Premium
The Effect of Different Carbon Materials on Manganese Oxide‐Based Lithium–Air Batteries in Ambient Environment
Author(s) -
Zhu Yongming,
Shi Haihao,
Hu Huili
Publication year - 2016
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201500320
Subject(s) - carbon black , graphite , catalysis , lithium (medication) , manganese , materials science , acetylene , linear sweep voltammetry , carbon fibers , chemical engineering , battery (electricity) , graphite oxide , inorganic chemistry , electrode , cyclic voltammetry , electrochemistry , chemistry , composite material , organic chemistry , metallurgy , composite number , medicine , natural rubber , physics , quantum mechanics , engineering , endocrinology , power (physics)
Rodlike manganese oxide (α‐MnO 2 ) was prepared through a homogeneous hydrothermal reaction. Air electrodes, made with a mixture of graphite/acetylene black (G/AB) with and without the as‐made α‐MnO 2 , were prepared for lithium–air cells. Linear sweep voltammetry (LSV) results show that the as‐made α‐MnO 2 can greatly increase the rate of the oxygen reduction reaction (ORR), and that the graphite has a very low catalytic activity towards ORR, while acetylene black has a better catalytic activity towards ORR. The batteries were tested in ambient atmosphere. The results show that graphite can improve the charge and discharge performance, and acetylene black can improve the specific capacity. When using 28 % α‐MnO 2 +56 % graphite as catalyst, the initial discharge capacity was 200 mAh g −1 , and the number of cycles reached up to 5. When using 28 % α‐MnO 2 +56 % acetylene black as catalyst, the initial discharge capacity was 1150 mAh g −1 , but did not realize the charge and discharge cycles.