexible Lithium‐Metal Full Cells based on Conductive Fibrous Skeletons

2021 ◽  
pp. 2100531
Author(s):  
Seung‐Hyeok Kim ◽  
Nag‐Young Kim ◽  
Ui‐Jin Choe ◽  
Ju‐Myung Kim ◽  
Young‐Gi Lee ◽  
...  
Keyword(s):  
Energy Density ◽  
Ultrahigh Energy ◽  
Lithium Metal

scholarly journals Atomic Engineering Catalyzed MnO 2 Electrolysis Kinetics for a Hybrid Aqueous Battery with High Power and Energy Density

2020 ◽  
Vol 32 (25) ◽  
pp. 2001894 ◽  
Author(s):  
Dongliang Chao ◽  
Chao Ye ◽  
Fangxi Xie ◽  
Wanhai Zhou ◽  
Qinghua Zhang ◽  
...  
Keyword(s):  
Energy Density ◽  
High Power ◽  
Aqueous Battery ◽  
Atomic Engineering ◽  
Power And Energy

Soft Hybrid Scaffold (SHS) Strategy for Realization of Ultrahigh Energy Density of Wearable Aqueous Supercapacitors

2019 ◽  
Vol 32 (4) ◽  
pp. 1907088 ◽  
Author(s):  
Jian Shang ◽  
Qiyao Huang ◽  
Lei Wang ◽  
Yu Yang ◽  
Peng Li ◽  
...  
Keyword(s):  
Energy Density ◽  
Ultrahigh Energy ◽  
Hybrid Scaffold
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