Abstract
Most advances towards flexible supercapacitors (SCs) have been focused on porous carbon materials. However, the poor flexibility and low areal capacitance impede their industrial application. While carbon cloth is generally regarded as improper electrode material due to its poor electrochemical performance, here, we demonstrate the capacitance of carbon cloth can be boosted to three orders of magnitude higher (2900mFcm-2) with a simple high-temperature annealing process. The improvement stems from ultramicropores effects in the range of 0.46–0.64nm besides superhydrophilicity and high specific surface area. Remarkably, direct implementation for flexible solid-state SCs (SSCs) provides areal capacitance and energy density for the stack of 920mFcm-2 and 128μWhcm-2, respectively. In addition, these devices are bendable, durable and easy to be any dimensions, hence, holding great promise for large-scale production of flexible electronics.
Published Version
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