Open Journal of Energy Efficiency
Vol.06 No.03(2017), Article ID:78102,7 pages
10.4236/ojee.2017.63005

Comparing of Hydrogen On-Board Storage by the Largest Car Companies, Relevance to Prospects for More Efficient Technologies

Yu. S. Nechaev1*, V. G. Makotchenko2, M. B. Shavelkina3, M. Yu. Nechaev1, A. Veziroglu4, T. N. Veziroglu4

1I. P. Bardin Central Research Institute for Ferrous Metallurgy, Dpt. G. V. Kurdyumov Institute of Metals Science and Physics, Moscow, Russia

2A. V. Nikolaev Institute of Inorganic Chemistry, The Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia

3The Joint Institute for High Temperature, The Russian Academy of Sciences, Moscow, Russia

4International Association for Hydrogen Energy, Miami, FL, USA

Copyright © 2017 by authors and Scientific Research Publishing Inc.

This work is licensed under the Creative Commons Attribution International License (CC BY 4.0).

http://creativecommons.org/licenses/by/4.0/

Received: April 3, 2017; Accepted: July 29, 2017; Published: August 1, 2017

ABSTRACT

It presented a comparative consideration of General Motors long-term activities on the current subject of fuel-cell-powered electric vehicles vs Toyota Mirai recent results, relevant to prospects on more efficient and safe technologies of the hydrogen on-board storage. It also presented a call on the project International cooperation. The main aim of this paper is to attract attention of General Motors, Toyota and/or other large car companies to a real possibility of developing and using, in the nearest future, of the break-through hydrogen on-board storage technology based on the solid H2 intercalation into graphite nanostructures.

Keywords:

GM’ Activities vs Toyota Mirairesults, Prospects on Developing of a Break-Through Hydrogen On-Board Storage Technology, The Solid H2 Intercalation into Graphite Nanostructures, Call on the Project International Cooperation

1. Introduction

In the connection with the intensive working out of the current subject of fuel-cell-powered electric vehicles in different countries, a comparative consideration is expedient of General Motors long-term (from 1964 up to nowadays [1] ) activities vs Toyota Mirai recent results (from 1993 up to nowadays [2] ), relevant to prospects on more efficient technologies of the hydrogen on-board storage. It is necessary to emphasize that Toyota and General Motors, during the long-term period, have been among the largest car companies in the World, and they have also been in a perpetual rivalry.

2. About Toyota Mirairecent Results

As is noted in [2] [3] , the automaker has been selling the Toyota Mirai in Japan since December 2014, but began sales in California in October 2015―marking the first time hydrogen-powered vehicles were sold in the United States. A Toyota spokesperson told Tech Insider that Toyota plans to sell 30,000 a year worldwide by 2020.

Toyota Mirai has the following characteristics [2] [3] :

1) power output 153 HP (114 kW);

2) two carbon fiber high-pressure tanks for hydrogen on-board storage;

3) fuel compressed H2 gas maximum filling pressure 87.5 MPa;

4) normal operating pressure 70 MPa;

5) hydrogen storage density (capacity) 5.7 weight %;

6) hydrogen storage mass about 5.0 kg;

7) the driving range at 312 miles.

3. About General Motors Long-Term Activities and Recent Results

Recently, GM has delivered fuel cell military vehicle-the Colorado ZH2, along with the US Army Tank Automotive Research, Development and Engineering Center [1] [3] [4] . It is the most extreme off-road-capable fuel-cell-powered electric vehicle ever from GM. The Colorado ZH2 fuel cell vehicle is undergoing the extreme military testing in 2017 [5] .

GM says [4] that the test vehicle would get a bit less than 200 miles of driving range from the fuel cell. But over time, with newer fuel cells, the range could double. Some of the Colorado gear GM is using isn’t the absolute latest technology, but that’s intentional, because it has already been certified and GM wants to spend the 2017 year testing, not waiting for approvals then hasty testing. Built on a modified Chevrolet Colorado chassis, the vehicle contains several technologies that may one day change the auto industry [3] [4] [5] .

4. On Solving the Current Problem of the Effective and Safe Hydrogen On-Board Storage

Despite the above noted Toyota and General Motors results [1] [3] [4] [5] , along with results of other large car companies [2] , the problem of the effective and safe hydrogen on-board storage has yet been under consideration of a number of scientists, for instance, [6] - [12] .

In this connection, it is expedient to attract attention of both the scientists and the car companies to a real possibility of developing of a break-through hydrogen on-board storage technology of intercalation of solid molecular hydrogen of a high density into graphite nanofibers. It could be one of the problem solution ways.

The technology physics has been developed in [13] [14] [15] [16] [17] on the basis of the thermodynamic analysis [18] [19] of a large massive of the related experimental and theoretical data, including [20] - [31] ones.

