@article{Zhong2017, 
author = {Xing Zhong and Benjamin Papandrea and Yuxi Xu and Zhaoyang Lin and Hua Zhang and Yuan Liu and Yu Huang and Xiangfeng Duan},
title = {Three-dimensional graphene membrane cathode for high energy density rechargeable lithium-air batteries in ambient conditions},
year = {2017},
journal = {Nano Research},
volume = {10},
number = {2},
pages = {472-482},
keywords = {energy storage, graphene framework, three-dimensional (3D)-network, lithium air-battery, water resistive},
url = {https://www.sciopen.com/article/10.1007/s12274-016-1306-4},
doi = {10.1007/s12274-016-1306-4},
abstract = {Lithium-air batteries have attracted significant interest for applications in high energy density mobile power supplies, yet there are considerable challenges to the development of rechargeable Li-air batteries with stable cycling performance under ambient conditions. Here we report a three-dimensional (3D) hydrophobic graphene membrane as a moisture-resistive cathode for high performance Li-air batteries. The 3D graphene membrane features a highly interconnected graphene network for efficient charge transport, a highly porous structure for efficient diffusion of oxygen and electrolyte ions, a large specific surface area for high capacity storage of the insulating discharge product, and a network of highly tortuous hydrophobic channels for O2/H2O selectivity. These channels facilitate O2 ingression while retarding moisture diffusion and ensure excellent charge/ discharge cycling stability under ambient conditions. The membrane can thus enable robust Li-air batteries with exceptional performance, including a maximum cathode capacity that exceeds 5, 700 mAh/g and excellent recharge cycling behavior (> 2, 000 cycles at 140 mAh/g, and > 100 cycles at 1, 400 mAh/g). The graphene membrane air cathode can deliver a lifetime capacity of 100, 000–300, 000 mAh/g, comparable to that of a typical lithium ion battery cathode. The stable operation of Li-air batteries with significantly improved single charge capacities and lifetime capacities comparable to those of Li-ion batteries may offer an attractive high energy density storage alternative for future mobile power supplies. These batteries may provide much longer battery lives and greatly reduced recharge frequency.}
}