Results 121 to 130 of about 85,287 (311)

Tuning Separator Chemistry: Improving Zn Anode Compatibility via Functionalized Chitin Nanofibers

Advanced Functional Materials, EarlyView.
Nanochitin derived from waste shrimp shells is used to fabricate separators for aqueous zinc batteries. By tuning the density of amine and carboxylic surface groups, water mobility at the separator interface is controlled, promoting uniform zinc deposition, suppressing dendrite growth, and enabling exceptional cycling stability exceeding 2000 h ...
Ibrahim Al Kathemi, Vishnu Arumughan, Mohamed Zbiri, Marcel Kröger, Ira Smal, Eero Kontturi, Roza Bouchal   +6 more
wiley   +1 more source

Interplay Between Phase Evolution, Fe Migration, and Oxygen Redox in O3‐Type NaxFeyMn1−yO2 Cathodes

Advanced Functional Materials, EarlyView.
Why do Na‐ion battery cathodes, that are compositionally closely related, follow different structural paths during battery operation? This work shows how Fe content controls when iron atoms migrate from their original sites. Early migration locks the layers and blocks key phase transitions, whereas delayed migration permits fuller structural ...
Morten Johansen, Maria Schou Hansen, Josephine Dunker, Rebekka Klemmt, Dorthe B. Ravnsbæk   +4 more
wiley   +1 more source

Spectroscopic Investigation of Polysulfide Redox Evolution in Catholyte Solutions for Potassium–Sulfur Batteries

Advanced Functional Materials, EarlyView.
Potassium–sulfur batteries are investigated using UV–vis spectroscopy to track the evolution of potassium polysulfide species at elevated temperature. The study reveals sulfur radical anions as key intermediates and shows how solvent composition and cell design influence polysulfide stability, redox behavior, and cycling performance, providing insights
Chiara Morini, Dawid Kasprzak, Lincoln Crowe, Cecilia Spedalieri, Johannes Baller, Naiyu Qi, Fariza Kalyk, Gustav Graeber   +7 more
wiley   +1 more source

High-entropy layered oxide cathode materials with moderated interlayer spacing and enhanced kinetics for sodium-ion batteries

Sodium-ion batteries (SIBs) with low cost and environmentally friendly features have recently attracted significant attention for renewable energy storage. Sodium layer oxides stand out as a type of promising cathode material for SIBs owing to their high
Huang, Zefu;Wang, Shijian;Guo, Xin;Marlton, Frederick;Fan, Yameng;Pang, Wei-Kong;Huang, Tao;Xiao, Jun;Li, Dongfang;Liu, Hao;Gu, Qinfen;Yang, Cheng-Chieh;Dong, Chung-Li;Sun, Bing;Wang, Guoxiu
core   +1 more source

Dielectric polarization in inverse spinel‐structured Mg2TiO4 coating to suppress oxygen evolution of Li‐rich cathode materials

, 2020
High‐energy Li‐rich layered cathode materials (≈900 Wh kg−1) suffer from severe capacity and voltage decay during cycling, which is associated with layered‐to‐spinel phase transition and oxygen redox reaction.
Huarong Xia, Anmin Cao, Yonggang Sun, Huiqiu Deng, Jianming Ma, Zhisheng Lv, Du, Yonghua, Xiang Ge, Chen, Xiaodong, Yi Zeng, Zhu, Zhiqiang, Ma, Jianming, Zeng, Yi, Cao, Shengkai, Cao, Anmin, Yonghua Du, Wei Zhang, Yao Xiao, Zhang, Wei, Sun, Yonggang, Xia, Huarong, Shengkai Cao, Xi, Shibo, Xiaodong Chen, Deng, Huiqiu, Lv, Zhisheng, Xiao, Yao, Zhiqiang Zhu, Shibo Xi, Ge, Xiang   +29 more
core   +1 more source

Review: Overview of Organic Cathode Materials in Lithium-Ion Batteries and Supercapacitors

Energies
Organic materials have emerged as promising candidates for cathode materials in lithium-ion batteries and supercapacitors, offering unique properties and advantages over traditional inorganic counterparts.
Andekuba Andezai, Jude O. Iroh
doaj   +1 more source

Long‐Range Coordination Environment Modulates Single‐Atom Local States and Systemic Impact on CO2 Photoconversion

Advanced Functional Materials, EarlyView.
Terminal groups on Cu porphyrins modulate the electronic states of single‐atom Cu centers through a long‐range electronic effect, without altering the Cu coordination geometry. Meanwhile, a multi‐descriptor framework is established that incorporates porphyrin regulation, hybrid catalyst properties, and CO2 photoreduction capabilities.
Yi Zhang, Jintao Dong, Xiahe Chen, Xiyang Wang, Tiange Wei, Yue Zhu, Tai‐Sing Wu, Yun‐Fang Yang, Shao‐Yuan Leu, Keke Wang, Yuanbin She, Huaming Li, Jiexiang Xia, Molly Meng‐Jung Li   +13 more
wiley   +1 more source

Bioelectrochemical systems for energy recovery from wastewater

, 2009
The global concerns of climate change and energy crisis have provoked research efforts to develop energy-efficient alternatives to conventional activated sludge wastewater treatment processes. Recently, bio-electrochemical systems (BES) such as microbial
Cheng, Ka Yu
core  

Tailoring Li‐ion Storage and Transport in Two‐Dimensional Conjugated Metal‐Organic Frameworks via Precise Nitrogen Incorporation

Advanced Functional Materials, EarlyView.
Two nitrogen‐doped 2D conjugated metal‐organic frameworks (2D c‐MOFs, namely Cu‐Nx‐OHBA, x = 2 or 4) are synthesized, featuring precise nitrogen incorporation via rational ligand design. The Cu‐Nx‐OHBA 2D c‐MOFs are largely tailorable by varying skeletal nitrogen density, with respect to electrical conductivity, Li‐storage capacitance, and Li‐transport
Xiangyu Li, Shaoze Shi, Fucai Cui, Rashid Iqbal, Pengyu Wang, Tianrui Wu, Jingcheng Hao, Renhao Dong   +7 more
wiley   +1 more source

High energy and high intensity electron and X-ray beams by pyroelectric effect [PDF]

, 2012
The production of x-rays has been a useful technique in many areas of science, medicine and various industries for over 100 years. Over this time various new methods of generating x-rays have been produced, allowing improved performance in existing ...
Hockley, Matthew
core