Light vs Heat: Dissecting the De-intercalation in Photo-rechargeable Batteries

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY Nano Letters Pub Date : 2025-01-06 DOI:10.1021/acs.nanolett.4c04013

Amar Kumar, Shuvadip Pradhan, Siddharth Pandya, Raheel Hammad, Soumya Ghosh, Tharangattu N. Narayanan

{"title":"Light vs Heat: Dissecting the De-intercalation in Photo-rechargeable Batteries","authors":"Amar Kumar, Shuvadip Pradhan, Siddharth Pandya, Raheel Hammad, Soumya Ghosh, Tharangattu N. Narayanan","doi":"10.1021/acs.nanolett.4c04013","DOIUrl":null,"url":null,"abstract":"Does light or heat play a seminal role in photo-rechargeable batteries? This study unravels the effects of light in the exciton formation and separation processes in a photocathode, leading to the charging or de-intercalation of Li+ ions in a lithium-ion battery. Light induced oxidation of Ti3+ to Ti4+ in the Lix(TiS2–TiO2) heterostructure cathode is shown here, while heating does not elicit such changes. With the aid of photogenerated electrons at the cathode, the de-lithiated Li+ ions from Lix(TiS2–TiO2) get intercalated in the graphite anode during the photocharging process. Direct or passive heating leads to the degradation of the cathode electrolyte interface (CEI), instigating enhancement in open circuit potential. In contrast, photocharging leaves the organic electrolytes and CEI unaffected. Hence energy efficient photo-electrochemical energy systems can be built by carefully isolating the effects of heat and light in solar radiation, as dictated by this study.","PeriodicalId":53,"journal":{"name":"Nano Letters","volume":"82 1","pages":""},"PeriodicalIF":9.6000,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nano Letters","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1021/acs.nanolett.4c04013","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Does light or heat play a seminal role in photo-rechargeable batteries? This study unravels the effects of light in the exciton formation and separation processes in a photocathode, leading to the charging or de-intercalation of Li⁺ ions in a lithium-ion battery. Light induced oxidation of Ti³⁺ to Ti⁴⁺ in the Li_x(TiS₂–TiO₂) heterostructure cathode is shown here, while heating does not elicit such changes. With the aid of photogenerated electrons at the cathode, the de-lithiated Li⁺ ions from Li_x(TiS₂–TiO₂) get intercalated in the graphite anode during the photocharging process. Direct or passive heating leads to the degradation of the cathode electrolyte interface (CEI), instigating enhancement in open circuit potential. In contrast, photocharging leaves the organic electrolytes and CEI unaffected. Hence energy efficient photo-electrochemical energy systems can be built by carefully isolating the effects of heat and light in solar radiation, as dictated by this study.

Abstract Image

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

求助全文

约1分钟内获得全文去求助

来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.