scholarly journals Binder-Free α-MnO2 Nanowires on Carbon Cloth as Cathode Material for Zinc-Ion Batteries

2020 ◽  
Vol 21 (9) ◽  
pp. 3113 ◽  
Author(s):  
Ryan Dula Corpuz ◽  
Lyn Marie De Juan-Corpuz ◽  
Mai Thanh Nguyen ◽  
Tetsu Yonezawa ◽  
Heng-Liang Wu ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Low Cost ◽  
Hydrothermal Process ◽  
Zinc Ion ◽  
Carbon Cloth ◽  
Zinc Deposition ◽  
Elemental Analyses ◽  
One Step ◽  
Binder Free ◽  
Mno2 Nanowires

Recently, rechargeable zinc-ion batteries (ZIBs) have gained a considerable amount of attention due to their high safety, low toxicity, abundance, and low cost. Traditionally, a composite manganese oxide (MnO2) and a conductive carbon having a polymeric binder are used as a positive electrode. In general, a binder is employed to bond all materials together and to prevent detachment and dissolution of the active materials. Herein, the synthesis of α-MnO2 nanowires on carbon cloth via a simple one-step hydrothermal process and its electrochemical performance, as a binder-free cathode in aqueous and nonaqueous-based ZIBs, is duly reported. Morphological and elemental analyses reveal a single crystal α-MnO2 having homogeneous nanowire morphology with preferential growth along {001}. It is significant that analysis of the electrochemical performance of the α-MnO2 nanowires demonstrates more stable capacity and superior cyclability in a dimethyl sulfoxide (DMSO) electrolyte ZIB than in an aqueous electrolyte system. This is because DMSO can prevent irreversible proton insertion as well as unfavorable dendritic zinc deposition. The application of the binder-free α-MnO2 nanowires cathode in DMSO can promote follow-up research on the high cyclability of ZIBs.

scholarly journals Binder-Free Centimeter-Long V2O5 Nanofibers on Carbon Cloth as Cathode Material for Zinc-Ion Batteries

Energies ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 31 ◽  
Author(s):  
Lyn Marie De Juan-Corpuz ◽  
Ryan Dula Corpuz ◽  
Anongnat Somwangthanaroj ◽  
Mai Thanh Nguyen ◽  
Tetsu Yonezawa ◽  
...  
Keyword(s):  
Cathode Material ◽  
Low Cost ◽  
Hydrothermal Process ◽  
Active Material ◽  
Current Collector ◽  
Zinc Ion ◽  
Carbon Cloth ◽  
One Step ◽  
Binder Free ◽  
Novel Strategy

Recently, rechargeable aqueous zinc-ion batteries (AZBs) have attracted extensive interest due to their safety, abundance, low cost, and low toxicity. However, aqueous electrolytes require a polymeric binder to prevent dissolution of the active material in addition to its binding properties. This study highlights binder-free, centimeter long, single-crystal, V2O5 nanofibers (BCS-VONF) on carbon cloth, as the cathode material for AZBs synthesized via a simple one-step hydrothermal process. BCS-VONF in 3.0 M Zn(OTf)2 exhibit promising electrochemical performance with excellent capacity retention. Even in the absence of a binder, BCS-VONF were found to be very stable in 3.0 M Zn(OTf)2. They will not yield to the dissolution and detachment of the active material on the current collector. The novel strategy described in this study is an essential step for the development of BCS-VONF on carbon cloth, as a promising cathode material for AZBs.

scholarly journals Simple synthesis of ZnO nanoparticles on N-doped reduced graphene oxide for the electrocatalytic sensing of l-cysteine

RSC Advances ◽  
2017 ◽  
Vol 7 (56) ◽  
pp. 35004-35011 ◽  
Author(s):  
Suling Yang ◽  
Gang Li ◽  
Chen Qu ◽  
Guifang Wang ◽  
Dan Wang
Keyword(s):  
Graphene Oxide ◽  
Low Temperature ◽  
Reduced Graphene Oxide ◽  
Zno Nanoparticles ◽  
Low Cost ◽  
Hydrothermal Process ◽  
Simple Synthesis ◽  
Zno Nanoparticle ◽  
Reduced Graphene ◽  
One Step

A new kind of ZnO nanoparticle/N-doped reduced graphene oxide nanocomposite (ZnONPs/N-rGO) was synthesized through a low temperature, low-cost and one step hydrothermal process.

