scholarly journals Innovative Carbon Based Materials for Solid State Hydrogen Storage and Energy Storage

2020 ◽  
Vol 2 (2) ◽  
pp. 39
Keyword(s):  
Hydrogen Storage ◽  
High Performance ◽  
Electrode Materials ◽  
Agricultural Waste ◽  
Thermal Analyses ◽  
Pd Nanoparticles ◽  
Sorption Kinetics ◽  
Charge Transfer Salts ◽  
Desorption Enthalpy ◽  
Storage Properties

Alkali cluster-intercalated fullerides (ACIF) consist of crystalline nanostructures in which positively charged metal clusters are ionically bond to negatively charged C60 molecules, forming charge-transfer salts. These compounds have been recently investigated with renewed interest, appearing as a novel class of materials for hydrogen storage, thanks to their proven capability to uptake reversibly high amounts of hydrogen via a complex chemisorption mechanism. In this presentation, after a short summary on the hydrogen storage topic, the synthesis, the structural investigation, and the hydrogen storage properties of Li, Na, and mixed Li-Na clusters intercalated fullerides belonging to the families NaxLi12-xC60 (0 ≤ x ≤ 12) and NaxLi6-xC60 (0 ≤ x ≤ 6) will be presented. By manometric and thermal analyses, it has been proved that C60 covalently binds up to 5.5 wt% H2 at moderate temperature and pressure, thanks to the catalytic effect of the intercalated alkali clusters. Moreover, the destabilizing effect of Na in the co-intercalated NaxLi6-xC60 compounds leads to an improvement of the hydrogen-sorption kinetics by about 70%, linked to a decrease in the desorption enthalpy from 62 to 44 kJ/mol H2. The addition of Pt and Pd nanoparticles to Li fullerides increases up to 5.9 wt% H2 the absorption performances and of about 35 % the absorption rate. The ammonia storage properties of Li6C60 have also been investigated, resulting in quite appealing. Being the price of C60 quite high, cheaper C based materials are under examination. Porous biochar from agricultural waste is giving interesting results as electrode materials for high-performance supercapacitors.

Effect of Na3FeF6 catalyst on the hydrogen storage properties of MgH2

2016 ◽  
Vol 45 (16) ◽  
pp. 7085-7093 ◽  
Author(s):  
N. N. Sulaiman ◽  
N. S. Mustafa ◽  
M. Ismail
Keyword(s):  
Activation Energy ◽  
Hydrogen Storage ◽  
Sorption Kinetics ◽  
Hydrogen Storage Properties ◽  
Storage Properties

The MgH2 + 10 wt% Na3FeF6 composite resulted in both a reduced dehydrogenation temperature and enhanced sorption kinetics compared to the undoped MgH2 sample. The activation energy for the decomposition of the as-milled MgH2 was 167.0 kJ mol−1 and this value decreased to 75.0 kJ mol−1 after the addition of 10 wt% Na3FeF6 (a reduction by about 92.0 kJ mol−1).

Metal@COFs: Covalent Organic Frameworks as Templates for Pd Nanoparticles and Hydrogen Storage Properties of Pd@COF-102 Hybrid Material

2012 ◽  
Vol 18 (35) ◽  
pp. 10848-10856 ◽  
Author(s):  
Suresh Babu Kalidindi ◽  
Hyunchul Oh ◽  
Michael Hirscher ◽  
Daniel Esken ◽  
Christian Wiktor ◽  
...  
Keyword(s):  
Hydrogen Storage ◽  
Hybrid Material ◽  
Pd Nanoparticles ◽  
Covalent Organic Frameworks ◽  
Hydrogen Storage Properties ◽  
Storage Properties

scholarly journals The relationship between crystalline disorder and electronic structure of Pd nanoparticles and their hydrogen storage properties

RSC Advances ◽  
2019 ◽  
Vol 9 (37) ◽  
pp. 21311-21317 ◽  
Author(s):  
Okkyun Seo ◽  
Jaemyung Kim ◽  
Akhil Tayal ◽  
Chulho Song ◽  
L. S. R. Kumara ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Hydrogen Storage ◽  
Coordination Number ◽  
Pd Nanoparticles ◽  
Hydrogen Storage Properties ◽  
Surface Part ◽  
High Degree ◽  
The Relationship ◽  
Storage Properties

Smaller Pd nanoparticles have a high degree of disordering and a lower coordination number on the surface part, which causes a change in electronic structure to have different hydrogen storage properties.

scholarly journals Novel Bimetallic Tin-Manganese Oxides/Carbon Nanotube Nanocomposite and Their Charge Storage Properties

2014 ◽  
Vol 75 (1) ◽  
Author(s):  
Ir. Dr Ng Kok Chiang ◽  
Ms. Siew Shee Lim ◽  
Dr Chuang Peng
Keyword(s):  
High Performance ◽  
Manganese Oxides ◽  
Electrode Materials ◽  
Electronic Conductivity ◽  
Synergetic Effect ◽  
Charge Storage ◽  
X Ray Diffraction ◽  
Transmission Electron ◽  
Transport Of Ions ◽  
Storage Properties

The synthesis of CNTs/(Sn+Mn)Ox nanocomposites were first attempted through combining the hydro-oxidation of SnCl2 to SnO2 and the reduction of KMnO4 to MnO2 onto CNTs in this work. The reducing presence of SnCl2 accelerated the deposition of MnO2 from 7 days to a day. Subsequently, CNTs/(Sn+Mn)Ox nanocomposites were characterised by X-ray diffraction, scanning and transmission electron microscopy, cyclic voltammetry, and galvanostatic charge-discharge. These microstructure and electrochemical results indicated that this nanocomposite showed synergetic effect in term of specific capacitance, charge storage capacities and exceptional cycling stability. All these enhanced electrochemical properties were attributed to increased surface area, increased utilisation of co-deposited cassiterite-type SnO2 nanoparticulates and birnessite MnO2 monolayer. Additionally, their improved electronic conductivity facilitated better mass transport of ions during charging and discharging process. Based on the findings above, CNTs/(Sn+Mn)Ox nanocomposite will be served as promising and affordable positive electrode materials for high performance supercapacitors.

Interpenetrating Gels as Conducting/Adhering Matrices Enabling High-Performance Silicon Anodes

2021 ◽  
Author(s):  
Tingting Xia ◽  
Chengfei Xu ◽  
Pengfei Dai ◽  
Xiaoyun Li ◽  
Riming Lin ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Electrode Materials ◽  
Three Dimensional ◽  
Electrochemical Energy Storage ◽  
Active Materials ◽  
Silicon Anodes ◽  
Weak Binding ◽  
Binding Forces

Three-dimensional (3D) conductive polymers are promising conductive matrices for electrode materials toward electrochemical energy storage. However, their fragile nature and weak binding forces with active materials could not guarantee long-term...

3D hierarchical porous N-doped carbon quantum dots/vanadium nitride hybrid microflowers as a superior electrode material toward high-performance asymmetric capacitive deionization

2021 ◽  
Author(s):  
Jingxuan Zhao ◽  
Zhibo Zhao ◽  
Yang Sun ◽  
Xiangdong Ma ◽  
Meidan Ye ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Electrode Material ◽  
High Performance ◽  
Carbon Nanomaterials ◽  
Electrode Materials ◽  
Carbon Quantum Dots ◽  
Vanadium Nitride ◽  
Capacitive Deionization ◽  
Hierarchical Porous

Taking into account of time-confusing preparation processing and unsatisfied desalination capacity of carbon nanomaterials, exploring efficient electrode materials remains a great challenge for practical capacitive deionization (CDI) application. In this...

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