ChemElectroChem

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Hierarchical Porous Carbons Derived from Renewable Poplar Anthers for High‐Performance Supercapacitors
ChemElectroChem - Tập 5 Số 11 - Trang 1451-1458 - 2018
Jian Song, Wenzhong Shen, Jianguo Wang, Weibin Fan
AbstractHierarchical porous carbons with granular shape were prepared from waste biomass poplar anthers (PA) by pre‐carbonization and following KOH activation. The pore structure and surface chemistry of PA‐derived carbon can be controlled by adjusting the activation temperature. The material activated at 800 °C possesses a high surface area of 3639 m2 g−1, abundant mesopores, and appropriate amou... hiện toàn bộ
Ultrasmall Iron Fluoride Nanoparticles Embedded in Graphitized Porous Carbon Derived from Fe‐Based Metal Organic Frameworks as High‐Performance Cathode Materials for Li Batteries
ChemElectroChem - Tập 6 Số 8 - Trang 2189-2194 - 2019
Naiqing Zhang, Nannan Liu, Chengzhi Sun, Lishuang Fan, Kening Sun
AbstractIron‐based metal organic framework (MOF) MIL‐53 is used as a precursor and self‐template to synthesize a 3D porous carbon/FeF3 ⋅ 0.33 H2O composite in situ. We find that the organic ligands in iron‐containing MOFs can convert into highly graphitized carbon with the catalysis of central Fe atoms. The FeF3 ⋅ 0.33 H2O nanoparticles formed after fluorination and dehydration are surrounded by h... hiện toàn bộ
MnO2 Nanoflower Arrays with High Rate Capability for Flexible Supercapacitors
ChemElectroChem - Tập 1 Số 6 - Trang 1003-1008 - 2014
Wenyao Li, Kaibing Xu, Bo Li, J. F. Sun, Feiran Jiang, Zhishui Yu, Rujia Zou, Zhigang Chen, Junqing Hu
AbstractLarge‐area α‐MnO2 nanoflower arrays are synthesized by using a facile and template‐free electrochemical deposition on flexible graphite paper. These nanoflower arrays exhibit a high specific capacitance of 314 F g−1 at a current density of 1 A g−1 with remarkable rate capability (61.1 % retention at 40 A g−1) and excellent cycle stability. Furthermore, the fabricated flexible symmetric sup... hiện toàn bộ
Multifunctional Separator with Porous Carbon/Multi‐Walled Carbon Nanotube Coating for Advanced Lithium−Sulfur Batteries
ChemElectroChem - Tập 5 Số 1 - Trang 71-77 - 2018
Lei Tan, Xinhai Li, Zhixing Wang, Huajun Guo, Jiexi Wang, Liang An
AbstractAn issue associated with lithium−sulfur (Li−S) batteries is polysulfide dissolution, leading to the serious crossover of polysulfide to the Li anode. To address this issue, we report on a multifunctional separator prepared by introducing a porous carbon/multi‐walled carbon nanotube (PC/MWCNT) composite into a commercial separator. It shows that the PC/MWCNT composite is able to enhance the... hiện toàn bộ
Effective CoxSy HER Electrocatalysts Fabricated by In‐Situ Sulfuration of a Metal‐Organic Framework
ChemElectroChem - Tập 5 Số 23 - Trang 3639-3644 - 2018
Xiaowen Sun, Hui Huang, Chaopeng Wang, Yingying Liu, Tong‐Liang Hu, Xian‐He Bu
AbstractA sulfur and nitrogen containing cobalt metal‐organic framework (Co−MOF) was chosen as a precursor to prepare cobalt sulfides as HER electrocatalysts. Cobalt sulfides with different stoichiometries, CoS1.097, Co9S8, Co9S8/CoS1.097, and Co9S8/CoS1.097/rGO, were obtained through a phase control method and in‐situ sulfuration of the MOF precursor. Co9S8/CoS1.097/rGO shows excellent HER perfor... hiện toàn bộ
Cyclic Voltammetry is Invasive on Microbial Electrosynthesis
ChemElectroChem - Tập 8 Số 17 - Trang 3384-3396 - 2021
Sanne M. de Smit, Cees J.N. Buisman, Johannes H. Bitter, David P. B. T. B. Strik
AbstractCyclic voltammetry (CV) is expected to cause changes in the biocathode composition, especially when using low scan rates. A recent finding stated that CV triggered further biocatalytic activity in microbial electrosynthesis systems (MES), leading to the aim of our study: to investigate the invasiveness of CV on MES. The present study confirms that a CO2 elongation MES biocathode compositio... hiện toàn bộ
Molten Salt Derived Nb2CTx MXene Anode for Li‐ion Batteries
ChemElectroChem - Tập 8 Số 5 - Trang 957-962 - 2021
Hongbin Dong, Xiao Peng, Na Jin, Binbin Wang, Ying Liu, Zifeng Lin
Abstract2D MXenes, are receiving increasing attention thanks to their outstanding performance for electrochemical energy‐storage applications. So far, Ti3C2 is the most studied MXene, while less effort is dedicated to investigating many other MXenes. In this paper, we report the preparation of Nb2CTx MXene by Lewis acidic etching in molten salts. The achieved Nb2CTx MXene is able to deliver a maxi... hiện toàn bộ
Self‐Charging Electrochemical Biocapacitor
ChemElectroChem - Tập 1 Số 2 - Trang 343-346 - 2014
Dmitry Pankratov, Zoltan Blum, Dmitry Suyatin, Vladimir O. Popov, Sergey Shleev
Effect of Multi‐Walled Carbon Nanotubes on Glucose Oxidation by Glucose Oxidase or a Flavin‐Dependent Glucose Dehydrogenase in Redox‐Polymer‐Mediated Enzymatic Fuel Cell Anodes
ChemElectroChem - Tập 1 Số 11 - Trang 1988-1993 - 2014
Isioma Osadebe, Dónal Leech
AbstractThe addition of multi‐walled carbon nanotubes (MWCNTs) to enzymatic electrodes based on either glucose oxidase (GOx), or an oxygen‐insensitive flavin adenine dinucleotide‐dependent glucose dehydrogenase (FADGDH), increases the amount of {Os(4,4′‐dimethyl‐2,2′‐bipyridine)2[poly(vinylimidazole)]10Cl}Cl redox polymer at the electrode surface, indicating that MWCNTs provide a surface for the i... hiện toàn bộ
Black Phosphorus/TiO2 Composite Photoanode with Enhanced Photoelectrical Performance
ChemElectroChem - Tập 4 Số 9 - Trang 2373-2377 - 2017
Jia Song, Jing Wang, Xiaoyu Lin, Jingfu He, Hualei Liu, Yongpeng Lei, Zengyong Chu
AbstractBlack phosphorus (BP) shows broad application in optical, photoelectric and semiconductor fields. Herein, BP nanosheets and few‐layer phosphorene were prepared by means of a solvent exfoliation method. The absorption and fluorescence spectra of BP were measured and dye‐sensitized solar cells (DSSCs) were fabricated using BP/TiO2 films as working electrodes. The results show that the light‐... hiện toàn bộ
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