Cellulose Nanocrystals Assisted Preparation of Electrochemical Energy Storage Electrodes

2017 ◽  
Author(s):  
Danny Illera ◽  
Victor Fontalvo ◽  
Humberto Gomez
Keyword(s):  
Energy Storage ◽  
Electrochemical Performance ◽  
Surface Area ◽  
Cellulose Nanocrystals ◽  
Low Cost ◽  
Renewable Energy Sources ◽  
Film Deposition ◽  
One Step ◽  
Film Synthesis ◽  
Storage Technologies

Renewable energy sources demands sustainable energy storage technologies through the incorporation of low-cost and environment-friendly materials. In this regard, cellulose nanocrystals (CN), which are needle-shaped nanostructure derived from cellulose-rich resources, are extracted by sulfuric acid hydrolysis of biomass and used as both template and binder for the construction of electrochemical capacitors electrodes. A composite material is synthetized comprising CN and a conjugated electroactive polymer (CEP) to overcome the electrical insulating properties of cellulose as well as to exploit enhanced electrochemical activity by increased electrode surface-area. A one-step in-situ film synthesis protocol is evaluated by performing simultaneous polymerization and film deposition. The effect of proportion of starting components are evaluated through statistical Response Surface Methodology towards optimizing the electrochemical performance. Depending on the mass proportion of the starting components, a conducting network could be created by surface coating of the CEP on the whiskers during polymerization. Electrochemical measurements suggest an increase in specific surface area by at least a factor of two relative to bare CEP as a consequence of the template role of cellulose. Therefore, adjustment of the proposed one-step synthesis parameters allows tuning the material properties to meet specific application requirements regarding electrochemical performance.

Glycine-assisted evolution of palygorskite via a one-step hydrothermal process to give an efficient adsorbent for capturing Pb(ii) ions

RSC Advances ◽  
2015 ◽  
Vol 5 (117) ◽  
pp. 96829-96839 ◽  
Author(s):  
Zhifang Zhang ◽  
Wenbo Wang ◽  
Yuru Kang ◽  
Li Zong ◽  
Aiqin Wang
Keyword(s):  
Low Cost ◽  
Hydrothermal Process ◽  
Synthetic Materials ◽  
One Step ◽  
Efficient Adsorbent

As the materials of “green 21st century material worlds”, natural silicates have received unprecedented attention by virtue of their abundance, low-cost, stability, and non-toxic and eco-friendly nature compared to other synthetic materials.

Hierarchical three-dimensional NiCo2O4 nanoneedle arrays supported on Ni foam for high-performance supercapacitors

RSC Advances ◽  
2015 ◽  
Vol 5 (32) ◽  
pp. 25304-25311 ◽  
Author(s):  
Jian Wu ◽  
Rui Mi ◽  
Shaomin Li ◽  
Pan Guo ◽  
Jun Mei ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Hydrothermal Method ◽  
High Performance ◽  
Three Dimensional ◽  
Ni Foam ◽  
One Step ◽  
Binder Free

A novel NiCo2O4 nanoneedle arrays with bottom crosslinked nanosheets grew on Ni foam as advanced binder-free electrodes via a facile one-step hydrothermal method followed by annealing in air, which exhibited high electrochemical performance.

Binder-Free Flexible Zinc-Ion Batteries: One-Step Potentiostatic Electrodeposition Strategy Derived Ce Doped-MnO2 Cathode

2021 ◽  
pp. 133387
Author(s):  
Yuanyuan Song ◽  
Jiaming Li ◽  
Rui Qiao ◽  
Xin Dai ◽  
Weitao Jing ◽  
...  
Keyword(s):  
Zinc Ion ◽  
Potentiostatic Electrodeposition ◽  
One Step ◽  
Binder Free

Selenium Defect Boosted Electrochemical Performance of Binder-Free VSe2 Nanosheets for Aqueous Zinc-Ion Batteries

