Results 141 to 150 of about 49,998 (296)

Recent Advances and Challenges in Ammonia‐Hydrogen Energy Conversion

Advanced Science, EarlyView.
This work summarizes the latest progress of various catalytic methods in ammonia‐hydrogen energy conversion. The challenges and outlook of ammonia‐hydrogen energy conversion system are also emphasized. This work expects to build a blueprint of renewable and efficient ammonia‐hydrogen energy conversion systems under mild conditions.
Menghao Lv, Runchao Qin, Jianshuo Chen, Kaiwen Yang, Jianwei Lu, Weiwei Lei, Yifu Yu   +6 more
wiley   +1 more source

Monosymmetric Fe-N4 sites enabling durable proton exchange membrane fuel cell cathode by chemical vapor modification

Nature Communications
The limited durability of metal-nitrogen-carbon electrocatalysts severely restricts their applicability for the oxygen reduction reaction in proton exchange membrane fuel cells. In this study, we employ the chemical vapor modification method to alter the
Jingsen Bai, Tuo Zhao, Mingjun Xu, Bingbao Mei, Liting Yang, Zhaoping Shi, Siyuan Zhu, Ying Wang, Zheng Jiang, Jin Zhao, Junjie Ge, Meiling Xiao, Changpeng Liu, Wei Xing   +13 more
doaj   +1 more source

W‐N‐C Tandem Catalytic Centers Mediating Efficient Charge Transfer for the Enhanced Radical‐Path U(VI) Photoreduction

Advanced Science, EarlyView.
This work constructed a tandem W−N−C center to simultaneously achieve the regulation of reaction pathways and optimization of charge separation efficiency. The Lewis‐acidic W6+ sites activated O2 to generate O2−$O_2^ - $, with enhanced charge separation via electronic modulation, steering U(VI) reduction down an efficient radical pathway.
Zhiyao Wu, Jinhao Xu, Hao Fu, Yuxiang Deng, Nannan Wang, Wenhua Zhang, Peng Zhang, Zhiwei Huang, Zhenpeng Cui, Shu‐Xian Hu, Wangsuo Wu, Duoqiang Pan   +11 more
wiley   +1 more source

Trace Ru‐Doped PtCuRu@PtRu Core‐Shell Electrocatalyst for CO‐Resilient Methanol Oxidation

Advanced Science, EarlyView.
We engineered a trace Ru‐doped PtCuRu@PtRu core‐shell nanostructure. This design exploits lattice mismatch‐induced compressive strain between the PtCuRu ternary core and trace Ru‐doped Pt‐rich shell, systematically downshifting the Pt d‐band center to weaken *CO adsorption energetics.
Tianrui Xue, Shiyue Xing, Zhongliang Liu, Yiting Song, Jianyi Zhang, Miaomiao Liu, Huihui Li, Chunzhong Li   +7 more
wiley   +1 more source

Mn‐Induced Support Stabilization and Ir Electronic Activation Enable Acid‐Stable, Low‐Loading IrO2 Water Oxidation

Advanced Science, EarlyView.
This study introduces a dual‐regulation strategy utilizing a Mn‐doped Co3O4 support to enhance the activity and stability of low‐loading IrO2 catalysts for acidic water oxidation. Mn induces strong Mn─O covalency to reinforce the spinel lattice and activates Ir sites via interfacial electron transfer.
Zhe Liu, Guoxin Ma, Shixiang Yu, Rui Jin, Fei Wang, Xinxin Wen, Mengxin Chen, Yani Ding, Jia Liu, Xinkai Guo, Diab Khalafallah, Hassan Fouad, Xiao Ren, Siwei Li   +13 more
wiley   +1 more source

Uncovering the Role of Intrinsic Magnetic Order in Oxygen Evolution Reaction Activity With Operando Spectroscopy

Advanced Energy Materials, EarlyView.
Operando magnetic spectroscopy provides insight into how intrinsic magnetic order modulates the oxygen evolution reaction on La0.67Sr${\rm La}_{0.67}{\rm Sr}$0.33MnO$_{0.33}{\rm MnO}$3$_3$ thin films. Temperature‐dependent operando FMR and ambient‐pressure XMCD suggest a correlation between activity and the emergence of ferromagnetic regions near and ...
Emma van der Minne, Silvia Mauri, Anatoliy A. Vereshchagin, Vadim Ratovskii, Ellen M. Kiens, Hemanita Sharma, Jan Behrends, Piero Torelli, Gertjan Koster, Christoph Baeumer   +9 more
wiley   +1 more source

Electrochemical incineration of wastes [PDF]

The novel technology of waste removal in space vehicles by electrochemical methods is presented to convert wastes into chemicals that can be eventually recycled.
Bhardwaj, R. C., Bockris, J. OM., Sharma, D. K.   +2 more
core   +1 more source

InGaP/GaAs/InGaAs Multijunction Flexible Photovoltaics With Chemical Robustness and Radiation Hardness for Unassisted Electrocatalysis and Space Applications

Advanced Energy Materials, EarlyView.
A flexible InGaP/GaAs/InGaAs triple‐junction platform encapsulated with ultrathin glass enables unassisted electrocatalysis and space applications by providing robust protection against chemically aggressive and radiation‐rich environments. This work establishes a unified III–V multijunction photovoltaic platform that bridges space photovoltaics and ...
Sukkyu Hong, Seungwan Woo, Hoki Son, Hyun‐Beom Shin, Eungbeom Yeon, Jeongeun Mo, Daehwan Jung, Ho Won Jang, Ho Kwan Kang, Sung‐Min Lee, Won Jun Choi   +10 more
wiley   +1 more source

Self‐Activating Electrocatalysts for Water Splitting: Advancing Structure–Performance Understanding and Beyond

Advanced Energy Materials, EarlyView.
Self‐activating electrocatalysts offer strong potential for advanced water splitting, enabled by their dynamic compositional and structural evolution during operation. This review highlights recent advances in self‐activating OER and HER catalysts, emphasizing the driving forces and mechanisms underlying their adaptive behavior. A conceptual network of
Christean Nickel, Bahareh Feizi Mohazzab, Kiarash Torabi, David Leander Troglauer, Guillermo Corea, Shikang Han, Dandan Gao   +6 more
wiley   +1 more source

Toward Standardization in CO2 Electrolysis: A Round Robin Study

Advanced Energy Materials, EarlyView.
CO2 electrolysis is a promising green technology for producing fuels and chemicals. To support its real‐world adoption, researchers conducted a collaborative study to identify sources of experimental variability. They found key differences in temperature and pressure control across labs and proposed a standardized testing protocol to improve ...
Dorottya Hursán, Kevinjeorjios Pellumbi, Balázs Endrődi, Angelika A. Samu, Emilia Wessel, Henri Pelzer, Viktor Józó, Jasper Biemolt, Ulf‐Peter Apfel, Thomas Burdyny, Brian Seger, Peter Strasser, Csaba Janáky   +12 more
wiley   +1 more source