Nickel oxide, as a typical pseudocapacitive material, holds great promise for boosting the energy storage capability of supercapacitors (SCs) owing to its great advantages, such as high theoretical capacitance value, low‐cost, good stability, and environmentally benign nature. Nevertheless, many obstacles, including low intrinsic conductivity and limited surfice electrochemically active sites, need to be overcome before its practical implementation. In this review, the recent advances on nickel oxide‐based electrode materials are outlined with particular attention paid to strategies for enhancing their SC performance. To begin, an introduction to the physical and chemical properties of nickel oxide and its charge storage mechanisms is presented, followed by a discussion of the obstacles to its widespread implementation and the corresponding strategies for constructing high‐performance nickel oxide‐based electrode materials. After that, recent progress in the use of organic electrolyte systems to achieve improvements in integrated device performance is highlighted. To conclude, a detailed discussion on future trends and opportunities associated with NiO‐based electrode materials for future SCs is provided.

中文翻译：

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通过增强伪电容性氧化镍基材料接近高性能超级电容器

氧化镍作为一种典型的准电容材料，由于具有较高的理论电容值，低成本，良好的稳定性和对环境有益的性质等优点，因此有望提高超级电容器（SC）的储能能力。然而，在实际实施之前，需要克服许多障碍，包括低固有电导率和有限的表面电化学活性位。在这篇综述中，概述了基于氧化镍的电极材料的最新进展，并特别关注了增强其SC性能的策略。首先，介绍了氧化镍的物理和化学性质及其电荷存储机制，然后讨论了其广泛实施的障碍以及构建高性能氧化镍基电极材料的相应策略。此后，突出了在使用有机电解质系统以实现集成器件性能方面的改进方面的最新进展。最后，提供了有关未来SC的基于NiO的电极材料的未来趋势和机会的详细讨论。