Development of a continuous hydrogen generator fueled by ammonia borane for portable fuel cell applications

Kim, Yongmin; Kim, Yujong; Yeo, Shinyoung; Kim, Kibeom; Koh, Katherine; Seo, Jung Eun; Shin, Soyeon; Choi, Dae Ki; Yoon, Chang Won; Nam, Sangwook

doi:10.1016/j.jpowsour.2012.11.045

Cited by 24 publications

(11 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Section: Methodsmentioning

confidence: 99%

“…Numerical simulations were performed taking into account the mechanism for hydrogen release in ammonia borane.T hermally induced dehydrogenation of AB occurs in three steps,w hich are presented in Table 3. [69] Reaction steps 1a nd 2r elease hydrogen over the range of temperatures studied and are relevant for PEM FCs. TheA Bd ecomposition is an ucleation and growth reaction and can be described by Avrami equations.C hoi et al have previously presented ak inetic model for the decomposition of AB,w hich was used as the basis for the simulations.…”

Section: Simulations Of As Torage Tank With Ab-based Materialsmentioning

confidence: 99%

See 1 more Smart Citation

Ammonia Borane Based Nanocomposites as Solid‐State Hydrogen Stores for Portable Power Applications

et al. 2018

View full text Add to dashboard Cite

Ammonia borane (AB) based nanocomposites are studied with the aim of developing a promising solid‐state hydrogen store that complies with the requirements of a modular polymer electrolyte membrane fuel cell (PEM FC) in a portable power pack system. AB‐carbon nanocomposites (prepared via ball milling or solution‐impregnation) demonstrate improved hydrogen release performance compared to AB itself in terms of onset temperature and hydrogen purity, while maintaining a gravimetric density of more than 5 wt. % H2. The most promising of these materials is an AB‐AC (activated carbon) composite, synthesized via solution impregnation with an optimal dehydrogenation temperature of 96 °C. When combined with an external nickel chloride filter downstream, no evolved gaseous by‐products can be detected above 100 ppb. The feasibility of an AB‐AC storage tank is further investigated using simulations in which the reaction rate and the hydrogen flux is found to be nearly constant as the temperature front propagated from the bottom to the top of the tank after initiation.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: Simulations Of As Torage Tank With Ab-based Materialsmentioning

confidence: 99%

Ammonia Borane Based Nanocomposites as Solid‐State Hydrogen Stores for Portable Power Applications

et al. 2018

View full text Add to dashboard Cite

show abstract

“…[145,146] Evidence of the better prospects of the thermolysiso fN H 3 BH 3 are provided in the references cited in this paragraph.A nother proof is the unmanned aerial vehicle constructed by Nam and co-workers. [147,148] They showed that thermally induced dehydrogenation from a mixture of NH 3 BH 3 and glycol-based chemical promoter is an efficient method for H 2 production at 85-145 8C. Theg eneratorw as coupled to a2 00 W e polymer electrolyte membrane fuel cell, which allowed continuald riving of av ehicle for almost1h.…”

Section: Catalystsmentioning

confidence: 99%

About the Technological Readiness of the H₂ Generation by Hydrolysis of B(−N)−H Compounds

Demirci

2018

Energy Tech

View full text Add to dashboard Cite

At the beginning of the new millennium, hydrolysis of sodium borohydride (NaBH4) was presented as a promising on‐board technology to generate H2 for light‐duty vehicles. Years later, other B(−N)−H compounds (e.g., lithium borohydride (LiBH4) and ammonia borane (NH3BH3)) emerged as attractive alternatives whereas NaBH4 was struggling with several issues jeopardizing its implementation. Actually, efforts in the research and development of H2 generation by hydrolysis of B(−N)−H compounds have been intensive since the advent of NaBH4 almost 20 years ago. There may be a question with respect to this: What is the technological readiness of the promising hydrolytic B(−N)−H compounds? This Review aims at providing relevant elements in response to this question. In the first part, the most mature B(−N)−H compounds are discussed at length. In the second part, a survey of all other candidates is proposed. It is concluded that NaBH4 is the best hydrolytic B(−N)−H compound for marketing on a broad scale, but there are still key challenges to address.

show abstract

“…For instance, Nam and co-workers developed a NH 3 BH 3 -based H 2 generator that is able to feed a 200 W e polymer electrolyte membrane fuel cell powering an unmanned aerial vehicle. 108,109 Thermolysis of NH 3 BH 3 has today a technological readiness level of at least TRL7, i.e. "prototype demonstration in a space environment".…”

Section: Solid-state Hydrogen Storagementioning

confidence: 99%

Sodium borohydride for the near-future energy: a ''rough diamond'' for Turkey

Demirci¹

2018

Turk J Chem

View full text Add to dashboard Cite

Boron-based materials are potential solutions in the field of energy. They have been regarded as hydrogen storage materials, liquid fuels of direct liquid-fed fuel cells (DLFCs), electrolytes of battery, and/or energetic substances.A typical example is sodium borohydride (NaBH 4) . In sodium hydroxide-stabilized aqueous solutions, it is seen as an efficient H 2 generator or a performing fuel of DLFCs. Actually, it plays a wider role; it is also the precursor of several boron-based materials of interest in the field of energy. In other words, it is indirectly considered for other energy applications, i.e. solid electrolytes of all solid-state batteries and hypergolic fuel. De facto sodium borohydride has become a key material in the field of energy. This is discussed in the present article, and it is highlighted that sodium borohydride may be clearly seen as a "rough diamond" for Turkey.

show abstract

Development of a continuous hydrogen generator fueled by ammonia borane for portable fuel cell applications

Cited by 24 publications

References 30 publications

Ammonia Borane Based Nanocomposites as Solid‐State Hydrogen Stores for Portable Power Applications

Ammonia Borane Based Nanocomposites as Solid‐State Hydrogen Stores for Portable Power Applications

About the Technological Readiness of the H₂ Generation by Hydrolysis of B(−N)−H Compounds

Sodium borohydride for the near-future energy: a ''rough diamond'' for Turkey

Contact Info

Product

Resources

About

Development of a continuous hydrogen generator fueled by ammonia borane for portable fuel cell applications

Cited by 24 publications

References 30 publications

Ammonia Borane Based Nanocomposites as Solid‐State Hydrogen Stores for Portable Power Applications

Ammonia Borane Based Nanocomposites as Solid‐State Hydrogen Stores for Portable Power Applications

About the Technological Readiness of the H2 Generation by Hydrolysis of B(−N)−H Compounds

Sodium borohydride for the near-future energy: a ''rough diamond'' for Turkey

Contact Info

Product

Resources

About

About the Technological Readiness of the H₂ Generation by Hydrolysis of B(−N)−H Compounds