Search Results - "More, Karren L."

Thermally Driven Structure and Performance Evolution of Atomically Dispersed FeN4 Sites for Oxygen Reduction by Li, Jiazhan, Zhang, Hanguang, Samarakoon, Widitha, Shan, Weitao, Cullen, David A., Karakalos, Stavros, Chen, Mengjie, Gu, Daming, More, Karren L., Wang, Guofeng, Feng, Zhenxing, Wang, Zhenbo, Wu, Gang

“…FeN4 moieties embedded in partially graphitized carbon are the most efficient platinum group metal free active sites for the oxygen reduction reaction in…”
Get full text

High-Performance Electrocatalysts for Oxygen Reduction Derived from Polyaniline, Iron, and Cobalt by Wu, Gang, More, Karren L., Johnston, Christina M., Zelenay, Piotr

“…The prohibitive cost of platinum for catalyzing the cathodic oxygen reduction reaction (ORR) has hampered the widespread use of polymer electrolyte fuel cells…”
Get full text

Nitrogen‐Coordinated Single Cobalt Atom Catalysts for Oxygen Reduction in Proton Exchange Membrane Fuel Cells by Wang, Xiao Xia, Cullen, David A., Pan, Yung‐Tin, Hwang, Sooyeon, Wang, Maoyu, Feng, Zhenxing, Wang, Jingyun, Engelhard, Mark H., Zhang, Hanguang, He, Yanghua, Shao, Yuyan, Su, Dong, More, Karren L., Spendelow, Jacob S., Wu, Gang

“…Due to the Fenton reaction, the presence of Fe and peroxide in electrodes generates free radicals causing serious degradation of the organic ionomer and the…”
Get full text

Single Cobalt Sites Dispersed in Hierarchically Porous Nanofiber Networks for Durable and High‐Power PGM‐Free Cathodes in Fuel Cells by He, Yanghua, Guo, Hui, Hwang, Sooyeon, Yang, Xiaoxuan, He, Zizhou, Braaten, Jonathan, Karakalos, Stavros, Shan, Weitao, Wang, Maoyu, Zhou, Hua, Feng, Zhenxing, More, Karren L., Wang, Guofeng, Su, Dong, Cullen, David A., Fei, Ling, Litster, Shawn, Wu, Gang

“…Increasing catalytic activity and durability of atomically dispersed metal–nitrogen–carbon (M–N–C) catalysts for the oxygen reduction reaction (ORR) cathode in…”
Get full text

Interfacial Stability of Li Metal–Solid Electrolyte Elucidated via in Situ Electron Microscopy by Ma, Cheng, Cheng, Yongqiang, Yin, Kuibo, Luo, Jian, Sharafi, Asma, Sakamoto, Jeff, Li, Juchuan, More, Karren L, Dudney, Nancy J, Chi, Miaofang

“…Despite their different chemistries, novel energy-storage systems, e.g., Li–air, Li–S, all-solid-state Li batteries, etc., face one critical challenge of…”
Get full text

Core/Shell Pd/FePt Nanoparticles as an Active and Durable Catalyst for the Oxygen Reduction Reaction by Mazumder, Vismadeb, Chi, Miaofang, More, Karren L, Sun, Shouheng

“…We report a unique synthesis of core/shell Pd/FePt nanoparticles (NPs) and their catalysis of the oxygen reduction reaction (ORR). The uniform FePt shell is…”
Get full text

Eliminating dissolution of platinum-based electrocatalysts at the atomic scale by Lopes, Pietro P., Li, Dongguo, Lv, Haifeng, Wang, Chao, Tripkovic, Dusan, Zhu, Yisi, Schimmenti, Roberto, Daimon, Hideo, Kang, Yijin, Snyder, Joshua, Becknell, Nigel, More, Karren L., Strmcnik, Dusan, Markovic, Nenad M., Mavrikakis, Manos, Stamenkovic, Vojislav R.

“…A remaining challenge for the deployment of proton-exchange membrane fuel cells is the limited durability of platinum (Pt) nanoscale materials that operate at…”
Get full text

Control of Architecture in Rhombic Dodecahedral Pt–Ni Nanoframe Electrocatalysts by Becknell, Nigel, Son, Yoonkook, Kim, Dohyung, Li, Dongguo, Yu, Yi, Niu, Zhiqiang, Lei, Teng, Sneed, Brian T, More, Karren L, Markovic, Nenad M, Stamenkovic, Vojislav R, Yang, Peidong

“…Platinum-based alloys are known to demonstrate advanced properties in electrochemical reactions that are relevant for proton exchange membrane fuel cells and…”
Get full text

Excellent Stability of a Lithium-Ion-Conducting Solid Electrolyte upon Reversible Li+/H+ Exchange in Aqueous Solutions by Ma, Cheng, Rangasamy, Ezhiylmurugan, Liang, Chengdu, Sakamoto, Jeffrey, More, Karren L., Chi, Miaofang

“…Batteries with an aqueous catholyte and a Li metal anode have attracted interest owing to their exceptional energy density and high charge/discharge rate. The…”
Get full text

