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Cellulose-based Supercapacitors: Material and Performance Considerations

机译：基于纤维素的超级电容器：材料和性能方面的考虑

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摘要

One of the biggest challenges we will face over the next few decades is finding a way to power the future while maintaining strong socioeconomic growth and a clean environment. A transition from the use of fossil fuels to renewable energy sources is expected. Cellulose, the most abundant natural biopolymer on earth, is a unique, sustainable, functional material with exciting properties: it is low-cost and has hierarchical fibrous structures, a high surface area, thermal stability, hydrophilicity, biocompatibility, and mechanical flexibility, which makes it ideal for use in sustainable, flexible energy storage devices. This review focuses on energy storage applications involving different forms of cellulose (i.e., cellulose microfibers, nanocellulose fibers, and cellulose nanocrystals) in supercapacitors, with particular emphasis on new trends and performance considerations relevant to these fields. Recent advances and approaches to obtaining high capacity devices are evaluated and the limitations of cellulose-based systems are discussed. For the first time, a combination of device-specific factors such as electrode structures, mass loadings, areal capacities, and volumetric properties are taken into account, so as to evaluate and compare the energy storage performance and to better assess the merits of cellulose-based materials with respect to real applications.
机译：在未来几十年中，我们将面临的最大挑战之一是找到一种在维持强劲的社会经济增长和清洁环境的同时为未来提供动力的方法。有望从使用化石燃料过渡到可再生能源。纤维素是地球上最丰富的天然生物聚合物，是一种独特的，可持续的，功能性的材料，具有令人兴奋的特性：它是低成本的，具有分层的纤维结构，高表面积，热稳定性，亲水性，生物相容性和机械柔韧性，使其成为可持续，灵活的储能设备的理想选择。这篇综述着重于超级电容器中涉及不同形式的纤维素（即纤维素微纤维，纳米纤维素纤维和纤维素纳米晶体）的能量存储应用，特别着重于与这些领域相关的新趋势和性能考量。评价了获得高容量设备的最新进展和方法，并讨论了纤维素基系统的局限性。首次将特定于设备的因素（例如电极结构，质量负载，面积容量和体积特性）综合考虑在内，以便评估和比较储能性能，并更好地评估纤维素-有关实际应用的基础材料。

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