▎ 摘　　要

A freestanding flexible Ni12P5 - carbon @ reduced graphene oxides (RGO) paper was in-situ fabricated by using bacteria to absorb and encapsulate the metal Ni2+ completely. It presented excellent performances such as long cycle-life, high capacity, excellent coulombic efficiency and superior rate performance during charge/discharge processes. Specially, its high conductivity and robust mechanical flexibility may be used in wearable devices or other fields. (C) 2017 Published by Elsevier B.V.