Angewandte Chemie International Edition

Pontoriero, Letizia; Schiavina, Marco; Murrali, Maria Grazia; Pierattelli, Roberta; Felli, Isabella C.

doi: 10.1002/anie.202084262pmid: N/A

Huang, Wei; Huber, Niklas; Jiang, Shuai; Landfester, Katharina; Zhang, Kai A. I.

doi: 10.1002/anie.202084261pmid: N/A

Schienbein, Philipp; Marx, Dominik

doi: 10.1002/anie.202011869pmid: N/A

Dong, Chao; Yu, Qun; Ye, Run‐Ping; Su, Panpan; Liu, Jian; Wang, Guang‐Hui

doi: 10.1002/anie.202011892pmid: N/A

doi: 10.1002/anie.202084211pmid: N/A

doi: 10.1002/anie.202005022pmid: 32301573

Urbina‐Blanco, César A.; Jilani, Safia Z.; Speight, Isaiah R.; Bojdys, Michael J.; Friščić, Tomislav; Stoddart, J. Fraser; Nelson, Toby L.; Mack, James; Robinson, Renã A. S.; Waddell, Emanuel A.; Lutkenhaus, Jodie L.; Godfrey, Murrell; Abboud, Martine I.; Aderinto, Stephen O.; Aderohunmu, Damilola; Bibič, Lučka; Borges, João; Dong, Vy M.; Ferrins, Lori;

Cao, Shuang; Piao, Lingyu

doi: 10.1002/anie.202009633pmid: 32902089

Over the past decades, various photocatalysts have been developed and great progress has been achieved in the field of solar‐driven photocatalytic water splitting. However, the lack of an accurate and comprehensive evaluation method greatly hinders the meaningful comparison between different systems and becomes a serious impediment for the development of photocatalysts. Although many researchers are aware of this, there has been little work in this area. In this Viewpoint, we first analyze the insufficiencies of the existing evaluation methods and then make preliminary suggestions, aiming to stimulate discussion in the research community and hopefully lead to a widely accepted and authoritative evaluation system to assess photocatalyst performance.

Huang, Jianhang; Dong, Xiaoli; Guo, Zhaowei; Wang, Yonggang

doi: 10.1002/anie.202003198pmid: 32329546

Aqueous batteries using inorganic compounds as electrode materials are considered a promising solution for grid‐scale energy storage, while wide application is limited by the short life and/or high cost of electrodes. Organics with carbonyl groups are being investigated as the alternative to inorganic electrode materials because they offer the advantages of tunable structures, renewability, and they are environmentally benign. Furthermore, the wide internal space of such organic materials enables flexible storage of various charged ions (for example, H+, Li+, Na+, K+, Zn2+, Mg2+, and Ca2+, and so on). We offer a comprehensive overview of the progress of organics containing carbonyls for energy storage and conversion in aqueous electrolytes, including applications in aqueous batteries as solid‐state electrodes, in flow batteries as soluble redox species, and in water electrolysis as redox buffer electrodes. The advantages of organic electrodes are summarized, with a discussion of the challenges remaining for their practical application.

Ma, Zhong; Cano, Zachary P.; Yu, Aiping; Chen, Zhongwei; Jiang, Gaopeng; Fu, Xiaogang; Yang, Lin; Wu, Tianpin; Bai, Zhengyu; Lu, Jun

doi: 10.1002/anie.202003654pmid: 32271975

Pt‐based electrocatalysts are considered as one of the most promising choices to facilitate the oxygen reduction reaction (ORR), and the key factor enabling their success is to reduce the required amount of platinum. Herein, we focus on illuminating both the theoretical mechanisms which enable enhanced and sustained ORR activity and the practical methods to achieve them in catalysts. The various multi‐step pathways of ORR are firstly reviewed and the rate‐determining steps based on the reaction intermediates and their binding energies are analyzed. We then explain the critical aspects of Pt‐based electrocatalysts to tune oxygen reduction properties from the viewpoints of active sites exposure and altering the surface electronic structure, and further summarize representative research progress towards practically achieving these activity enhancements with a focus on platinum size reduction, shape control and core Pt elimination methods. We finally outline the remaining challenges and provide our perspectives with regard to further enhancing their activities.