@article{Li_Cheng_Luo_Zhou_Xu_Li_Li_Yuan_2017, title={High-Performance Flexible Asymmetric Supercapacitor Based on CoAl-LDH and rGO Electrodes}, volume={9}, url={https://nmlett.org/index.php/nml/article/view/341}, DOI={10.1007/s40820-017-0134-8}, abstractNote={<p>A flexible asymmetric supercapacitor (ASC) based on a CoAl-layered double hydroxide (CoAl-LDH) electrode and a reduced graphene oxide (rGO) electrode was successfully fabricated. The CoAl-LDH electrode as a positive electrode was synthesized by directly growing CoAl-LDH nanosheet arrays on a carbon cloth (CC) through a facile hydrothermal method, and it delivered a specific capacitance of 616.9&nbsp;F&nbsp;g<sup>−1</sup> at a current density of 1&nbsp;A&nbsp;g<sup>−1</sup>. The rGO electrode as a negative electrode was synthesized by coating rGO on the CC via a simple dip-coating method and revealed a specific capacitance of 110.0&nbsp;F&nbsp;g<sup>−1</sup> at a current density of 2&nbsp;A&nbsp;g<sup>−1</sup>. Ultimately, the advanced ASC offered a broad voltage window (1.7&nbsp;V) and exhibited a high superficial capacitance of 1.77&nbsp;F&nbsp;cm<sup>−2</sup> at 2&nbsp;mA&nbsp;cm<sup>−2</sup> and a high energy density of 0.71&nbsp;mWh&nbsp;cm<sup>−2</sup> at a power density of 17.05&nbsp;mW&nbsp;cm<sup>−2</sup>, along with an excellent cycle stability (92.9% capacitance retention over 8000 charge–discharge cycles).</p> <p>Highlights:</p> <p>1 CoAl-LDH (layer double hydroxide) electrode and binder-free rGO (reduced graphene oxide) electrode were successfully synthesized and assembled to produce a flexible ASC (asymmetric supercapacitor).<br>2 The assembled ASC device exhibited excellent capacitive performance.</p>}, number={3}, journal={Nano-Micro Letters}, author={Li, Shuoshuo and Cheng, Pengpeng and Luo, Jiaxian and Zhou, Dan and Xu, Weiming and Li, Jingwei and Li, Ruchun and Yuan, Dingsheng}, year={2017}, month={Feb.}, pages={31} }