Details

Autor(en) / Beteiligte

• Emani, Satyanarayana
• Liu, Caihong
• Ashuri, Maziar
• Sahni, Karan
• Wu, Jinpeng
• Yang, Wanli
• Németh, Károly
• Shaw, Leon L.

Titel

Li3BN2 as a Transition Metal Free, High Capacity Cathode for Li‐ion Batteries

Ist Teil von

• ChemElectroChem, 2019-01, Vol.6 (2), p.320-325

Ort / Verlag

Weinheim: John Wiley & Sons, Inc

Erscheinungsjahr

2019

Link zum Volltext

Quelle

Wiley HSS Collection

Beschreibungen/Notizen

• Li3BN2 is investigated for the first time as a transition metal free, high capacity cathode material for Li‐ion batteries. It is shown that α‐Li3BN2 can exhibit a specific capacity of 890 mA h g−1 with the charge storage mechanism associated with the valence state change of N ions in the BN2 anion. The specific capacity demonstrated in this study is the highest one ever reported in literature for an intercalation‐type cathode material. Further, using the valence state change of N ions as a charge storage mechanism opens the door for designing additional high performance, transition metal free electrodes in the future. Charge/discharge behavior of an α‐Li3BN2 half‐cell at the 0.1 C rate with an ultrahigh specific capacity of 890 mAh/g for an intercalation‐type cathode is investigated. The charge storage mechanism of α‐Li3BN2 is associated with the valence state change of N ions in the BN2 anion during Li‐ion intercalation and de‐intercalation, as demonstrated via X‐ray photoelectron spectroscopy and synchrotron‐based soft X‐ray absorption spectroscopy.