2021 ◽  
Author(s):  
Youcun Bai ◽  
Heng Zhang ◽  
Bin Xiang ◽  
Xinyue Liang ◽  
Jiangyu Hao ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Zinc Ion ◽  
Binder Free

scholarly journals Facile One-Step Dynamic Hydrothermal Synthesis of Spinel LiMn2O4/Carbon Nanotubes Composite as Cathode Material for Lithium-Ion Batteries

Materials ◽  
2019 ◽  
Vol 12 (24) ◽  
pp. 4123 ◽  
Author(s):  
Chaoqi Shen ◽  
Hui Xu ◽  
Liu Liu ◽  
Heshan Hu ◽  
Siyuan Chen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Electrochemical Performance ◽  
Retention Rate ◽  
Hydrothermal Process ◽  
Lithium Ion ◽  
Spinel Limn2o4 ◽  
Excellent Electrochemical Performance ◽  
Specific Discharge ◽  
One Step ◽  
Hydrothermal Approach

Nano-sized spinel LiMn2O4/carbon nanotubes (LMO/CNTs) composite is facilely synthesized via a one-step dynamic hydrothermal approach. The characterizations and electrochemical measurements reveal that LiMn2O4 particles with narrow size distribution are well dispersed with CNTs in the composite. The LMO/CNTs nanocomposite with 5 wt % CNTs displays a high specific discharge capacity of 114 mAh g−1 at 1C rate, and the retention rate after 180 cycles at room temperature reaches 94.5% in the potential window of 3.3 to 4.3 V vs. Li/Li+. Furthermore, the electrochemical performance of the composite with 5 wt % CNTs at elevated temperature (55 °C) is also impressive, 90% discharging capacity could be maintained after 100 cycles at 1C. Such excellent electrochemical performance of the final product is attributed to the content of CNTs added in the hydrothermal process and small particle size inherited from pretreated MnO2 precursor.

scholarly journals ZnO Nano-Flowers Assembled on Carbon Fiber Textile for High-Performance Supercapacitor’s Electrode

Coatings ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1337
Author(s):  
Qasim Abbas ◽  
Muhammad Sufyan Javed ◽  
Awais Ahmad ◽  
Sajid Hussain Siyal ◽  
Idress Asim ◽  
...  
Keyword(s):  
Carbon Fiber ◽  
High Performance ◽  
Electrode Materials ◽  
Low Cost ◽  
Hydrothermal Process ◽  
Effective Surface Area ◽  
Effective Surface ◽  
Efficient Diffusion ◽  
Binder Free ◽  
Simple Hydrothermal Process

Herein, a crystalline nano-flowers structured zinc oxide (ZnO) was directly grown on carbon fiber textile (CFT) substrate via a simple hydrothermal process and fabricated with a binder-free electrode (denoted as ZnO@CFT) for supercapacitor (SC) utilization. The ZnO@CFT electrode revealed a 201 F·g−1 specific capacitance at 1 A·g−1 with admirable stability of >90% maintained after 3000 cycles at 10 A·g−1. These impressive findings are responsible for the exceedingly open channels for well-organized and efficient diffusion of effective electrolytic conduction via ZnO and CFT. Consequently, accurate and consistent structural and morphological manufacturing engineering is well regarded when increasing electrode materials’ effective surface area and intrinsic electrical conduction capability. The crystalline structure of ZnO nano-flowers could pave the way for low-cost supercapacitors.

Hydrothermally synthesized BiVO4–reduced graphene oxide nanocomposite as a high performance supercapacitor electrode with excellent cycle stability

2018 ◽  
Vol 42 (12) ◽  
pp. 10161-10166 ◽  
Author(s):  
Shibsankar Dutta ◽  
Shreyasi Pal ◽  
Sukanta De
Keyword(s):  
Graphene Oxide ◽  
Synergistic Effect ◽  
Electrochemical Performance ◽  
High Performance ◽  
Hydrothermal Process ◽  
Cycle Stability ◽  
Supercapacitor Electrode ◽  
Reduced Graphene ◽  
Symmetric Supercapacitor ◽  
One Step

A BiVO4/rGO hybrid-based symmetric supercapacitor has been fabricated via a simple one-step hydrothermal process, which shows a synergistic effect towards electrochemical performance with excellent cycle stability.

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