The MnO2 nano particles were deposited on the surface of carbon nanotubes (CNTs) to obtain MnO2/CNTs composite by alcohol assisted liquid phase precipitation method.The two ingredient ratio was used to prepare the electrode and assemble into a supercapacitor.in laboratory.Using cyclic voltammetry,AC impedance method and constant current charge discharge method,the performance of the electrode in Na2SO4(1mol/L,pH=3),neutral Na2SO4(1mol/L) and saturated LiNO3 was studied.The results shown that the acetylene black was better than graphite as electronic conductor,MnO2/CNTs had the highest specific capacity(169F/g) in acidic electrolyte pH=3 of Na2SO4,but the capacity of the cycle was not good.Then in neutral solution,the electrode showed higher specific capacityand cycle ability.in saturated LiNO3.
Wang Manli, Lin Yong, Zhou Hai, Liu Yang, Dai Kunyi, Pan Kuangchao, Tan Dongmei
. Study on the supercapacitor performance of MnO2/CNTs composite prepared by alcohol assisted method[J]. New Chemical Materials, 2021
, 49(8)
: 150
-152
.
DOI: 10.19817/j.cnki.issn 1006-3536.2021.08.031
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