Retraction: Phosphorus‐Rich Colloidal Cobalt Diphosphide (CoP2) Nanocrystals for Electrochemical and Photoelectrochemical Hydrogen Evolution

Adv. Mater . 2019 , 31 , 1900813. https://doi.org/10.1002/adma.201900813 The above article, published online on May 6, 2019, in Wiley Online Library ( https://doi.org/10.1002/adma.201900813 ), has been retracted by agreement between the authors, the journal Editor in Chief Jos Lenders, and Wiley‐VCH GmbH. The retraction has been agreed on following concerns raised by a third party and a subsequent investigation at Wake Forest University. Data integrity issues were found in Figures 2c, 4d, S13a, S13b, S15, and S37. As a result, the authors consider the conclusions of this article invalid.