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Multiphase, Multiscale Chemomechanics at Extreme Low Temperatures: Battery Electrodes for Operation in a Wide Temperature Range
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2021-08-21 , DOI: 10.1002/aenm.202102122 Jizhou Li 1 , Shaofeng Li 1, 2 , Yuxin Zhang 3 , Yang Yang 4, 5 , Silvia Russi 1 , Guannan Qian 1 , Linqin Mu 3 , Sang‐Jun Lee 1 , Zhijie Yang 3 , Jun‐Sik Lee 1 , Piero Pianetta 1 , Jieshan Qiu 2 , Daniel Ratner 6 , Peter Cloetens 4 , Kejie Zhao 7 , Feng Lin 3 , Yijin Liu 1
Advanced Energy Materials ( IF 24.4 ) Pub Date : 2021-08-21 , DOI: 10.1002/aenm.202102122 Jizhou Li 1 , Shaofeng Li 1, 2 , Yuxin Zhang 3 , Yang Yang 4, 5 , Silvia Russi 1 , Guannan Qian 1 , Linqin Mu 3 , Sang‐Jun Lee 1 , Zhijie Yang 3 , Jun‐Sik Lee 1 , Piero Pianetta 1 , Jieshan Qiu 2 , Daniel Ratner 6 , Peter Cloetens 4 , Kejie Zhao 7 , Feng Lin 3 , Yijin Liu 1
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Understanding the behavior of lithium-ion batteries (LIBs) under extreme conditions, for example, low temperature, is key to broad adoption of LIBs in various application scenarios. LIBs, poor performance at low temperatures is often attributed to the inferior lithium-ion transport in the electrolyte, which has motivated new electrolyte development as well as the battery preheating approach that is popular in electric vehicles. A significant irrevocable capacity loss, however, is not resolved by these measures nor well understood. Herein, multiphase, multiscale chemomechanical behaviors in composite LiNixMnyCozO2 (NMC, x + y + z = 1) cathodes at extremely low temperatures are systematically elucidated. The low-temperature storage of LIBs can result in irreversible structural damage in active electrodes, which can negatively impact the subsequent battery cycling performance at ambient temperature. Beside developing electrolytes that have stable performance, designing batteries for use in a wide temperature range also calls for the development of electrode components that are structurally and morphologically robust when the cell is switched between different temperatures.
中文翻译：
极端低温下的多相、多尺度化学力学：在宽温度范围内运行的电池电极
了解锂离子电池 (LIB) 在极端条件下（例如低温）的行为是在各种应用场景中广泛采用 LIB 的关键。LIB 在低温下性能不佳通常归因于电解液中锂离子传输较差，这推动了新电解液的开发以及电动汽车中流行的电池预热方法。然而，重大的不可撤销的容量损失并没有通过这些措施解决，也没有得到很好的理解。在此，复合材料 LiNi x Mn y Co z O 2 (NMC, x + y + z = 1) 系统地阐明了极低温度下的阴极。LIBs的低温储存会导致活性电极不可逆的结构损坏，这会对随后的电池在环境温度下的循环性能产生负面影响。除了开发性能稳定的电解质之外，设计在宽温度范围内使用的电池还需要开发在电池在不同温度之间切换时结构和形态上坚固的电极组件。
更新日期：2021-10-06
中文翻译：
极端低温下的多相、多尺度化学力学：在宽温度范围内运行的电池电极
了解锂离子电池 (LIB) 在极端条件下（例如低温）的行为是在各种应用场景中广泛采用 LIB 的关键。LIB 在低温下性能不佳通常归因于电解液中锂离子传输较差，这推动了新电解液的开发以及电动汽车中流行的电池预热方法。然而，重大的不可撤销的容量损失并没有通过这些措施解决，也没有得到很好的理解。在此，复合材料 LiNi x Mn y Co z O 2 (NMC, x + y + z = 1) 系统地阐明了极低温度下的阴极。LIBs的低温储存会导致活性电极不可逆的结构损坏，这会对随后的电池在环境温度下的循环性能产生负面影响。除了开发性能稳定的电解质之外，设计在宽温度范围内使用的电池还需要开发在电池在不同温度之间切换时结构和形态上坚固的电极组件。
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