High-performance flexible and integratable MEG devices from sulfonated carbon solid acids containing strong Brønsted acid sites† Kun Gao,a Jianhan Sun,a Xiangyun Lin,a Yuanyuan Li,a Xiaotong Sun,a Nan Chen *a and Liangti Qu *b Author affiliations * Corresponding authors a Key Laboratory of Cluster Science, Ministry of Education of China, Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology,...