Echem Newsletter - Fall 2015

Posted by gamry on November 16, 2015

Gamry Instruments Echem Newsletter
The New Interface 5000 Potentiostat
We are pleased to introduce a new potentiostat designed for the energy researcher doing single cell measurements.

The new Interface 5000 Potentiostat 
The Interface 5000 gives you the ability to do your usual experiments such as charging and discharging but also includes EIS capabilities with 99% accuracy down to 150 μΩ.

Download the  Interface 5000 Brochure 
 
Gamry Instruments Echem Newsletter
New Application Note
Understanding the Specifications of your Potentiostat

Simplified schematic of a potentiostat
The purpose of this note is to help you better understand the functionality of potentiostats. Various parameters that are typically listed in specification sheets of potentiostats are explained. In addition, it is shown which parameters are more relevant for specific applications and where you should pay attention.

Read Complete Application Note and Download in PDF Format 
Gamry Instruments Echem Newsletter
Events & Happenings
Complimentary Exhibit Badge for MRS Boston
2015 MRS Fall Meeting & Exhibit

The 2015 MRS Fall Meeting and Exhibit will be held in Boston, Massachusetts. All technical sessions and non-technical events will be held at the Hynes Convention Center and adjacent Sheraton Boston Hotel.

Gamry will be an exhibitor at Booth #804 and would like to invite you to receive a complimentary badge to the exhibit.    

Download the reservation form, and return to MRS by November 25th - or register on-site at Exhibit Registration Level 2 of the Hynes Convention Center - 900 Boyleston Street - Boston, MA.

Exhibit Hours are:

  • Tues. Dec. 1 ~ 11 am-5:30 pm
  • Wed. Dec. 2 ~ 11 am-5:30 pm
  • Thurs Dec. 3 ~ 10 am-1:30 pm
Gamry Instruments Echem Newsletter
Upcoming Shows & Conferences

January 2016 
February 2016
Echem Gordon Conference
Jan. 10-15 - Ventura, California
CEC Workshop
Feb. 13-14 - Austin TX
Visit Our Website for Complete List
Gamry Instruments Echem Newsletter
Literature Highlight
Initial Investigations on the Use of Coated Nano-Sized Phthalocyanines for Very High Energy Density Rechargeable Lithium-Based Batteries Progress in Cathodes VII

Experimental   
The FePc cells consisted of lithium metal foil as the anode (149 µm thick, 0.970 cm2 cross-sectional area), Celgard with a 1.0 M solution of LiPF6 in ethylene carbonate/dimethyl carbonate (1:1 vol% ratio) electrolyte. and the cathode consisted of 60:30:10 wt% C-FePc, CNT, PEO binder, respectively (~90 µm thick, 1.267 cm2cross-sectional area).


Nano-sized FePc particles were prepared by placing FePc powder, from Aldrich, into a SPEX SamplePrep model 8003 alumina grinding vial with an ½" diameter alumina grinding ball. The jar was then placed inside a SPEX SamplePrep 8000M Mixer/Mill for 200 minutes. A TEM was then used to verify the size of the particles as approximately 25-50 nm; significantly smaller than the 1-2 um size when originally purchased.

The nano-sized FePc particles were then encapsulated with carbon. This was done by mixing the nano-sized FePc and malic acid in a 1:2 wt% ratio in a Pyrex vial and then adding a small amount of toluene to create a slurry. A magnetic stir bar was then placed in the mixture and the slurry was stirred for 2 hours on a stir plate. The vial was then placed inside a vacuum oven, heated to 180 °C, and dried overnight under vacuum and at temperature to form the carbon coated FePc particles.

The CNT particles were prepared by an AFRL in-house procedure to be disclosed in the full paper.

A Hohsen 2032 coin cell crimping machine was used to make the coin cells. All procedures for the making of the coin cells were performed in a dry room with a dew point temperature of ~-40 oC. The coin cells were cycled using a Maccor 3600 system and AC impedance spectroscopy was performed using a Gamry 3000 system.

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