多孔 FeF/MWCNTs 复合阴极促进高性能铝存储。

Porous FeF/MWCNTs composite cathode promoting high performance aluminum storage.

机构信息

State Key Laboratory of Heavy Oil Processing, College of Chemistry and Chemical Engineering, China University of Petroleum, Qingdao 266580, P. R. China.

School of Materials Science and Engineering, China University of Petroleum, Qingdao 266580, P. R. China.

出版信息

Chem Commun (Camb). 2022 Dec 6;58(97):13495-13498. doi: 10.1039/d2cc04338f.

DOI:10.1039/d2cc04338f

PMID:36383345

Abstract

Rechargeable aluminum-ion batteries (RAIBs) attract great attention for stationary energy storage, but there remains a lack of suitable cathode materials for them. Here, a porous iron fluoride/multi wall carbon nanotube (FeF/MWCNTs) composite as a cathode for RAIBs shows high discharge capacity (180 mA h g) and good rate performance, while MWCNTs play crucial roles in improving conductivity and cycle stability. Various characterizations elucidate its conversion-type mechanism, in particular, the Fe/Fe conversion exhibits a high operating potential of 1.75 V and discharge capacity of 123 mA h g, which is very promising for practical applications.

摘要

可充电铝离子电池（RAIBs）因其在固定储能方面的应用而备受关注，但目前仍缺乏适合的阴极材料。本文中，一种用作 RAIBs 阴极的多孔氟化铁/多壁碳纳米管（FeF/MWCNTs）复合材料表现出高放电容量（180 mA h g）和良好的倍率性能，而 MWCNTs 在提高导电性和循环稳定性方面发挥了关键作用。各种特性研究阐明了其转化型机制，特别是 Fe/Fe 的转化具有 1.75 V 的高工作电势和 123 mA h g 的放电容量，这在实际应用中极具前景。