Central Glass International Inc.

San Jose, CA, United States

Central Glass International Inc.

San Jose, CA, United States
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Sanders D.P.,IBM | Coady D.J.,IBM | Yasumoto M.,Central Glass International Inc. | Fujiwara M.,Central Glass International Inc. | And 2 more authors.
Polymer Chemistry | Year: 2014

Functionalized cyclic carbonate monomers were synthesized via a two step route featuring a novel cyclic carbonate intermediate possessing a pendent activated pentafluorophenyl carbonate group (MTC-PFPC). The pentafluorophenyl carbonate of MTC-PFPC was selectively substituted with suitable nucleophiles such as alcohols, amines and thiols generating functionalized cyclic carbonates in moderate to high yield. © 2014 The Royal Society of Chemistry.


McCloskey B.D.,IBM | Bethune D.S.,IBM | Shelby R.M.,IBM | Mori T.,Central Glass International Inc. | And 5 more authors.
Journal of Physical Chemistry Letters | Year: 2012

Quantitative differential electrochemical mass spectrometry (DEMS) is used to measure the Coulombic efficiency of discharge and charge [(e -/O 2) dis and (e -/O 2) chg] and chemical rechargeability (characterized by the O 2 recovery efficiency, OER/ORR) for Li-O 2 electrochemistry in a variety of nonaqueous electrolytes. We find that none of the electrolytes studied are truly rechargeable, with OER/ORR <90% for all. Our findings emphasize that neither the overpotential for recharge nor capacity fade during cycling are adequate to assess rechargeability. Coulometry has to be coupled to quantitative measurements of the chemistry to measure the rechargeability truly. We show that rechargeability in the various electrolytes is limited both by chemical reaction of Li 2O 2 with the solvent and by electrochemical oxidation reactions during charging at potentials below the onset of electrolyte oxidation on an inert electrode. Possible mechanisms are suggested for electrolyte decomposition, which taken together, impose stringent conditions on the liquid electrolyte in Li-O 2 batteries. © 2012 American Chemical Society.


Mccloskey B.D.,IBM | Valery A.,IBM | Valery A.,Grenoble Institute of Technology | Luntz A.C.,IBM | And 7 more authors.
Journal of Physical Chemistry Letters | Year: 2013

Li-air batteries have generated enormous interest as potential high specific energy alternatives to existing energy storage devices. However, Li-air batteries suffer from poor rechargeability caused by the instability of organic electrolytes and carbon cathodes. To understand and address this poor rechargeability, it is essential to elucidate the efficiency in which O 2 is converted to Li2O2 (the desired discharge product) during discharge and the efficiency in which Li2O 2 is oxidized back to O2 during charge. In this Letter, we combine many quantitative techniques, including a newly developed peroxide titration, to assign and quantify decomposition pathways occurring in cells employing a variety of solvents and cathodes. We find that Li2O 2-induced electrolyte solvent and salt instabilities account for nearly all efficiency losses upon discharge, whereas both cathode and electrolyte instabilities are observed upon charge at high potentials. © 2013 American Chemical Society.


PubMed | Belmont Inc., IBM and Central Glass International Inc.
Type: Journal Article | Journal: The journal of physical chemistry letters | Year: 2015

Quantitative differential electrochemical mass spectrometry (DEMS) is used to measure the Coulombic efficiency of discharge and charge [(e(-)/O2)dis and (e(-)/O2)chg] and chemical rechargeability (characterized by the O2 recovery efficiency, OER/ORR) for Li-O2 electrochemistry in a variety of nonaqueous electrolytes. We find that none of the electrolytes studied are truly rechargeable, with OER/ORR <90% for all. Our findings emphasize that neither the overpotential for recharge nor capacity fade during cycling are adequate to assess rechargeability. Coulometry has to be coupled to quantitative measurements of the chemistry to measure the rechargeability truly. We show that rechargeability in the various electrolytes is limited both by chemical reaction of Li2O2 with the solvent and by electrochemical oxidation reactions during charging at potentials below the onset of electrolyte oxidation on an inert electrode. Possible mechanisms are suggested for electrolyte decomposition, which taken together, impose stringent conditions on the liquid electrolyte in Li-O2 batteries.


