Current smart energy storage technology needs flexible, compact and even wearable devices with a wide potential window. As a requisite, a novel flexible all-solid-state asymmetric capacitor (ASC) based on worm-like nanostructured iron oxide (γ-Fe₂O₃) as negative electrode have been selected properly in combination with poly(3,4-ethylenedioxythiophene): polystyrene sulfonate (MWCNTs/PEDOT:PSS) coated multi-walled carbon nanotubes as a positive electrode to achieve wide potential window of 1.8 V and the use of facile, low cost and binder free approach for the synthesis are the novelties of the present report. These two electrodes have been sandwiched by CMC-Na₂SO₄ gel electrolyte. Chemical bath deposition method has been used to deposit γ-Fe₂O₃ thin film while ‘dip and dry’ coating technique to deposit MWCNTs/PEDOT:PSS composite thin film. Strikingly, the resulting γ-Fe₂O₃//MWCNTs/PEDOT:PSS asymmetric cell yields a wide voltage window of 1.8 V with a high specific capacitance of 65 F g⁻¹ at 2.4 A g⁻¹ current density with good specific energy and specific power. Furthermore, ASC device was capable of 80% retention at 5000 cycles through charge-discharge studies at current density of 2.5 A g⁻¹ along with the flexibility test by bending the device to 170° delivering only 15% capacity loss as per initial one.

当前的智能储能技术需要具有广阔潜力窗口的灵活，紧凑甚至可穿戴设备。为基于所需的，一种新的灵活的全固态非对称电容器（ASC）蠕虫状纳米结构的氧化铁（γ-的Fe ₂ ö ₃）作为负电极已被适当地选择结合的聚（3,4-亚乙基二氧）：聚苯乙烯磺酸盐（MWCNTs / PEDOT：PSS）涂覆的多壁碳纳米管作为正极，可实现1.8 V的宽电位窗口，并且使用简便，低成本和无粘结剂的合成方法是本发明的新颖之处报告。这两个电极已被CMC-Na ₂ SO ₄夹在中间凝胶电解质。化学浴沉积方法已被用来沉积了γ-Fe ₂ ö ₃薄膜，而“浸渍和干”涂层技术来沉积多壁碳纳米管/ PEDOT：PSS复合薄膜。引人注目的是，所得到的γ-的Fe ₂ ö ₃ //多壁碳纳米管/ PEDOT：PSS不对称细胞产生1.8 V的与65 F G高的比电容的宽电压窗口^-1在2.4克^-1具有良好的比能量的电流密度和特定的力量。此外，通过在2.5 A g ^-1的电流密度下进行充放电研究，ASC器件能够在5000次循环中保持80％的保持力，并通过将器件弯曲至170°进行挠性测试，从而使初始容量仅损失15％。