Precise Regulation of Intrachannel Negative Charge Density in Metal-Organic Frameworks for Efficient Alkali-Ion Transport.

Xiaoyan Shi, Tengfei Liu, Kaiyue Li, Yanyan Xu, Sijie Zhong, Junling Xu, Lianyi Shao, Zhipeng Sun

Abstract read

In one paragraph

Article in Angewandte Chemie (International ed. in English), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

8 authors.

Xiaoyan ShiSchool of Materials and Energy, Guangdong University of Technology, Guangzhou, Guangdong, China.ORCID https://orcid.org/0000-0002-7525-4270

Tengfei LiuSchool of Materials and Energy, Guangdong University of Technology, Guangzhou, Guangdong, China.

Kaiyue LiSchool of Materials and Energy, Guangdong University of Technology, Guangzhou, Guangdong, China.

Yanyan XuSchool of Materials and Energy, Guangdong University of Technology, Guangzhou, Guangdong, China.

Sijie ZhongSchool of Materials and Energy, Guangdong University of Technology, Guangzhou, Guangdong, China.

Junling XuSchool of Materials and Energy, Guangdong University of Technology, Guangzhou, Guangdong, China.ORCID https://orcid.org/0009-0005-8873-2381

Lianyi ShaoSchool of Materials and Energy, Guangdong University of Technology, Guangzhou, Guangdong, China.ORCID https://orcid.org/0000-0002-4683-0419

Zhipeng SunSchool of Materials and Energy, Guangdong University of Technology, Guangzhou, Guangdong, China.ORCID https://orcid.org/0000-0002-8202-6911

Funding

Guangdong Association Science and Technology SKXRC2025380Guangzhou Science and Technology Plan Project 2025A04J5092National Natural Science Foundation of China 22271066National Natural Science Foundation of China 22579035

6 · The paper itself

Abstract

Charged nanochannels are critical for efficient cation transport in metal-organic frameworks (MOFs); however, the relationship between intrachannel negative charge density and ionic conductivity remains poorly understood. Here, we report structurally analogous MOFs with nanochannels of precisely tunable negative charge density: neutral N-MOF, moderately charged M-MOF, and highly charged H-MOF. Our results show that intrachannel negative charge density regulates the electrostatic microenvironment and host-guest interactions, thereby controlling ion-pair dissociation, cation hopping, and the concentration of mobile charge carriers. Fixed negatively charged groups within the MOF nanochannels promote salt dissociation and provide hopping sites for ion migration. However, excessive charge density in H-MOF causes electrostatic anchoring that restricts Li

Indexed as

charge density regulationlithium‐ion transportmetal‐organic frameworkssodium‐ion transportsolid‐state ion conductor

Identifiers

PMID42287652

DOI10.1002/anie.7827578

PMCPMC13480537

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.