Results 71 to 80 of about 888,007 (201)

Recent advances in polyoxometalate-based proton conducting materials: Design strategies, conduction mechanisms, structure–function relationships and future perspectives

Nano Research
In recent years, the depletion risk of fossil fuels has driven increasing interest in renewable energy. Among various technologies, proton exchange membrane fuel cells (PEMFCs) stand out due to their fast startup and high power density.
Haibo Zhang, Yafu Wang, Yanru Shi, Yiyi Zhang, Yihang Yang, Yuexin Wang, Yue Cui, Junyan Guo, Pan Zhang, Lin Sun, Jiangwei Zhang   +10 more
doaj   +1 more source

Lowering grain boundary resistance of BaZr0.8Y0.2O3−δ with LiNO3 sintering-aid improves proton conductivity for fuel cell operation

, 2011
A novel sintering additive based on LiNO3 was used to overcome the drawbacks of poor sinterability and low grain boundary conductivity in BaZr0.8Y0.2O3-δ (BZY20) protonic conductors. The Li-additive totally evaporated during the sintering process at 1600°
Ziqi Sun, Emiliana Fabbri, Bi, Lei, Fabbri, Emiliana, Lei Bi, Enrico Traversa, Traversa, Enrico, Sun, Ziqi   +7 more
core   +1 more source

Thermal Conductivity of Carbon Nanotubes and their Polymer Nanocomposites: A Review [PDF]

, 2011
Thermally conductive polymer composites offer new possibilities for replacing metal parts in several applications, including power electronics, electric motors and generators, heat exchangers, etc., thanks to the polymer advantages such as light weight ...
Fina, Alberto, Han, Zhidong, Zhidong Han, Alberto Fina   +3 more
core   +1 more source

Photo-assisted synthesis of protonated oxides for fuel cells

Communications Chemistry
The absence of intrinsic protons in proton-conducting oxides (PCO) is a significant challenge that limits the proton conductivity of proton-conducting perovskites, such as Y-doped BaMO3 (M = Zr, Ce), in proton ceramic fuel cells exhibit low conductivity (
Atif Nazar, Bushra Bibi, Chenjie Lou, Fan Yang, Fan Qi, Yifu Jing, Shukui Li, Rizwan Raza, Muhammad Yousaf, Muhammad Afzal, Kashif Nazar, Mingxue Tang, Liangdong Fan, Bin Zhu   +13 more
doaj   +1 more source

Proton conductivity of powder samples [PDF]

, 2012
Title: Proton Conductivity of Powder Samples Author: Lukáš Taraba Department: Department of Inorganic Chemistry, Faculty of Science Supervisor: Doc. RNDr. David Havlíček, CSc.
Taraba, Lukáš
core  

Percolation Effects In Electrical Conductivity Of Carbon Fibre Composites [PDF]

, 2011
The effects due to percolation on the bulk electrical conductivity of Carbon Fibre Composites are studied in detail. To simulate the CFCs manufacturing process the fibres are placed randomly in the polymer matrix using Monte Carlo based simulation ...
Chippendale, Richard, Golosnoy, Igor O, R.D. Chippendale, I.O. Golosnoy   +3 more
core   +1 more source

Review on Modification of Sulfonated Poly (-ether-ether-ketone) Membranes Used as Proton Exchange Membranes

Medžiagotyra, 2015
The proton exchange membrane fuel cell (PEMFC) is a type of modern power, but the traditional proton exchange membranes (PEM) of PEMFC are limited by high methanol permeability and water uptake.
Xiaomin GAO, Yonghua LIU, Jinlong LI
doaj   +1 more source

Proton irradiation of EMCCDs [PDF]

, 2006
This paper describes the irradiation of 95 electron multiplication charge coupled devices (EMCCDs) at the Paul Scherrer Institut (PSI) in Switzerland, to investigate the effects of proton irradiation on the operational characteristics of CCDs featuring ...
Holland, AD, Ingley, R, Smith, DR
core   +1 more source

Multilayer Casting Strategy for Enhanced Cation Contamination Resistance in Proton Exchange Membranes

Electron
The proton exchange membrane (PEM) is critical for the operation of proton exchange membrane fuel cells (PEMFCs). However, cationic impurities (e.g., Ca2+ and Mg2+) in water or the environment readily bind to the PEM's sulfonic acid groups (−SO3H ...
Haodong Xie, Yunfa Dong, Shijie Zhong, Yupei Han, Quan Li, Jiecai Han, Weidong He   +6 more
doaj   +1 more source

An effective strategy to enhance phosphoric acid retention and proton conductivity stability: Construction of proton transfer channels with starch rather than H3PO4

Polymer Testing
To enhance the phosphoric acid (PA) retention as well as maintain high proton conductivity of phosphoric acid doped proton exchange membranes at high temperature, we successfully design a series of phosphoric acid doped biobased composite membranes by ...
Xiuping Li, Jiyuan Zhang, Xiao Zhang, Xiudong Liu, Shuhua Chen, Yue Qiao, Qian Li, Cheng Liu   +7 more
doaj   +1 more source