Results 71 to 80 of about 36,695 (252)

High‐Temperature Stable and Long‐Life FeS@Hollow Carbon Composite as Anode Material for High‐Performance Sodium‐Ion Batteries

EcoMat
Sodium‐ion batteries (SIBs) are a promising alternative to lithium‐ion batteries due to their cost‐effectiveness and abundant sodium resources. However, their electrochemical performance is limited by the larger ionic radius and severe volume expansion ...
Joon Ha Moon, Deukhyeon Nam, Youngho Jin, Chan Woong Na, Duckjong Kim, Jung‐Jae Lee, Yoon Myung, Jaewon Choi   +7 more
doaj   +1 more source

How Cobalt and Iron Doping Determine the Oxygen Evolution Electrocatalytic Activity of NiOOH

Cell Reports Physical Science, 2020
Summary: The 3d transition metals have been investigated as active centers in NiOOH to catalyze oxygen evolution reaction (OER); however, questions about the mechanism remain.
Yuhai Dou, Chun-Ting He, Lei Zhang, Mohammad Al-Mamun, Haipeng Guo, Wenchao Zhang, Qingbing Xia, Jiantie Xu, Lixue Jiang, Yun Wang, Porun Liu, Xiao-Ming Chen, Huajie Yin, Huijun Zhao   +13 more
doaj   +1 more source

Chemical Origins of Electrochemical Overpotential in Surface-Conversion Nanocomposite Cathodes

, 2019
© 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim A new branch of promising nanocomposite cathode materials for rechargeable batteries based on non-intercalation materials has been recently discovered.
Il Rok Choi, Sung‐Kyun Jung, Park, Joo Ha, Hwang I., Kyu‐Young Park, Choi I.R., Yoon, Gabin, Joo Ha Park, Yoon G., Insang Hwang, Jung, Sung-Kyun, Park J.H., Kisuk Kang, Hwang, Insang, Gabin Yoon, Park K.-Y., Choi, Il Rok, Park, Kyu-Young, Kang, Kisuk, Jung S.-K.   +19 more
core   +1 more source

Beyond Presumptions: Toward Mechanistic Clarity in Metal‐Free Carbon Catalysts for Electrochemical H2O2 Production via Data Science

Advanced Materials, EarlyView.
Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu, Hsi‐wen Wu, Xiao Wang, Jie Zhang   +3 more
wiley   +1 more source

Reversing the Tradeoff between Rate and Overpotential in Molecular Electrocatalysts for H₂ Production

, 2018
A longstanding challenge in molecular electrocatalysis is to design catalysts that break away from the tradeoff between rate and overpotential arising from electronic scaling relationships.
Allan Jay P. Cardenas (1945393), Eric S. Wiedner (1364715), R. Morris Bullock (1325817), Christina M. Klug (4107286), Molly O’Hagan (1431499)   +4 more
core   +1 more source

Phase Boundary Engineering of Co2P‐CoP Branched Nanoparticles Enhances Cobalt Oxidation for Oxygen Evolution Electrocatalysis

Advanced Materials, EarlyView.
Phase boundaries between Co2P and CoP are constructed through a controlled transformation of Co to Co2P‐CoP branched nanoparticles. The polycrystalline mixed‐phase Co2P‐CoP branches are enriched with phase boundaries that stabilize Co active sites for OER. This work highlights phase boundary engineering as a powerful approach to tailor active sites and
Zeno R. Ramadhan, Soshan Cheong, Sankhadip Saha, Qinyu Li, Xiaoran Zheng, Samuel V. Somerville, Agus R. Poerwoprajitno, Priyank V. Kumar, Liming Dai, J. Justin Gooding, Richard D. Tilley   +10 more
wiley   +1 more source

Phase Engineering of Nanomaterials (PEN): Evolution, Current Challenges, and Future Opportunities

Advanced Materials, EarlyView.
This review summarizes the synthesis, phase transition, advanced characterization spanning ex situ to in situ and operando techniques, and diverse applications of phase engineering of nanomaterials (PEN). It further outlines key challenges and future opportunities, such as phase stability, architecture control, and artificial intelligence (AI)‐driven ...
Ye Chen, Zhanxi Fan, Jingjie Ge, Qiyuan He, Zhuangchai Lai, Jiawei Liu, Chaoliang Tan, Hua Zhang   +7 more
wiley   +1 more source

The critical overpotential for zinc dendrite formation

, 1979
The critical overpotential for zinc dendrite growth is determined as 173 mV by the method described by Popov et al. [1]. It was shown that this procedure can be applied successfully to metal deposition processes when there is a large codeposition of ...
Pavlović, Miomir, Nakić, V M, Spasojević, M. D., Popov, K. I.   +3 more
core   +1 more source

Gold‐Stabilized Copper Enables Anodic Hydrogen Evolution for Ultralow‐Voltage CO‐to‐Ethylene Electrolysis

Advanced Materials, EarlyView.
Gold‐stabilized copper suppresses hydroxide‐driven deactivation during anodic hydrogen evolution from furfural. Pairing this low‐potential anode with CO‐to‐ethylene electroreduction enables sub‐1 V operation at 400 mA cm−2, high single‐pass CO conversion, and co‐production of ethylene, furoic acid, and a separate hydrogen stream.
Sungjin Park, Hengzhou Liu, Heejong Shin, Hafiz Ghulam Abbas, Loann Bonnenfant, Ke Xie, Hyeon Seok Lee, Fatemeh Arabyarmohammadi, Jianan Erick Huang, Panos Papangelakis, Peiying Wang, Ali Shayesteh Zeraati, Jiheon Kim, Roham Dorakhan, David Sinton, Xiaopeng Liu, Wenzhen Li, Byoung‐hoon Lee, Edward H. Sargent   +18 more
wiley   +1 more source

Electrocatalyst/Semiconductor Interfaces in Photoelectrocatalysts: Mechanistic Analysis of the Impact of Nanoparticle Electrocatalyst Coverage on Performance

Advanced Materials, EarlyView.
Reducing Ni nanoparticle coverage on n‐Si photoanodes enhances photovoltage by promoting thicker interfacial SiOx formation during photoelectrochemical oxygen evolution reaction (OER). Experiments, analytical modeling, and finite‐element simulations reveal that coverage‐dependent chemical interface evolution, rather than geometric effects alone ...
Aarti Mathur, Ahmet Sert, Suljo Linic
wiley   +1 more source