Self‐standing hard carbon anode derived from hyper‐linked nanocellulose with high cycling stability for lithium‐ion batteries oleh Yan Li, Yi‐Feng Du, Guo‐Hua Sun, Jia‐Yao Cheng, Ge Song, Ming‐Xin Song, Fang‐Yuan Su, Fan Yang, Li‐Jing Xie, Cheng‐Meng Chen