报告题目：Towards printed lignin-based batteries
报告时间：2023年12月7日（星期四）14:50—16:00
报告地点：造纸D楼306会议室
报 告 人：Reverant Crispin教授
主 持 人：彭新文 教授
欢迎广大师生踊跃参加。
制浆造纸工程国家重点实验室
轻工科学与工程学院
2023年12月5日
报告人简介：
Reverant Crispin obtained his PhD in 2000 with Prof. J.L. Brédas at University of Mons, Belgium, in quantum chemical modelling of the interaction of organic molecules on transition metal surfaces. In 2004, Reverant joined the Laboratory of Organic Electronics headed by Prof. M. Berggren and developed activities on organic electronic devices （organic diodes, transistors, memories）.For his development on thermoelectric polymers, he was awarded the Tage Erlander Prize （2012） and the Göran Gustafsson prize （2016） from the Royal Swedish Academy of Sciences.Since 2014, he is a Professor （Linköping University, Sweden） and leads research activities on organic energy materials. He became vice-director of the national program Advanced Functional Materials at Linköping University in 2019.He is cofounder and scientific advisor of 3 start-up companies: Ligna Energy AB （2017） developing organic batteries, ParsNord （2020） developing flexible thermoelectric coolers,and Cellfion AB （2021）producing ion-selective cellulose membranes for H2-electrolysers and redox flow batteries. He is also advisory board member for the following journals: “Advanced Energy and Sustainability Research” （2020） and Nano Research Energy （2021）.
Title: Towards printed lignin-based batteries
Abstract
The concept of zero-energy device for internet-of-things requires electronics, energy convertor and storage devices. To bring that concept to the internet-of-everything, the materials should also be low-cost, recyclable, safe and environmentally friendly. In addition, all the components （electrode and electrolyte） must be printable to ensure low-cost manufacturing. Organic synthetic and bio-polymers are attractive as battery electrodes due to their redox properties; but also as electrolytes due to their ability to transport ions. In this talk, we summarize our results focusing on three material concepts for organic batteries based on forest materials.
We first review our effort to reach low-cost lignin electrodes by either combining with conducting polymers or carbon based nanoconductors. The target was to consider very low-cost materials and to bring the electronic conductivity at the molecular scale towards the catechol units belonging to the lignin biopolymer since they are electrochemically actives and can participate to the charge storage. The next work introduces a new class of electrolyte working in the regime of “water-in-polymer salt electrolyte”. It combines non-flammability, wide electrochemical stability windows and enables aqueous organic batteries to get low self-discharge behaviour. We then focus on the transport of ions and the state of water within those polymer electrolytes. Finally, we increase the voltage and the energy density of the battery by considering zinc as a low-cost electrode. The challenge of making zinc-lignin batteries, which is the evolution of hydrogen gas and the dendrite formation are solved by developing further the “water-in-polymer salt electrolyte” to accommodate and transport zinc cations .