文献类型：期刊文献

中文题名：一步法合成Bi_(5)O_(7)I用于极低温CO_(2)电还原

英文题名：One-step synthesized Bi_(5)O_(7)I for extremely low-temperature CO_(2) electroreduction

作者：刘梦洁[1];王裕超[1];俞婷婷[2];詹龙胜[1];赵鑫[1];练成[2];熊禹[3];熊翔[1];雷永鹏[1]

机构：[1]Cent South Univ, State Key Lab Powder Met, Changsha 410083, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[3]Cent South Univ, Sch Chem & Chem Engn, Changsha 410083, Peoples R China

年份：2023

卷号：68

期号：12

起止页码：1238

中文期刊名：Science Bulletin

外文期刊名：科学通报（英文版）

收录：CSTPCD;;EI(收录号：20232214164761);Scopus;WOS:【SCI-EXPANDED(收录号:WOS:001042867800001)】；CSCD:【CSCD2023_2024】；PubMed;

基金：Y. P. L. thanks the financial support from State Key Laboratory of Powder Metallurgy, Central South University. We are grateful for resources from the High Performance Computing Center of Central South University.

语种：中文

中文关键词：二氧化碳还原;非贵金属催化剂;大电流密度;大规模制备;极低温;甲酸盐;电解池;固体水;

摘要：电催化二氧化碳还原反应(CO_(2)RR)不仅可以推动实现碳达峰和碳中和,还可以实现火星的原位资源利用。考虑到火星地表温度在-50℃左右,同时富含大量的CO_(2)和固体水,有望在火星上利用CO_(2)RR制备含碳燃料,然而,用于CO,RR的非贵金属催化剂的大规模制备及极低温CO_(2)RR性能研究等问题亟待解决。本文采用了一种简单的一步超声合成法,实现了针尖状Bi_(5)O_(7)I的大规模制备,Bi_(5)O_(7)I催化剂在室温下表现了对甲酸盐的高选择性以及大电流密度将Bi_(5)O_(7)I作为阴极组装的电解池,可在-50℃下工作,甲酸盐的选择性大于90%.此外,由Bi_(5)O_(7)I组装的Zn-CO_(2)电池在-50℃下能稳定循环14h.该工作不仅为大批量合成Bi_(5)O_(7)I提供了一种简单且温和的方法,而且探究了CO_(2)RR在极低温环境下的适应性.
Electrocatalytic CO_(2) reduction reaction(CO_(2)RR)could not only facilitate carbon peaking and carbon neutrality,but also realize the in-situ utilization of Mars resources[1–3].As known,Mars is rich in CO_(2)(content of 96%in the atmosphere)and solid water,which are expected to be converted into carbonaceous fuels through the electrochemical CO_(2) reduction technology[4–6].In theory,the electrolysis of CO_(2) on Mars could solve the problem of long-distance resources transportation through in-situ conversion/utilization of extraterrestrial resources,presenting great potentials to support the human survival on Mars(Fig.1a)[7,8].However,the electrocatalytic CO_(2) conversion technology in extraterrestrial space needs to overcome two key challenges:effi-cient and scalable electrode catalysts[9]and extremely environmental adaptability of electrolysis reactions.Most of the synthetic routes involve high-temperature reactions and/or solvothermal reactions.Their disadvantages of low yield and large consumption of additives still exist.Keeping above in mind,it is anticipated to realize the scalable synthesis of non-noble-metal catalysts for CO_(2)RR.