A related microphotograph of hydrogenated graphite nanofibers is shown in Figure 1 (taken from [13] [15] ). A comparison of this possible break-through technology [13] [14] [15] [16] [17] with the known ones is presented in Figure 2 (taken from [13] [15] ). Hence, a related International research project (see the next Item) seems rather expedient.

5. Synopsis of the International Research Project “Thermodynamic Aspects of Hydrogen Sorption and Intercalation in Nanostructured Carbon-Based Materials, Relevance for Clean Energy Applications”

The project is devoted to the definition of thermodynamic characteristics and

Figure 1. Micrograph of hydrogenated graphite nanofibers (GNFs) with Pd-catalyst (hydrogenated at 300 K and initial pressure of P(H2gas) ≈ 8 MPa) after release from them, at 300 K for 10 min {according to data [21] }, of the intercalated solid H2 nanophase (17 mass. %) of a high density of ρH2≈ 0.5 g/cm3 (analysisresults [14] [15] [16] [17] ). The arrows in the picture indicate some of the slit-like closed nanopores of the lens shape, where the solid H2 intercalated nanophase (under pressure of ~50 GPa) was localized (according to [14] [15] [16] [17] ). Such a pressure level can be also evaluated by the consideration of the material deformation and the necessary stresses for forming such lens shape closed nanopores {at the expense of the energy of association of penetrating (into the nanopores) hydrogen atoms to molecules “captured” inside the nanopores [14] [15] [16] [17] }. It may be considered as an extraordinary manifestation of both the Kurdjumov-like effect, and the spillover effect [14] [16] .

Figure 2. It is shown (in the face of known achievements) US DOE system targets for 2010 and 2015, relevant to gravimetric and volumetric hydrogen on-board storage densities. The large red circle is related to the possible break-through technology [13] [14] [15] [16] [17] of the solid molecular hydrogen intercalation into the hydrogenated separate graphite nanofibers (see Figure 1).

the disclosure of the atomic mechanisms of processes of hydrogen sorption and intercalation in expanded graphite and graphene materials. It is related to the current unresolved problems of the clean energy, including the problem of a compact and safe storage of hydrogen in eco-cars [6] - [17] .

In the project three methods of synthesis of carbon nanostructures will be used: 1) a method of destructive thermal decomposition of some intercalated in graphite compounds based on polyfluoride carbon; 2) plasma jet method, based on the pyrolysis of carbon-containing materials in a DC plasma torch; 3) the method of chemical vapor deposition.

The conventional experimental techniques will be used for the identification and the characterization of the synthesized nanostructures (X-ray diffraction, thermogravimetry, electron microscopy, Raman spectroscopy, etc.).

For obtaining the project research results, the following will be used: 1) the unique technology of hydrogenation of carbon materials and nanomaterials in a gas at a pressure of molecular hydrogen up to 30 MPa and temperatures up to 870 K, as well as the technology of hydrogenation by superthermal hydrogen atoms; 2) methods of thermogravimetric analysis and thermal desorption analysis (with using the original developments [18] [19] ) of hydrogenated materials and nanomaterials; 3) approaches and methods [14] - [19] of thermodynamic analysis of the experimental data obtained by the project participants, and comparison of the test results with the related theoretical and experimental data of other researchers to reveal the atomic mechanisms of the hydrogensorption and intercalation processes.

By using these methods, it will be determined the thermodynamic characteristics of hydrogen sorption (hydrogen concentrations, the equilibrium constants, the standard enthalpy changes, the activation volumes, the rate constants, the activation energies) and disclosed the atomic mechanisms of sorption for different hydrogen states in the expanded graphite (the first time) and graphene materials.

The further research of the physics [13] [14] [15] [16] [17] of intercalation of the solid, liquid or gaseous molecular hydrogen of a high density in the carbon nanostructures will be held.

At the first time, the experimental study of the possibility of intercalation of the high-density molecular hydrogen in compacted expanded graphite and multilayer graphene will be held.

The development of prospects of the advance technology of effective and safe storage of intercalated high density hydrogen in carbon nanomaterials and their urgent in the field of hydrogen energy applications will be determined.

6. Conclusion

There are reasons, including [13] [25] study results, to attract attention of General Motors, Toyota and/or other large car companies to a real possibility of developing and using, in the nearest future, of the break-through hydrogen on- board storage technology (Figure 1 and Figure 2).

The further studies of the physics [14] [15] [16] [17] of such a possible unique technology are expedient, may be, within the project International cooperation.

Cite this paper

Nechaev, Yu.S., Makotchenko, V.G., Shavelkina, M.B., Ne- chaev, M.Yu., Veziroglu, A. and Veziroglu, T.N. (2017) Comparing of Hydrogen On- Board Storage by the Largest Car Companies, Relevance to Prospects for More Efficient Technologies. Open Journal of Energy Efficiency, 6, 73-79. https://doi.org/10.4236/ojee.2017.63005

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