@article{34309,
  author = {Haodong Liu and Zhuoying Zhu and Qizhang Yan and Sicen Yu and Xin He and Yan Chen and Rui Zhang and Lu Ma and Tongchao Liu and Matthew Li and Ruoqian Lin and Yiming Chen and Yejing Li and Xing Xing and Yoonjung Choi and Lucy Gao and Helen Sung-yun Cho and Ke An and Jun Feng and Robert Kostecki and Khalil Amine and Tianpin Wu and Jun Lu and Huolin L Xin and Shyue Ping Ong and Ping Liu},
  title = {A disordered rock salt anode for fast-charging lithium-ion batteries},
  abstract = {<p><span>Rechargeable lithium-ion batteries with high energy density that can be safely charged and discharged at high rates are desirable for electrified transportation and other applications</span><span>. However, the sub-optimal intercalation potentials of current anodes result in a trade-off between energy density, power and safety. Here we report that disordered rock salt</span><span>&nbsp;Li</span><span>3+<em>x</em></span><span>V</span><span>2</span><span>O</span><span>5</span><span>&nbsp;can be used as a fast-charging anode that can reversibly cycle two lithium ions at an average voltage of about 0.6 volts versus a Li/Li</span><span>+</span><span>&nbsp;reference electrode. The increased potential compared to graphite</span><span>&nbsp;reduces the likelihood of lithium metal plating if proper charging controls are used, alleviating a major safety concern (short-circuiting related to Li dendrite growth). In addition, a lithium-ion battery with a disordered rock salt Li</span><span>3</span><span>V</span><span>2</span><span>O</span><span>5</span><span>&nbsp;anode yields a cell voltage much higher than does a battery using a commercial fast-charging lithium titanate anode or other intercalation anode candidates (Li</span><span>3</span><span>VO</span><span>4</span><span>&nbsp;and LiV</span><span>0.5</span><span>Ti</span><span>0.5</span><span>S</span><span>2</span><span>)</span><span>. Further, disordered rock salt Li</span><span>3</span><span>V</span><span>2</span><span>O</span><span>5</span><span>&nbsp;can perform over 1,000 charge–discharge cycles with negligible capacity decay and exhibits exceptional rate capability, delivering over 40 per cent of its capacity in 20 seconds. We attribute the low voltage and high rate capability of disordered rock salt Li</span><span>3</span><span>V</span><span>2</span><span>O</span><span>5</span><span>&nbsp;to a redistributive lithium intercalation mechanism with low energy barriers revealed via ab initio calculations. This low-potential, high-rate intercalation reaction can be used to identify other metal oxide anodes for fast-charging, long-life lithium-ion batteries.</span></p>},
  year = {2020},
  journal = {Nature},
  volume = {585},
  pages = {63 - 67},
  month = {09/2020},
  issn = {0028-0836},
  doi = {10.1038/s41586-020-2637-6},
  language = {eng},
}