La Y.-H.,IBM | Sooriyakumaran R.,IBM | Miller D.C.,IBM | Fujiwara M.,Central Glass International Inc. | And 5 more authors.
Journal of Materials Chemistry | Year: 2010

New polyamide thin film composite membranes were prepared by interfacial polymerization of hexafluoroalcohol (HFA)-containing aromatic diamine and trimesoyl chloride (TMC) on a porous polysulfone support. The surface properties of the resulting membranes were characterized by water contact angle, XPS, and SEM. Additionally, the desalination separation performance was evaluated by the cross-flow filtration of 2000 ppm NaCl solution. Water contact angle and XPS analyses indicated that the HFA-containing polyamide membrane is relatively hydrophobic at neutral conditions but becomes hydrophilic at basic conditions due to ionization of the HFA groups, so we refer to this group as an "ionizable hydrophobe" or "i-phobe". The membrane showed strongly pH-dependent reverse osmosis behavior with enhanced performance (high water flux and high salt rejection) at high pH (ca. 10). Both the electron withdrawing nature and the steric bulkiness of the HFA functionality are also advantageous in protecting the polyamide membrane from chlorine attack. Based upon NMR studies of model polymers (linear polyamides with and without the HFA functionality) and the membrane performance measured before and after chlorine exposure, the HFA-containing polyamide has improved chlorine stability compared to the reference polyamide made from m-phenylenediamine and TMC. © 2010 The Royal Society of Chemistry.


Sanders D.P.,IBM | Sundberg L.K.,IBM | Fujiwara M.,Central Glass International Inc. | Terui Y.,Central Glass International Inc. | Yasumoto M.,Central Glass International Inc.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2010

Fluoroalcohol-containing materials have found considerable use in 193 nm immersion topcoat and topcoat-free immersion resist materials due to their good water contact angles and base-dissolution properties. Trifluoromethanesulfonamide-containing materials are another alternative which have been explored for use in 193 nm photoresist and immersion topcoat applications; however, fluorosulfonamide materials have suffered from issues such as low water contact angles. In this paper, we report the synthesis of a series of fluorosulfonamide-containing methacrylate materials with water contact angle and base dissolution performance that rivals or exceeds that of comparable fluoroalcohol-based materials. © 2010 Copyright SPIE - The International Society for Optical Engineering.


Sanders D.P.,IBM | Fukushima K.,IBM | Coady D.J.,IBM | Nelson A.,IBM | And 3 more authors.
Journal of the American Chemical Society | Year: 2010

An improved two-step synthetic route to functionalized cyclic carbonate monomers that features a novel cyclic carbonate intermediate with an active pentafluorophenyl ester group (MTC-OPhF 5) has been developed. The versatile pentafluorophenyl ester intermediate can be synthesized on the gram to kilogram scale in one high-yielding step and is easy to store and handle on the benchtop. The active pentafluorophenyl ester of MTC-OPhF 5 is amenable to further substitution with suitable nucleophiles such as alcohols and amines to generate functionalized cyclic carbonates in high yields. The substitution reaction is tolerant of a wide variety of functionalities, including various hydrophobic and hydrophilic groups, reactive functionalities (via thiol-ene click chemistry or alkyl halides), and protected acids, alcohols, thiols, and amines. In view of the ever-increasing need for biodegradable and biocompatible polymers, this new methodology provides a simple and versatile platform for the synthesis of new and innovative materials. © 2010 American Chemical Society.


Kang S.J.,IBM | Mori T.,Central Glass International Inc. | Suk J.,Korea Research Institute of Chemical Technology | Kim D.W.,Korea Research Institute of Chemical Technology | And 3 more authors.
Journal of Materials Chemistry A | Year: 2014

We demonstrate a facile but very effective approach to improve the cycling efficiency of metallic lithium electrodes by controlling the pore morphology of separators. We employed anodized porous alumina as the model nanoporous separator and demonstrated the improvement of cycle efficiency of lithium electrodes in lithium-oxygen cells. 2014 This journal is © the Partner Organisations.


Kang S.J.,IBM | Mori T.,Central Glass International Inc. | Narizuka S.,Central Glass International Inc. | Wilcke W.,IBM | Kim H.-C.,IBM
Nature Communications | Year: 2014

Carbon has unfaired advantages in material properties to be used as electrodes. It offers a low cost, light weight cathode that minimizes the loss in specific energy of lithium-oxygen batteries as well. To date, however, carbon dioxide evolution has been an unavoidable event during the operation of non-aqueous lithium-oxygen batteries with carbon electrodes, due to the reactivity of carbon against self-decomposition and catalytic decomposition of electrolyte. Here we report a simple but potent approach to eliminate carbon dioxide evolution by using an ionic solvate of dimethoxyethane and lithium nitrate. We show that the solvate leads to deactivation of the carbon against parasitic reactions by electrochemical doping of nitrogen into carbon. This work demonstrates that one could take full advantage of carbon by mitigating the undesired activity. © 2014 Macmillan Publishers Limited. All rights reserved.

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