Flexible/shape-versatile, bipolar all-solid-state lithium-ion batteries prepared by multistage printing,Energy & Environmental Science

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Flexible/shape-versatile, bipolar all-solid-state lithium-ion batteries prepared by multistage printing
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2017-10-09 00:00:00 , DOI: 10.1039/c7ee01630a
Se-Hee Kim _{1,

2,

3,

4,

5} , Keun-Ho Choi _{1,

2,

3,

4,

5} , Sung-Ju Cho _{1,

2,

3,

4,

5} , JongTae Yoo _{1,

2,

3,

4,

5} , Seong-Sun Lee _{1,

2,

3,

4,

5} , Sang-Young Lee _{1,

2,

3,

4,

5}

Affiliation

Bipolar all-solid-state lithium-ion batteries (LIBs) have attracted considerable attention as a promising approach to address the ever-increasing demand for high energy and safety. However, the use of (sulfide- or oxide-based) inorganic solid electrolytes, which have been the most extensively investigated electrolytes in LIBs, causes problems with respect to mechanical flexibility and form factors in addition to their longstanding issues such as chemical/electrochemical instability, interfacial contact resistance and manufacturing processability. Here, we develop a new class of flexible/shape-versatile bipolar all-solid-state LIBs via ultraviolet (UV) curing-assisted multistage printing, which does not require the high-pressure/high-temperature sintering processes adopted for typical inorganic electrolyte-based all-solid-state LIBs. Instead of inorganic electrolytes, a flexible/nonflammable gel electrolyte consisting of a sebaconitrile-based electrolyte and a semi-interpenetrating polymer network skeleton is used as a core element in the printed electrodes and gel composite electrolytes (GCEs, acting as an ion-conducting separator membrane). Rheology tuning (toward thixotropic fluid behavior) of the electrode and GCE pastes, in conjunction with solvent-drying-free multistage printing, enables the monolithic integration of in-series/in-plane bipolar-stacked cells onto complex-shaped objects. Because of the aforementioned material and process novelties, the printed bipolar LIBs show exceptional flexibility, form factors, charge/discharge behavior and abuse tolerance (nonflammability) that far exceed those achievable with inorganic-electrolyte-based conventional bipolar cell technologies.

中文翻译：

通过多阶段印刷制备的柔性/形状通用的双极性全固态锂离子电池

双极全固态锂离子电池（LIB）作为解决不断增长的对高能量和安全性需求的一种有前途的方法已经引起了广泛的关注。但是，使用（基于硫化物或氧化物的）无机固体电解质已成为LIB中研究最广泛的电解质，除了其长期存在的问题（如化学/电化学不稳定性）外，还引起了机械柔韧性和形状因数方面的问题。，界面接触电阻和制造加工性。在这里，我们通过紫外线（UV）固化辅助的多阶段印刷，不需要典型的基于无机电解质的全固态LIB所采用的高压/高温烧结工艺。由癸二腈基电解质和半互穿聚合物网络骨架组成的柔性/不易燃凝胶电解质代替无机电解质被用作印刷电极和凝胶复合电解质（GCE，充当离子导电隔膜）的核心元素膜）。电极和GCE糊剂的流变学调整（向触变性流动），结合无溶剂干燥的多阶段印刷技术，可将串联/面内双极堆叠的电池单片集成到复杂形状的物体上。由于上述材料和工艺的新颖性，

更新日期：2017-10-13

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