A composite of rod‐shaped LiNi 1/3 Co 1/3 Mn 1/3 O 2 with graphene nanosheets and multiwall carbon nanotubes (MWCNTs) is assembled by using a hydrothermal method. In the composite, LiNi 1/3 Co 1/3 Mn 1/3 O 2 and MWCNTs are wrapped into graphene nanosheets. It exhibits better rate capability in comparison with plain LiNi 1/3 Co 1/3 Mn 1/3 O 2 as a positive electrode for an aqueous rechargeable battery, using zinc as the negative electrode. The average charge and discharge voltages of this aqueous rechargeable battery are 1.80 and 1.65 V, respectively. Based on the total weight of the electrode materials of the composite and Zn, its energy density can reach 154 Wh kg −1 , which is comparable with that of Ni‐MH batteries. Its cycling behavior is satisfactory.
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Wang et al. (2015) studied this question.
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