We've detected that you're using an ad content blocking browser plug-in or feature. Ads provide a critical source of revenue to the continued operation of Silicon Investor.  We ask that you disable ad blocking while on Silicon Investor in the best interests of our community.  If you are not using an ad blocker but are still receiving this message, make sure your browser's tracking protection is set to the 'standard' level.


Previous 10 Next 10 
From: DanD5/17/2017 2:56:38 PM
   of 419
Biomass to Graphene production pilot line in China:

Share RecommendKeepReplyMark as Last ReadRead Replies (1)

To: DanD who wrote (370)5/17/2017 3:13:02 PM
From: DanD
   of 419
"The production line’s annual capacity is said to be five tons and is expected to increase to 300 tons."

Share RecommendKeepReplyMark as Last Read

From: DanD5/21/2017 4:19:45 PM
   of 419
Researchers develop an efficient and healthy laser-induced graphene foam lighting device

May 19, 2017

Band gap
Technical / Research

Researchers from the Institute of low temperature and structure research in Wroclaw, Poland, developed a new efficient white light source that uses graphene foam excitated by a continuous-wave laser. The laser opens up a bandgap in graphene which results in light emission that ranges from 360nm (UV) or 405nm (visible) to 980nm-1064nm (near-infrared).

The researchers say that the light spectrum of this device is similar to the spectrum of the sun which is better than current light sources such as LEDs that offer light spectrum with strong peaks (the main problem is the strong blue light emission in LED lighting). This design can achieve a high efficiency (over 200 lm/W), high color rendering index (CRI > 99) and a broadband warm white color. The lifetime depends on the laser, which can be over 10,000 hours.

Graphene has a bright future in the lighting and display industries, for an in-depth study of graphene in these markets check out our market report here.

Share RecommendKeepReplyMark as Last Read

From: DanD5/21/2017 4:56:06 PM
   of 419
Graphene-nanotube hybrid boosts lithium metal batteriesMay 18, 2017

Lithium metal coats the hybrid graphene and carbon nanotube anode in a battery created at Rice University. The lithium metal coats the three-dimensional structure of the anode and avoids forming dendrites. Credit: Tour Group/Rice UniversityRice University scientists have created a rechargeable lithium metal battery with three times the capacity of commercial lithium-ion batteries by resolving something that has long stumped researchers: the dendrite problem.

Read more at:

Share RecommendKeepReplyMark as Last Read

From: DanD5/21/2017 5:00:12 PM
1 Recommendation   of 419
Floating graphene cooks up clean water

Graphene aerogel converts sunlight into heat to produce water vapour at room temperature

A sunlight-harvesting graphene film can produce steam without boiling the water. The material, which has been made by Chinese scientists, could convert sea or wastewater into drinking water in places where fuel or access to electricity is limited.

Desalinating seawater to make drinking water usually means boiling it, and then collecting and condensing the steam. Heating water to its boiling point, however, requires a great deal of energy either in the form of fuel or electricity. There are solar stills that desalinate water using only sunlight, but they’re slow and not always efficient enough to provide sufficient drinking water for a person’s daily needs.

Xianbao Wang and colleagues from Hubei University have now made a graphene aerogel film capable of producing water vapour at room temperature using only sunlight. The aerogel floats on the surface, where it heats up only a small section of the water column, ‘while the temperature of the bulk water is far below the boiling point’, as Wang explains.

Source: American Chemical Society

The researchers tested how the addition of different materials affected the heating of water in simulated sunlight, including reduced graphene oxide (rGO), graphene oxide (GO), graphene oxide aerogel membrane (GOAM) and the graphene aerogel (GA) that performed best of all

Under simulated sunlight, the aerogel could heat up 100ml of water to 45°C – 13°C higher than water without the aerogel. The material’s porous structure pumps the generated steam away from the surface, allowing water to evaporate 13 times faster than it would without the aerogel.