Nanoscale Imaging of Fundamental Li Battery Chemistry: Solid-Electrolyte Interphase Formation and Preferential Growth of Lithium Metal Nanoclusters by Sacci, Robert L, Black, Jennifer M, Balke, Nina, Dudney, Nancy J, More, Karren L, Unocic, Raymond R

“…The performance characteristics of Li-ion batteries are intrinsically linked to evolving nanoscale interfacial electrochemical reactions. To probe the…”
Get full text

Synthesis and Characterization of Multimetallic Pd/Au and Pd/Au/FePt Core/Shell Nanoparticles by Mazumder, Vismadeb, Chi, Miaofang, More, Karren L, Sun, Shouheng

“…Multimetallic dreamcoat: Core/shell nanoparticles of Pd/Au and Pd/Au/FePt were synthesized with palladium (5 nm diameter), a gold shell (1–2 nm), and a FePt…”
Get full text

Multimetallic Core/Interlayer/Shell Nanostructures as Advanced Electrocatalysts by Kang, Yijin, Snyder, Joshua, Chi, Miaofang, Li, Dongguo, More, Karren L, Markovic, Nenad M, Stamenkovic, Vojislav R

“…The fine balance between activity and durability is crucial for the development of high performance electrocatalysts. The importance of atomic structure and…”
Get full text

Ozonated Graphene Oxide Film as a Proton-Exchange Membrane by Gao, Wei, Wu, Gang, Janicke, Michael T., Cullen, David A., Mukundan, Rangachary, Baldwin, Jon K., Brosha, Eric L., Galande, Charudatta, Ajayan, Pulickel M., More, Karren L., Dattelbaum, Andrew M., Zelenay, Piotr

“…Graphene oxide (GO) contains several chemical functional groups that are attached to the graphite basal plane and can be manipulated to tailor GO for specific…”
Get full text

Multimetallic Au/FePt3 Nanoparticles as Highly Durable Electrocatalyst by Wang, Chao, van der Vliet, Dennis, More, Karren L, Zaluzec, Nestor J, Peng, Sheng, Sun, Shouheng, Daimon, Hideo, Wang, Guofeng, Greeley, Jeffrey, Pearson, John, Paulikas, Arvydas P, Karapetrov, Goran, Strmcnik, Dusan, Markovic, Nenad M, Stamenkovic, Vojislav R

“…We report the design and synthesis of multimetallic Au/Pt-bimetallic nanoparticles as a highly durable electrocatalyst for the oxygen reduction reaction (ORR)…”
Get full text

A comparative study of phosphoric acid-doped m-PBI membranes by A. Perry, Kelly, L. More, Karren, Andrew Payzant, E., Meisner, Roberta A., Sumpter, Bobby G., Benicewicz, Brian C.

“…ABSTRACT Phosphoric acid (PA)‐doped m‐polybenzimidazole (PBI) membranes used in high temperature fuel cells and hydrogen pumps were prepared by a conventional…”
Get full text

Enhanced visible light photocatalytic water reduction from a g-C3N4/SrTa2O6 heterojunction by Adhikari, Shiba P., Hood, Zachary D., Wang, Hui, Peng, Rui, Krall, Alex, Li, Hui, Chen, Vincent W., More, Karren L., Wu, Zili, Geyer, Scott, Lachgar, Abdou

“…[Display omitted] Visible-light-active g–C3N4/SrTa2O6 (CN/STO) heterojunction was fabricated using melamine and proton exchanged form (H2SrTa2O7·nH2O) of…”
Get full text

Generating gradient germanium nanostructures by shock-induced amorphization and crystallization by Zhao, Shiteng, Kad, Bimal, Wehrenberg, Christopher E., Remington, Bruce A., Hahn, Eric N., More, Karren L., Meyers, Marc A.

“…Gradient nanostructures are attracting considerable interest due to their potential to obtain superior structural and functional properties of materials…”
Get full text

Preparation and Characterization of PdFe Nanoleaves as Electrocatalysts for Oxygen Reduction Reaction by Zhang, Zhiyong, More, Karren L, Sun, Kai, Wu, Zili, Li, Wenzhen

“…Novel PdFe-nanoleaves (NLs) have been prepared through a wet chemistry-based solution phase reduction synthesis route. High-resolution transmission electron…”
Get full text

Interpreting nanovoids in atom probe tomography data for accurate local compositional measurements by Wang, Xing, Hatzoglou, Constantinos, Sneed, Brian, Fan, Zhe, Guo, Wei, Jin, Ke, Chen, Di, Bei, Hongbin, Wang, Yongqiang, Weber, William J., Zhang, Yanwen, Gault, Baptiste, More, Karren L., Vurpillot, Francois, Poplawsky, Jonathan D.

“…Quantifying chemical compositions around nanovoids is a fundamental task for research and development of various materials. Atom probe tomography (APT) and…”
Get full text

Advanced analytical electron microscopy for lithium-ion batteries by Qian, Danna, Ma, Cheng, More, Karren L, Meng, Ying Shirley, Chi, Miaofang

“…Lithium-ion batteries are a leading candidate for electric vehicle and smart grid applications. However, further optimizations of the energy/power density,…”
Get full text