Black phosphorus composites with engineered interfaces for high-rate high-capacity lithium storage
Hongchang Jin, Sen Xin, Cheng‐Hao Chuang, Wangda Li, Haiyun Wang, Jian Zhu, Huanyu Xie, Taiming Zhang, Yangyang Wan, Zhikai Qi, Wensheng Yan, Ying‐Rui Lu, Ting‐Shan Chan, Xiaojun Wu, John B. Goodenough, Hengxing Ji, Xiangfeng Duan
Abstract
Engineering phosphorous anodes A focus of battery research has been the development of a range of lithium, sodium, and potassium cathodes, but improving anode materials is also an important goal. Silicon has shown some promise for replacing graphite because of its exceptional capacity, but the dramatic volume change during lithiation-delithiation processes often leads to failure. Jin et al. developed a composite that is made of black phosphorous and graphite in its core and covered with swollen polyaniline. In contrast to previous efforts, bonding between the carbon and phosphorous allows for a high charging rate without sacrifices in capacity and cycling stability. Science , this issue p. 192