While other steam-generating materials are based on expensive raw materials such as gold, the basis for Wang’s aerogel is powdered graphite – a cheap and widely available resource. ‘In the context of solar steam generation, the current work has a major contribution in fabricating an efficient sunlight absorber in a simple method, which is scalable,’ comments Satoshi Ishii, a photonics nanoengineering researcher at the National Institute for Materials Science in Japan.

Generating solar steam with the graphene aerogel could be more efficient than using electricity from a photovoltaic cell. ‘The efficiencies of commercial photovoltaic cells are 10–20%, such that the efficiencies of generating steam using photovoltaic cells cannot exceed 20%,’ explains Ishii. Wang’s floating graphene has an efficiency of 54%, reaching up to 83% under focused sunlight.

However, if the material is to be used in a desalination device, Wang’s team will need to improve the material’s toughness – it is easily broken when picked up. ‘I do not see fundamental difficulties in bringing the current technology into real-life applications, although much more feasibility studies should be done,’ adds Ishii.

ReferencesY Fu et al, ACS Sustainable Chem. Eng., 2017, DOI: 10.1021/acssuschemeng.6b03207

Share RecommendKeepReplyMark as Last Read

From: DanD5/21/2017 5:10:33 PM
   of 419
Talga reports impressive concrete strength test results using its graphene

May 21, 2017

Australia-based technology minerals company, Talga Resources, recently announced impressive initial concrete prototype strength results from trials undertaken at the commercial concrete/cement laboratory of Betotech Baustofflabor in Germany.

Graphene and graphite enhanced cement and concrete are key priority product targets for Talga. Concrete test prototypes were formulated with Talga graphene and graphite additives combined with a European industry cement and aggregate mixture. Results from the trial showed significant increases, about 26% in flexural strength and 14% in compressive strength, using Talga materials over reference concrete at 28 days cure time.

Further optimization of the formulation is planned along with a larger range of performance tests including abrasion, shrinkage and permeability, among other tests. Electrical conductivity tests are also underway. Talga will continue to progress its product and commercialization strategy in the construction sector using these prototype test results as the catalyst to initiate joint development programs with global suppliers.

In September 2016, Zenyatta Ventures announced that it has signed a collaboration agreement with Larisplast, an Israeli business that specializes in the field of concrete admixtures. Zenyatta and Larisplast have both received grant funding from the Canada-Israel Industrial R&D Foundation under the Ontario-Israel Collaboration Program to further test the effect of adding graphene generated from Zenyatta’s Albany graphite to concrete on a pilot scale.

Share RecommendKeepReplyMark as Last Read

From: DanD5/24/2017 11:41:36 AM
   of 419
What’s Up with Graphene Stocks? Remember Graphene?MAY 19, 2017 BY NANALYZE 4 COMMENTS

Over the past 4 years we’ve dedicated 27 articles to educating investors about “the graphene industry” and so far, we have to say it’s been a bigger disappointment than carbon nanotubes, which were also expected to change the world. Graphene stocks just haven’t performed leaving us wondering if graphene will ever live up to its expectations.


Share RecommendKeepReplyMark as Last ReadRead Replies (1)

From: vitalremains5/27/2017 1:08:32 AM
   of 419
From Mason Graphite most recent financials:
On October 28, 2016, Group NanoXplore Inc. completed a non-brokered private placement of 125,068 Class A common shares for gross proceeds of $2,255,000 of which Mason Graphite purchased 55,463 Class A common shares for gross proceeds of $1,000,000. After giving effect to the financing, Mason Graphite holds a 32% interest (31% prior) in NanoXplore.

More Corporate Video:

Share RecommendKeepReplyMark as Last ReadRead Replies (2)

To: vitalremains who wrote (377)5/27/2017 1:14:36 AM
From: vitalremains
1 Recommendation   of 419
Mason Graphite 6-month chart...trades in USA on OTCQX under symbol "MGPHF" (main Canadian listing has LLG ticker on Venture Exchange)

Share RecommendKeepReplyMark as Last ReadRead Replies (1)

From: DanD6/2/2017 5:50:31 PM
   of 419
Talga talking up its graphite to graphene video:

Share RecommendKeepReplyMark as Last ReadRead Replies (1)
Previous 10 Next 10