Beladi-Mousavi Seyyed Mohsen, Sadaf Shamaila, Hennecke Ann-Kristin, Klein Jonas, Mahmood Arsalan Mado, Rüttiger Christian, Gallei Markus, Fu Fangyu, Fouquet Eric, Ruiz Jaime, Astruc Didier, Walder Lorenz
Institute of Chemistry of New Materials, Center of Physics & Chemistry of New Materials, University of Osnabrück, Barbarastr. 7, 49069, Osnabrück, Germany.
Current address: Univ. Bordeaux, CNRS, Bordeaux INP, ISM, UMR 5255, 33607, Pessac, France.
Angew Chem Int Ed Engl. 2021 Jun 7;60(24):13554-13558. doi: 10.1002/anie.202100174. Epub 2021 May 6.
The first all-metallocene rechargeable battery consisting of poly-cobaltocenium/- and poly-ferrocene/reduced graphene oxide composites as anode and cathode was prepared. The intrinsically fast ET self-exchange rate of metallocenes was successfully combined with an efficient ion-percolation achieved by molecular self-assembly. The resulting battery materials show ideal Nernstian behavior, is thickness scalable up to >1.2 C cm , and exhibit high coulombic efficiency at ultrafast rates (200 A g ). Using aqueous LiClO , the charge is carried exclusively by the anion. The ClO intercalation is accompanied by a reciprocal height change of the active layers. Principally, volume changes in organic battery materials during charging/discharging are not desirable and represent a major safety issue. However, here, the individual height changes-due to ion breathing-are reciprocal and thus prohibiting any internal pressure build-up in the closed-cell, leading to excellent cycling stability.
制备了首个全金属茂可充电电池，其阳极和阴极分别由聚钴茂鎓/ - 和聚二茂铁/还原氧化石墨烯复合材料组成。金属茂固有的快速电子转移（ET）自交换速率成功地与分子自组装实现的高效离子渗透相结合。所得的电池材料表现出理想的能斯特行为，厚度可扩展至>1.2 C cm ，并在超快速率（200 A g ）下表现出高库仑效率。使用LiClO 水溶液时，电荷仅由阴离子携带。ClO 的嵌入伴随着活性层高度的相应变化。原则上，有机电池材料在充电/放电过程中的体积变化是不可取的，并且是一个主要的安全问题。然而，在此处，由于离子呼吸引起的各个高度变化是相互的，因此可防止闭孔内产生任何内部压力，从而实现出色的循环稳定性。
