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Performance of anaerobic fluidized bed microbial fuel cell with different porous anodes

Chinese Journal of Chemical Engineering 2020年第3期28卷 846-853页

作者： Xiuli Zhang Chunhu Li Qingjie Guo Kelei Huang Key Laboratory of Marine Chemistry Theory and Engineering Technology of Ministry of Education College of Chemistry and Chemical EngineeringOcean University of ChinaQingdao 266100China Key Laboratory of Clean Chemical Processing of Shandong Province College of Chemical EngineeringQingdao University of Science and TechnologyQingdao 266042China

Anode materials were used to construct microbial fuel cells(MFCs),and the characteristics of the anodes were important for successful applied performance of the *** the cyclic voltammetry(CV)method,the experiments showed that 5 wt%multiwalled carbon nanotubes(MWNTs)were optimal for the PANI/MWNT film anodes prepared using 24 polymerization *** maximum output voltage of the PANI/MWNT film anodes reached 967.7 mV with a power density of 286.63 mW·*** output voltages of 860 mV,850 mV,and870 mV were achieved when the anaerobic fluidized bed microbial fuel cell(AFBMFC)anodes consisted of carbon cloth with carbon black on one side,copper foam and carbon brushes,*** of the anodes before starting the AFBMFC by immersion in a stirred bacterial fluid significantly shortened the AFBMFC startup *** the AFBMFC was continuously run,the anode surfaces generated active microbial catalytic material.

关键词： Circulating fluidized bed Multiphase flow porous anodes Anode modification Electrochemistry

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Understanding and modifications on lithium deposition in lithium metal batteries

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Rare Metals 2022年第8期41卷 2800-2818页

作者： Qin-Ya Yang Zhao Yu Yao Li Wang Zhang Hao-Wen Yuan Hong-Jie Li Wei Ma Shen-Min Zhu Sa Li State Key Laboratory of Metal Matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai200240China School of Materials Science and Engineering Tongji UniversityShanghai201804China

Lithium metal has been considered as an ultimate anode choice for next-generation secondary batteries due to its low density,superhigh theoretical specific capacity and the lowest voltage ***,uncontrollable dendrite growth and consequently large volume change during stripping/plating cycles can cause unsatisfied operation efficiency and serious safety concern,restraining its commercial use for the last 40 *** widely used lithium-ion battery is approaching its theoretical limit at present,it is increasingly urgent to develop new energy storage equipment with sufficient practical ***,two important processes of lithium deposition,nucleation and growth on lithium metal anode are *** three-dimensional(3 D)porous anodes with unique structure and dynamic surface conditions,as one of the most efficient designs on dendrites suppression,are specifically discussed in terms of their beneficial adjustment on the dendrite *** on current designs and prospects on future advanced porous anode are explored in the end.

关键词： Lithium metal batteries Lithium nucleation Dendrites growth porous anodes

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Conversion of hydroxide into carbon-coated phosphide using plasma for sodium ion batteries

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Nano Research 2022年第3期15卷 2023-2029页

作者： Jin Liang Guoyin Zhu Yizhou Zhang Hanfeng Liang Wei Huang Key Laboratory of Flexible Electronics(KLOFE)&Institute of Advanced Materials(IAM) Nanjing Tech University(NanjingTech)Nanjing 211800China College of Chemistry and Chemical Engineering Xiamen UniversityXiamen 361005China School of Chemistry and Materials Science Institute of Advanced Materials and Flexible Electronics(IAMFE)Nanjing University of Information Science and TechnologyNanjing 210044China State Key Laboratory of Organic Electronics and Information Displays&Institute of Advanced Materials(IAM) Nanjing University of Posts&TelecommunicationsNanjing 210023China

Transition metal phosphides(TMPs)are promising candidates for sodium ion battery anode materials because of their high theoretical capacity and earth *** to many other P-based conversion type electrodes,TMPs suffer from large volumetric expansion upon cycling and thus quick performance ***,TMPs are easily oxidized in air,resulting in a surface phosphate layer that not only decreases the electric conductivity but also hinders the Na ion *** this work,we present a general electrode design that overcomes these two major challenges facing *** metal hydroxide and glucose as precursors,we show that the metal hydroxide can be converted into phosphide whereas the glucose simultaneously decomposes and forms carbon shell on the phosphide particles under a plasma ***2P@C core shell structures as a proof-of-concept are designed and *** in situ formed carbon shell protects the Ni2P from ***,the high-energy plasma introduces porosity and vacancies to the Ni2P and more importantly produces phosphorus-rich nickel phosphides(NiPx).As a result,the Ni2P@C electrodes achieve high sodium capacity(693 mAh·g^(−1) after 50 cycles at 100 mA·g^(−1))and excellent cyclability(steady capacity maintained for at least 1,500 cycles).Our work provides a general strategy for enhancing the sodium storage performance of TMPs,and in general many other conversion type electrode materials that are unstable in air and suffer from large volumetric changes upon cycling.

关键词： porous anodes Ni2P plasma conversion phosphorus-rich sodium ion batteries

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