Lithium Iron Borates as High‐Capacity Battery Electrodes

Beyond the limited lithium storage capability of the (PO4)3−-based compound, LiFePO4 (170 mAh/g), which is currently recognized as the most promising lithium battery cathode for large-scale application, a compound with the lightest small triangle oxyanion unit (BO3)3−, namely LiFeBO3, exhibits a much larger reversible capacity of ca. 200 mAh/g with surprisingly small volume change of ca. 2%. Detailed facts of importance to specialist readers are published as "Supporting Information". Such documents are peer-reviewed, but not copy-edited or typeset. They are made available as submitted by the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.