Dendritic Ni-P-coated melamine foam for a lightweight, low-cost, and amphipathic three-dimensional current collector for binder-free electrodes.

Huang, Xiao-lei; Xu, Dan; Yuan, Shuang; Ma, De-long; Wang, Sai; Zheng, Huai-yu; Zhang, Xin-bo · Adv Mater · 2014

basic_science · Level V

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Abstract

A highly conductive 3D current collector that is dendritic, lightweight, and robust is synthesized for binder-free electrodes in lithium-ion batteries. It has excellent chemical/electrochemical stability in a wide voltage window (0-5 V) and robust mechanical behavior even after 600 cycles of compression. When active materials are grown in situ on the as-obtained current collector, the resulting cycling stability and rate capability far exceed those of conventional electrodes and other 3D current collectors.