Results 81 to 90 of about 36,695 (252)

Electrochemical Analysis of an Anode-Supported SOFC

International Journal of Electrochemical Science, 2013
Anode-supported SOFCs have received increased attention in recent years. An electrochemical model was developed and verified for a 10×10 cm2 anode-supported SOFC. The activation, ohmic and concentration overpotentials were taken into account in the model.
Shuangqiao Yang, Tao Chen, Ying Wang, Zhenbo Peng, Wei Guo Wang   +4 more
doaj   +1 more source

Use of Biocompatible Buffers to Reduce the Concentration Overpotential for Hydrogen Evolution

, 2009
The hydrogen evolution reaction (HER) at Pt-cathodes of microbial electrolysis cells (MEC) has been associated with overpotentials of several hundred millivolts. The high overpotentials challenge the sustainability of an MEC.
Jeremiasse, A.W., Kleijn, J.M., Hamelers, H.V.M., Buisman, C.J.N.   +3 more
core   +1 more source

Sustainable and Multifunctional Natural Macromolecular Polymers for Aqueous Zn Metal Batteries

Advanced Materials, EarlyView.
We comprehensively review the structure‐function relationships and regulatory mechanism of natural macromolecular polymers in stabilizing zinc anodes at the microscopic and mesoscopic scales. The interactions among polymer structures, optimization strategies, and regulatory mechanisms are discussed systematically summarizing recent related research ...
Yunuo Shi, Bo Jiang, Jingcheng Zhang, Xiaodong Shao, Peixun Xiong, Lutong Shan, Shengyang Huang, Mengfang Liang, Mengyao Chang, Fangyan Liu, Wenwu Li, Baoyu Xia, Wei Ji, Ho Seok Park   +13 more
wiley   +1 more source

Unravelling degradation mechanisms and overpotential sources in aged and non-aged batteries:A non-invasive diagnosis [PDF]

In-depth analysis of overpotentials in complex electrochemical systems such as lithium-ion batteries is necessary for enhancing their energy and power density.
Vegge, Tejs, Flores, Eibar, Rieger, Laura Hannemose, Appiah, Williams Agyei, Flores Cedeño, Eibar, Bhowmik, Arghya   +5 more
core   +1 more source

Electrolyte Design for Fast‐Charging Lithium‐Based Batteries

Advanced Materials, EarlyView.
A decade of progress in fast‐charging electrolytes for lithium batteries is reviewed. Electrolyte design strategies spanning solvents, salts, additives, and advanced systems, such as localized high‐concentration electrolytes (LHCEs), are summarized. Advanced diagnostic tools for lithium plating and interphase chemistry are discussed, with perspectives ...
Chen Liu, Zehao Cui, Arumugam Manthiram
wiley   +1 more source

Active Phase of Nickel Electrocatalysts Driving Alkaline Hydrogen Evolution

Advanced Materials, EarlyView.
Using depth‐resolved and operando spectroscopic measurements coupled with electrochemical mass spectrometry, the authors uncover the critical role of sub‐surface oxidised species in increasing the activity and durability of Ni‐based cathodes for hydrogen evolution.
Yifeng Wang, Eleanor Ender, Santosh Kumar, Cindy Tseng, Guangmeimei Yang, Boxi Ye, Caiwu Liang, Youli Yu, Norton West, Inderjeet Chauhan, Jun H. Ng, Sid Halder, Sang Gu Ji, Georg Held, Mary P. Ryan, Katie L. Moore, Alex S. Walton, Reshma R. Rao   +17 more
wiley   +1 more source

Review of Inorganic Separator Engineering for Next‐Generation Lithium–Sulfur Batteries: Compromise or Cornerstone?

Advanced Materials, EarlyView.
Inorganic compound‐modified separators transform lithium–sulfur batteries from passive polysulfide confinement to active reaction‐pathway regulation. A Practical Relevance Index (PRI)‐guided framework bridges interfacial chemistry of inorganic separators with practical constraints, establishing unified design principles for scalable, high‐energy ...
Yuting Qin, Tianyi Wang, Xingyu Wang, Kaifu Xu, Yuzhou Wang, Chengyin Wang, Bing Sun, Guoxiu Wang   +7 more
wiley   +1 more source

Homogenous Electrocatalytic Oxygen Reduction Rates Correlate with Reaction Overpotential in Acidic Organic Solutions

, 2016
Improved electrocatalysts for the oxygen reduction reaction (ORR) are critical for the advancement of fuel cell technologies. Herein, we report a series of 11 soluble iron porphyrin ORR electrocatalysts that possess turnover frequencies (TOFs) from 3 s–1
Derek J. Wasylenko (1752172), Simone Raugei (249177), Michael L. Pegis (3280200), Bradley A. McKeown (1950541), X. Peter Zhang (1327149), James M. Mayer (1262151), Kai Lang (2262604), Neeraj Kumar (109718)   +7 more
core   +2 more sources

Use of Biocompatible Buffers to Reduce the Concentration Overpotential for Hydrogen Evolution

, 2016
The hydrogen evolution reaction (HER) at Pt-cathodes of microbial electrolysis cells (MEC) has been associated with overpotentials of several hundred millivolts. The high overpotentials challenge the sustainability of an MEC.
Hubertus V. M. Hamelers (1753363), Adriaan W. Jeremiasse (1851481), J. Mieke Kleijn (1476910), Cees J. N. Buisman (1679968)   +3 more
core   +1 more source

Sub‐Nanometer Cobalt on Tungsten Titanium Carbide MXene (W2TiC2Tx): An Electrocatalyst for Highly Efficient and Stable Alkaline Hydrogen Evolution at Industrial‐Scale Current Density

Advanced Materials, EarlyView.
A novel W2TiC2Tx MXene prepared through a MAX‐phase route supports sub‐nanometer Co for highly efficient alkaline hydrogen evolution. Strong Co–W interfacial interactions optimize hydrogen adsorption and catalytic activity, enabling low overpotentials of 63 mV at 10 mA cm−2, small Tafel slope of 44.3 mV dec−1, and exceptional durability at industrially
Xiaopeng Liu, Fan Yang, Deep M. Patel, Mohammad Albloushi, Qiqi Mao, Shan Jiang, Christian J. Breckner, Connor W. Schroeder, Ruoyu Cui, Tao Ma, Dapeng Jing, Wenyu Huang, Jeffrey T. Miller, Wenzhen Li, Luke T. Roling, Yue Wu   +15 more
wiley   +1 more source